Santorini Weather Guide

Have a look at what is the weather in Santorini every month of the year and schedule your vacation  with no suprises.

santorini temperature

by: Chris Georgantzos, experienced travel agent, he has accommodated for the for the needs of 8000 travelers over an 8-year period. If you need any help with your vacation in santorini send us an e-mail at This email address is being protected from spambots. You need JavaScript enabled to view it.

Following there is an analysis of what to expect in Santorini every month of the year. All months are included.

July is the hottest month in Santorini with an average temperature of 26°C (79°F) and the coldest is January at 12°C (54°F) with the most daily sunshine hours at 14 in July. The wettest month is December with an average of 74.5mm of rain. The best month to swim in the sea is in August when the average sea temperature is 25°C (77°F).

Santorini weather in May
The average temperature in May is 63 to 73 Fahrenheit. It rains only 3 days per month, you should expect to be able to enjoy the sunset for at least 20 days of May. The weather is mostly dry, humidity ranges from 50 to 85%. Maximum wind is 12 miles per hour and the dominant wind is north 60% of the time. May is one of the months of the year that have the less wind. The water temperature is 65 Fahrenheit on average. You should expect only 6 cloudy days in May.
More analytically it could be said that the temperature in May can be as low as 63 Fahrenheit (13 Celsius) and as high as 73 Fahrenheit (23 Celsius). The average mm of rains that you should expect in Santorini in May is 3mm and you could roughly expect that on average you will have 3 rainy days in the whole of May. May is one of the 4 months in the whole year that gets the lowest rain in mm and in rainy days. You should also expect to get 12 hours of sunshine in a day in May. As far as concerns cloudy days , each day you stand a chance of 22% to have an overcast day or mostly cloudy conditions (80% or more cloud cover), that could work out on 6 cloudy days in May (3 of them with rain).The remaining 20 days have less that 40% cloud cover daily, also there are 4 days that will have 60% cloud cover. Summarizing the cloud cover in May you should be able to experience the sunset in a satisfactory way as far as concern the clouds more that 20 days per month. The average humidity levels in May are about 50% and can get no more than 85%. The average wind speed is 6 miles per hour and can get as high as 12 miles per hour and as low as 2 miles per hour. The dominant wind is North at about 60% of the time, 10% of the time south, 5% of the time east and the remaining 25% of the time south. The water temperature start in 1 May with 63 Fahrenheit and by 31 May it has climbed up to 68 Fahrenheit.

Santorini weather in June
The average temperature in Jun is 70 to 81 Fahrenheit. It rains only 1 day per month, you should expect to be able to enjoy the sunset for at least 29 days of Jun. The weather is mostly dry; humidity ranges from 44% to 83%. Maximum wind is 12 miles per hour and the dominant wind is north 43% of the time. The water temperature is 71 Fahrenheit on average. You should expect only 1 cloudy day in June.
More analytically it could be said that the temperature in Jun can be as low as 70 Fahrenheit (21 Celsius) and as high as 81 Fahrenheit (27 Celsius). The average mm of rains that you should expect in Santorini in May is 3mm and you could roughly expect that on average you will have 1 rainy day in the whole of June. June is one of the 4 months in the whole year that gets the lowest rain in mm and in rainy days. You should also expect to get 13 hours of sunshine in a day in June. As far as concerns cloudy days, each day you stand a chance of 10% to have an overcast day or mostly cloudy conditions (80% or more cloud cover), that could work out on 3 cloudy days in Jun (1 of them with rain).The remaining 27 days have less that 40% cloud cover daily and more than half of them the sky will be almost cloudless. Summarizing the cloud cover in June you should be able to experience the sunset in a satisfactory way as far as concern the clouds more that 27 days per month. The average humidity levels in June are about 44% and can get no more than 83%. The average wind speed is 6 miles per hour and can get as high as 12 miles per hour and as low as 2 miles per hour. The dominant wind is North at about 43% of the time, 33% of the time west, 11% of the time east and the remaining 15% of the time south. The water temperature starts in 1 June with 69 Fahrenheit and by 30 Jun it has climbed up to 73 Fahrenheit.

Santorini weather in July
The average temperatures in July are 73 to 84 Fahrenheit. It does not rain in July, you should expect to be able to enjoy the sunset for at least 30 days of July. The weather is mostly dry; humidity ranges from 44% to 78%. You stand a 55% probability to experience wind more than 4 Beaufort. Maximum wind is 16 miles per hour and the dominant wind is north 50% of the time. The water temperature is 74 Fahrenheit on average. You should expect no cloudy days in July.
More analytically it could be said that the average temperature in July can be as low as 73 Fahrenheit (21 Celsius) and as high as 84 Fahrenheit (29 Celsius).You should expect not to rain at all in July. You should also expect to get 14 hours of sunshine in a day in July. You should expect no cloudy days in July. Summarizing there is no cloud cover in July and you should be able to experience the sunset in a satisfactory way as far as concern the clouds, every day. The average humidity levels in June are about 44% and can get no more than 83%. You stand a 55% probability to experience wind more than 4 Beaufort. Maximum wind is 16 miles per hour and the dominant wind is north 50% of the time, 34% of the time west, 8% of the time east and the remaining 8% of the time south. The water temperature starts in 1 July with 73 Fahrenheit and by 31 July it has climbed up to 75 Fahrenheit.

Santorini weather in August
The average temperatures in August are 73 to 84 Fahrenheit. It does not rain in August, you should expect to be able to enjoy the sunset for at least 31 days of August. The weather is mostly dry; humidity ranges from 48% to 79%. You stand a 64% probability to experience wind more than 4 Beaufort. Maximum wind is 14 miles per hour and the dominant wind is north 65% of the time. The water temperature is 76 Fahrenheit on average. You should expect no cloudy days in August.
More analytically it could be said that the average temperature in August can be as low as 73 Fahrenheit (21 Celsius) and as high as 84 Fahrenheit (29 Celsius).You should expect not to rain at all in August. You should also expect to get 13 hours of sunshine in a day in August. You should expect no cloudy days in August. Summarizing there is no cloud cover in August (less than 3% cloudcover) and you should be able to experience the sunset in a satisfactory way as far as concern the clouds, every day. The average humidity levels in June are about 48% and can get no more than 79%. You stand a 65% probability to experience wind more than 4 Beaufort. Maximum wind is 16 miles per hour and the dominant wind is north 65% of the time, 31% of the time west, 2% of the time east and the remaining 2% of the time south. The water temperature starts in 1 July with 74 Fahrenheit and by 31 July it has climbed up to 76 Fahrenheit.

Santorini weather in September
The average temperature in September is 69 to 80 Fahrenheit. It rains only 3 days per month, you should expect to be able to enjoy the sunset for at least 23 days of September. The weather is mostly dry, humidity ranges from 50 to 85%. Maximum wind is 14 miles per hour and the dominant wind is north 60% of the time. You have a 53% probability to experience wind more than 4 beaufort. The water temperature is 74 Fahrenheit on average. You should expect only 5 cloudy days (mostly cloudy or overcast) in September.
More analytically it could be said that the temperature in September can be as low as 69 Fahrenheit (21 Celsius) and as high as 79 Fahrenheit (26 Celsius).You could roughly expect that on average you will have 2 rainy days in the whole of September. You should also expect to get 11 hours of sunshine in a day in September. As far as concerns cloudy days , each day you stand a chance of 8-18% to have an overcast day or mostly cloudy conditions (80% or more cloud cover), that could work out on 5 cloudy days in September (3 of them with rain).The remaining 26 days have less that 60% cloud cover daily, 4 out of 5 days in September will be less that 45% cloudy. Summarizing the cloud cover in September you should be able to experience the sunset in a satisfactory way as far as concern the clouds more that roughly 24 days per month (this assumption is based on the time that cloud cover is 40% or less). The average humidity levels in September are about 50% and can get no more than 85%. The average wind speed is 6 miles per hour. The dominant wind is North at about 60% of the time, 34% of the time west, 2% of the time east and the remaining 4% of the time south. The water temperature starts in 1 September with 75 Fahrenheit and by 31 September it has decreased to 73 Fahrenheit.

Santorini weather in October
The average temperature in October is 64 to 73 Fahrenheit. It rains only 4 days per month, you should expect to be able to enjoy the sunset for at least 20 days of October. The weather is mostly dry, humidity ranges from 57 to 85%. Average wind is 12 miles per hour and the dominant wind is north 60% of the time. You have a 52% probability to experience wind more than 4 Beauport. The water temperature is 73 Fahrenheit on average. You should expect 10 cloudy days (mostly cloudy or overcast) in October.
More analytically it could be said that the temperature in October can be as low as 64 Fahrenheit (18 Celsius) and as high as 73 Fahrenheit (23 Celsius).You could roughly expect that on average you will have 4 rainy days in the whole of October. You should also expect to get 9 hours of sunshine in a day in October. As far as concerns cloudy days , each day you stand a chance of 33% to have an overcast day or mostly cloudy conditions (80% or more cloud cover), that could work out on 10 cloudy days in October (4 of them with rain).The remaining 20 days have less that 60% cloud cover daily. Summarizing the cloud cover in October you should be able to experience the sunset in a satisfactory way as far as concern the roughly 20 days per month (this assumption is based on the time that cloud cover is 40% or less). The average humidity levels in October are about 57% and can get no more than 85%. The average wind speed is 6 miles per hour. The dominant wind is North at about 60% of the time, 20% of the time west, 5% of the time east and the remaining 15% of the time south.

Santorini weather in November
The average temperature in November is 57 to 66 Fahrenheit. It rains 14 days per month, you should expect to be able to enjoy the sunset for at least 16 days of November. The weather is mostly dry, humidity ranges from 60 to 86%. Average wind is 11 miles per hour and the dominant wind is north 57% of the time. You have a 45% probability to experience wind more than 4 Beaufort. The water temperature is 67 Fahrenheit on average. You should expect 14 cloudy days (mostly cloudy or overcast) in November.
More analytically it could be said that the temperature in November can be as low as 57 Fahrenheit (14 Celsius) and as high as 66 Fahrenheit (19 Celsius).You could roughly expect that on average you will have 14 rainy days in the whole of November. You should also expect to get 8 hours of sunshine in a day in November. As far as concerns cloudy days , each day you stand a chance of 33% to have an overcast day or mostly cloudy conditions (80% or more cloud cover), that could work out on 14 cloudy days in November (14 of them with rain at least at some parts of the day).The remaining 16 days have less that 60% cloud cover daily. Summarizing the cloud cover in November you should be able to experience the sunset in a satisfactory way roughly 16 days per month (this assumption is based on the time that cloud cover is 40% or less). The average humidity levels in November are about 60% and can get no more than 86%. The average wind speed is 11 miles per hour. The dominant wind is North at about 57% of the time, 17% of the time west, 17% of the time south and the remaining 9% of the time east.

Santorini weather in December
The average temperature in December is 52 to 59 Fahrenheit. It rains 11 days per month, you should expect to be able to enjoy the sunset for at least 12 days of December. The weather is mostly dry, humidity ranges from 59 to 85%. Average wind is 13 miles per hour and the dominant wind is north 57% of the time. You have a 55% probability to experience wind more than 4 Beaufort. The water temperature is 63 Fahrenheit on average. You should expect 11 cloudy days (mostly cloudy or overcast) in December.
More analytically it could be said that the temperature in December can be as low as 52 Fahrenheit (11 Celsius) and as high as 59 Fahrenheit (15 Celsius).You could roughly expect that on average you will have 11 rainy days in the whole of December. You should also expect to get 6 hours of sunshine in a day in December. As far as concerns cloudy days , each day you stand a chance of 33% to have an overcast day or mostly cloudy conditions (80% or more cloud cover), that could work out on 11 cloudy days in December (11 of them with rain at least at some parts of the day).A remaining 14 days have less that 40% cloud cover daily and the rest 5 days will have 60% cloud cover. Summarizing the cloud cover in December you should be able to experience the sunset in a satisfactory way roughly 14 days per month (this assumption is based on the time that cloud cover is 40% or less). The average humidity levels in December are about 59% and can get no more than 85%. The average wind speed is 9 miles per hour. The dominant wind is North at about 57% of the time, 18% of the time west, 18% of the time south and the remaining 7% of the time east.

Santorini weather in January
The average temperature in January is 50 to 57 Fahrenheit. It rains 18 days per month, you should expect to be able to enjoy the sunset for at least 15 days of January. The weather is mostly dry, humidity ranges from 59 to 83%. Average wind is 8 miles per hour and the dominant wind is north 44% of the time. You have a 60% probability to experience wind more than 4 Beaufort. The water temperature is 61 Fahrenheit on average. You should expect 12 cloudy days (mostly cloudy or overcast) in January.
More analytically it could be said that the temperature in January can be as low as 50 Fahrenheit (10 Celsius) and as high as 57 Fahrenheit (14 Celsius).You could roughly expect that on average you will have 18 rainy days in the whole of January. You should also expect to get 7 hours of sunshine in a day in January. As far as concerns cloudy days , each day you stand a chance of 33% to have an overcast day or mostly cloudy conditions (80% or more cloud cover), that could work out on 11 cloudy days in January (but 18 rainy days with rain at least at some parts of the day). Summarizing the cloud cover in January you should be able to experience the sunset in a satisfactory way roughly 15 days per month (this assumption is based on the fact that cloud cover is 40% or less , 52% of the time). The average humidity levels in January are about 59% and can get no more than 83%. The average wind speed is 8 miles per hour. The dominant wind is North at about 43% of the time, 23% of the time west, 20% of the time south and the remaining 14% of the time east.

Santorini weather in February
The average temperature in February is 50 to 57 Fahrenheit. It rains 9 days per month, you should expect to be able to enjoy the sunset for at least 10 days of February. The weather is mostly dry, humidity levels are characterized comfortable at this month.. Average wind is 8 miles per hour and the dominant wind is north 44% of the time. You have a 60% probability to experience wind more than 4 Beaufort. The water temperature is 61 Fahrenheit on average. You should expect 12 cloudy days (mostly cloudy or overcast) in February.
More analytically it could be said that the temperature in February can be as low as 50 Fahrenheit (10 Celsius) and as high as 57 Fahrenheit (14 Celsius).You could roughly expect that on average you will have 9 rainy days in the whole of February. You should also expect to get 7 hours of sunshine in a day in February. As far as concerns cloudy days , each day you stand a chance of 33% to have an overcast day or mostly cloudy conditions (80% or more cloud cover), that could work out on 11 cloudy days in February (but 9 rainy days with rain at least at some parts of the day). Summarizing the cloud cover in February you should be able to experience the sunset in a satisfactory way roughly 15 days per month (this assumption is based on the fact that cloud cover is 40% or less , 52% of the time). The average humidity levels in February are about 59% and can get no more than 83%. The average wind speed is 8 miles per hour. The dominant wind is North at about 60% of the time, 20% of the time west, 20% of the time south and the remaining 14% of the time east.

Santorini weather in March
The average temperature in March is 52 to 64 Fahrenheit. It rains 12 days per month, you should expect to be able to enjoy the sunset for at least 18 days of March. The weather is mostly dry, humidity levels are characterized comfortable at this month.. Average wind is 8 miles per hour and the dominant wind is north 35% of the time. You have a 60% probability to experience wind more than 4 Beaufort. The water temperature is 61 Fahrenheit on average. You should expect 12 cloudy days (mostly cloudy or overcast) in March.
More analytically it could be said that the temperature in March can be as low as 52 Fahrenheit (11 Celsius) and as high as 64 Fahrenheit (16 Celsius).You could roughly expect that on average you will have 12 rainy days in the whole of March. You should also expect to get 9 hours of sunshine in a day in February. As far as concerns cloudy days , each day you stand a chance of 33% to have an overcast day or mostly cloudy conditions (80% or more cloud cover), that could work out on 11 cloudy days in March (but 9 rainy days with rain at least at some parts of the day). The average wind speed is 8 miles per hour. The dominant wind is North at about 35% of the time, 25% of the time west, 25% of the time south and the remaining 15% of the time east.

Santorini weather in April
The average temperature in April is 55 to 64 Fahrenheit. It rains 4 days per month, you should expect to be able to enjoy the sunset for at least 23 days of April. The weather is mostly dry, humidity levels are characterized 80% dry and 20% confortable at this month. Average wind is 9 miles per hour and the dominant wind is north 30% of the time. You have a 60% probability to experience wind more than 4 Beaufort. The water temperature is 63 Fahrenheit on average. You should expect 7 cloudy days (mostly cloudy or overcast) in April. More analytically it could be said that the average temperature in April can be as low as 55 Fahrenheit (13 Celsius) and as high as 64 Fahrenheit (18 Celsius).You could roughly expect that on average you will have 4 rainy days in the whole of April. You should also expect to get 11 hours of sunshine in a day in April. The average wind speed is 8 miles per hour. The dominant wind is North at about 30% of the time, 25% of the time west, 25% of the time south and the remaining 20% of the time east.

Sources:
www.holiday-weather.com/santorini/averages
https://weatherspark.com
http://www.holiday-weather.com
https://www.windfinder.com