Santorini, GREECE and its best beaches
Climate - Temperatures and rainfall - Mediterranean Sea
Santorini: Temperatures during the day, at night, rain and bathing conditions
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January Day temperature  56°F / 13°C |
Night temp.  45°F / 07°C |
Bathing temperature  58°F / 14°C |
Rain  042 mm |
Non-ideal conditions
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February Day temperature 58°F / 14°C |
Night temp. 45°F / 07°C |
Bathing temperature 59°F / 15°C |
Rain 045 mm |
Non-ideal conditions
|
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March Day temperature 61°F / 16°C |
Night temp. 47°F / 08°C |
Bathing temperature 59°F / 15°C |
Rain 043 mm |
Non-ideal conditions
|
|
April Day temperature 67°F / 19°C |
Night temp. 54°F / 12°C |
Bathing temperature 61°F / 16°C |
Rain 024 mm |
Non-ideal conditions
|
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May Day temperature 77°F / 25°C |
Night temp. 61°F / 16°C |
Bathing temperature 63°F / 17°C |
Rain 014 mm |
Non-ideal conditions
|
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June Day temperature 85°F / 29°C |
Night temp. 68°F / 20°C |
Bathing temperature 70°F / 21°C |
Rain 005 mm |
Conditions 
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|
July Day temperature 88°F / 31°C |
Night temp. 74°F / 23°C |
Bathing temperature 77°F / 25°C |
Rain 004 mm |
Conditions
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August Day temperature 88°F / 31°C |
Night temp. 72°F / 22°C |
Bathing temperature 79°F / 26°C |
Rain 007 mm |
Conditions  
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September Day temperature 83°F / 28°C |
Night temp. 67°F / 19°C |
Bathing temperature 76°F / 24°C |
Rain 009 mm |
Conditions
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October Day temperature 76°F / 24°C |
Night temp. 59°F / 15°C |
Bathing temperature 68°F / 20°C |
Rain 044 mm |
Non-ideal conditions
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November Day temperature 67°F / 19°C |
Night temp. 54°F / 12°C |
Bathing temperature 65°F / 18°C |
Rain 050 mm |
Non-ideal conditions
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December Day temperature 59°F / 15°C |
Night temp. 49°F / 09°C |
Bathing temperature 61°F / 16°C |
Rain 063 mm |
Non-ideal conditions
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Greece : climate and when to go to Santorini
Temperate climate, mild, wet winters, hot and dry summers. The climate in Greece is typical of the Mediterranean climate: mild and rainy winter, relatively warm and dry summer, and generally prolonged periods of sunshine for most of the year. A wide variety of climate sub-types, also in the Mediterranean climate approach, is present in several regions of Greece. This is due to the influence of topography (large mountain chains, along the central part), and to the air masses coming from the moisture sources of the central Mediterranean Sea.
| January Avoid |
February Avoid |
March Avoid |
April Avoid |
May Avoid |
June Pecfect |
July Pecfect |
August Pecfect |
September Pecfect |
October Avoid |
November Avoid |
December Avoid |
When to go? The hottest month for the beach, lazing around and swimming is August. Check the precipitations because showers are possible but the sun returns quickly, otherwise other periods are possible. The coolest month is January, if you can not stand the heat too much. The driest month of the year is July, if you do not like the rain at all.
Click on
Athens -
Santorini to display its climate.
Graphs and temperature curves with average precipitation over the year
Precipitation, rainfall, cyclone: GREECE
Temperatures of bathing water around Santorini
Landmarks
Perfect conditions to enjoy the beach.
Favorable conditions for enjoying the beach.
Cloudy with sunny spells and thunderstorms.
Very strong tropical or monsoon rains.
Months at risk of cyclones with alerts level 1 to 5. Nice swimming at more than 26°C / 79°F. Everything is perfect for traveling.No cyclone risk for this country
Mediterranean Sea
Climate May 2025
Santorini sunshine in summer and winter
The sun at its zenith, that means well perpendicular to the surface of the Earth, sending 100% of radiation and heat. Santorini receives in winter (january), 50% of sun power and 97% during summer time (july).
The average temperature and sunshine deviations between summer and winter are 47%. This large gap means that the temperature at sea varies and that it can be cooler during the winter. A sweater can be nice in the early morning or evening, the fell night in cooler season.
Average temperatures and rainfall for a stay in May
On the left, the averages observed every month of May on the Greece beaches. The trends for next month are, slightly warmer daytime temperatures, a bathing water in Mediterranean Sea which takes a few degrees, less rainfall with warmer nights.
Sunset and sunrise times for GREECE
Local time : May 2025, Friday 09, 07:31 AM
Sunrise time : 05:19 am, point A
Sunset time : 7:10 pm, point B
Duration of daylight : 13:51 / 24:00
Jet lag : GMT+2
The average monthly UV index of GREECE
What is the period of mosquitoes virulence over the year?
Weather forecast for Santorini
Here are the current 5-day forecasts for Messaria / Santorini. Temperatures are spaced 3 hours apart for each day. The summary of the state of the sky gives the trend of the week. The sea temperature at is a monthly average. In lagoons or seashores where the bathing water is shallow, you can add some degrees.
Saturday
May 10, 2025
8 am
64.8°F
19°C
Overcast clouds
Humidity 89%
Sea 63°F/17°C
Saturday
May 10, 2025
11 am
64.1°F
18°C
Scattered clouds
Humidity 90%
Sea 63°F/17°C
Saturday
May 10, 2025
2 pm
63.9°F
18°C
Few clouds
Humidity 91%
Sea 63°F/17°C
Saturday
May 10, 2025
5 pm
64°F
18°C
Clear sky
Humidity 87%
Sea 63°F/17°C
Saturday
May 10, 2025
8 pm
63.7°F
18°C
Scattered clouds
Humidity 85%
Sea 63°F/17°C
Saturday
May 10, 2025
11 pm
63.1°F
18°C
Broken clouds
Humidity 83%
Sea 63°F/17°C
Sunday
May 11, 2025
8 am
61.7°F
17°C
Few clouds
Humidity 81%
Sea 63°F/17°C
Sunday
May 11, 2025
11 am
62.5°F
17°C
Overcast clouds
Humidity 76%
Sea 63°F/17°C
Sunday
May 11, 2025
2 pm
63.5°F
18°C
Broken clouds
Humidity 75%
Sea 63°F/17°C
Sunday
May 11, 2025
5 pm
63.8°F
18°C
Broken clouds
Humidity 73%
Sea 63°F/17°C
Sunday
May 11, 2025
8 pm
63.5°F
18°C
Broken clouds
Humidity 74%
Sea 63°F/17°C
Sunday
May 11, 2025
11 pm
63.9°F
18°C
Overcast clouds
Humidity 73%
Sea 63°F/17°C
Monday
May 12, 2025
8 am
64°F
18°C
Overcast clouds
Humidity 75%
Sea 63°F/17°C
Monday
May 12, 2025
11 am
64.5°F
19°C
Overcast clouds
Humidity 71%
Sea 63°F/17°C
Monday
May 12, 2025
2 pm
65.2°F
19°C
Overcast clouds
Humidity 69%
Sea 63°F/17°C
Monday
May 12, 2025
5 pm
65.5°F
19°C
Scattered clouds
Humidity 68%
Sea 63°F/17°C
Monday
May 12, 2025
8 pm
64.3°F
18°C
Broken clouds
Humidity 75%
Sea 63°F/17°C
Monday
May 12, 2025
11 pm
62.6°F
17°C
Overcast clouds
Humidity 80%
Sea 63°F/17°C
Tuesday
May 13, 2025
8 am
63.1°F
18°C
Broken clouds
Humidity 78%
Sea 63°F/17°C
Tuesday
May 13, 2025
11 am
62.2°F
17°C
Clear sky
Humidity 76%
Sea 63°F/17°C
Tuesday
May 13, 2025
2 pm
62.9°F
18°C
Clear sky
Humidity 70%
Sea 63°F/17°C
Tuesday
May 13, 2025
5 pm
63.2°F
18°C
Clear sky
Humidity 69%
Sea 63°F/17°C
Tuesday
May 13, 2025
8 pm
62.4°F
17°C
Clear sky
Humidity 71%
Sea 63°F/17°C
Tuesday
May 13, 2025
11 pm
63.3°F
18°C
Clear sky
Humidity 70%
Sea 63°F/17°C
Weather uncertainties 2025 to go to Santorini ?
When traveling in the tropics as a seaside, rain is not welcome. If you see this indicator, with possible storms, that does not mean that it will rain all day long. When we observe the local rainfall, it is either really zero or very weak. Meteorologists prefer to be pessimistic. So observe below, the skies photographed during a week announced stormy in Asia. It did not rain once. I invite you to integrate this parameter before going to Santorini for a good trip to the sun!
