May weather forecast
Santorini, Greece

The white houses on the Island of lovers overlooking clear blue waters, Santorini, Greece
The white houses on the Island of lovers overlooking clear blue waters, Santorini, Greece

Weather in May

The last month of the spring, May, is an agreeable month in Santorini, Greece, with an average temperature ranging between max 22°C (71.6°F) and min 15°C (59°F).

Temperature

In Santorini, the average high-temperature in May marginally rises from an enjoyable 19°C (66.2°F) in April to an agreeable 22°C (71.6°F). In May, the average low-temperature is 15°C (59°F).

Rainfall

In Santorini, during 3 rainfall days, 14mm (0.55") of precipitation is typically accumulated. In Santorini, during the entire year, the rain falls for 65 days and collects up to 554mm (21.81") of precipitation.

Sea temperature

In May, the average sea temperature is 19.2°C (66.6°F).
Note: Swimming in 19.2°C (66.6°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

The average length of the day in May is 14h and 7min.
On the first day of the month, sunrise is at 06:24 and sunset at 20:05. On the last day of May, sunrise is at 06:01 and sunset at 20:29 EEST.

Sunshine

The average sunshine in May is 10h.

UV index

The average daily maximum UV index in May is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 8 in May interpret into the following advice:
Take special precautions, as unprotected skin can be damaged and can burn quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

How much does it rain in Santorini in May?

In May, in Santorini, Greece, the rain falls for 3 days. Throughout May, 14mm (0.55") of precipitation is accumulated.

What is the sea temperature in May in Santorini?

In Santorini, Greece, in May, the average water temperature is 19.2°C (66.6°F). For swimming, a surface water temperature of 19.2°C (66.6°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Santorini have in May?

In Santorini, the average day length in May is 14h and 7min.

When are sunrise and sunset in May in Santorini?

In May, on the first day of the month, sunrise is at 06:24 and sunset at 20:05. On the last day of the month, in Santorini, sunrise is at 06:01 and sunset at 20:29 EEST.

How long on average sun shines in May in Santorini?

In Santorini, Greece, the average sunshine duration in May is 10h.

What is the UV index intensity in May in Santorini?

In Santorini, the average daily maximum UV index in May is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in May
Santorini, Greece

Average temperature in May - Santorini, Greece
  • Average high temperature in May: 22°C

The warmest month (with the highest average high temperature) is July (28°C).
The months with the lowest average high temperature are January and February (14°C).

  • Average low temperature in May: 15°C

The months with the highest average low temperature are July and August (22°C).
The coldest months (with the lowest average low temperature) are January and February (9°C).

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Average rainfall in May
Santorini, Greece

Average rainfall in May - Santorini, Greece
  • Average rainfall in May: 14mm

The wettest month (with the highest rainfall) is January (114mm).
The driest months (with the least rainfall) are July and August (1mm).

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Average rainfall days in May
Santorini, Greece

Average rainfall days in May - Santorini, Greece
  • Average rainfall days in May: 3 days

The month with the highest number of rainy days is December (12 days).
The months with the least rainy days are June, July, August and September (1 days).

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Average sea temperature in May
Santorini, Greece

Average sea temperature in May - Santorini, Greece
  • Average sea temperature in May: 19.2°C

The best month for swimming (with the highest average sea temperature) is August (25.7°C).
The coldest month (with the lowest average sea temperature) is February (16.5°C).

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Average daylight in May /
Average sunshine in May
Santorini, Greece

Average daylight in May / Average sunshine in May - Santorini, Greece
  • Average daylight in May: 14h and 7min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 44min).

  • Average sunshine in May: 10h

The months with the most sunshine are June and July (Average sunshine: 13h).
The months with the least sunshine are January and December (Average sunshine: 4).

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Average UV index in May
Santorini, Greece

Average UV index in May - Santorini, Greece
  • Average UV index in May: 8

The months with the highest UV index are June and July (UV index 10).
The months with the lowest UV index are January and December (UV index 2).

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