May weather forecast
Rethimno, Greece

Dusk in the Venetian Rethimno harbor in Greece
Dusk in the Venetian Rethimno harbor in Greece

Weather in May

The last month of the spring, May, is a warm month in Rethimno, Greece, with an average temperature ranging between min 15°C (59°F) and max 24°C (75.2°F).

Temperature

In May, the average high-temperature slightly increases from an agreeable 20°C (68°F) in April to a moderately hot 24°C (75.2°F). In May, in Rethimno, the average low-temperature is 15°C (59°F).

Rainfall

In May, the rain falls for 3 days. Throughout May, 14mm (0.55") of precipitation is accumulated. Throughout the year, in Rethimno, there are 67 rainfall days, and 664mm (26.14") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature is 19.3°C (66.7°F).
Note: For swimming, a surface water temperature of 19.3°C (66.7°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).

Daylight

The average length of the day in May in Rethimno is 14h and 2min.
On the first day of the month, sunrise is at 06:30 and sunset at 20:07. On the last day of May, in Rethimno, sunrise is at 06:08 and sunset at 20:30 EEST.

Sunshine

In May, the average sunshine is 10h.

UV index

In Rethimno, the average daily maximum UV index in May is 9. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 9 in May interpret into the following advice:
Take special precautions, as unprotected skin can be damaged and can burn quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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 many days does it rain in May in Rethimno?

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

How cold is the water in May in Rethimno?

In Rethimno, in May, the average water temperature is 19.3°C (66.7°F). Swimming in 19.3°C (66.7°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Rethimno have in May?

In May, the average day length is 14h and 2min.

When are sunrise and sunset in May in Rethimno?

On the first day of May, sunrise is at 06:30 and sunset at 20:07. On the last day of the month, sunrise is at 06:08 and sunset at 20:30 EEST.

How many hours of sunshine does Rethimno have in May?

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

How high is the UV index in May in Rethimno?

The average daily maximum UV index in May in Rethimno is 9. A UV Index reading of 8 to 10 represents a very high health vulnerability from exposure to Sun's UV rays.
Average rainfall days
Average sunshine
Average UV index

Average temperature in May
Rethimno, Greece

Average temperature in May - Rethimno, Greece
  • Average high temperature in May: 24°C

The warmest month (with the highest average high temperature) is July (30°C).
The month with the lowest average high temperature is January (14°C).

  • Average low temperature in May: 15°C

The months with the highest average low temperature are July and August (21°C).
The coldest months (with the lowest average low temperature) are January and February (8°C).

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Average rainfall in May
Rethimno, Greece

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

The wettest month (with the highest rainfall) is January (142mm).
The driest months (with the least rainfall) are July and August (1mm).

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Average rainfall days in May
Rethimno, Greece

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

The month with the highest number of rainy days is December (13 days).
The months with the least rainy days are July and August (0 days).

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Average sea temperature in May
Rethimno, Greece

Average sea temperature in May - Rethimno, Greece
  • Average sea temperature in May: 19.3°C

The best month for swimming (with the highest average sea temperature) is August (25.9°C).
The coldest month (with the lowest average sea temperature) is February (16.1°C).

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

Average daylight in May / Average sunshine in May - Rethimno, Greece
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 31min).
The month with the shortest days is December (Average daylight: 9h and 49min).

  • Average sunshine in May: 10h

The months with the most sunshine are June, July and August (Average sunshine: 12h).
The months with the least sunshine are January and December (Average sunshine: 4h).

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Average UV index in May
Rethimno, Greece

Average UV index in May - Rethimno, Greece
  • Average UV index in May: 9

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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