Rethimno
Greece
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Rethimno, Greece

Dusk in the Venetian Rethimno harbor in Greece, with calm waters and heavily cloudy skies
Dusk in the Venetian Rethimno harbor in Greece, with calm waters and heavily cloudy skies
May, the last month of the spring, in Rethimno, is a warm month, with average temperature fluctuating between 15°C (59°F) and 24°C (75.2°F).

Temperature

In May, the average high-temperature marginally rises, from an agreeable 20°C (68°F) in April, to a warm 24°C (75.2°F). The average low-temperature, in Rethimno, is 15°C (59°F).

Rainfall

In Rethimno, in May, during 3 rainfall days, 14mm (0.6") of precipitation is typically accumulated. In Rethimno, Greece, during the entire year, the rain falls for 67 days and collects up to 664mm (26.1") of precipitation.

Sea temperature

In Rethimno, the average seawater temperature is 19.3°C (66.7°F). For most, swimming in 19.3°C (66.7°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

The average length of the day in Rethimno, Greece, is 14h.

Sunshine

In Rethimno, Greece, the average sunshine is 10h.

UV index

The average daily maximum UV index in Rethimno is 9. A UV Index of 8 to 10 symbolizes a very high health vulnerability from unsafe exposure to the UV radiation for the average person.
The average daily UV index of 9 transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged 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.

What is the temperature in May in Rethimno?

In Rethimno, in May, the average high-temperature is 24°C (75.2°F), and the average low-temperature is 15°C (59°F).

How much does it rain in Rethimno in May?

In Rethimno, Greece, in May, during 3 rainfall days, 14mm (0.6") of precipitation is typically accumulated.

How cold is the water in May in Rethimno?

In May, the average sea temperature is 19.3°C (66.7°F). For most, swimming in 19.3°C (66.7°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

How many hours of daylight does Rethimno have in May?

In Rethimno, the average length of the day in May is 14h.

How many hours of sunshine does Rethimno have in May?

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

What is the UV index intensity in May in Rethimno?

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 the UV radiation.
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

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

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

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

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).
Months with the lowest number of rainy days are July and August (0 days).

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).

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

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in May: 10h

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

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

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