May weather forecastRethimno, Greece

Dusk in the Venetian Rethimno harbor in Greece

May

Weather in May

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

Temperature

With the onset of May, Rethimno's average high-temperature experiences a slight rise, moving from April's agreeable 20°C (68°F) to a moderately hot 24°C (75.2°F). Throughout May, Rethimno registers a consistent average low-temperature of 15°C (59°F).

Rainfall

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

Sea temperature

In Rethimno, in May, the average water temperature is 19.3°C (66.7°F).
Note: Most people do not take pleasure in swimming in water at 19.3°C (66.7°F). The difficulty of managing breathing increases as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Rethimno, Greece, the average length of the day in May is 14h and 2min.
On the first day of the month, sunrise is at 06:29 and sunset at 20:08. On the last day of May, sunrise is at 06:08 and sunset at 20:31 EEST.

Sunshine

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

UV index

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 exposure to the Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 9 in May leads to these recommendations:
With the absence of protection, damage to skin and eyes can occur instantly. Ensure precautions are taken. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.

Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in May, in Rethimno, records 24°C (75.2°F), while the low-temperature is 15°C (59°F).

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

In Rethimno, the average seawater temperature in May is 19.3°C (66.7°F). 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).

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

In May, on the first day of the month, sunrise is at 06:29 and sunset at 20:08. On the last day of the month, sunrise is at 06:08 and sunset at 20:31 EEST.

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

In May, the average daily maximum UV index in Rethimno is 9. A UV Index estimate of 8 to 10 represents a very high hazard to health from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

20°C

24°C

28°C

Average low temperature

Average rainfall

Average rainfall days

Average sea temperature

Average daylight

Average sunshine

Average UV index

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).

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).

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).

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 and 0min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

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).