May weather forecastAlonnisos, Greece

May

Weather in May

The last month of the spring, May, is an agreeable month in Alonnisos, Greece, with an average temperature fluctuating between 22°C (71.6°F) and 13°C (55.4°F).

Temperature

The shift from April to May is marked by an increase in the average high-temperature, moving from a comfortable 17°C (62.6°F) to a pleasant 22°C (71.6°F). During the month of May, the temperature falls to an average of 13°C (55.4°F).

Rainfall

In Alonnisos, during May, the rain falls for 7 days and regularly aggregates up to 36mm (1.42") of precipitation. Throughout the year, there are 79 rainfall days, and 725mm (28.54") of precipitation is accumulated.

Sea temperature

In Alonnisos, the average seawater temperature in May is 17°C (62.6°F).
Note: Most people do not enjoy swimming in water that is 17°C (62.6°F). Breathing becomes increasingly challenging as the water temperature dips under 21°C (69.8°F).

Daylight

In May, the average length of the day is 14h and 20min.
On the first day of the month, sunrise is at 06:25 and sunset at 20:17. On the last day of May, sunrise is at 06:00 and sunset at 20:44 EEST.

Sunshine

The average sunshine in May is 10h.

UV index

In May, the average daily maximum UV index is 8. A UV Index reading of 8 to 10 represents a very high health hazard from unsafe exposure to UV radiation for average individuals.
Note: In May, a regular UV index of 8 translates into these guidelines:
Take all necessary measures. Eyes and skin are at risk if left unprotected. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.

Frequently asked questions

In May, the average high-temperature and low-temperature are 22°C (71.6°F) and 13°C (55.4°F) respectively.

In Alonnisos, in May, it is raining for 7 days, with typically 36mm (1.42") of accumulated precipitation.

In Alonnisos, in May, the average water temperature is 17°C (62.6°F). For swimming, a surface water temperature of 17°C (62.6°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).

In Alonnisos, the average day length in May is 14h and 20min.

On the first day of May, sunrise is at 06:25 and sunset at 20:17. On the last day of the month, sunrise is at 06:00 and sunset at 20:44 EEST.

In May, the average sunshine duration is 10h.

In May, the average daily maximum UV index is 8. A UV Index estimate of 8 to 10 represents a very high hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average rainfall
Average rainfall days
Average sea temperature
Average sunshine
Average UV index

Average temperature in May
Alonnisos, Greece

  • Average high temperature in May: 22°C

The warmest months (with the highest average high temperature) are July and August (28°C).
The month with the lowest average high temperature is January (10°C).

  • Average low temperature in May: 13°C

The months with the highest average low temperature are July and August (19°C).
The coldest month (with the lowest average low temperature) is January (4°C).

Average rainfall in May
Alonnisos, Greece

  • Average rainfall in May: 36mm

The wettest month (with the highest rainfall) is December (119mm).
The driest month (with the least rainfall) is July (22mm).

Average rainfall days in May
Alonnisos, Greece

  • Average rainfall days in May: 7 days

The month with the highest number of rainy days is December (10 days).
The months with the least rainy days are July, August and September (3 days).

Average sea temperature in May
Alonnisos, Greece

  • Average sea temperature in May: 17°C

The best months for swimming (with the highest average sea temperature) are July and August (24°C).
The coldest months (with the lowest average sea temperature) are January, February and March (14°C).

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

  • Average daylight in May: 14h and 18min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in May: 10h

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

Average UV index in May
Alonnisos, Greece

  • Average UV index in May: 8

The months with the highest UV index are June and July (UV index 9).
The months with the lowest UV index are January, November and December (UV index 2).