Skiathos
Greece
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Skiathos, Greece

Ships docked in the harbor of the stunning old town of Skiathos on Skiathos Island, Greece
Ships docked in the harbor of the stunning old town of Skiathos on Skiathos Island, Greece
The last month of the spring, May, is a warm month in Skiathos, Greece, with temperature in the range of an average low of 12°C (53.6°F) and an average high of 23°C (73.4°F).

Temperature

In Skiathos, the average high-temperature rises, from a comfortable 18°C (64.4°F) in April, to a moderately hot 23°C (73.4°F). In Skiathos, the average low-temperature is 12°C (53.6°F).

Rainfall

In May, the rain falls for 8 days. Throughout May, 36mm (1.4") of precipitation is accumulated. Throughout the year, there are 86 rainfall days, and 629mm (24.8") of precipitation is accumulated.

Sea temperature

In Skiathos, in May, the average water temperature is 18.1°C (64.6°F). For swimming, a surface water temperature of 18.1°C (64.6°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).

Daylight

In May, the average length of the day in Skiathos is 14.3h.

Sunshine

In Skiathos, the average sunshine 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 threat to health from the exposure to the Sun's UV rays for ordinary individuals.
The average daily UV index of 8 transform into the following instructions:
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.

What is the temperature in May in Skiathos?

The average high-temperature, in May, in Skiathos, is 23°C (73.4°F), while the average low-temperature is 12°C (53.6°F).

How many days does it rain in May in Skiathos?

In Skiathos, Greece, in May, during 8 rainfall days, 36mm (1.4") of precipitation is typically accumulated.

How cold is the water in May in Skiathos?

In May, the average sea temperature is 18.1°C (64.6°F). Swimming in 18.1°C (64.6°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

What is the average length of the day in May in Skiathos?

In May, the average length of the day is 14.3h.

How long on average sun shines in May in Skiathos?

The average sunshine in May is 10h.

How high is the UV index in May in Skiathos?

The average daily maximum UV index in May in Skiathos, Greece, is 8. A UV Index reading of 8 to 10 represents a very high health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in May - Skiathos, Greece
  • Average high temperature in May: 23°C

The warmest month (with the highest average high temperature) is July (30°C).
The month with the lowest average high temperature is January (10°C).

  • Average low temperature in May: 12°C

Months with the highest average low temperature are July and August (18°C).
Coldest months (with the lowest average low temperature) are January and February (3°C).

Average rainfall in May - Skiathos, Greece
  • Average rainfall in May: 36mm

The wettest month (with the highest rainfall) is December (97mm).
The driest month (with the lowest rainfall) is July (19mm).

Average rainfall days in May - Skiathos, Greece
  • Average rainfall days in May: 8 days

Months with the highest number of rainy days are November and December (10 days).
Months with the lowest number of rainy days are August and September (3 days).

Average sea temperature in May - Skiathos, Greece
  • Average sea temperature in May: 18.1°C

The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is March (14.2°C).

Average daylight in May / Average sunshine in May - Skiathos, Greece
  • Average daylight in May: 14.3h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in May: 10h

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

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

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