Santorini
Greece
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Santorini, Greece

The white houses on the Island of lovers overlooking clear blue waters with small boats sailing, in Santorini, Greece, a small mountain in the distance
The white houses on the Island of lovers overlooking clear blue waters with small boats sailing, in Santorini, Greece, a small mountain in the distance
The last month of the spring, May, is an agreeable month in Santorini, Greece, with temperature in the range of an average low of 15°C (59°F) and an average high of 22°C (71.6°F).

Temperature

In May, the average high-temperature slightly increases, from an enjoyable 19°C (66.2°F) in April, to a pleasant 22°C (71.6°F). In May, in Santorini, the average low-temperature is 15°C (59°F).

Rainfall

In Santorini, in May, it is raining for 3 days, with typically 14mm (0.6") of accumulated precipitation. In Santorini, during the entire year, the rain falls for 65 days and collects up to 554mm (21.8") of precipitation.

Sea temperature

In Santorini, the average seawater temperature in May is 19.2°C (66.6°F). For swimming, a surface water temperature of 19.2°C (66.6°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 Santorini is 14.1h.

Sunshine

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

UV index

In May, the average daily maximum UV index in Santorini, Greece, is 8. A UV Index of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV rays for ordinary individuals.
The average daily UV index of 8 in May transform into the following instructions:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in May in Santorini?

In May, in Santorini, Greece, the average high-temperature is 22°C (71.6°F), and the average low-temperature is 15°C (59°F).

How much does it rain in Santorini in May?

In Santorini, Greece, during May, the rain falls for 3 days and regularly aggregates up to 14mm (0.6") of precipitation.

What is the sea water temperature in May in Santorini?

In Santorini, in May, the average water temperature is 19.2°C (66.6°F). For most, swimming in 19.2°C (66.6°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).

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

The average length of the day in May in Santorini is 14.1h.

How long on average sun shines in May in Santorini?

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

What is the UV index intensity in May in Santorini?

In Santorini, the average daily maximum UV index in May is 8. A UV Index reading of 8 to 10 represents a very high health risk from the exposure to the Sun's UV rays.
Average temperature in May - Santorini, Greece
  • Average high temperature in May: 22°C

The warmest month (with the highest average high temperature) is July (28°C).
Months with the lowest average high temperature are January and February (14°C).

  • Average low temperature in May: 15°C

Months with the highest average low temperature are July and August (22°C).
Coldest months (with the lowest average low temperature) are January and February (9°C).

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

The wettest month (with the highest rainfall) is January (114mm).
Driest months (with the lowest rainfall) are July and August (1mm).

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

The month with the highest number of rainy days is December (12 days).
Months with the lowest number of rainy days are June, July, August and September (1 days).

Average sea temperature in May - Santorini, Greece
  • Average sea temperature in May: 19.2°C

The best month for swimming (with the highest average sea temperature) is August (25.7°C).
The coldest month (with the lowest average sea temperature) is February (16.5°C).

Average daylight in May / Average sunshine in May - Santorini, Greece
  • Average daylight in May: 14.1h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in May: 10h

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

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

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).