Sliema
Malta
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Sliema, Malta

The last month of the spring, May, is a moderately hot month in Sliema, Malta, with average temperature varying between 15°C (59°F) and 23°C (73.4°F).

Temperature

In Sliema, the average high-temperature in May slightly increases, from an enjoyable 19°C (66.2°F) in April, to a warm 23°C (73.4°F). In Sliema, the average low-temperature is 15°C (59°F).

Rainfall

In May, in Sliema, the rain falls for 3 days. Throughout May, 7mm (0.3") of precipitation is accumulated. In Sliema, Malta, during the entire year, the rain falls for 80 days and collects up to 499mm (19.6") of precipitation.

Sea temperature

In Sliema, the average seawater temperature is 18.8°C (65.8°F).
Note: Swimming in 18.8°C (65.8°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

In Sliema, the average length of the day in May is 14.1h.

Sunshine

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

UV index

In May, the average daily maximum UV index is 9. A UV Index estimate of 8 to 10 represents a very high health vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 9 transform into the following instructions:
Take extra precautions. Protection against sun damage is required. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in May in Sliema?

In Sliema, Malta, in May, the average high-temperature is 23°C (73.4°F), and the average low-temperature is 15°C (59°F).

How many days does it rain in May in Sliema?

In May, in Sliema, Malta, the rain falls for 3 days. Throughout May, 7mm (0.3") of precipitation is accumulated.

What is the sea temperature in May in Sliema?

In May, the average sea temperature is 18.8°C (65.8°F). For swimming, a surface water temperature of 18.8°C (65.8°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).

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

In Sliema, the average length of the day in May is 14.1h.

How many hours of sunshine does Sliema have in May?

In May, the average sunshine is 10h.

What is the UV index reading in May in Sliema?

In May, the average daily maximum UV index in Sliema is 9. A UV Index estimate of 8 to 10 represents a very high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in May - Sliema, Malta
  • Average high temperature in May: 23°C

Warmest months (with the highest average high temperature) are July and August (30°C).
Months with the lowest average high temperature are January and February (15°C).

  • Average low temperature in May: 15°C

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

Average rainfall in May - Sliema, Malta
  • Average rainfall in May: 7mm

The wettest month (with the highest rainfall) is December (99mm).
The driest month (with the lowest rainfall) is July (0mm).

Average rainfall days in May - Sliema, Malta
  • Average rainfall days in May: 3 days

Months with the highest number of rainy days are January and December (13 days).
The month with the lowest number of rainy days is July (0 days).

Average sea temperature in May - Sliema, Malta
  • Average sea temperature in May: 18.8°C

The best month for swimming (with the highest average sea temperature) is August (26.1°C).
Coldest months (with the lowest average sea temperature) are February and March (15.4°C).

Average daylight in May / Average sunshine in May - Sliema, Malta
  • 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: 9.8h).

  • Average sunshine in May: 10h

The month with most sunshine is July (Average sunshine: 12h).
Months with least sunshine are January and December (Average sunshine: 5).

Average UV index in May - Sliema, Malta
  • 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).