Valletta
Malta
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Valletta, Malta

The cityscape of Valletta, Malta, viewed from the clear blue waters of the sea
The cityscape of Valletta, Malta, viewed from the clear blue waters of the sea
May, the last month of the spring, in Valletta, is a moderately hot month, with temperature in the range of an average low of 14.9°C (58.8°F) and an average high of 23.3°C (73.9°F).

Temperature

In May, the average high-temperature slightly increases, from an enjoyable 19.1°C (66.4°F) in April, to a warm 23.3°C (73.9°F). The average low-temperature, in Valletta, Malta, is 14.9°C (58.8°F).

Rainfall

In May, in Valletta, the rain falls for 3 days. Throughout May, 7mm (0.3") of precipitation is accumulated. In Valletta, during the entire year, the rain falls for 80 days and collects up to 553mm (21.8") of precipitation.

Sea temperature

In May, the average sea temperature in Valletta is 18.8°C (65.8°F).
Note: 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).

Daylight

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

Sunshine

In May, the average sunshine in Valletta, Malta, is 10h.

UV index

The average daily maximum UV index is 9. A UV Index estimate of 8 to 10 represents a very high health hazard from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 9 in May 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. 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 Valletta?

The average high-temperature, in May, in Valletta, is 23.3°C (73.9°F), while the average low-temperature is 14.9°C (58.8°F).

How many days does it rain in May in Valletta?

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

How cold is the water in May in Valletta?

In May, the average sea temperature in Valletta 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 Valletta?

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

How many hours of sunshine does Valletta have in May?

The average sunshine in May is 10h.

What is the UV index intensity in May in Valletta?

In Valletta, Malta, 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 unsafe exposure to the Sun's UV rays.
Average temperature in May - Valletta, Malta
  • Average high temperature in May: 23.3°C

Warmest months (with the highest average high temperature) are July and August (30.7°C).
The month with the lowest average high temperature is January (15.2°C).

  • Average low temperature in May: 14.9°C

The month with the highest average low temperature is August (21.8°C).
The coldest month (with the lowest average low temperature) is January (9.2°C).

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

The wettest month (with the highest rainfall) is December (112mm).
The driest month (with the lowest rainfall) is July (0mm).

Average rainfall days in May - Valletta, 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 - Valletta, 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 - Valletta, 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: 12.1h).
The month with least sunshine is December (Average sunshine: 5.2h).

Average UV index in May - Valletta, 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).