May weather forecast
Valletta, Malta

May ushers in the early breath of summer, with a considerable leap in the city's overall temperature. The weather shifts dramatically, resulting in a more substantial temperature high of 23.3°C (73.9°F) in Valletta. This month witnesses the sun at its flirtiest, generously providing 14.1 hours of daylight. Rainfall in the city becomes a rarity, settling to just 7mm (0.28"). With a UV index of 9, residents and tourists alike need to stay vigilant against sun damage.

Temperature

Valletta in May experiences a slight uptick in the average high-temperature, adjusting from April's comfortable 19.1°C (66.4°F) to a moderately hot 23.3°C (73.9°F). Valletta experiences a nighttime temperature average of 14.9°C (58.8°F) during May.

Rainfall

In Valletta, in May, it is raining for 3 days, with typically 7mm (0.28") of accumulated precipitation. Throughout the year, there are 80 rainfall days, and 553mm (21.77") of precipitation is accumulated.

Sea temperature

In Valletta, in May, the average water temperature is 18.8°C (65.8°F).
Note: A surface water temperature of 18.8°C (65.8°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).

Daylight

In Valletta, the average length of the day in May is 14h and 4min.
On the first day of May, sunrise is at 6:08 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:12 pm CEST.

Sunshine

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

UV index

In Valletta, the average daily maximum UV index in May is 9. A UV Index reading of 8 to 10 represents a very high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 9 in May interprets into the following recommendations:
Always safeguard yourself; without protection, skin and eyes can get damaged instantly. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.