December weather forecast
Valletta, Malta

Finally, December in Valletta holds the winter at its doorsteps with its weather reflecting a cool and rain-soaked ambiance. Rainfall accumulates to a sizeable 112mm (4.41"), making it the wettest month of the year. The sea, also succumbing to the cold, reaches its lowest temperature. Despite the onset of winter, daylight persists for nearly 10 hours, providing a good amount of clear sky. The UV index concludes the year at a minimum, signaling a nearly negligible risk of overexposure to the sun.

Temperature

A subtle change in temperatures is noted in Valletta as November gives way to December, with average highs reducing from an agreeable 20.1°C (68.2°F) to a refreshing 16.7°C (62.1°F). Throughout December, the average low-temperature dips to a fresh 11°C (51.8°F).

Rainfall

December is the month with the most rainfall in Valletta. Rain falls for 13 days and accumulates 112mm (4.41") of precipitation.

Sea temperature

In December, the average sea temperature in Valletta is 18.2°C (64.8°F).
Note: Swimming in 18.2°C (64.8°F) is not an enjoyable experience for most. Breathing becomes progressively more challenging as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

With an average of 9h and 48min of daylight, December has the shortest days of the year in Valletta.
On the first day of December in Valletta, sunrise is at 6:54 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:58 pm CET.

Sunshine

With an average of 5.2h of sunshine, December has the least sunshine of the year in Valletta.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 2 suggests this advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.