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

December brings a slight decrease in the average high-temperature, shifting from an agreeable 20.1°C (68.2°F) in November to an enjoyable 16.7°C (62.1°F). Throughout December, the temperature falls to an average low of 11°C (51.8°F).

Rainfall

The month with the most rainfall is December, when the rain falls for 13 days and typically aggregates up to 112mm (4.41") of precipitation.

Sea temperature

In Valletta, the average seawater temperature in December is 18.2°C (64.8°F).
Note: The majority find it unenjoyable to swim in 18.2°C (64.8°F). Breathing becomes tougher as the water temperature descends under 21°C (69.8°F).

Daylight

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

Sunshine

The month with the least sunshine is December, with an average of 5.2h of sunshine.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.