December weather forecastSliema, Malta
December
Weather in December
Moving into December, Sliema, Malta, experiences average temperatures of 17.1°C (62.8°F), thus wrapping the year with mild winter weather. The amount of rainfall decreases to 42mm (1.65"), providing slight relief from November's wet conditions. The appeal of December is found in its crisp mornings, mild afternoons, chilly evenings, and the onset of the festive season. The sea cools to 18.2°C (64.8°F), bringing back cooler hues to the azure Mediterranean Sea. Being the month with the shortest daylight hours, December brings cozy and shorter days to an end.Temperature
December ushers in a minute temperature change in Sliema, with average high-temperatures reducing from November's agreeable 20.4°C (68.7°F) to a comfortable 17.1°C (62.8°F). Sliema observes a minimal variance in temperature, with a consistent average low of 15.9°C (60.6°F) during the nights of December.Humidity
December is the least humid month, with an average relative humidity of 69%.Rainfall
In Sliema, in December, during 14.5 rainfall days, 42mm (1.65") of precipitation is typically accumulated. Throughout the year, there are 107.6 rainfall days, and 347mm (13.66") of precipitation is accumulated.Sea temperature
In Sliema, in December, the average water temperature is 18.2°C (64.8°F).Note: Swimming in water at 18.2°C (64.8°F) is not a pleasurable experience for most. The task of managing breathing becomes more challenging as the water temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.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, in Sliema, sunrise is at 7:12 am and sunset at 4:58 pm CET.
Sunshine
The average sunshine in December in Sliema is 6.4h.UV index
The months with the lowest UV index in Sliema are January, February and December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, a regular UV index of 4 translates into these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sliema, Malta
- Average high temperature in December: 17.1°C
The warmest month (with the highest average high temperature) is August (27.4°C).
The month with the lowest average high temperature is February (14.9°C).
- Average low temperature in December: 15.9°C
The month with the highest average low temperature is August (26.4°C).
The coldest month (with the lowest average low temperature) is February (13.5°C).
Average pressure in December
Sliema, Malta
- Average pressure in December: 1019.3mbar
The month with the highest atmospheric pressure is December (1019.3mbar).
The month with the lowest atmospheric pressure is July (1013.9mbar).
Average wind speed in December
Sliema, Malta
- Average wind speed in December: 27.6km/h
The windiest month (with the highest average wind speed) is January (27.9km/h).
The calmest month (with the lowest average wind speed) is August (13.2km/h).
Average humidity in December
Sliema, Malta
- Average humidity in December: 69%
The month with the highest relative humidity is April (77%).
The month with the lowest relative humidity is December (69%).
Average rainfall in December
Sliema, Malta
- Average rainfall in December: 42mm
The wettest month (with the highest rainfall) is November (76mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in December
Sliema, Malta
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is November (15.6 days).
The month with the least rainy days is July (0.9 days).
Average sea temperature in December
Sliema, Malta
- Average sea temperature in December: 18.2°C
The best month for swimming (with the highest average sea temperature) is August (26.1°C).
The coldest months (with the lowest average sea temperature) are February and March (15.4°C).
Average daylight in December /
Average sunshine in December
Sliema, Malta
- Average daylight in December: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 6h and 24min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in December
Sliema, Malta
- Average sunshine days in December: 12.4 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is November (12 days).
Average UV index in December
Sliema, Malta
- Average UV index in December: 4
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).
Average cloud cover in December
Sliema, Malta
- Average cloud cover in December: 32
The month with the most cloud cover is January (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Sliema, Malta
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
