Warmer and Drier in December 2023
Air Temperature
Highest Maximum | 22.8°C | 2nd |
Lowest Maximum | 15.6°C | 18th |
Highest Minimum | 19.8°C | 1st |
Lowest Minimum | 10.3°C | 29th |
Mean Maximum | 17.9°C |
Mean Minimum | 13.6°C |
Mean | 15.7°C |
Relative Humidity
Highest Relative Humidity | 93% | Numerous days |
Lowest Relative Humidity | 55% | 16th |
Mean Relative Humidity | 76.7% |
Wind
Highest Gust | 53.1km/h | 22nd |
Mean Wind Speed | 13.3km/h |
Most Frequent Wind Direction | Northwest |
Atmospheric Pressure
Highest Atmospheric Pressure | 1030.0hPa | 18th |
Lowest Atmospheric Pressure | 1003.4hPa | 9th |
Mean Atmospheric Pressure | 1018.6hPa |
Precipitation
Total Rainfall During December 2023 | 37.2 mm |
Total Rainfall Since Last 01/09 | 130.2 mm |
Highest 24 Hour Total | 17.6 mm | 18th |
Rain Days | 14 days |
Thunderstorm Days | 1 day |
Hail Days | 1 day |
Rainfall Events
5/12/2023 | 0.3 mm | Light Rain |
6/12/2023 | 0.9 mm | Light Rain |
7/12/2023 | 1.7 mm | Light Rain |
8/12/2023 | 1.3 mm | Light Rain |
9/12/2023 | 9.0 mm | Showers |
10/12/2023 | 0.3 mm | Light Rain |
14/12/2023 | 0.5 mm | Light Rain |
15/12/2023 | 1.0 mm | Light Rain |
16/12/2023 | 0.0 mm | Distant Thunderstorms and Hail |
17/12/2023 | 2.5 mm | Showers |
18/12/2023 | 17.6 mm | Rainy |
20/12/2023 | 1.0 mm | Light Rain |
21/12/2023 | 0.3 mm | Light Rain |
22/12/2023 | 0.8 mm | Light Rain |
December 2023 Compared to the Climate Means
Climate Mean | December 2023 | Anomaly | |
Mean Maximum Temperature | 17.1°C | 17.9°C | +0.8°C |
Mean Minimum Temperature | 11.8°C | 13.6°C | +1.8°C |
Mean Temperature | 14.5°C | 15.7°C | +1.2°C |
Mean Relative Humidity | 79.3% | 76.7% | -2.6% |
Mean Atmospheric Pressure | 1018.0hPa | 1018.6hPa | +0.6hPa |
Total Rainfall | 83.3 mm | 37.2 mm | -46.1 mm |
Total Rainfall Since Last 01/09 | 320.5 mm | 130.2 mm | -190.3 mm |
Total Rain Days | 12 days | 14 days | +2days |
Total Thunderstorm Days | 3 days | 1 day | -2days |
Total Hail Days | 2 days | 1 day | -1day |
Warmer and Drier in December 2023
December 2023, the final month of the year and the first month of the meteorological winter, continued the trend of warmer and drier than average weather set by previous months.
With a mean temperature of 15.7°C, December 2023 was 1.2°C warmer than the norm. The anomaly was more pronounced with minimum temperatures. Whilst maximum temperatures were 0.8°C warmer than average, minimum temperatures exceeded the climatic norm by a staggering 1.8°C. The opening two days were the month’s warmest, with a 22.8°C maximum temperature being registered on the 2nd. The coldest temperature last month was registered in the predawn hours of the 29th, when thermometers recorded a minimum temperature of 10.3°C. Minimum temperatures exceeded the climate norm on a staggering 22 nights.
December 2023 was significantly drier than average. A meagre 37.2 mm of rain was measured by our weather station in Għarb. At 45.4 mm, the national mean was only slightly higher. This is less than half what one would expect in December. Despite this, rain was observed on a total 14 days. The vast majority of these yielded less than 1 mm each, with light rain being the most common form of precipitation in December 2023. There were three main episodes of instability. The one from the 16th through to the 18th accounted for the month’s only day to feature thunder and hail. With a total of 17.6 mm over 24 hours, the 18th was last month’s wettest day.
There were also three episodes of strong wind. These coincided with the rainy days; one at the start of the month, another halfway through the month and another just before Christmas Day. The highest gust reached Force 8 from the Northwest on the 22nd of the month.
Rainfall Totals around the Maltese Islands in December 2023 (and since last December 1st):
Għarb: 37.2 mm (130.2 mm)
Victoria: 36.8 mm (126.0 mm)
Xewkija: 25.2 mm (83.8 mm)
Nadur: 39.3 mm (140.7 mm)
Marsalforn: 25.8 mm (91.8 mm)
Mellieħa: 27.4 mm (101.6 mm)
Buġibba: 47.4 mm (133.6 mm)
Mġarr: 45.9 mm (137.5 mm)
Naxxar: 57.1 mm (152.1 mm)
Mosta: 67.2 mm (150.0 mm)
Dingli: 62.6 mm (155.6 mm)
Msida: 43.7 mm (141.6 mm)
Valletta: 27.2 mm (104.1 mm)
Imqabba: 74.2 mm (159.0 mm)
Birżebbuġa: 46.6 mm (135.6 mm)
Sliema: 52.1 mm (134.4 mm)
Fgura: 56.2 mm (139.9 mm)
NATIONAL MEAN: 45.4 mm (130.4 mm)