Air Temperature

Highest Maximum 25.9°C 6th
Lowest Maximum 14.8°C 30th
Highest Minimum 21.3°C 7th 
Lowest Minimum 9.9°C 29th

 

Mean Maximum 21.2°C
Mean Minimum 14.6°C
Mean 18.0°C

 

Relative Humidity

Lowest Relative Humidity 49% 6th

 

Mean Relative Humidity 80.9%

 

Atmospheric Pressure

Highest Atmospheric Pressure 1025.3hPa 19th
Lowest Atmospheric Pressure 1003.1hPa 28th

 

Mean Atmospheric Pressure 1014.6hPa

 

Wind

Highest Gust 61.2km/h 29th

 

Mean Wind Speed 13.4km/h
Most Frequent Wind Direction Southeast

 

Precipitation

Total Rainfall During November 2021 177.5 mm
Total Rainfall Since Last 01/09 428.1 mm

 

Highest 24 Hour Total 61.3 mm 25th

 

Rain Days 11 days
Thunderstorm Days 6 days
Hail Days 2 days

 

Rainfall Events

 

01/11/2021 19.9 mm Thunderstorm
08/11/2021 0.3 mm Light Rain
09/11/2021 2.8 mm Showers
11/11/2021 48.8 mm Heavy Thunderstorms; Hail
15/11/2021 2.5 mm Isolated Shower
22/11/2021 2.8 mm Showers; Distant Thunder
25/11/2021 61.3 mm Heavy Thunderstorm; Hail
27/11/2021 3.3 mm Showers; Distant Thunder
28/11/2021 30.7 mm Steady Rain; Thunder
29/11/2021 4.1 mm Showers
30/11/2021 1.0 mm Isolated Shower

 

November 2021 Compared to the Climate Means

  Climate Mean November 2021 Anomaly
Mean Maximum Temperature 20.6°C 21.2°C +0.6°C
Mean Minimum Temperature 14.5°C 14.6°C +0.1°C
Mean Temperature 17.6°C 18.0°C +0.4°C
Mean Relative Humidity 77% 80.9% +3.9%
Mean Atmospheric Pressure 1017.9hPa 1014.6hPa -3.3hPa
Mean Wind Speed 16.3 km/h 13.4 km/h -2.9km/h
Total Rainfall 93.6 mm 177.5 mm +83.9 mm
Total Rainfall Since Last 01/09 232.4 mm 428.1 mm +195.7 mm
Total Rain Days 11 days 11 days /
Total Thunderstorm Days 4 days 6 days +2 days
Total Hail Days 1 day 2 days +1 day

 

Wetter than Average Autumn continues in November 2021

The wetter than average trend set earlier in autumn was maintained throughout the month of November 2021. A total of 177.5 mm of rain was measured by our weather station. This is almost double the climate norm of 93.6 mm. This year’s autumn is the wettest in years, and has helped relieve the drought that had gripped the Maltese Islands in previous years. This didn’t come without any consequences, unfortunately. The bulk of the rain came from rainfall events that dotted the second half of the month. There were 11 days of rain last month. 2 of these were severe rainfall events. The thunderstorms of 11th and 25th November both struck in the early hours. They each dumped in excess of 100 mm of rain over several localities, sparking flash floods. The one on the 25th was particularly dangerous, with a number of people having to be rescued from the flooding. Total rainfall since last September 1st now stands at 428.1 mm. That is more than what was measured throughout the 2020/2021 rainfall season.

With regards to temperature, November 2021 turned out to be marginally warmer, especially where daytime maximum temperatures are concerned. This is mainly due to a spell of balmy temperatures that lasted much of the first half of the month. Winds from the south fanned warm air from the Sahara Desert across the central Mediterranean, elevating temperatures to well above average. The return of the westerlies brought colder temperatures towards the end of the month. Last month’s mean temperature of 18.0°C was 0.4°C warmer than what one would expect in a typical November.

Rainfall Totals around the Maltese Islands in November 2021 (and since last September 1st):

Għarb – 177.5 mm (428.1 mm)

Marsalforn – 221.9 mm (496.4 mm)

Victoria – 171.2 mm (443.1 mm)

Xewkija – 216.0 mm (436.4 mm)

Nadur – 233.5 mm (482.5 mm)

Mellieħa – 236.8 mm (431.0 mm)

Buġibba – 230.2 (471.7 mm)

Naxxar – 225.8 mm (457.1 mm)

Dingli – 130.1 mm (361.8 mm)

Mġarr – 191.7 mm (443.9 mm)

Mosta – 164.1 mm (354.6 mm)

Msida – 176.2 mm (426.4 mm)

Sliema – 175.4 mm (414.3 mm)

Valletta – 115.8mm (277.4 mm)

Imqabba – 144.2 mm (420.3 mm)

Żabbar – 174.9 mm (467.4 mm)

Birżebbuġa – 105.6 mm (329.9 mm)

NATIONAL MEAN – 181.1 mm (420.3 mm)