Air Temperature

Highest Maximum 33.9°C 13th
Lowest Maximum 27.9°C 4th
Highest Minimum 26.2°C 21st
Lowest Minimum 19.8°C 2nd

 

Mean Maximum 30.3°C
Mean Minimum 23.0°C
Mean 26.7°C

 

Relative Humidity

Highest Relative Humidity 94% Numerous days
Lowest Relative Humidity 39% 27th

 

Mean Relative Humidity 78.1%

 

Wind

Highest Gust 35.4km/h 21st

 

Mean Wind Speed 8.6km/h
Most Frequent Wind Direction Northwest

 

Atmospheric Pressure

Highest Atmospheric Pressure 1019.3hPa 8th
Lowest Atmospheric Pressure 1010.2hPa 21st

 

Mean Atmospheric Pressure 1014.9hPa

 

Precipitation

Total Rainfall During August 2025 0.5 mm
Total Rainfall Since Last 01/09 503.9 mm

 

Highest 24 Hour Total 0.5 mm 17th

 

Rain Days 2 days
Thunderstorm Days 2 days
Hail Days 0 days

 

Rainfall Events

16/8/2025 0.0 mm Distant P.M. Thunderstorm
17/8/2025 0.5 mm A.M. Thunderstorm
29/8/2025 TR mm Isolated Light Rain

 

August 2025 Compared to the Climate Means

  Climate Mean August 2025 Anomaly
Mean Maximum Temperature 31.7°C 30.3°C  -1.4°C
Mean Minimum Temperature 23.3°C 23.0°C -0.3°C
Mean Temperature 27.5°C 26.7°C -0.8°C
Mean Relative Humidity 73.6% 78.1% +4.5%
Mean Atmospheric Pressure 1014.1hPa 1014.9hPa +0.8hPa
Total Rainfall 10.6 mm 0.5 mm -10.1 mm
Total Rainfall Since Last 01/09 529.4 mm 503.9 mm -25.5 mm
Total Rain Days 1 day 2 days +1 day
Total Thunderstorm Days 1 day 2 days +1 day
Total Hail Days 0 days 0 days /

 

Cooler than Average in August 2025

The third and final month of meteorological summer confirmed this year’s summer as a very forgiving one temperature-wise, but rather uncomfortable with regards to relative humidity. The mean temperature of 26.7°C stood 0.8°C below the average for this time of year. This was comprised by a mean maximum temperature of 30.3°C (1.4°C cooler than normal) and a mean minimum temperature of 23.0°C (0.3°C cooler than normal). Levels of relative humidity stood at an average of 78.1%. This made the cooler than average temperatures feel really warm. No intense heat spells were registered over the course of last month. In fact, the warmest day of the month registered a maximum temperature of ‘only’ 33.9°C. The elevated levels of relative humidity were due to a sea surface temperature which remained at 27°C + on the whole.

August was a mixed bag of spring weather. As spring settled in across the Maltese Islands, August was characterized by a mix of pleasant weather and occasional instability, including a day of intense thundery downpours. Despite the occasional unsettled spell, last month was warmer than average.

The days following the public holiday on the 15th lived up to their expectation of bringing to our shores some rain-bearing clouds. What started as a zone of instability over Sicily quickly spread south across the central Mediterranean. Two separate thunderstorms struck parts of the Maltese Islands; one in the afternoon hours of the 16th and another in the predawn hours of the 17th. Whilst only a measly 0.5 mm of rain was measured by our weather station in Gozo, several other localities registered greater rainfall amounts. Siġġiewi and Żurrieq, for instance, measured 56.4 mm and 42.2 mm respectively. Other localities around Malta recieved half an inch of rainfall. Gozo was less affected. The second thunderstorm, which struck in the dark hours, produced a beautiful display of lightning. On a separate occasion, southerly currents on the 29th brought with them overcast skies, a trace of rainfall and a dusting of desert sand.

Rainfall Totals around the Maltese Islands in August 2025 (and since last September 1st):

Kerċem: 0.5 mm (503.9 mm)

Victoria: 0.7 mm (521.0 mm)

Marsalforn: 0.0 mm (433.2 mm)

Xewkija: 0.0 mm (371.3 mm)

Nadur: 0.3 mm (484.6 mm)

Għajnsielem: 0.0 mm (421.0 mm)

Mellieħa: 6.4 mm (382.2 mm)

Buġibba: 8.9 mm (378.8 mm)

Mġarr: 18.5 mm (468.5 mm)

Naxxar: 16.0 mm (482.6 mm)

Mosta: 9.2 mm (469.4 mm)

Dingli: 0.0 mm (569.3 mm)

Pembroke: 11.4 mm (503.2 mm)

Msida: 24.7 mm (572.5 mm)

Sliema: 12.7 mm (462.3 mm)

Valletta: 20.0 mm (477.8 mm)

Fgura: 8.1 mm (555.5 mm)

Żejtun: 1.0 mm (500.2 mm)

Żabbar: 1.6 mm (553.8 mm)

Imqabba: 16.5 mm (545.6 mm)

Siġġiewi: 56.4 mm (542.1 mm)

Żurrieq: 42.2 mm (515.6 mm)

Marsaxlokk: 4.6 mm (388.4 mm)

NATIONAL MEAN: 10.9 mm (480.1 mm)