Valletta
Malta
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Valletta, Malta

The cityscape of Valletta, Malta, viewed from the clear blue waters of the sea
The cityscape of Valletta, Malta, viewed from the clear blue waters of the sea
The first month of the autumn, September, is still a warm month in Valletta, Malta, with temperature in the range of an average high of 28°C (82.4°F) and an average low of 20.1°C (68.2°F).

Temperature

In Valletta, the average high-temperature in September is relatively the same as in August - a warm 28°C (82.4°F). In September, the average low-temperature is 20.1°C (68.2°F).

Rainfall

In September, the rain falls for 4 days. Throughout September, 40mm (1.6") of precipitation is accumulated. In Valletta, Malta, during the entire year, the rain falls for 80 days and collects up to 553mm (21.8") of precipitation.

Sea temperature

In September, the average sea temperature is 25.7°C (78.3°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Valletta, Malta, the average length of the day in September is 12.4h.

Sunshine

The average sunshine is 9h.

UV index

The average daily maximum UV index in Valletta, Malta, is 7. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to the UV radiation for average individuals.
The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in September in Valletta?

The average high-temperature, in September, is 28°C (82.4°F), while the average low-temperature is 20.1°C (68.2°F).

How many days does it rain in September in Valletta?

In Valletta, in September, during 4 rainfall days, 40mm (1.6") of precipitation is typically accumulated.

How warm is the water in September in Valletta?

In September, the average sea temperature in Valletta, Malta, is 25.7°C (78.3°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Valletta have in September?

In Valletta, the average length of the day in September is 12.4h.

How long on average sun shines in September in Valletta?

The average sunshine in September in Valletta, Malta, is 9h.

What is the UV index reading in September in Valletta?

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in September - Valletta, Malta
  • Average high temperature in September: 28°C

Warmest months (with the highest average high temperature) are July and August (30.7°C).
The month with the lowest average high temperature is January (15.2°C).

  • Average low temperature in September: 20.1°C

The month with the highest average low temperature is August (21.8°C).
The coldest month (with the lowest average low temperature) is January (9.2°C).

Average rainfall in September - Valletta, Malta
  • Average rainfall in September: 40mm

The wettest month (with the highest rainfall) is December (112mm).
The driest month (with the lowest rainfall) is July (0mm).

Average rainfall days in September - Valletta, Malta
  • Average rainfall days in September: 4 days

Months with the highest number of rainy days are January and December (13 days).
The month with the lowest number of rainy days is July (0 days).

Average sea temperature in September - Valletta, Malta
  • Average sea temperature in September: 25.7°C

The best month for swimming (with the highest average sea temperature) is August (26.1°C).
Coldest months (with the lowest average sea temperature) are February and March (15.4°C).

Average daylight in September / Average sunshine in September - Valletta, Malta
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in September: 9h

The month with most sunshine is July (Average sunshine: 12.1h).
The month with least sunshine is December (Average sunshine: 5.2h).

Average UV index in September - Valletta, Malta
  • Average UV index in September: 7

Months with the highest UV index are June and July (UV index 10).
Months with the lowest UV index are January and December (UV index 2).