Sliema
Malta
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Sliema, Malta

The first month of the autumn, September, is also a moderately hot month in Sliema, Malta, with average temperature varying between 20°C (68°F) and 28°C (82.4°F).

Temperature

In Sliema, Malta, the average high-temperature is practically the same as in August - a moderately hot 28°C (82.4°F). In Sliema, the average low-temperature is 20°C (68°F).

Rainfall

In Sliema, during September, the rain falls for 4 days and regularly aggregates up to 36mm (1.4") of precipitation. Throughout the year, in Sliema, Malta, there are 80 rainfall days, and 499mm (19.6") of precipitation is accumulated.

Sea temperature

In Sliema, the average seawater 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 Sliema, the average length of the day is 12.4h.

Sunshine

In September, the average sunshine in Sliema, Malta, is 9h.

UV index

In Sliema, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for ordinary 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Sliema?

The average high-temperature, in September, in Sliema, Malta, is 28°C (82.4°F), while the average low-temperature is 20°C (68°F).

How many days does it rain in September in Sliema?

In September, the rain falls for 4 days. Throughout September, 36mm (1.4") of precipitation is accumulated.

What is the water temperature in September in Sliema?

In Sliema, Malta, the average seawater temperature in September 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.

What is the average length of the day in September in Sliema?

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

How many hours of sunshine does Sliema have in September?

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

What is the UV index reading in September in Sliema?

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

Warmest months (with the highest average high temperature) are July and August (30°C).
Months with the lowest average high temperature are January and February (15°C).

  • Average low temperature in September: 20°C

The month with the highest average low temperature is August (22°C).
Coldest months (with the lowest average low temperature) are January and February (9°C).

Average rainfall in September - Sliema, Malta
  • Average rainfall in September: 36mm

The wettest month (with the highest rainfall) is December (99mm).
The driest month (with the lowest rainfall) is July (0mm).

Average rainfall days in September - Sliema, 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 - Sliema, 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 - Sliema, 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: 12h).
Months with least sunshine are January and December (Average sunshine: 5).

Average UV index in September - Sliema, 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).