Galle
Sri Lanka
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Galle, Sri Lanka

September, the first month of the autumn, in Galle, is still a warm month, with average temperature ranging between min 24°C (75.2°F) and max 29°C (84.2°F).

Temperature

The coldest months are January, June through December, with an average high-temperature of 29°C (84.2°F).

Rainfall

In September, in Galle, the rain falls for 12 days. Throughout September, 213mm (8.4") of precipitation is accumulated. In Galle, during the entire year, the rain falls for 122 days and collects up to 2402mm (94.6") of precipitation.

Sea temperature

In September, the average sea temperature is 28.1°C (82.6°F).
Note: 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 September, the average length of the day in Galle, Sri Lanka, is 12.2h.

Sunshine

May through November, with an average of 6h of sunshine, are months with the least sunshine in Galle, Sri Lanka.

UV index

Months with the highest UV index in Galle, Sri Lanka, are January through October, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 12 translate into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the coldest month in Galle?

The coldest months are January, June through December, with an average high-temperature of 29°C (84.2°F).

What is the temperature in September in Galle?

The average high-temperature, in September, in Galle, is 29°C (84.2°F), while the average low-temperature is 24°C (75.2°F).

How many days does it rain in September in Galle?

In September, in Galle, the rain falls for 12 days. Throughout September, 213mm (8.4") of precipitation is accumulated.

What is the sea water temperature in September in Galle?

In Galle, in September, the average water temperature is 28.1°C (82.6°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.

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

In Galle, the average length of the day in September is 12.2h.

What is the month with the least sunshine in Galle?

Months with the least sunshine in Galle, Sri Lanka, are May through November, with an average of 6h of sunshine.

How many hours of sunshine does Galle have in September?

In September, the average sunshine is 6h.

When is the highest UV index in Galle?

Months with the highest UV index in Galle are January through October, with an average maximum UV index of 12.

What is the UV index intensity in September in Galle?

In September, the average daily maximum UV index is 12. A UV Index reading of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV rays.
Average temperature in September - Galle, Sri Lanka
  • Average high temperature in September: 29°C

Warmest months (with the highest average high temperature) are March and April (31°C).
Months with the lowest average high temperature are January, June, July, August, September, October, November and December (29°C).

  • Average low temperature in September: 24°C

The month with the highest average low temperature is May (25°C).
Coldest months (with the lowest average low temperature) are January, February, November and December (22°C).

Average rainfall in September - Galle, Sri Lanka
  • Average rainfall in September: 213mm

The wettest month (with the highest rainfall) is October (340mm).
The driest month (with the lowest rainfall) is February (86mm).

Average rainfall days in September - Galle, Sri Lanka
  • Average rainfall days in September: 12 days

Months with the highest number of rainy days are October and November (14 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature in September - Galle, Sri Lanka
  • Average sea temperature in September: 28.1°C

The best month for swimming (with the highest average sea temperature) is April (29.6°C).
The coldest month (with the lowest average sea temperature) is August (27.5°C).

Average daylight in September / Average sunshine in September - Galle, Sri Lanka
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 12.5h).
Months with shortest days are January, November and December (Average daylight: 11.8h).

  • Average sunshine in September: 6h

Months with most sunshine are February and March (Average sunshine: 8h).
Months with least sunshine are May, June, July, August, September, October and November (Average sunshine: 6).

Average UV index in September - Galle, Sri Lanka
  • Average UV index in September: 12

Months with the highest UV index are January, February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are November and December (UV index 11).