Arugam Bay
Sri Lanka
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Arugam Bay, Sri Lanka

The first month of the autumn, September, is also a hot month in Arugam Bay, Sri Lanka, with temperature in the range of an average low of 24°C (75.2°F) and an average high of 31°C (87.8°F).

Temperature

In September, the average high-temperature remains the same as in August - a still tropical 31°C (87.8°F). The average low-temperature, in Arugam Bay, is 24°C (75.2°F).

Rainfall

In Arugam Bay, in September, during 9 rainfall days, 78mm (3.1") of precipitation is typically accumulated. Throughout the year, there are 104 rainfall days, and 1573mm (61.9") of precipitation is accumulated.

Sea temperature

Months with the coldest seawater in Arugam Bay are January, February, July through September and December, with an average sea temperature of 28°C (82.4°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In Arugam Bay, the average length of the day is 12.2h.

Sunshine

May through December, with an average of 6h of sunshine, are months with the least sunshine.

UV index

Months with the highest UV index in Arugam Bay are February through October, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme health hazard from the exposure to the Sun's UV rays for the average person.
The average daily UV index of 12 transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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 strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Arugam Bay?

In September, in Arugam Bay, the average high-temperature is 31°C (87.8°F), and the average low-temperature is 24°C (75.2°F).

How many days does it rain in September in Arugam Bay?

In Arugam Bay, during September, the rain falls for 9 days and regularly aggregates up to 78mm (3.1") of precipitation.

What are the months with the coldest sea water in Arugam Bay?

January, February, July through September and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater. 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 sea water temperature in September in Arugam Bay?

In Arugam Bay, Sri Lanka, in September, the average water temperature is 28°C (82.4°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Arugam Bay have in September?

The average length of the day in September is 12.2h.

What is the month with the least sunshine in Arugam Bay?

May through December, with an average of 6h of sunshine, are months with the least sunshine.

How long on average sun shines in September in Arugam Bay?

In Arugam Bay, the average sunshine in September is 6h.

When is the highest UV index in Arugam Bay?

February through October, with an average maximum UV index of 12, are months with the highest UV index.

What is the UV index reading in September in Arugam Bay?

In Arugam Bay, Sri Lanka, the average daily maximum UV index in September is 12. A UV Index reading of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Arugam Bay, Sri Lanka
  • Average high temperature in September: 31°C

Warmest months (with the highest average high temperature) are April, May, June and July (32°C).
Months with the lowest average high temperature are January and December (29°C).

  • Average low temperature in September: 24°C

Months with the highest average low temperature are April, May, June, July and August (25°C).
Coldest months (with the lowest average low temperature) are January, February and December (23°C).

Average rainfall in September - Arugam Bay, Sri Lanka
  • Average rainfall in September: 78mm

The wettest month (with the highest rainfall) is December (311mm).
The driest month (with the lowest rainfall) is June (38mm).

Average rainfall days in September - Arugam Bay, Sri Lanka
  • Average rainfall days in September: 9 days

The month with the highest number of rainy days is November (15 days).
Months with the lowest number of rainy days are February and March (5 days).

Average sea temperature in September - Arugam Bay, Sri Lanka
  • Average sea temperature in September: 28°C

The best month for swimming (with the highest average sea temperature) is April (30°C).
Coldest months (with the lowest average sea temperature) are January, February, July, August, September and December (28°C).

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

Months with the longest days are June and July (Average daylight: 12.5h).
The month with shortest days is December (Average daylight: 11.7h).

  • Average sunshine in September: 6h

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

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

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