Maha Gonadoowa
Sri Lanka
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Maha Gonadoowa, Sri Lanka

September, the first month of the autumn, in Maha Gonadoowa, is still a tropical month, with average temperature fluctuating between 30°C (86°F) and 25°C (77°F).

Temperature

June through December, with an average high-temperature of 30°C (86°F), are the coldest months.

Rainfall

In Maha Gonadoowa, during September, the rain falls for 14 days and regularly aggregates up to 258mm (10.2") of precipitation. In Maha Gonadoowa, during the entire year, the rain falls for 137 days and collects up to 2572mm (101.3") of precipitation.

Sea temperature

July through September, with an average sea temperature of 27°C (80.6°F), are months with the coldest seawater in Maha Gonadoowa, Sri Lanka. 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 Maha Gonadoowa is 12.2h.

Sunshine

May through October, with an average of 6h of sunshine, are months with the least sunshine in Maha Gonadoowa.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index in Maha Gonadoowa. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from the exposure to the Sun's UV rays for average individuals.
The average daily UV index of 12 in September transform into the following instructions:
Practice all-important precautions. Light skin people may get burned in less than 5 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. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the coldest month in Maha Gonadoowa?

June through December, with an average high-temperature of 30°C (86°F), are the coldest months in Maha Gonadoowa.

What is the temperature in September in Maha Gonadoowa?

In Maha Gonadoowa, Sri Lanka, in September, the average high-temperature is 30°C (86°F), and the average low-temperature is 25°C (77°F).

How much does it rain in Maha Gonadoowa in September?

In Maha Gonadoowa, Sri Lanka, in September, during 14 rainfall days, 258mm (10.2") of precipitation is typically accumulated.

When is the sea coldest in Maha Gonadoowa?

Through and September, with an average sea temperature of 27°C (80.6°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.

How warm is the water in September in Maha Gonadoowa?

In Maha Gonadoowa, in September, the average water temperature is 27°C (80.6°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.

How many hours of daylight does Maha Gonadoowa have in September?

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

What is the month with the least sunshine in Maha Gonadoowa?

May through October, with an average of 6h of sunshine, are months with the least sunshine in Maha Gonadoowa.

How long on average sun shines in September in Maha Gonadoowa?

In Maha Gonadoowa, Sri Lanka, the average sunshine in September is 6h.

What is the month with the highest UV index in Maha Gonadoowa?

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

What is the UV index reading in September in Maha Gonadoowa?

In Maha Gonadoowa, Sri Lanka, the average daily maximum UV index in September is 12. A UV Index value of 11, and more, symbolizes an extreme health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in September - Maha Gonadoowa, Sri Lanka
  • Average high temperature in September: 30°C

The warmest month (with the highest average high temperature) is April (32°C).
Months with the lowest average high temperature are June, July, August, September, October, November and December (30°C).

  • Average low temperature in September: 25°C

Months with the highest average low temperature are May, June, July, August and September (25°C).
The coldest month (with the lowest average low temperature) is January (22°C).

Average rainfall in September - Maha Gonadoowa, Sri Lanka
  • Average rainfall in September: 258mm

The wettest month (with the highest rainfall) is May (393mm).
The driest month (with the lowest rainfall) is January (65mm).

Average rainfall days in September - Maha Gonadoowa, Sri Lanka
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is October (16 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature in September - Maha Gonadoowa, Sri Lanka
  • Average sea temperature in September: 27°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 July, August and September (27°C).

Average daylight in September / Average sunshine in September - Maha Gonadoowa, 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 and March (Average sunshine: 9h).
Months with least sunshine are May, June, July, August, September and October (Average sunshine: 6).

Average UV index in September - Maha Gonadoowa, 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).