Negombo
Sri Lanka
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Negombo, Sri Lanka

August, the last month of the summer, in Negombo, is another warm month, with average temperature varying between 29°C (84.2°F) and 25°C (77°F).

Temperature

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

Rainfall

In Negombo, during 9 rainfall days, 109mm (4.3") of precipitation is typically accumulated. Throughout the year, there are 125 rainfall days, and 2345mm (92.3") of precipitation is accumulated.

Sea temperature

With an average sea temperature of 27°C (80.6°F), August is the month 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.

Daylight

The average length of the day in August is 12.4h.

Sunshine

June through October, with an average of 6h of sunshine, are months with the least sunshine.

UV index

Months with the highest UV index are February through October, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from unsafe exposure to the UV radiation for the ordinary person.
In August, the average maximum UV index of 12 translate into the following recommendations:
Take all necessary precautions, as unprotected skin 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. 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. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What are the coldest months in Negombo?

June through December, with an average high-temperature of 29°C (84.2°F), are the coldest months in Negombo, Sri Lanka.

What is the temperature in August in Negombo?

In Negombo, Sri Lanka, in August, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 25°C (77°F).

How much does it rain in Negombo in August?

In Negombo, Sri Lanka, in August, it is raining for 9 days, with typically 109mm (4.3") of accumulated precipitation.

What is the month with the coldest sea water in Negombo?

With an average sea temperature of 27°C (80.6°F), August is the month with the coldest seawater in Negombo. 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 sea water temperature in August in Negombo?

In August, the average sea temperature in Negombo, Sri Lanka, is 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 many hours of daylight does Negombo have in August?

In August, the average length of the day is 12.4h.

What is the month with the least sunshine in Negombo?

June through October, with an average of 6h of sunshine, are months with the least sunshine.

How long on average sun shines in August in Negombo?

In August, the average sunshine is 6h.

When is the highest UV index in Negombo?

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

What is the UV index reading in August in Negombo?

In August, the average daily maximum UV index in Negombo is 12. A UV Index value of 11, and more, symbolizes an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in August - Negombo, Sri Lanka
  • Average high temperature in August: 29°C

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

  • Average low temperature in August: 25°C

The month with the highest average low temperature is May (26°C).
Coldest months (with the lowest average low temperature) are January, February and December (22°C).

Average rainfall in August - Negombo, Sri Lanka
  • Average rainfall in August: 109mm

The wettest month (with the highest rainfall) is May (371mm).
The driest month (with the lowest rainfall) is February (69mm).

Average rainfall days in August - Negombo, Sri Lanka
  • Average rainfall days in August: 9 days

Months with the highest number of rainy days are October and November (15 days).
Months with the lowest number of rainy days are January and February (4 days).

Average sea temperature in August - Negombo, Sri Lanka
  • Average sea temperature in August: 27°C

The best month for swimming (with the highest average sea temperature) is April (29.7°C).
The coldest month (with the lowest average sea temperature) is August (27°C).

Average daylight in August / Average sunshine in August - Negombo, Sri Lanka
  • Average daylight in August: 12.4h

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

  • Average sunshine in August: 6h

The month with most sunshine is March (Average sunshine: 9h).
Months with least sunshine are June, July, August, September and October (Average sunshine: 6).

Average UV index in August - Negombo, Sri Lanka
  • Average UV index in August: 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).