Dehiwala
Sri Lanka
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Dehiwala, Sri Lanka

August, the last month of the summer, in Dehiwala, is another tropical month, with average temperature ranging between max 30°C (86°F) and min 25°C (77°F).

Temperature

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

Rainfall

In Dehiwala, in August, it is raining for 11 days, with typically 116mm (4.6") of accumulated precipitation. Throughout the year, there are 139 rainfall days, and 2402mm (94.6") of precipitation is accumulated.

Sea temperature

August is the month with the coldest seawater, with an average sea temperature of 27.2°C (81°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 August, the average length of the day is 12.3h.

Sunshine

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

UV index

Months with the highest UV index in Dehiwala are February through October, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
The average daily UV index of 12 in August transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. 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 are the coldest months in Dehiwala?

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

What is the temperature in August in Dehiwala?

In August, in Dehiwala, 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 Dehiwala in August?

In Dehiwala, during August, the rain falls for 11 days and regularly aggregates up to 116mm (4.6") of precipitation.

When is the sea coldest in Dehiwala?

With an average sea temperature of 27.2°C (81°F), August is the month with the coldest seawater in Dehiwala. 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 warm is the water in August in Dehiwala?

In August, the average sea temperature in Dehiwala is 27.2°C (81°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 Dehiwala have in August?

In August, the average length of the day in Dehiwala is 12.3h.

What is the month with the least sunshine in Dehiwala?

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

How many hours of sunshine does Dehiwala have in August?

In Dehiwala, the average sunshine in August is 6h.

What are the months with the highest UV index in Dehiwala?

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

What is the UV index intensity in August in Dehiwala?

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

Warmest months (with the highest average high temperature) are March and 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 August: 25°C

Months with the highest average low temperature are May, June, July, August and September (25°C).
Coldest months (with the lowest average low temperature) are January and December (22°C).

Average rainfall in August - Dehiwala, Sri Lanka
  • Average rainfall in August: 116mm

The wettest month (with the highest rainfall) is May (382mm).
The driest month (with the lowest rainfall) is January (55mm).

Average rainfall days in August - Dehiwala, Sri Lanka
  • Average rainfall days in August: 11 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 August - Dehiwala, Sri Lanka
  • Average sea temperature in August: 27.2°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 (27.2°C).

Average daylight in August / Average sunshine in August - Dehiwala, Sri Lanka
  • Average daylight in August: 12.3h

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 August: 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 August - Dehiwala, 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).