August weather forecast
Sirimalwatta, Sri Lanka

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Weather in August

August, the last month of the summer in Sirimalwatta, is another warm month, with an average temperature varying between 29.2°C (84.6°F) and 21.2°C (70.2°F).

Temperature

The ushering in of August brings an average high-temperature of a still warm 29.2°C (84.6°F), closely mirroring the 29.3°C (84.7°F) of July. Sirimalwatta's temperature in August lowers to a consistent average of 21.2°C (70.2°F) during the nights.

Heat index

The heat index for August is evaluated at a very hot 35°C (95°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In August, the average relative humidity in Sirimalwatta is 77%.

Rainfall

In Sirimalwatta, in August, it is raining for 25.8 days, with typically 84mm (3.31") of accumulated precipitation. In Sirimalwatta, during the entire year, the rain falls for 278.4 days and collects up to 1466mm (57.72") of precipitation.

Daylight

The average length of the day in August is 12h and 21min.
On the first day of August, sunrise is at 06:00 and sunset at 18:26. On the last day of the month, sunrise is at 05:59 and sunset at 18:15 +0530.

Sunshine

The average sunshine in August is 8.7h.

UV index

The months with the highest UV index are January through September, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In August, a regular UV index of 6 translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. 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.
Updated: Feb 6, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot is it in Sirimalwatta in August?

In Sirimalwatta, 29.2°C (84.6°F) is the average high-temperature and 21.2°C (70.2°F) is the average low-temperature during August. The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 35°C (95°F).

What is the average humidity in August in Sirimalwatta?

In August, the average relative humidity in Sirimalwatta is 77%.

How much does it rain in Sirimalwatta in August?

In August, in Sirimalwatta, the rain falls for 25.8 days. Throughout August, 84mm (3.31") of precipitation is accumulated.

What is the average length of the day in August in Sirimalwatta?

In August, the average day length is 12h and 21min.

When is the sunrise / sunset in August in Sirimalwatta?

In August, on the first day of the month, sunrise is at 06:00 and sunset at 18:26. On the last day of the month, in Sirimalwatta, sunrise is at 05:59 and sunset at 18:15 +0530.

How many hours of sunshine does Sirimalwatta have in August?

In August, the average sunshine duration in Sirimalwatta is 8.7h.

What is the month with the highest UV index in Sirimalwatta?

The months with the highest UV index in Sirimalwatta are January through September, November and December, with an average maximum UV index of 6.

What is the UV index reading in August in Sirimalwatta?

In Sirimalwatta, Sri Lanka, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.

Average temperature in August
Sirimalwatta, Sri Lanka

Average temperature in August - Sirimalwatta, Sri Lanka
  • Average high temperature in August: 29.2°C

The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is December (27.5°C).

  • Average low temperature in August: 21.2°C

The months with the highest average low temperature are May and June (21.8°C).
The coldest month (with the lowest average low temperature) is February (18.1°C).

Average pressure in August
Sirimalwatta, Sri Lanka

Average pressure in August - Sirimalwatta, Sri Lanka
  • Average pressure in August: 1008.5mbar

The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).

Average wind speed in August
Sirimalwatta, Sri Lanka

Average wind speed in August - Sirimalwatta, Sri Lanka
  • Average wind speed in August: 11.6km/h

The windiest month (with the highest average wind speed) is June (13.5km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).

Average humidity in August
Sirimalwatta, Sri Lanka

Average humidity in August - Sirimalwatta, Sri Lanka
  • Average humidity in August: 77%

The month with the highest relative humidity is December (84%).
The month with the lowest relative humidity is March (74%).

Average rainfall in August
Sirimalwatta, Sri Lanka

Average rainfall in August - Sirimalwatta, Sri Lanka
  • Average rainfall in August: 84mm

The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the least rainfall) is January (38mm).

Average rainfall days in August
Sirimalwatta, Sri Lanka

Average rainfall days in August - Sirimalwatta, Sri Lanka
  • Average rainfall days in August: 25.8 days

The month with the highest number of rainy days is May (28.6 days).
The month with the least rainy days is January (14.1 days).

Average daylight in August /
Average sunshine in August
Sirimalwatta, Sri Lanka

Average daylight in August / Average sunshine in August - Sirimalwatta, Sri Lanka
  • Average daylight in August: 12h and 2min

The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).

  • Average sunshine in August: 8h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in August
Sirimalwatta, Sri Lanka

Average sunshine days in August - Sirimalwatta, Sri Lanka
  • Average sunshine days in August: 2.6 days

The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is May (1.2 days).

Average UV index in August
Sirimalwatta, Sri Lanka

Average UV index in August - Sirimalwatta, Sri Lanka
  • Average UV index in August: 6

The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).
The month with the lowest UV index is October (UV index 5).

Average cloud cover in August
Sirimalwatta, Sri Lanka

Average cloud cover in August - Sirimalwatta, Sri Lanka
  • Average cloud cover in August: 34

The months with the most cloud cover are November and December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 27).

Average visibility in August
Sirimalwatta, Sri Lanka

Average visibility in August - Sirimalwatta, Sri Lanka
  • Average visibility in August: 10km

The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, November and December (8km).

Sirimalwatta, Sri Lanka

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