August weather forecast
Gampaha, Sri Lanka

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Weather in August

In Gampaha, August brings in a marginal surge in rainfall to 210mm (8.27"), prolonging the monsoon season. The cloud percentage scales up to 54%, forming a thick cover that further limits sunshine. Nevertheless, the daylight remains adequate for daily activities. The wind retains its strength, aiding in cooling the environment. Amid the rains, life in Gampaha goes on, with residents embracing the prolonged monsoon season.

Temperature

With the advent of August, Gampaha's high-temperatures adjust to a still warm 29.3°C (84.7°F), closely aligning with the preceding month. Gampaha's August nights experience a subtle temperature dip to an average of 25.4°C (77.7°F).

Heat index

The heat index in August is appraised at a very hot 36°C (96.8°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The months with the highest humidity are June through August, with an average relative humidity of 82%.

Rainfall

In August, the rain falls for 28.4 days. Throughout August, 210mm (8.27") of precipitation is accumulated. Throughout the year, in Gampaha, Sri Lanka, there are 265.4 rainfall days, and 1744mm (68.66") of precipitation is accumulated.

Daylight

The average length of the day in August is 12h and 21min.
On the first day of the month, sunrise is at 06:03 and sunset at 18:29. On the last day of August, sunrise is at 06:02 and sunset at 18:17 +0530.

Sunshine

The average sunshine in August in Gampaha is 7.5h.

UV index

The months with the lowest UV index are May, June, August and October, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 6 during August morphs into the following directions:
Deflect overexposure. Sun protection is a necessity. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

How hot is it in Gampaha in August?

During August, Gampaha experiences an average high-temperature of 29.3°C (84.7°F) and a low-temperature of 25.4°C (77.7°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in August is appraised at 36°C (96.8°F).

What is the most humid month in Gampaha?

The months with the highest humidity in Gampaha are June through August, with an average relative humidity of 82%.

What is the average humidity in August in Gampaha?

In Gampaha, Sri Lanka, the average relative humidity in August is 82%.

How many days does it rain in August in Gampaha?

In August, in Gampaha, Sri Lanka, the rain falls for 28.4 days. Throughout August, 210mm (8.27") of precipitation is accumulated.

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

The average day length in August in Gampaha is 12h and 21min.

When is the sunrise / sunset in August in Gampaha?

On the first day of August in Gampaha, Sri Lanka, sunrise is at 06:03 and sunset at 18:29. On the last day of the month, sunrise is at 06:02 and sunset at 18:17 +0530.

How long on average sun shines in August in Gampaha?

In August, the average sunshine duration in Gampaha is 7.5h.

What is the month with the lowest UV index in Gampaha?

The months with the lowest UV index are May, June, August and October, with an average maximum UV index of 6.

What is the UV index reading in August in Gampaha?

The average daily maximum UV index in August in Gampaha, Sri Lanka, is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.

Average temperature in August
Gampaha, Sri Lanka

Average temperature in August - Gampaha, Sri Lanka
  • Average high temperature in August: 29.3°C

The warmest month (with the highest average high temperature) is March (32.1°C).
The month with the lowest average high temperature is July (29.2°C).

  • Average low temperature in August: 25.4°C

The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is January (22.8°C).

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Average pressure in August
Gampaha, Sri Lanka

Average pressure in August - Gampaha, Sri Lanka
  • Average pressure in August: 1008.8mbar

The month with the highest atmospheric pressure is January (1011.7mbar).
The months with the lowest atmospheric pressure are May and June (1008.4mbar).

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Average wind speed in August
Gampaha, Sri Lanka

Average wind speed in August - Gampaha, Sri Lanka
  • Average wind speed in August: 17km/h

The windiest month (with the highest average wind speed) is June (18.3km/h).
The calmest month (with the lowest average wind speed) is March (9.1km/h).

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Average humidity in August
Gampaha, Sri Lanka

Average humidity in August - Gampaha, Sri Lanka
  • Average humidity in August: 82%

The months with the highest relative humidity are June, July and August (82%).
The months with the lowest relative humidity are January and February (73%).

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Average rainfall in August
Gampaha, Sri Lanka

Average rainfall in August - Gampaha, Sri Lanka
  • Average rainfall in August: 210mm

The wettest month (with the highest rainfall) is June (231mm).
The driest month (with the least rainfall) is January (29mm).

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Average rainfall days in August
Gampaha, Sri Lanka

Average rainfall days in August - Gampaha, Sri Lanka
  • Average rainfall days in August: 28.4 days

The month with the highest number of rainy days is August (28.4 days).
The month with the least rainy days is January (9.7 days).

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

Average daylight in August / Average sunshine in August - Gampaha, 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: 7h and 3min

The months with the most sunshine are January, February, March and April (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).

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Average sunshine days in August
Gampaha, Sri Lanka

Average sunshine days in August - Gampaha, Sri Lanka
  • Average sunshine days in August: 1.2 days

The month with the most sunshine days is January (20 days).
The month with the least sunshine days is August (1.2 days).

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Average UV index in August
Gampaha, Sri Lanka

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

The months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
The months with the lowest UV index are May, June, August and October (UV index 6).

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Average cloud cover in August
Gampaha, Sri Lanka

Average cloud cover in August - Gampaha, Sri Lanka
  • Average cloud cover in August: 54

The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 21).

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Average visibility in August
Gampaha, Sri Lanka

Average visibility in August - Gampaha, Sri Lanka
  • Average visibility in August: 9km

The months with the highest visibility are January, February, March, April, June, July, September and December (10km).
The months with the lowest visibility are May, August, October and November (9km).

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Gampaha, Sri Lanka

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