August weather forecastBentota, Sri Lanka
August
Weather in August
In August, Bentota begins to transition out of the rainy season, although rainfall remains relatively high at 282mm (11.1"). August's temperature and weather conditions create an ideal background for witnessing the lush landscapes rejuvenated by the monsoon. Despite the rainfall seeing a decrease from previous months, it’s not substantial enough to significantly affect outdoor activities. The wind speed is still high, maintaining a weather pattern that allows visitors to enjoy the coastline engulfed by robust winds. August signifies the end of heavy rains, but the residual weather conditions make for a captivating time to visit Bentota.Temperature
The coldest time of the year is August, with temperatures averaging a high of 28.6°C (83.5°F) and a low of 25.5°C (77.9°F).Heat index
The heat index for August is estimated at a tropical 34°C (93.2°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.Note that heat index values are valued for light wind and location in the shade. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
June through August, with an average relative humidity of 83%, are the most humid months.Rainfall
In Bentota, in August, it is raining for 29.5 days, with typically 282mm (11.1") of accumulated precipitation. In Bentota, during the entire year, the rain falls for 273.8 days and collects up to 2059mm (81.06") of precipitation.Sea temperature
In Bentota, in August, the average water temperature is 27.4°C (81.3°F).Note: For any water activity, the surface water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are deemed excellent and incredibly pleasant for longer durations.
Daylight
The average length of the day in August is 12h and 20min.On the first day of August in Bentota, sunrise is at 06:04 and sunset at 18:28. On the last day of the month, sunrise is at 06:02 and sunset at 18:17 +0530.
Sunshine
In August, the average sunshine is 7.2h.UV index
The months with the lowest UV index are May, June and August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 6 during August translates into these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Bentota, Sri Lanka
- Average high temperature in August: 28.6°C
The warmest months (with the highest average high temperature) are March and April (31.3°C).
The month with the lowest average high temperature is August (28.6°C).
- Average low temperature in August: 25.5°C
The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.4°C).
Average pressure in August
Bentota, Sri Lanka
- Average pressure in August: 1009.2mbar
The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.7mbar).
Average wind speed in August
Bentota, Sri Lanka
- Average wind speed in August: 15.1km/h
The windiest month (with the highest average wind speed) is June (15.9km/h).
The calmest month (with the lowest average wind speed) is March (7.9km/h).
Average humidity in August
Bentota, Sri Lanka
- Average humidity in August: 83%
The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (75%).
Average rainfall in August
Bentota, Sri Lanka
- Average rainfall in August: 282mm
The wettest month (with the highest rainfall) is June (350mm).
The driest month (with the least rainfall) is January (25mm).
Average rainfall days in August
Bentota, Sri Lanka
- Average rainfall days in August: 29.5 days
The months with the highest number of rainy days are July and August (29.5 days).
The month with the least rainy days is January (8.9 days).
Average sea temperature in August
Bentota, Sri Lanka
- Average sea temperature in August: 27.4°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 July (27.3°C).
Average daylight in August /
Average sunshine in August
Bentota, Sri Lanka
- Average daylight in August: 12h and 18min
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 48min).
- Average sunshine in August: 7h and 12min
The month with the most sunshine is January (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 48min).
Average sunshine days in August
Bentota, Sri Lanka
- Average sunshine days in August: 0.5 days
The month with the most sunshine days is January (21 days).
The months with the least sunshine days are June and July (0.3 days).
Average UV index in August
Bentota, Sri Lanka
- Average UV index in August: 6
The months with the highest UV index are January, February, March, April, July, September, October, November and December (UV index 7).
The months with the lowest UV index are May, June and August (UV index 6).
Average cloud cover in August
Bentota, Sri Lanka
- Average cloud cover in August: 54
The month with the most cloud cover is June (Cloud cover 55).
The month with the least cloud cover is January (Cloud cover 24).
Average visibility in August
Bentota, Sri Lanka
- Average visibility in August: 9km
The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).





