August weather forecast
Negombo, Sri Lanka

August's weather conditions display minor changes compared to July in Negombo, Sri Lanka. Slight ups and downs in temperature, wind speed, and humidity characterize this month. There is a very slight dip in daily sunshine hours, but sufficient daylight remains to explore the city's attractions. While the sea temperature drops, August still offers satisfying conditions for sea-bathing. Water and natural lovers can appreciate Negombo's vibrant ecosystem that thrives during this period.

Temperature

August's average high-temperature is a still moderately hot 29.3°C (84.7°F), maintaining a close comparison with July's 29.2°C (84.6°F). In August, Negombo's nighttime temperatures demonstrate a slight decrease, stabilizing at an average of 25.4°C (77.7°F).

Heat index

August's average heat index is computed to be a very hot 36°C (96.8°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

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

Rainfall

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

Sea temperature

August is the month with the coldest seawater in Negombo, with an average sea temperature of 27°C (80.6°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.

Daylight

In Negombo, the average length of the day in August is 12h and 21min.
On the first day of the month, sunrise is at 06:04 and sunset at 18:29. On the last day of August, sunrise is at 06:03 and sunset at 18:18 +0530.

Sunshine

In August, the average sunshine in Negombo, Sri Lanka, is 7.5h.

UV index

May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index in Negombo. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 6 in August interprets into the following advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. 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. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Caution! The Sun's UV rays become stronger due to reflections from water and sand.