August Weather in Chilaw, Sri Lanka

Last updated: August 31, 2025

In Chilaw, Sri Lanka, the average temperature in August reaches a warm 27°C (81°F). Expect minimums of 25°C (77°F) and maximums around 30°C (85°F). With 155 mm (6.1 in) of precipitation over 24 days, it's wise to prepare for some rainy spells. The air stays humid, with an average humidity level of 83%, creating a warm and tropical atmosphere.

August Temperature in Chilaw

In August in Chilaw, the average temperature is 27°C (81°F). The maximum can reach 30°C (85°F), and the minimum can drop to as low as 25°C (77°F). This pleasant weather makes Chilaw an ideal destination for those seeking warm and comfortable conditions for outdoor adventures.

August Weather in Chilaw: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Chilaw, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chilaw, August typically has an average temperature of 27°C (81°F), with highs reaching up to 30°C (85°F) and lows dropping to around 25°C (77°F).

Data source: Temperature data for Chilaw generated using information from the Copernicus Climate Change Service.

August Precipitation in Chilaw

In Chilaw in August, the precipitation amount is 155 mm (6.1 in) over the course of 24 days.

August Precipitation Trends in Chilaw

The chart displays monthly precipitation patterns in Chilaw, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Chilaw, August typically receives around 155 mm (6.1 inches) of precipitation spread over approximately 24 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

August Humidity in Chilaw

In Chilaw in August humidity is 83%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making sightseeing and outdoor activities feel more exhausting and requiring frequent breaks to relax in the shade or cool off.

August Average Humidity in Chilaw

This chart illustrates the average monthly humidity levels in Chilaw, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Chilaw is approximately 83%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Chilaw

In Chilaw in August, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Chilaw.

Maximum UV Index Levels in Chilaw for August

The chart shows the monthly maximum UV Index (UVI) for Chilaw in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Chilaw typically reaches 13, which falls under the extreme exposure category.

Data source: Chilaw August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How August Weather in Chilaw Compares to Other Months

Weather in Chilaw varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Chilaw, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Chilaw, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (80°F)	45 mm (1.8 inches)	77%	extreme
February Weather	27°C (82°F)	18 mm (0.7 inches)	73%	extreme
March Weather	28°C (83°F)	83 mm (3.3 inches)	74%	extreme
April Weather	28°C (83°F)	122 mm (4.8 inches)	74%	extreme
May Weather	28°C (83°F)	266 mm (10.5 inches)	76%	extreme
June Weather	28°C (83°F)	204 mm (8.0 inches)	82%	extreme
July Weather	28°C (82°F)	123 mm (4.8 inches)	82%	extreme
August Weather	27°C (81°F)	155 mm (6.1 inches)	83%	extreme
September Weather	27°C (81°F)	199 mm (7.8 inches)	82%	extreme
October Weather	27°C (81°F)	311 mm (12.2 inches)	81%	extreme
November Weather	27°C (81°F)	308 mm (12.1 inches)	80%	extreme
December Weather	27°C (81°F)	139 mm (5.5 inches)	80%	very high