July Weather in Chilaw, Sri Lanka

Last updated: August 31, 2025

In July, the average temperature in Chilaw, Sri Lanka is a warm 28°C (82°F), with minimums dipping to 25°C (78°F) and maximums reaching up to 30°C (86°F). Expect a fair amount of rain, with 123 mm (4.8 in) of precipitation spread across 23 days. The air is typically 82% humid, creating a tropical atmosphere.

July Temperature in Chilaw

In July in Chilaw, the average temperature is 28°C (82°F), with maximums reaching 30°C (86°F) and minimums dropping to as low as 25°C (78°F). This pleasant weather makes it an ideal time for outdoor activities and exploring all that Chilaw has to offer.

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

The chart illustrates July 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, July typically has an average temperature of 28°C (82°F), with highs reaching up to 30°C (86°F) and lows dropping to around 25°C (78°F).

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

July Precipitation in Chilaw

In Chilaw in July, the total precipitation amount is 123 mm (4.8 in), occurring over the course of 23 days.

July Precipitation Trends in Chilaw

The chart displays monthly precipitation patterns in Chilaw, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Chilaw, July typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 23 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Chilaw

In Chilaw in July humidity is 82%. With an average temperature of 28°C (82°F), this humidity feels like walking through a warm, dense blanket, making outdoor activities a challenge and necessitating frequent breaks to stay hydrated.

July Average Humidity in Chilaw

This chart illustrates the average monthly humidity levels in Chilaw, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Chilaw is approximately 82%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Chilaw

In Chilaw in July, 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 July

The chart shows the monthly maximum UV Index (UVI) for Chilaw in July, 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 July, the maximum UV index in Chilaw typically reaches 13, which falls under the extreme exposure category.

Data source: Chilaw July 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 July 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 July’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 July’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