April Weather in Chilaw, Sri Lanka

Last updated: August 31, 2025

In April, the average temperature in Chilaw, Sri Lanka hovers around 28°C (83°F), providing a warm and inviting atmosphere. Expect minimum temperatures of 25°C (77°F) and highs reaching up to 33°C (92°F), contributing to the area's tropical feel. However, be prepared for 122 mm (4.8 in) of precipitation spread over 25 days, ensuring the lush surroundings are always vibrant. With an average humidity of 74%, the air feels both rich and refreshing, perfect for those who enjoy a humid tropical climate.

April Temperature in Chilaw

In April in Chilaw, the average temperature is 28°C (83°F), with a maximum reaching 33°C (92°F) and a minimum dipping as low as 25°C (77°F). This makes it a perfect time to enjoy outdoor activities and explore the beautiful surroundings.

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

The chart illustrates April 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, April typically has an average temperature of 28°C (83°F), with highs reaching up to 33°C (92°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.

April Precipitation in Chilaw

In Chilaw in April, the total precipitation amount is 122 mm (4.8 in), which occurs over a duration of 25 days.

April Precipitation Trends in Chilaw

The chart displays monthly precipitation patterns in Chilaw, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Chilaw, April typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 25 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Chilaw

In Chilaw in April, humidity is 74%. With an average temperature of 28°C (83°F), this humidity feels like a heavy blanket enveloping you, making travel feel more tiring as every step is met with a warm, sticky embrace that can drain your energy quickly.

April Average Humidity in Chilaw

This chart illustrates the average monthly humidity levels in Chilaw, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Chilaw is approximately 74%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Chilaw

In Chilaw in April, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Chilaw.

Maximum UV Index Levels in Chilaw for April

The chart shows the monthly maximum UV Index (UVI) for Chilaw in April, 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 April, the maximum UV index in Chilaw typically reaches 15, which falls under the extreme exposure category.

Data source: Chilaw April 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 April 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 April’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 April’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