May Weather in Katunayaka, Sri Lanka

Last updated: August 31, 2025

In Katunayaka, Sri Lanka, the average temperature in May typically hovers around 28°C (83°F). You'll experience a minimum of 24°C (75°F) and a maximum of 33°C (92°F). However, be prepared for some rain, as the area sees about 266 mm (10.5 in) of precipitation spread over 29 days. With an average humidity level of 76%, it's wise to stay hydrated during your visit!

May Temperature in Katunayaka

In May in Katunayaka, the average temperature is 28°C (83°F), with maximums reaching 33°C (92°F) and minimums dipping as low as 24°C (75°F). This warm and pleasant climate makes Katunayaka an ideal destination for travelers seeking a sunny getaway.

May Weather in Katunayaka: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Katunayaka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Katunayaka, May typically has an average temperature of 28°C (83°F), with highs reaching up to 33°C (92°F) and lows dropping to around 24°C (75°F).

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

May Precipitation in Katunayaka

In Katunayaka in May, the precipitation amount is 266 mm (10.5 in) over the course of 29 days.

May Precipitation Trends in Katunayaka

The chart displays monthly precipitation patterns in Katunayaka, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Katunayaka, May typically receives around 266 mm (10.5 inches) of precipitation spread over approximately 29 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Katunayaka

In Katunayaka in May, humidity is 76%. With an average temperature of 28°C (83°F), this humidity feels like a warm, sticky embrace, making outdoor activities challenging and requiring travelers to stay hydrated and take frequent breaks in the shade.

May Average Humidity in Katunayaka

This chart illustrates the average monthly humidity levels in Katunayaka, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Katunayaka is approximately 76%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Katunayaka

In Katunayaka in May, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Katunayaka, you can check here.

Maximum UV Index Levels in Katunayaka for May

The chart shows the monthly maximum UV Index (UVI) for Katunayaka in May, 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 May, the maximum UV index in Katunayaka typically reaches 14, which falls under the extreme exposure category.

Data source: Katunayaka May 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 May Weather in Katunayaka Compares to Other Months

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

This table compares monthly weather conditions in Katunayaka, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	57 mm (2.2 inches)	77%	extreme
February Weather	28°C (83°F)	30 mm (1.2 inches)	73%	extreme
March Weather	29°C (84°F)	93 mm (3.6 inches)	74%	extreme
April Weather	28°C (83°F)	145 mm (5.7 inches)	74%	extreme
May Weather	28°C (83°F)	266 mm (10.5 inches)	76%	extreme
June Weather	28°C (82°F)	248 mm (9.8 inches)	82%	extreme
July Weather	27°C (82°F)	193 mm (7.6 inches)	82%	extreme
August Weather	27°C (81°F)	236 mm (9.3 inches)	83%	extreme
September Weather	27°C (81°F)	233 mm (9.2 inches)	82%	extreme
October Weather	27°C (80°F)	358 mm (14.1 inches)	81%	extreme
November Weather	27°C (80°F)	370 mm (14.6 inches)	80%	extreme
December Weather	27°C (80°F)	134 mm (5.3 inches)	80%	very high