May Weather in Horana South, Sri Lanka

Last updated: August 31, 2025

In May, the average temperature in Horana South, Sri Lanka hovers around 28°C (82°F), with a comfortable minimum of 24°C (75°F) and a warm maximum of 33°C (92°F). During this month, you can expect a total precipitation of 306 mm (12.1 in) spread across 30 days, paired with an average humidity level of 76%, creating a vibrant and lush atmosphere.

May Temperature in Horana South

In May in Horana South, the average temperature is 28°C (82°F), with a maximum reaching 33°C (92°F) and a minimum dipping to 24°C (75°F). This pleasant climate makes it an ideal time for travelers to enjoy outdoor activities and explore the local attractions.

May Weather in Horana South: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Horana South, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Horana South, May typically has an average temperature of 28°C (82°F), with highs reaching up to 33°C (92°F) and lows dropping to around 24°C (75°F).

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

May Precipitation in Horana South

In Horana South, in May, the precipitation amount is 306 mm (12.1 in) over a span of 30 days.

May Precipitation Trends in Horana South

The chart displays monthly precipitation patterns in Horana South, 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 Horana South, May typically receives around 306 mm (12.1 inches) of precipitation spread over approximately 30 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Horana South

In Horana South in May humidity is 76%. With an average temperature of 28°C (82°F), this humidity feels like a warm blanket enveloping you, making travel feel sticky and sluggish as you navigate through the heat, leaving you constantly seeking shade and refreshing beverages.

May Average Humidity in Horana South

This chart illustrates the average monthly humidity levels in Horana South, 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 Horana South 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 Horana South

In Horana South 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 Horana South, you can check here.

Maximum UV Index Levels in Horana South for May

The chart shows the monthly maximum UV Index (UVI) for Horana South 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 Horana South typically reaches 14, which falls under the extreme exposure category.

Data source: Horana South 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 Horana South Compares to Other Months

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

This table compares monthly weather conditions in Horana South, 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)	87 mm (3.4 inches)	77%	extreme
February Weather	28°C (82°F)	87 mm (3.4 inches)	73%	extreme
March Weather	28°C (83°F)	159 mm (6.3 inches)	74%	extreme
April Weather	28°C (83°F)	154 mm (6.1 inches)	74%	extreme
May Weather	28°C (82°F)	306 mm (12.1 inches)	76%	extreme
June Weather	28°C (82°F)	287 mm (11.3 inches)	82%	extreme
July Weather	27°C (81°F)	212 mm (8.4 inches)	82%	extreme
August Weather	27°C (81°F)	249 mm (9.8 inches)	83%	extreme
September Weather	27°C (81°F)	251 mm (9.9 inches)	82%	extreme
October Weather	27°C (80°F)	352 mm (13.9 inches)	81%	extreme
November Weather	27°C (80°F)	323 mm (12.7 inches)	80%	extreme
December Weather	27°C (80°F)	207 mm (8.2 inches)	80%	very high