September Weather in Battaramulla South, Sri Lanka

Last updated: August 31, 2025

In Battaramulla South, Sri Lanka, the average temperature in September is a warm 27°C (81°F), with a minimum of 23°C (73°F) and a maximum of 32°C (90°F). You'll want to prepare for the wet weather, as precipitation averages 245 mm (9.6 in) over 27 days. The air is quite humid, with an average humidity of 82%, adding to the tropical feel of the season!

September Temperature in Battaramulla South

In September in Battaramulla South, the average temperature is 27°C (81°F). The maximum can reach 32°C (90°F), and the minimum can be as low as 23°C (73°F). This pleasant climate makes Battaramulla South an ideal destination for travelers seeking warm and enjoyable weather.

September Weather in Battaramulla South: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Battaramulla South, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Battaramulla South, September typically has an average temperature of 27°C (81°F), with highs reaching up to 32°C (90°F) and lows dropping to around 23°C (73°F).

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

September Precipitation in Battaramulla South

In Battaramulla South in September, the precipitation amount is 245 mm (9.6 in) over the course of 27 days.

September Precipitation Trends in Battaramulla South

The chart displays monthly precipitation patterns in Battaramulla South, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Battaramulla South, September typically receives around 245 mm (9.6 inches) of precipitation spread over approximately 27 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Battaramulla South

In Battaramulla South in September humidity is 82%. With an average temperature of 27°C (81°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel more exhausting, and leaving you longing for the relief of air-conditioned spaces during your travels.

September Average Humidity in Battaramulla South

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

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

September UV Index in Battaramulla South

In Battaramulla South in September, 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 Battaramulla South, you can check here.

Maximum UV Index Levels in Battaramulla South for September

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

Data source: Battaramulla South September 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 September Weather in Battaramulla South Compares to Other Months

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

This table compares monthly weather conditions in Battaramulla South, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	68 mm (2.7 inches)	77%	extreme
February Weather	28°C (83°F)	61 mm (2.4 inches)	73%	extreme
March Weather	29°C (84°F)	122 mm (4.8 inches)	74%	extreme
April Weather	28°C (83°F)	144 mm (5.7 inches)	74%	extreme
May Weather	28°C (83°F)	284 mm (11.2 inches)	76%	extreme
June Weather	28°C (82°F)	270 mm (10.6 inches)	82%	extreme
July Weather	27°C (82°F)	205 mm (8.1 inches)	82%	extreme
August Weather	27°C (81°F)	250 mm (9.8 inches)	83%	extreme
September Weather	27°C (81°F)	245 mm (9.6 inches)	82%	extreme
October Weather	27°C (80°F)	377 mm (14.9 inches)	81%	extreme
November Weather	27°C (80°F)	358 mm (14.1 inches)	80%	extreme
December Weather	27°C (80°F)	170 mm (6.7 inches)	80%	very high