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May Weather in Kalmunai, Sri Lanka

Last updated: August 31, 2025

In May, the average temperature in Kalmunai, Sri Lanka reaches a warm 29°C (84°F). Temperatures can vary, with a minimum of 25°C (78°F) and a maximum of 34°C (93°F). Expect about 69 mm (2.7 in) of precipitation over 16 days, and feel the tropical air with an average humidity of 79%.

May Temperature in Kalmunai

In May in Kalmunai, the average temperature is 29°C (84°F), with maximums reaching 34°C (93°F) and minimums dropping to 25°C (78°F). This warm climate makes it an ideal destination for travelers seeking pleasant weather and outdoor activities.

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

The chart illustrates May temperature patterns in Kalmunai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kalmunai, May typically has an average temperature of 29°C (84°F), with highs reaching up to 34°C (93°F) and lows dropping to around 25°C (78°F).
JanFebMarAprMayJunJulAugSepOctNovDec787981838485848483818079
Data source: Temperature data for Kalmunai generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Kalmunai

In Kalmunai in May, the precipitation amount is 69 mm (2.7 in), occurring over a duration of 16 days.

May Precipitation Trends in Kalmunai

The chart displays monthly precipitation patterns in Kalmunai, 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 Kalmunai, May typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec1399478566929445091184317253
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Kalmunai

In Kalmunai in May, humidity is 79%. With an average temperature of 29°C (84°F), this humidity feels like a steamy blanket enveloping you, making every step feel heavier and more labored, which can be quite challenging for traveling.

May Average Humidity in Kalmunai

This chart illustrates the average monthly humidity levels in Kalmunai, 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 Kalmunai is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%72%69%69%79%85%81%85%81%89%88%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Kalmunai

In Kalmunai 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 Kalmunai, you can check here.

Maximum UV Index Levels in Kalmunai for May

The chart shows the monthly maximum UV Index (UVI) for Kalmunai 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 Kalmunai typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121315151413121414131211
Data source: Kalmunai 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 Kalmunai Compares to Other Months

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

This table compares monthly weather conditions in Kalmunai, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (78°F)139 mm (5.5 inches)80%extreme
February Weather26°C (79°F)93 mm (3.7 inches)72%extreme
March Weather27°C (81°F)78 mm (3.1 inches)69%extreme
April Weather28°C (83°F)56 mm (2.2 inches)69%extreme
May Weather29°C (84°F)69 mm (2.7 inches)79%extreme
June Weather29°C (85°F)29 mm (1.1 inches)85%extreme
July Weather29°C (85°F)44 mm (1.7 inches)81%extreme
August Weather29°C (84°F)50 mm (2.0 inches)85%extreme
September Weather28°C (83°F)91 mm (3.6 inches)81%extreme
October Weather27°C (82°F)184 mm (7.3 inches)89%extreme
November Weather26°C (80°F)317 mm (12.5 inches)88%extreme
December Weather26°C (79°F)253 mm (9.9 inches)86%extreme

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