September weather forecast
Sri Lanka

September in Sri Lanka is predominantly marked by dry and warm conditions, serving as a brief respite between the two main monsoon seasons. Temperatures during this month generally lie between 20°C (68°F) to 26°C (78.8°F). Meanwhile, the cooler regions of the central highlands, such as Nuwara Eliya, record temperatures from 10.5°C (50.9°F) to 22°C (71.6°F).

The majority of the island, including the southwest regions, which were previously under the influence of the southwest monsoon, now relish in the drier atmosphere. The decrease in humidity levels and clearer skies make September an appealing month for various outdoor pursuits.

The eastern coast, encompassing locales like Batticaloa, sustains its warm and dry pattern. Beaches in this region, basking in ample sunshine, attract those looking to indulge in marine activities or simply sunbathe.

However, as September advances towards its conclusion, there's a palpable shift in the atmosphere. The northeastern parts of the country start experiencing subtle changes, hinting at the forthcoming northeast monsoon. By the time October arrives, Sri Lanka begins its preparatory phase for the next major rainy season, which predominantly affects the northern and eastern parts of the island.

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• Colombo - September »
  The months with the highest UV index in Colombo are January through April, July, September, November and December, with an average maximum UV index of 7. On the last day of September, in Colombo, sunrise is at 05:58 and sunset at 18:02 +0530.
• Kandy - September »
  On the last day of September, in Kandy sunrise is at 05:55 and sunset at 17:59 +0530. In Kandy during September, the rain falls for 23.4 days and regularly aggregates up to 118mm (4.65") of precipitation.
• Galle - September »
  June and September, with an average relative humidity of 82%, are most humid months in Galle. The months with the highest humidity in Galle are June and September, with an average relative humidity of 82%.
• Jaffna - September »
  In Jaffna during September, the rain falls for 15.5 days and regularly aggregates up to 58mm (2.28") of precipitation. In Jaffna in September, the average water temperature is 29°C (84.2°F).
• Anuradhapura - September »
  July through September, with an average relative humidity of 71%, are the least humid months in Anuradhapura. The months with the lowest humidity in Anuradhapura are July through September, with an average relative humidity of 71%.
• Nuwara Eliya - September »
  In Nuwara Eliya, in September, it is raining for 25.5 days, with typically 182mm (7.17") of accumulated precipitation. September arrives in Nuwara Eliya with a slightly hotter climate and a fair increase in the rainy days compared to August.
• Ratnapura - September »
  On the first day of September in Ratnapura, Sri Lanka, sunrise is at 06:01 and sunset at 18:15. In Ratnapura during September, the rain falls for 25.8 days and regularly aggregates up to 178mm (7.01") of precipitation.
• Trincomalee - September »
  The months with the lowest humidity in Trincomalee are June through September, with an average relative humidity of 67%. In Trincomalee during September, the rain falls for 13.5 days and regularly aggregates up to 53mm (2.09") of precipitation.
• Batticaloa - September »
  September in Batticaloa welcomes an increase in rainfall to 81mm (3.19") from the preceding month's volume. In Batticaloa, in September, during 22 rainfall days, 81mm (3.19") of precipitation is typically accumulated.
• Matara - September »
  The months with the highest humidity in Matara are May, September and November, with an average relative humidity of 81%. The months with the highest humidity in Matara are May, September and November, with an average relative humidity of 81%.
• Negombo - September »
  January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Negombo, Sri Lanka. In Negombo, Sri Lanka, in September, it is raining for 24.4 days, with typically 153mm (6.02") of accumulated precipitation.
• Badulla - September »
  In Badulla, during September, the rain falls for 25.5 days and regularly aggregates up to 182mm (7.17") of precipitation. In Badulla, during September, the rain falls for 25.5 days and regularly aggregates up to 182mm (7.17") of precipitation.