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 »
  In Colombo during September, the rain falls for 26.9 days and regularly aggregates up to 206mm (8.11") of precipitation. January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Colombo.
• Kandy - September »
  In Kandy, during September, the rain falls for 23.4 days and regularly aggregates up to 118mm (4.65") of precipitation. In Kandy, during September, the rain falls for 23.4 days and regularly aggregates up to 118mm (4.65") of precipitation.
• Galle - September »
  In Galle during September, the rain falls for 24.5 days and regularly aggregates up to 222mm (8.74") of precipitation. June and September, with an average relative humidity of 82%, are most humid months in Galle, Sri Lanka.
• Jaffna - September »
  The months with the highest humidity in Jaffna are May, August and September, with an average relative humidity of 79%. Jaffna ushers in September with an average high temperature of a still warm 28.8°C (83.8°F), mirroring closely the previous month.
• Anuradhapura - September »
  In Anuradhapura in September, during 14 rainfall days, 57mm (2.24") of precipitation is typically accumulated. July through September, with an average relative humidity of 71%, are the least humid months in Anuradhapura.
• Nuwara Eliya - September »
  In Nuwara Eliya in September, during 25.5 rainfall days, 182mm (7.17") of precipitation is typically accumulated. In Nuwara Eliya during September, the rain falls for 25.5 days and regularly aggregates up to 182mm (7.17") of precipitation.
• Ratnapura - September »
  In Ratnapura, in September, during 25.8 rainfall days, 178mm (7.01") of precipitation is typically accumulated. On the last day of September, in Ratnapura, sunrise is at 05:56 and sunset at 18:00 +0530.
• Trincomalee - September »
  In Trincomalee, during September, the rain falls for 13.5 days and regularly aggregates up to 53mm (2.09") of precipitation. June through September, with an average relative humidity of 67%, are the least humid months in Trincomalee.
• Batticaloa - September »
  On the last day of September, in Batticaloa sunrise is at 05:51 and sunset at 17:55 +0530. On the first day of September in Batticaloa sunrise is at 05:55 and sunset at 18:11.
• Matara - September »
  May, September and November, with an average relative humidity of 81%, are the most humid months in Matara. In Matara, in September, the average water temperature is 28.3°C (82.9°F).
• 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. On the first day of September in Negombo sunrise is at 06:03 and sunset at 18:18.
• Badulla - September »
  On the last day of September, in Badulla sunrise is at 05:53 and sunset at 17:58 +0530. In Badulla, during September, the rain falls for 25.5 days and regularly aggregates up to 182mm (7.17") of precipitation.