Sri Lanka in September: where is it warmest?
In September, Sigiriya is the warmest place with 31 °C by day, Kandy the coolest with 27 °C. 4 of 8 destinations have good holiday weather.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
Sri Lanka in September: quick answers
Sri Lanka in September: where is it warmest?
The warmest places in September are Sigiriya (31 °C), Jaffna (30 °C) and Negombo (29 °C).
Sri Lanka in September: where is the sea warmest?
The sea is warmest at Jaffna (29 °C), Negombo (28 °C) and Sri Jayawardenepura Kotte (28 °C).
Sri Lanka in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Galle, Negombo and Sri Jayawardenepura Kotte.
Sri Lanka month by month
Sri Lanka: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences