Normal weather for Sri Lanka in September
It's warm in September in Sri Lanka with an average temperature of 29°C. Temperatures this month range from a low of 29°C to a high of 30°C. At night, you can expect temperatures between 20°C and 22°C.
In September, there is an average of 294 mm of precipitation, spread over 25 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Sri Lanka in September |
UK | ||
|---|---|---|---|
 Average Temperature |
29°C | 20°C | |
 High Temp |
30°C | 22°C | |
| Low Temp |
29°C | 17°C | |
 Total Precipitation |
294 mm | 44 mm | |
| Rainy Days |
25 days | 8 days | |
Start of September
The month of September starts in Sri Lanka with hot temperatures, averaging around 30°C during the day and nights close to 21°C. Plenty of days with a chance of precipitation.
Since temperatures can differ between day and night, it’s a good idea to dress in layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. In the evening and morning, a T-shirt, light trousers or skirt, and a light jacket are recommended.
Mid-September
By mid-September, the average daytime temperature stays the same at 30°C, with nights close to 22°C. The chance of precipitation is high during this period.
Temperatures vary between day and night, so it’s smart to wear layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. In the evening and morning, a T-shirt, light trousers or skirt, and a light jacket are recommended.
End of September
By the end of September, the average daytime temperature in Sri Lanka will be around 30°C, with nights close to 21°C. There’s a significant chance of many days with precipitation.
As it gets cooler in the evening, it’s best to wear layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. In the evening and morning, a T-shirt, light trousers or skirt, and a light jacket are recommended.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Sri Lanka?
After some sun? Then September isn’t the best time to be in Sri Lanka. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Sri Lanka in September
With 33°C, Sri Lanka hit the highest temperature in the last 10 years in September 2018. The lowest daytime temperature in this month was 24°C in 2021. The extreme night temperatures ranged from a low of 18°C to a high of 25°C.
Check out the climate of Sri Lanka for all months and discover the best travel time
The climate of Sri Lanka is based on weather data from Kandy. Other locations might have different weather. You can check out all destinations in Sri Lanka for a full picture of the climate.
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Daily Temperature in September in Sri Lanka
This chart shows the average daily temperatures, both day and night, for each day in September in Sri Lanka, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Weather experiences in September in Sri Lanka
Good
September in Sri Lanka was pleasant. The days were sunny and... more
Daily Precipitation in September in Sri Lanka
The chart below shows the average daily precipitation in September for Sri Lanka, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 25 days of rain in Sri Lanka.
Daily UV Index in September in Sri Lanka
This chart shows the average daily UV index in September in Sri Lanka, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Sri Lanka Over the Years
This chart shows the average temperature in September in Sri Lanka, measured in degrees Celsius, over the past years.
Total Precipitation in September in Sri Lanka Over the Years
This chart shows the average precipitation in September in Sri Lanka, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Sri Lanka
Click on a specific day in September for detailed info on the typical weather on that day in Sri Lanka. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Sri Lanka
The weather in September in Sri Lanka is rated 4 out of 5 stars by 1 visitor. Have you been to Sri Lanka? Share your weather experience to help other visitors.
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September in Sri Lanka was pleasant. The days were sunny and warm, ideal for active recreation. There were times when it rained, mostly in the evening, but that only added to the tropical experience. Nice place!— This text is automatically translated to English
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Average Weather in Sri Lanka by Month
Click on a month below to see detailed weather info for Sri Lanka. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Sri Lanka for all months at once
