Sri LankaAverage weather for Jaffna in September
It's hot in September in Jaffna with an average temperature of 32°C. Temperatures this month range from a low of 31°C to a high of 33°C. At night, you can expect temperatures between 26°C and 28°C.
Start of September
The month of September starts in Jaffna with hot temps, averaging around 32°C during the day and nights around 28°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid September
By mid-September, daytime temps stay steady at around 32°C, with nights around 28°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of September
By the end of September, the average daytime temperature in Jaffna is around 32°C, while nighttime temps are about 28°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In September, there is an average of 125 mm of precipitation, spread over 13 days. The wind speed is around 5 Bft, mostly coming from the Southwest.
Jaffna in September |
New York | ||
|---|---|---|---|
 Average temperature |
32°C | 27°C | |
 Max. temperature |
33°C | 31°C | |
| Min. temperature |
31°C | -5°C | |
 Total precipitation |
125 mm | 57 mm | |
| Rainy days |
13 days | 9 days | |
August
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 Jaffna?
Looking for sun? September isn’t a good month to be in Jaffna. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 35°C in 2021, Jaffna reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 28°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 22°C to a highest value of 29°C.
Check out the climate of Jaffna for all months and discover the best travel time
Daily Temperature in September in Jaffna
This chart shows the average daily high and low temperatures in September for Jaffna, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Jaffna
The chart below shows the average daily precipitation in September for Jaffna, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed 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 it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 13 days of precipitation in Jaffna.
Daily UV index in September in Jaffna
This chart shows the average daily UV index in September in Jaffna, 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 Jaffna over the years
This chart shows the average temperature in September in Jaffna, measured in degrees Celsius, over the past few years.
Total precipitation in September in Jaffna over the years
This chart shows the average precipitation in September in Jaffna, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Jaffna
Click on any day in September to get detailed info about the usual weather on that day in Jaffna. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Jaffna
Have you been to Jaffna in September?
Share your weather experience in September in Jaffna.
Average weather in Jaffna by month
Click on a month below to see detailed weather info for Jaffna. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
