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Sri Lanka weather

Weather in Jaffna for September 2025

Your guide to Jaffna weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Jaffna has been nearly identical to the historical average, with a temperature of 28.5 °C (showing only a slight deviation of -0.5 °C).

  • The forecast for the next days in Jaffna predicts temperatures to be around 29 °C, close to the historical average.

  • In general, the average temperature in Jaffna at the beginning of September is 29 °C. As the month progressed, temperatures tended to remain steady, reaching an average of 29 °C by the end of September.

    • Rain 🌧️

  • Jaffna experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 93.5 mm.

Average dry days
6
Dry days
Average rainy days
24
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/27°
Temperatures
Average wind speed
37 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Jaffna Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
29°
2
Light rain shower
29°
3
Light rain shower
29°
4
Light rain shower
29°
5
Partly cloudy
29°
6
Partly cloudy
29°
7
Thundery outbreaks possible
29°
8
Light rain shower
29°
9
Thundery outbreaks possible
29°
10
Patchy rain possible
29°
11
Light rain shower
29°
12
Overcast
29°
13
Partly cloudy
29°
14
Thundery outbreaks possible
29°
15
Cloudy
29°
16
Patchy rain possible
29°
17
Patchy rain possible
29°
18
Patchy rain possible
29°
19
Moderate rain
28°
20
Moderate rain
28°
21
Patchy rain possible
29°
22
Partly cloudy
29°
23
Patchy rain possible
29°
24
Patchy rain possible
29°
25
Patchy rain possible
29°
26
Patchy rain possible
29°
27
Patchy rain possible
29°
28
Patchy rain possible
29°
29
Patchy rain possible
29°
30
Thundery outbreaks possible
29°

Temperatures trend during September in Jaffna

See the weather trend as well as the moving average line

September weather in Jaffna day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 3.1 mm 6
2 Sept. Light rain shower
Light rain shower
 29° /27° 1.5 mm 6
3 Sept. Light rain shower
Light rain shower
 29° /27° 1.3 mm 6
4 Sept. Light rain shower
Light rain shower
 29° /27° 1.8 mm 6
5 Sept. Partly cloudy
Partly cloudy
 29° /27° 3.7 mm 7
6 Sept. Partly cloudy
Partly cloudy
 29° /27° 2.1 mm 7
7 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 29° /27° 3.1 mm 6
8 Sept. Light rain shower
Light rain shower
 29° /26° 6.2 mm 6
9 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 29° /26° 1.8 mm 6
10 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 2 mm 6
11 Sept. Light rain shower
Light rain shower
 29° /27° 2.4 mm 6
12 Sept. Overcast
Overcast
 29° /27° 2.5 mm 6
13 Sept. Partly cloudy
Partly cloudy
 29° /27° 1.7 mm 7
14 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 29° /27° 1.4 mm 6
15 Sept. Cloudy
Cloudy
 29° /27° 1 mm 6
16 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 1.3 mm 6
17 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 1.4 mm 3
18 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 3.7 mm 2.6
19 Sept. Moderate rain
Moderate rain
 28° /26° 14.2 mm 1.6
20 Sept. Moderate rain
Moderate rain
 28° /27° 13.1 mm 3.4
21 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 0.6 mm 6
22 Sept. Partly cloudy
Partly cloudy
 29° /28° 0 mm 7
23 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 0.2 mm 6
24 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 0.5 mm 6
25 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 0.3 mm 6
26 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 0.3 mm 6
27 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 1.6 mm 6
28 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 0.5 mm 6
29 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 0.2 mm 6
30 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 29° /27° 0.7 mm 6
Next
Important Notice
Our weather forecast for Jaffna in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Jaffna forecast closer to your planned date for the most up-to-date weather information.
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Jaffna in September - FAQ

What are the expected maximum and minimum temperatures in Jaffna during September?
During September, expect a variety of temperatures with highs around 29° and lows near 27°, suitable for diverse activities and preferences.
How much rainfall should be expected in Jaffna during September?
Moderate rainfall is anticipated in Jaffna during September, with a total of 93.5 mm spread over approximately 24 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Jaffna during September?
The average wind speed in Jaffna during September is 37 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Jaffna

Explore the daily rainfall trends and prepare for Jaffnas September weather 💧

UV exposure in Jaffna during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Jaffna, located at latitude 9.668 and longitude 80.007. Stay updated with localized weather information tailored for Jaffna.

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