Kalutara Weather in September
Average highs run from 28°C on September 1 to 28°C on September 30, and lows from 25°C to 25°C. Normal precipitation for the month is 162 mm over about 24 wet days.
September day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 28°C
- Average low
- 25°C
- Precipitation
- 162 mm
- Record high
- 32°CSep 7, 2026
- Record low
- 18°CSep 26, 1958
- Daylight
- 12 h 14 min to 12 h 04 min
- Cloud cover
- 80%
- Humidity
- 85%
- Dew point
- 24°C
- Wind
- 19.4 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 28°C | 25°C | 32°C 2015 | 23°C 2022 | 72% |
| Sep 2 | 28°C | 25°C | 32°C 2024 | 23°C 1979 | 72% |
| Sep 3 | 28°C | 25°C | 32°C 2024 | 24°C 2014 | 72% |
| Sep 4 | 28°C | 25°C | 31°C 2026 | 23°C 2014 | 72% |
| Sep 5 | 28°C | 25°C | 32°C 2026 | 24°C 2012 | 72% |
| Sep 6 | 28°C | 25°C | 32°C 2024 | 24°C 2013 | 72% |
| Sep 7 | 28°C | 25°C | 32°C 2026 | 23°C 1979 | 72% |
| Sep 8 | 28°C | 25°C | 32°C 2026 | 24°C 2015 | 72% |
| Sep 9 | 28°C | 25°C | 32°C 2024 | 24°C 2014 | 72% |
| Sep 10 | 28°C | 25°C | 31°C 2026 | 24°C 2024 | 72% |
| Sep 11 | 28°C | 25°C | 32°C 1994 | 23°C 2015 | 73% |
| Sep 12 | 28°C | 25°C | 32°C 2018 | 24°C 2019 | 74% |
| Sep 13 | 28°C | 25°C | 32°C 2024 | 24°C 2013 | 75% |
| Sep 14 | 28°C | 25°C | 32°C 2024 | 23°C 1958 | 75% |
| Sep 15 | 28°C | 25°C | 32°C 2015 | 22°C 1979 | 75% |
| Sep 16 | 28°C | 25°C | 32°C 1980 | 23°C 2019 | 76% |
| Sep 17 | 28°C | 25°C | 32°C 2023 | 24°C 2019 | 77% |
| Sep 18 | 28°C | 25°C | 32°C 2015 | 24°C 1980 | 78% |
| Sep 19 | 28°C | 25°C | 32°C 1980 | 24°C 2009 | 78% |
| Sep 20 | 28°C | 25°C | 32°C 2025 | 23°C 1979 | 78% |
| Sep 21 | 28°C | 25°C | 32°C 2012 | 22°C 1957 | 79% |
| Sep 22 | 28°C | 25°C | 31°C 2018 | 24°C 2010 | 79% |
| Sep 23 | 28°C | 25°C | 32°C 2025 | 24°C 1958 | 78% |
| Sep 24 | 28°C | 25°C | 32°C 2023 | 23°C 1957 | 79% |
| Sep 25 | 28°C | 25°C | 31°C 1957 | 22°C 1957 | 78% |
| Sep 26 | 28°C | 25°C | 31°C 2016 | 18°C 1958 | 78% |
| Sep 27 | 28°C | 25°C | 31°C 2016 | 23°C 1957 | 78% |
| Sep 28 | 28°C | 25°C | 31°C 2016 | 22°C 1957 | 78% |
| Sep 29 | 28°C | 25°C | 31°C 2014 | 22°C 2019 | 77% |
| Sep 30 | 28°C | 25°C | 32°C 2011 | 23°C 2015 | 78% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+5:30).
- September 1
- sunrise 6:03 AM, sunset 6:17 PM
- September 30
- sunrise 5:58 AM, sunset 6:02 PM
Other months
Sources
Records: NOAA GHCN-Daily, station CEM00043466, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.