Weather on September 20 in Colombo
Historical weather data for September 20 in Colombo, Sri Lanka
Based on 52 years of data from COLOMBO
About This Date
September 20th in Colombo, Sri Lanka typically brings pleasant fall weather, with average highs around 23°C and lows near 17°C. Over 52 years of records, the warmest September 20th was in 2025 (29°C average), while the coldest was 1986 (14°C) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 27% of September 20th dates historically, with the wettest September 20th recording 2.78" of rain. The last decade has been 21.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 21.5°F warmer on this date compared to 20-30 years ago.
Planning for September 20th in Colombo? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2026 | 28°C (83°F) | 26°C (78°F) | -- |
| 2025 | 32°C (90°F) | 27°C (81°F) | -- |
| 2023 | 30°C (86°F) | 24°C (75°F) | 71 mm |
| 2022 | -- | 24°C (76°F) | 0 mm |
| 2021 | 31°C (87°F) | -- | 0 mm |
| 2020 | 31°C (87°F) | -- | 0 mm |
| 2019 | 31°C (87°F) | 24°C (76°F) | 11 mm |
| 2018 | -- | 28°C (82°F) | 8 mm |
| 2016 | 31°C (88°F) | 27°C (81°F) | 0 mm |
| 2015 | 31°C (88°F) | 25°C (77°F) | 4 mm |
| 2014 | 31°C (87°F) | -- | 0 mm |
| 2013 | 31°C (87°F) | 26°C (79°F) | 7 mm |
| 2012 | 30°C (86°F) | 25°C (77°F) | 5 mm |
| 2011 | 31°C (87°F) | 27°C (80°F) | 0 mm |
| 2010 | 31°C (87°F) | -- | 1 mm |
| 2009 | 31°C (87°F) | -- | 4 mm |
| 2008 | 31°C (87°F) | -- | 0 mm |
| 2005 | 18°C (64°F) | -- | 0 mm |
| 2004 | 18°C (65°F) | 14°C (58°F) | 3 mm |
| 2003 | 19°C (67°F) | 14°C (58°F) | -- |
| 2002 | 21°C (69°F) | 12°C (54°F) | -- |
| 2001 | 17°C (62°F) | 14°C (57°F) | 1 mm |
| 2000 | 17°C (62°F) | 14°C (57°F) | -- |
| 1999 | 20°C (68°F) | 13°C (56°F) | -- |
| 1998 | 18°C (65°F) | 13°C (55°F) | -- |
| 1997 | 18°C (65°F) | 14°C (58°F) | -- |
| 1996 | 17°C (62°F) | 14°C (58°F) | -- |
| 1995 | 19°C (67°F) | -- | -- |
| 1994 | -- | 13°C (56°F) | -- |
| 1993 | 18°C (65°F) | 13°C (55°F) | 0 mm |
| 1992 | 19°C (67°F) | 11°C (52°F) | 9 mm |
| 1991 | 19°C (66°F) | 13°C (56°F) | 0 mm |
| 1990 | 19°C (66°F) | 13°C (56°F) | 0 mm |
| 1989 | -- | 13°C (56°F) | -- |
| 1988 | 18°C (65°F) | 13°C (56°F) | -- |
| 1987 | 17°C (63°F) | 14°C (57°F) | -- |
| 1986 | 17°C (62°F) | 13°C (55°F) | 2 mm |
| 1985 | 18°C (64°F) | 13°C (55°F) | 1 mm |
| 1984 | 19°C (67°F) | 13°C (55°F) | -- |
| 1983 | 18°C (64°F) | 13°C (55°F) | 6 mm |
| 1982 | 20°C (68°F) | 14°C (57°F) | -- |
| 1981 | 18°C (64°F) | 13°C (56°F) | -- |
| 1980 | 20°C (68°F) | 11°C (52°F) | -- |
| 1979 | -- | 23°C (73°F) | -- |
| 1978 | -- | 26°C (79°F) | -- |
| 1977 | 21°C (70°F) | 12°C (53°F) | -- |
| 1976 | 19°C (67°F) | 10°C (50°F) | -- |
| 1975 | 19°C (67°F) | 11°C (52°F) | -- |
| 1974 | 20°C (68°F) | 14°C (57°F) | -- |
| 1973 | 18°C (65°F) | 13°C (55°F) | -- |
| 1972 | 22°C (71°F) | 13°C (56°F) | -- |
| 1971 | 18°C (64°F) | 14°C (57°F) | -- |