Weather on September 18 in Colombo
Historical weather data for September 18 in Colombo, Sri Lanka
Based on 52 years of data from COLOMBO
About This Date
September 18th in Colombo, Sri Lanka typically brings pleasant fall weather, with average highs around 23°C and lows near 16°C. Over 52 years of records, the warmest September 18th was in 2014 (29°C average), while the coldest was 1981 (15°C) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 29% of September 18th dates historically, with the wettest September 18th recording 4.9" of rain. The last decade has been 19.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 19.7°F warmer on this date compared to 20-30 years ago.
Planning for September 18th in Colombo? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 29°C (85°F) | 25°C (77°F) | -- |
| 2023 | 28°C (83°F) | 24°C (75°F) | 4.9" |
| 2021 | 31°C (87°F) | -- | 0.03" |
| 2020 | 31°C (87°F) | -- | 0.89" |
| 2019 | 31°C (88°F) | 26°C (78°F) | 0.46" |
| 2018 | 30°C (86°F) | -- | -- |
| 2017 | 31°C (87°F) | 26°C (79°F) | 0.18" |
| 2016 | 31°C (87°F) | 27°C (80°F) | 0" |
| 2015 | 32°C (89°F) | 27°C (80°F) | 0.94" |
| 2014 | 31°C (88°F) | 27°C (80°F) | 0.03" |
| 2013 | 28°C (82°F) | 25°C (77°F) | 0.94" |
| 2012 | 31°C (88°F) | -- | 0.13" |
| 2011 | 31°C (87°F) | 26°C (79°F) | 0" |
| 2010 | 29°C (85°F) | -- | 0" |
| 2009 | 28°C (82°F) | -- | 0.84" |
| 2008 | 31°C (87°F) | -- | 0" |
| 2007 | 17°C (62°F) | -- | 2.06" |
| 2005 | 19°C (67°F) | -- | 0" |
| 2004 | 19°C (67°F) | 14°C (58°F) | -- |
| 2003 | 19°C (67°F) | 14°C (58°F) | -- |
| 2002 | 21°C (70°F) | 13°C (56°F) | -- |
| 2001 | 22°C (71°F) | 12°C (53°F) | 0.1" |
| 2000 | 17°C (63°F) | 14°C (57°F) | -- |
| 1999 | 19°C (67°F) | 13°C (56°F) | -- |
| 1998 | 20°C (68°F) | 14°C (58°F) | -- |
| 1997 | 21°C (69°F) | 13°C (56°F) | -- |
| 1996 | 19°C (66°F) | 14°C (58°F) | 0.2" |
| 1995 | -- | 13°C (56°F) | -- |
| 1994 | -- | 13°C (55°F) | -- |
| 1993 | 22°C (71°F) | 13°C (56°F) | -- |
| 1992 | 21°C (69°F) | 11°C (52°F) | -- |
| 1991 | 18°C (65°F) | 14°C (58°F) | -- |
| 1990 | -- | 14°C (57°F) | -- |
| 1989 | -- | 13°C (56°F) | -- |
| 1988 | 17°C (63°F) | 14°C (57°F) | -- |
| 1987 | 22°C (71°F) | 13°C (55°F) | 1.91" |
| 1986 | 18°C (65°F) | 13°C (56°F) | 0.71" |
| 1985 | 22°C (71°F) | 9°C (48°F) | 0" |
| 1984 | 22°C (71°F) | 8°C (47°F) | -- |
| 1983 | 19°C (67°F) | 13°C (55°F) | -- |
| 1982 | 23°C (73°F) | 13°C (55°F) | -- |
| 1981 | 17°C (62°F) | 13°C (56°F) | -- |
| 1980 | -- | 24°C (75°F) | -- |
| 1979 | 19°C (66°F) | 14°C (57°F) | -- |
| 1978 | 31°C (88°F) | 26°C (79°F) | -- |
| 1977 | 20°C (68°F) | 12°C (54°F) | -- |
| 1976 | 18°C (65°F) | 13°C (56°F) | -- |
| 1975 | 19°C (67°F) | 13°C (56°F) | -- |
| 1974 | 18°C (64°F) | 13°C (56°F) | -- |
| 1973 | 18°C (65°F) | 13°C (56°F) | -- |
| 1972 | 20°C (68°F) | 12°C (53°F) | -- |
| 1971 | 22°C (72°F) | 12°C (53°F) | -- |