Weather on August 11 in Ottawa
Historical weather data for August 11 in Ottawa, Canada
Based on 54 years of data from OTTAWA CDA
About This Date
August 11th in Ottawa, Canada typically brings pleasant summer weather, with average highs around 26°C and lows near 15°C. Over 54 years of records, the warmest August 11th was in 2016 (28°C average), while the coldest was 1972 (14°C) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 33% of August 11th dates historically, with the wettest August 11th recording 3.17" of rain. The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
Planning for August 11th in Ottawa? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 35°C (95°F) | 19°C (66°F) | 0 mm |
| 2023 | 23°C (73°F) | 13°C (56°F) | 0 mm |
| 2022 | 25°C (77°F) | 16°C (61°F) | 0 mm |
| 2021 | 32°C (89°F) | 23°C (73°F) | 0 mm |
| 2020 | 32°C (89°F) | 18°C (65°F) | 20 mm |
| 2019 | 28°C (82°F) | 12°C (53°F) | 0 mm |
| 2018 | 27°C (81°F) | 13°C (56°F) | 0 mm |
| 2017 | 27°C (81°F) | 15°C (59°F) | 9 mm |
| 2016 | 33°C (92°F) | 22°C (71°F) | 0 mm |
| 2015 | 24°C (76°F) | 18°C (64°F) | 81 mm |
| 2014 | 29°C (85°F) | 13°C (56°F) | 0 mm |
| 2013 | 26°C (78°F) | 12°C (53°F) | 0 mm |
| 2012 | 26°C (78°F) | 17°C (63°F) | 3 mm |
| 2011 | 21°C (70°F) | 15°C (59°F) | 0 mm |
| 2010 | 28°C (83°F) | 17°C (62°F) | 0 mm |
| 2009 | 27°C (81°F) | 17°C (63°F) | 27 mm |
| 2008 | 24°C (75°F) | 14°C (57°F) | 21 mm |
| 2007 | 29°C (84°F) | 13°C (55°F) | 0 mm |
| 2006 | 21°C (70°F) | 11°C (52°F) | 0 mm |
| 2005 | 28°C (83°F) | 18°C (64°F) | 0 mm |
| 2004 | 25°C (77°F) | 17°C (62°F) | 1 mm |
| 2003 | 28°C (82°F) | 20°C (68°F) | 2 mm |
| 2002 | 33°C (91°F) | 14°C (58°F) | 0 mm |
| 2001 | 27°C (81°F) | 13°C (56°F) | 0 mm |
| 2000 | 22°C (71°F) | 15°C (59°F) | 11 mm |
| 1999 | 23°C (73°F) | 14°C (57°F) | 0 mm |
| 1998 | 26°C (79°F) | 19°C (67°F) | 0 mm |
| 1997 | 21°C (70°F) | 19°C (66°F) | 1 mm |
| 1996 | 22°C (71°F) | 8°C (46°F) | 0 mm |
| 1995 | 28°C (82°F) | 17°C (62°F) | 4 mm |
| 1994 | 23°C (74°F) | 11°C (52°F) | 0 mm |
| 1993 | 27°C (81°F) | 19°C (67°F) | 7 mm |
| 1992 | 21°C (69°F) | 17°C (62°F) | 0 mm |
| 1991 | 26°C (78°F) | 17°C (62°F) | 0 mm |
| 1990 | 27°C (81°F) | 16°C (60°F) | 1 mm |
| 1989 | 29°C (84°F) | 14°C (57°F) | 0 mm |
| 1988 | 28°C (82°F) | 17°C (62°F) | 0 mm |
| 1987 | 23°C (74°F) | 11°C (51°F) | 0 mm |
| 1986 | 21°C (70°F) | 17°C (62°F) | 0 mm |
| 1985 | 28°C (82°F) | 17°C (62°F) | 0 mm |
| 1984 | 27°C (80°F) | 17°C (62°F) | 56 mm |
| 1983 | 23°C (73°F) | 11°C (51°F) | 0 mm |
| 1982 | 20°C (68°F) | 12°C (54°F) | 0 mm |
| 1981 | 24°C (75°F) | 16°C (60°F) | 11 mm |
| 1980 | 26°C (79°F) | 12°C (53°F) | 13 mm |
| 1979 | 19°C (67°F) | 13°C (55°F) | 0 mm |
| 1978 | 27°C (81°F) | 11°C (52°F) | 0 mm |
| 1977 | 24°C (75°F) | 14°C (58°F) | 4 mm |
| 1976 | 29°C (84°F) | 15°C (59°F) | 0 mm |
| 1975 | 28°C (82°F) | 17°C (63°F) | 0 mm |
| 1974 | 27°C (80°F) | 12°C (54°F) | 0 mm |
| 1973 | 29°C (85°F) | 20°C (68°F) | 0 mm |
| 1972 | 22°C (72°F) | 7°C (45°F) | 0 mm |
| 1971 | 26°C (78°F) | 19°C (67°F) | 5 mm |