July is one of the warmer months of the year in Bowmanville, with average highs near 26.8°C and lows around 16.4°C (mean 21.6°C). It is about average for rainfall, averaging 62 mm of rainfall and 66% relative humidity across the period.
July is one of the warmer months of the year in Bowmanville. Across 45 years of records, the warmest July in Bowmanville was 2020 — when the month averaged 25.1°C — while the coldest was 1992 at 18.1°C. Typical July days reach 26.8°C with nights near 16.4°C. The long-term trend is warming, about 0.5°C per decade.
July is about average for rainfall in Bowmanville, averaging 62 mm of rainfall. The wettest July on record was 2004 with 145 mm, while the driest was 1989 at 23 mm.
Relative humidity in Bowmanville during July averages 66%. The most humid July was 2004 at 80%, and the least humid was 1988 at 59%.
July receives about 5.8 kWh/m²/day of solar energy in Bowmanville. The sunniest July was 2018 at 6.6 kWh/m²/day, and the cloudiest was 1984 at 4.4.
Average wind speed in Bowmanville during July is 2.8 m/s. The windiest July was 1983 at 3.2 m/s, while the calmest were 1989 and 2024 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.7°C | 20.7°C | 20.7°C | 22.5°C | 23.0°C | +1.3°C |
| Avg High | 27.2°C | 25.9°C | 25.6°C | 27.7°C | 28.2°C | +1°C |
| Avg Low | 16.2°C | 15.4°C | 15.8°C | 17.4°C | 17.8°C | +1.6°C |
| Avg Rain | 50 mm | 63 mm | 81 mm | 54 mm | 61 mm | +11 mm |
July temperatures in Bowmanville have risen by about 1.5°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 8.1°C (2001) to a record high of 36.5°C (1988).
Rainfall in July is about average for rainfall, averaging 62 mm, with a wettest year of 145 mm.
One of the best times to visit Bowmanville
July is one of the best times to visit Bowmanville. Expect days averaging 26.8°C and nights around 16.4°C (mean 21.6°C) — warmer than Bowmanville's yearly average — with moderate rainfall (62 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 29.7°C | 24.1°C | 18.6°C | 33.7°C | 12.9°C | 30 mm | 61% | 2.7 m/s | 6.2 |
| 2024 | 27.8°C | 22.7°C | 17.5°C | 31.2°C | 11.3°C | 100 mm | 67% | 2.4 m/s | 5.8 |
| 2023 | 27.6°C | 22.5°C | 17.5°C | 32.0°C | 14.7°C | 78 mm | 66% | 2.5 m/s | 5.6 |
| 2022 | 27.4°C | 22.1°C | 16.8°C | 32.6°C | 12.7°C | 49 mm | 61% | 2.9 m/s | 6.1 |
| 2021 | 26.4°C | 21.5°C | 16.6°C | 31.5°C | 11.9°C | 72 mm | 69% | 2.7 m/s | 5 |
| 2020 🔥 | 30.3°C | 25.1°C | 20.0°C | 34.3°C | 16.3°C | 38 mm | 63% | 2.8 m/s | 6.4 |
| 2019 | 28.5°C | 23.4°C | 18.2°C | 33.4°C | 14.9°C | 60 mm | 68% | 2.5 m/s | 6 |
| 2018 | 28.3°C | 23.2°C | 18.2°C | 31.9°C | 13.4°C | 37 mm | 63% | 2.8 m/s | 6.6 |
| 2017 | 26.0°C | 21.2°C | 16.3°C | 30.5°C | 13.0°C | 64 mm | 71% | 2.6 m/s | 5.5 |
| 2016 | 28.4°C | 23.2°C | 18.0°C | 33.8°C | 12.5°C | 38 mm | 61% | 3 m/s | 6.1 |
| 2015 | 26.9°C | 21.3°C | 15.7°C | 32.9°C | 10.1°C | 33 mm | 64% | 2.6 m/s | 6.3 |
| 2014 | 24.6°C | 19.8°C | 14.9°C | 28.8°C | 10.8°C | 97 mm | 68% | 3.1 m/s | 5.7 |
| 2013 | 27.0°C | 22.3°C | 17.6°C | 33.6°C | 11.8°C | 56 mm | 69% | 2.6 m/s | 5.7 |
| 2012 | 29.2°C | 23.8°C | 18.5°C | 35.3°C | 15.5°C | 56 mm | 61% | 2.6 m/s | 6.2 |
| 2011 | 29.6°C | 24.0°C | 18.3°C | 35.5°C | 11.5°C | 46 mm | 61% | 2.8 m/s | 6.4 |
| 2010 | 28.4°C | 23.1°C | 17.8°C | 33.5°C | 10.4°C | 56 mm | 65% | 2.8 m/s | 6.2 |
| 2009 | 23.2°C | 18.7°C | 14.2°C | 26.2°C | 10.3°C | 80 mm | 73% | 2.8 m/s | 5.3 |
| 2008 | 25.7°C | 21.0°C | 16.3°C | 29.5°C | 11.9°C | 109 mm | 72% | 2.8 m/s | 5.7 |
| 2007 | 25.5°C | 20.5°C | 15.4°C | 32.3°C | 10.2°C | 76 mm | 65% | 2.5 m/s | 5.7 |
| 2006 | 27.6°C | 22.8°C | 17.9°C | 33.6°C | 12.4°C | 114 mm | 70% | 2.9 m/s | 5.7 |
| 2005 | 29.5°C | 23.9°C | 18.3°C | 34.5°C | 12.4°C | 44 mm | 61% | 2.8 m/s | 5.9 |
| 2004 🌧️ | 23.7°C | 19.6°C | 15.5°C | 27.1°C | 10.9°C | 145 mm | 80% | 2.6 m/s | 4.8 |
| 2003 | 25.4°C | 20.2°C | 15.0°C | 30.6°C | 11.8°C | 65 mm | 68% | 2.8 m/s | 5.5 |
| 2002 | 27.2°C | 21.8°C | 16.5°C | 31.9°C | 11.1°C | 71 mm | 68% | 2.7 m/s | 6.2 |
| 2001 | 24.3°C | 19.2°C | 14.1°C | 31.2°C | 8.1°C | 58 mm | 67% | 3 m/s | 6 |
| 2000 | 23.5°C | 19.2°C | 14.8°C | 27.1°C | 10.7°C | 52 mm | 75% | 2.6 m/s | 5.6 |
| 1999 | 28.3°C | 22.7°C | 17.1°C | 33.0°C | 11.3°C | 60 mm | 63% | 3.1 m/s | 6.1 |
| 1998 | 26.1°C | 21.2°C | 16.3°C | 31.2°C | 12.7°C | 58 mm | 66% | 2.9 m/s | 5.9 |
| 1997 | 26.1°C | 20.6°C | 15.2°C | 30.8°C | 10.3°C | 36 mm | 65% | 3.1 m/s | 5.9 |
| 1996 | 24.5°C | 19.1°C | 13.6°C | 28.4°C | 10.0°C | 51 mm | 67% | 3.1 m/s | 6.1 |
| 1995 | 26.7°C | 21.4°C | 16.0°C | 34.9°C | 10.8°C | 55 mm | 67% | 2.9 m/s | 5.5 |
| 1994 | 25.8°C | 20.7°C | 15.6°C | 29.0°C | 10.5°C | 61 mm | 70% | 2.6 m/s | 5.6 |
| 1993 | 26.1°C | 21.0°C | 15.8°C | 29.4°C | 11.6°C | 79 mm | 69% | 3 m/s | 5.7 |
| 1992 ❄️ | 23.0°C | 18.1°C | 13.2°C | 25.8°C | 8.5°C | 110 mm | 71% | 2.9 m/s | 5.3 |
| 1991 | 26.8°C | 21.5°C | 16.1°C | 33.0°C | 12.2°C | 62 mm | 63% | 2.9 m/s | 5.9 |
| 1990 | 26.0°C | 20.7°C | 15.4°C | 32.2°C | 11.7°C | 56 mm | 65% | 2.9 m/s | 5.5 |
| 1989 | 27.5°C | 22.0°C | 16.5°C | 32.2°C | 11.4°C | 23 mm | 60% | 2.4 m/s | 5.9 |
| 1988 | 29.3°C | 23.3°C | 17.4°C | 36.5°C | 10.8°C | 76 mm | 59% | 2.5 m/s | 5.4 |
| 1987 | 28.5°C | 23.0°C | 17.5°C | 33.6°C | 13.1°C | 51 mm | 62% | 3 m/s | 6 |
| 1986 | 26.7°C | 21.4°C | 16.0°C | 31.6°C | 9.7°C | 67 mm | 66% | 2.9 m/s | 5.8 |
| 1985 | 25.3°C | 20.0°C | 14.7°C | 29.1°C | 10.8°C | 53 mm | 64% | 3.1 m/s | 5.8 |
| 1984 | 25.8°C | 20.3°C | 14.8°C | 31.8°C | 9.1°C | 40 mm | 65% | 2.9 m/s | 4.4 |
| 1983 | 28.2°C | 22.7°C | 17.2°C | 32.3°C | 10.7°C | 34 mm | 63% | 3.2 m/s | — |
| 1982 | 26.8°C | 21.0°C | 15.3°C | 31.0°C | 8.5°C | 25 mm | 63% | 2.9 m/s | — |
| 1981 | 26.5°C | 21.3°C | 16.1°C | 31.9°C | 11.3°C | 81 mm | 66% | 2.9 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 26.8°C with lows near 16.4°C (mean 21.6°C), based on 45 years of NASA POWER data.
July averages 62 mm of rainfall in Bowmanville, about average for rainfall. The wettest on record was 145 mm in 2004.
The hottest July reached 36.5°C in 1988. The coldest dipped to 8.1°C in 2001.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.5°C. Daytime highs moved from 26.5°C to 27.8°C and overnight lows from 15.6°C to 17.4°C over the same span.
July is one of the warmer months of the year in Bowmanville and about average for rainfall, so plan for around 26.8°C daytime highs and 16.4°C at night.
Not quite — July is the 12th coolest month in Bowmanville, averaging 21.6°C.
For July in Bowmanville, pack light layers you can adjust through the day, with typical highs of 26.8°C and lows of 16.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 66% — moderately humid.
Average wind speed in July is 2.8 m/s. The windiest July on record averaged 3.2 m/s (1983).
The wettest July on record was 2004 with 145 mm. On average, July sees 62 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Bowmanville behaves each July, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for July specifically, along with year-by-year records and how the month has changed over the decades.
