August is one of the warmer months of the year in Thompson, with average highs near 20.7°C and lows around 10°C (mean 15.4°C). It is a relatively wet time of year, averaging 84 mm of rainfall and 78% relative humidity across the period.
August is one of the warmer months of the year in Thompson. Across 45 years of records, the warmest August in Thompson was 2003 — when the month averaged 19°C — while the coldest was 2004 at 12°C. Typical August days reach 20.7°C with nights near 10°C. The long-term trend is cooling, about 0.2°C per decade.
August is a relatively wet time of year in Thompson, averaging 84 mm of rainfall. The wettest August on record was 2010 with 222 mm, while the driest was 1992 at 21 mm.
Relative humidity in Thompson during August averages 78%. The most humid August was 2005 at 85%, and the least humid was 2003 at 65%.
August receives about 4.4 kWh/m²/day of solar energy in Thompson. The sunniest Augusts were 1985 and 2008 at 5 kWh/m²/day, and the cloudiest were 2005 and 2025 at 3.8.
Average wind speed in Thompson during August is 0.4 m/s. The windiest Augusts were 1988, 2008 and 2019 at 0.5 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.4°C | 15.9°C | 15.0°C | 15.0°C | 15.4°C | 0°C |
| Avg High | 21.0°C | 21.6°C | 20.2°C | 20.1°C | 20.3°C | -0.7°C |
| Avg Low | 9.8°C | 10.1°C | 9.8°C | 10.0°C | 10.5°C | +0.7°C |
| Avg Rain | 79 mm | 76 mm | 91 mm | 90 mm | 83 mm | +4 mm |
August temperatures in Thompson have fallen by about 0.5°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 0.6°C (1982) to a record high of 33.2°C (1990).
Rainfall in August is a relatively wet time of year, averaging 84 mm, with a wettest year of 222 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.4°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
One of the best times to visit Thompson
August is one of the best times to visit Thompson. Expect days averaging 20.7°C and nights around 10°C (mean 15.4°C) — warmer than Thompson's yearly average — with higher rainfall (84 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 | 20.6°C | 15.5°C | 10.4°C | 29.0°C | 4.0°C | 107 mm | 81% | 0.4 m/s | 3.8 |
| 2024 | 21.9°C | 16.6°C | 11.3°C | 28.6°C | 6.1°C | 61 mm | 80% | 0.4 m/s | 4.4 |
| 2023 | 20.4°C | 15.8°C | 11.2°C | 25.7°C | 7.0°C | 66 mm | 83% | 0.4 m/s | 4.1 |
| 2022 | 20.4°C | 15.1°C | 9.7°C | 27.1°C | 4.0°C | 65 mm | 82% | 0.4 m/s | 4.7 |
| 2021 | 19.0°C | 14.4°C | 9.8°C | 27.5°C | 5.5°C | 53 mm | 83% | 0.4 m/s | 4 |
| 2020 | 19.4°C | 15.1°C | 10.8°C | 28.6°C | 6.0°C | 146 mm | 84% | 0.4 m/s | 4.4 |
| 2019 | 18.0°C | 13.7°C | 9.4°C | 28.5°C | 3.9°C | 95 mm | 82% | 0.5 m/s | 3.9 |
| 2018 | 18.8°C | 13.8°C | 8.8°C | 28.2°C | 1.6°C | 68 mm | 81% | 0.4 m/s | 4 |
| 2017 | 22.0°C | 16.4°C | 10.8°C | 26.8°C | 6.0°C | 38 mm | 76% | 0.4 m/s | 4.9 |
| 2016 | 19.6°C | 14.6°C | 9.7°C | 25.2°C | 4.7°C | 35 mm | 77% | 0.4 m/s | 4.3 |
| 2015 | 20.0°C | 14.9°C | 9.9°C | 30.0°C | 3.3°C | 56 mm | 81% | 0.4 m/s | 4 |
| 2014 | 20.9°C | 15.6°C | 10.3°C | 28.6°C | 3.6°C | 86 mm | 78% | 0.4 m/s | 4.2 |
| 2013 | 21.8°C | 16.0°C | 10.1°C | 28.5°C | 4.8°C | 65 mm | 74% | 0.4 m/s | 4.3 |
| 2012 | 21.0°C | 15.5°C | 10.0°C | 26.8°C | 5.1°C | 71 mm | 77% | 0.4 m/s | 4.4 |
| 2011 | 20.7°C | 15.9°C | 11.1°C | 26.0°C | 5.6°C | 163 mm | 83% | 0.4 m/s | 4.3 |
| 2010 🌧️ | 18.3°C | 13.9°C | 9.4°C | 26.6°C | 3.8°C | 222 mm | 84% | 0.4 m/s | 3.9 |
| 2009 | 17.6°C | 13.0°C | 8.4°C | 26.1°C | 2.4°C | 70 mm | 84% | 0.4 m/s | 4.2 |
| 2008 | 22.9°C | 17.3°C | 11.7°C | 29.8°C | 3.5°C | 74 mm | 79% | 0.5 m/s | 5 |
| 2007 | 17.8°C | 13.1°C | 8.4°C | 25.9°C | 3.6°C | 157 mm | 81% | 0.4 m/s | 4 |
| 2006 | 20.2°C | 15.1°C | 10.1°C | 25.2°C | 5.0°C | 85 mm | 82% | 0.4 m/s | 4.7 |
| 2005 | 18.6°C | 14.2°C | 9.8°C | 27.1°C | 5.4°C | 130 mm | 85% | 0.4 m/s | 3.8 |
| 2004 ❄️ | 17.2°C | 12.0°C | 6.8°C | 26.2°C | 2.6°C | 77 mm | 78% | 0.4 m/s | 4.2 |
| 2003 🔥 | 25.4°C | 19.0°C | 12.6°C | 32.6°C | 5.1°C | 34 mm | 65% | 0.4 m/s | 4.8 |
| 2002 | 20.8°C | 15.3°C | 9.8°C | 29.4°C | 4.9°C | 103 mm | 77% | 0.4 m/s | 4.3 |
| 2001 | 21.8°C | 16.4°C | 10.9°C | 31.5°C | 6.3°C | 61 mm | 75% | 0.4 m/s | 4.4 |
| 2000 | 19.7°C | 14.7°C | 9.8°C | 25.5°C | 1.6°C | 122 mm | 79% | 0.4 m/s | 4.3 |
| 1999 | 21.1°C | 15.5°C | 10.0°C | 30.8°C | 5.9°C | 74 mm | 75% | 0.4 m/s | 4.6 |
| 1998 | 22.5°C | 17.1°C | 11.7°C | 29.6°C | 5.7°C | 66 mm | 80% | 0.4 m/s | 4.6 |
| 1997 | 20.6°C | 15.2°C | 9.7°C | 30.6°C | 4.3°C | 153 mm | 79% | 0.4 m/s | 4.2 |
| 1996 | 23.1°C | 17.0°C | 10.8°C | 31.0°C | 6.2°C | 49 mm | 73% | 0.4 m/s | 4.6 |
| 1995 | 20.5°C | 15.5°C | 10.5°C | 30.9°C | 6.0°C | 148 mm | 81% | 0.4 m/s | 3.9 |
| 1994 | 20.7°C | 14.4°C | 8.2°C | 27.4°C | 4.6°C | 23 mm | 71% | 0.4 m/s | 4.4 |
| 1993 | 20.2°C | 15.2°C | 10.2°C | 26.3°C | 3.7°C | 104 mm | 81% | 0.4 m/s | 4.2 |
| 1992 | 21.1°C | 14.9°C | 8.7°C | 30.5°C | 1.4°C | 21 mm | 70% | 0.4 m/s | 4.9 |
| 1991 | 23.2°C | 17.2°C | 11.3°C | 32.7°C | 5.1°C | 68 mm | 73% | 0.4 m/s | 4.9 |
| 1990 | 23.0°C | 16.5°C | 10.1°C | 33.2°C | 5.2°C | 56 mm | 69% | 0.4 m/s | 4.7 |
| 1989 | 21.6°C | 15.9°C | 10.1°C | 29.3°C | 4.5°C | 106 mm | 77% | 0.4 m/s | 4.2 |
| 1988 | 21.3°C | 15.9°C | 10.4°C | 27.1°C | 6.0°C | 60 mm | 75% | 0.5 m/s | 4.3 |
| 1987 | 18.0°C | 12.8°C | 7.6°C | 30.6°C | 2.9°C | 118 mm | 78% | 0.4 m/s | 4.4 |
| 1986 | 19.5°C | 14.0°C | 8.5°C | 27.1°C | 1.7°C | 69 mm | 79% | 0.4 m/s | 4.6 |
| 1985 | 19.6°C | 13.8°C | 8.1°C | 26.7°C | 2.7°C | 63 mm | 76% | 0.4 m/s | 5 |
| 1984 | 23.6°C | 17.7°C | 11.8°C | 31.7°C | 1.8°C | 53 mm | 74% | 0.4 m/s | 4.3 |
| 1983 | 23.9°C | 18.2°C | 12.4°C | 30.8°C | 5.6°C | 98 mm | 78% | 0.4 m/s | — |
| 1982 | 17.6°C | 12.9°C | 8.2°C | 24.7°C | 0.6°C | 102 mm | 81% | 0.4 m/s | — |
| 1981 | 23.9°C | 17.6°C | 11.3°C | 30.2°C | 3.4°C | 40 mm | 74% | 0.4 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 20.7°C with lows near 10°C (mean 15.4°C), based on 45 years of NASA POWER data.
August averages 84 mm of rainfall in Thompson, a relatively wet time of year. The wettest on record was 222 mm in 2010.
The hottest August reached 33.2°C in 1990. The coldest dipped to 0.6°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have fallen by about 0.5°C — but days and nights have moved in opposite directions. Overnight lows rose from 10.4°C to 10.5°C while daytime highs eased from 21.7°C to 20.5°C, narrowing the gap between day and night.
August is one of the warmer months of the year in Thompson and a relatively wet time of year, so plan for around 20.7°C daytime highs and 10°C at night.
Not quite — August is the 11th coolest month in Thompson, averaging 15.4°C.
For August in Thompson, pack light layers you can adjust through the day, with typical highs of 20.7°C and lows of 10°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 78% — quite humid.
Average wind speed in August is 0.4 m/s. The windiest August on record averaged 0.5 m/s (1988).
The wettest August on record was 2010 with 222 mm. On average, August sees 84 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 Thompson behaves each August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
