August is one of the warmer months of the year in Moose Jaw, with average highs near 27.1°C and lows around 13.3°C (mean 20.2°C). It is about average for rainfall, averaging 40 mm of rainfall and 53% relative humidity across the period.
August is one of the warmer months of the year in Moose Jaw. Across 45 years of records, the warmest August in Moose Jaw was 1983 — when the month averaged 23.4°C — while the coldest was 2004 at 16.2°C. Typical August days reach 27.1°C with nights near 13.3°C. The long-term trend is warming, about 0.2°C per decade.
August is about average for rainfall in Moose Jaw, averaging 40 mm of rainfall. The wettest August on record was 2002 with 115 mm, while the driest was 2001 at 8 mm.
Relative humidity in Moose Jaw during August averages 53%. The most humid August was 2002 at 68%, and the least humid were 1984 and 2001 at 43%.
August receives about 5.3 kWh/m²/day of solar energy in Moose Jaw. The sunniest August was 2001 at 6.1 kWh/m²/day, and the cloudiest was 2021 at 4.4.
Average wind speed in Moose Jaw during August is 3 m/s. The windiest Augusts were 1988 and 1995 at 3.6 m/s, while the calmest was 2013 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.1°C | 20.1°C | 19.6°C | 20.2°C | 21.3°C | +1.2°C |
| Avg High | 27.1°C | 27.0°C | 26.4°C | 27.0°C | 28.1°C | +1°C |
| Avg Low | 13.1°C | 13.3°C | 12.7°C | 13.4°C | 14.6°C | +1.5°C |
| Avg Rain | 33 mm | 45 mm | 42 mm | 37 mm | 39 mm | +6 mm |
August temperatures in Moose Jaw have risen by about 0.4°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 3.6°C (1992) to a record high of 41.4°C (2018).
Rainfall in August is about average for rainfall, averaging 40 mm, with a wettest year of 115 mm.
One of the best times to visit Moose Jaw
August is one of the best times to visit Moose Jaw. Expect days averaging 27.1°C and nights around 13.3°C (mean 20.2°C) — warmer than Moose Jaw's yearly average — with moderate rainfall (40 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 | 27.6°C | 21.2°C | 14.8°C | 34.6°C | 8.6°C | 46 mm | 61% | 2.7 m/s | 5.1 |
| 2024 | 28.4°C | 21.8°C | 15.2°C | 38.7°C | 8.4°C | 11 mm | 48% | 3.1 m/s | 5.3 |
| 2023 | 27.8°C | 21.2°C | 14.5°C | 37.0°C | 11.0°C | 26 mm | 53% | 3 m/s | 4.8 |
| 2022 | 29.2°C | 22.2°C | 15.2°C | 38.1°C | 9.1°C | 79 mm | 55% | 2.9 m/s | 5.7 |
| 2021 | 26.0°C | 19.8°C | 13.6°C | 36.8°C | 7.1°C | 59 mm | 57% | 3.2 m/s | 4.4 |
| 2020 | 29.4°C | 21.7°C | 14.0°C | 38.3°C | 6.3°C | 11 mm | 44% | 3.1 m/s | 6 |
| 2019 | 25.4°C | 18.8°C | 12.2°C | 37.6°C | 7.5°C | 74 mm | 57% | 3.3 m/s | 5.2 |
| 2018 | 28.0°C | 20.8°C | 13.5°C | 41.4°C | 6.8°C | 16 mm | 47% | 2.7 m/s | 5 |
| 2017 | 27.1°C | 20.1°C | 13.2°C | 35.1°C | 9.3°C | 24 mm | 50% | 2.8 m/s | 5.2 |
| 2016 | 26.3°C | 19.6°C | 12.8°C | 32.0°C | 7.5°C | 44 mm | 57% | 3.1 m/s | 5.2 |
| 2015 | 27.0°C | 20.1°C | 13.3°C | 36.1°C | 4.4°C | 35 mm | 56% | 2.9 m/s | 5.2 |
| 2014 | 26.3°C | 20.1°C | 14.0°C | 35.3°C | 6.6°C | 64 mm | 62% | 2.7 m/s | 5 |
| 2013 | 28.3°C | 21.3°C | 14.3°C | 36.6°C | 9.3°C | 17 mm | 51% | 2.4 m/s | 5.3 |
| 2012 | 28.8°C | 21.4°C | 13.9°C | 35.1°C | 7.6°C | 14 mm | 48% | 3.1 m/s | 5.4 |
| 2011 | 27.9°C | 21.0°C | 14.1°C | 35.0°C | 9.8°C | 39 mm | 52% | 3.1 m/s | 5.7 |
| 2010 | 25.3°C | 19.1°C | 13.0°C | 34.9°C | 8.5°C | 48 mm | 61% | 3.2 m/s | 4.9 |
| 2009 | 25.4°C | 18.7°C | 12.0°C | 34.4°C | 8.4°C | 55 mm | 58% | 2.9 m/s | 4.8 |
| 2008 | 27.6°C | 20.4°C | 13.2°C | 36.5°C | 6.8°C | 30 mm | 51% | 3.5 m/s | 5.5 |
| 2007 | 25.5°C | 18.9°C | 12.3°C | 33.7°C | 5.4°C | 43 mm | 55% | 3.4 m/s | 5.1 |
| 2006 | 28.4°C | 20.8°C | 13.3°C | 37.2°C | 10.5°C | 13 mm | 49% | 3.1 m/s | 5.6 |
| 2005 | 25.5°C | 18.5°C | 11.5°C | 36.3°C | 6.6°C | 35 mm | 57% | 3.4 m/s | 5.2 |
| 2004 ❄️ | 22.2°C | 16.2°C | 10.3°C | 30.1°C | 3.6°C | 63 mm | 66% | 3 m/s | 4.6 |
| 2003 | 30.1°C | 22.9°C | 15.7°C | 37.2°C | 6.6°C | 18 mm | 45% | 2.9 m/s | 5.4 |
| 2002 🌧️ | 23.1°C | 17.2°C | 11.3°C | 30.3°C | 4.2°C | 115 mm | 68% | 2.9 m/s | 4.6 |
| 2001 | 30.2°C | 22.2°C | 14.3°C | 38.5°C | 9.9°C | 8 mm | 43% | 3.1 m/s | 6.1 |
| 2000 | 26.4°C | 19.7°C | 13.0°C | 34.1°C | 6.0°C | 43 mm | 54% | 3.1 m/s | 5.1 |
| 1999 | 27.7°C | 20.7°C | 13.8°C | 34.7°C | 10.0°C | 18 mm | 52% | 3 m/s | 5.5 |
| 1998 | 29.0°C | 22.0°C | 15.0°C | 36.9°C | 11.2°C | 44 mm | 51% | 2.7 m/s | 5.6 |
| 1997 | 28.3°C | 21.2°C | 14.1°C | 35.9°C | 7.8°C | 25 mm | 47% | 2.8 m/s | 5.5 |
| 1996 | 29.0°C | 21.4°C | 13.8°C | 34.6°C | 8.9°C | 23 mm | 46% | 3.2 m/s | 5.8 |
| 1995 | 25.7°C | 19.0°C | 12.2°C | 35.6°C | 9.0°C | 90 mm | 58% | 3.6 m/s | 5 |
| 1994 | 26.6°C | 19.8°C | 13.1°C | 36.2°C | 6.3°C | 37 mm | 52% | 2.6 m/s | 5.1 |
| 1993 | 23.4°C | 17.5°C | 11.7°C | 32.7°C | 6.4°C | 95 mm | 65% | 2.9 m/s | 5.1 |
| 1992 | 24.2°C | 17.5°C | 10.9°C | 35.1°C | 3.6°C | 44 mm | 52% | 3 m/s | 5.2 |
| 1991 | 28.6°C | 21.7°C | 14.8°C | 36.5°C | 10.6°C | 43 mm | 54% | 3.3 m/s | 5.6 |
| 1990 | 27.5°C | 20.6°C | 13.7°C | 37.8°C | 9.6°C | 31 mm | 51% | 2.9 m/s | 5.2 |
| 1989 | 27.3°C | 20.6°C | 13.9°C | 38.9°C | 6.9°C | 53 mm | 49% | 2.8 m/s | 5.3 |
| 1988 | 27.3°C | 20.1°C | 13.0°C | 34.2°C | 8.2°C | 34 mm | 47% | 3.6 m/s | 5 |
| 1987 | 23.1°C | 16.7°C | 10.2°C | 32.1°C | 5.6°C | 32 mm | 57% | 3.2 m/s | 5 |
| 1986 | 27.2°C | 19.6°C | 12.1°C | 34.2°C | 5.9°C | 13 mm | 45% | 2.8 m/s | 5.7 |
| 1985 | 23.7°C | 17.3°C | 10.8°C | 32.9°C | 7.2°C | 65 mm | 58% | 3.3 m/s | 5.1 |
| 1984 | 29.9°C | 22.7°C | 15.5°C | 38.2°C | 7.2°C | 11 mm | 43% | 3.4 m/s | 5.6 |
| 1983 🔥 | 31.2°C | 23.4°C | 15.6°C | 39.4°C | 9.3°C | 13 mm | 45% | 3 m/s | — |
| 1982 | 25.8°C | 18.9°C | 11.9°C | 33.4°C | 5.4°C | 34 mm | 53% | 3 m/s | — |
| 1981 | 28.7°C | 21.8°C | 15.0°C | 33.5°C | 7.9°C | 43 mm | 55% | 2.6 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 27.1°C with lows near 13.3°C (mean 20.2°C), based on 45 years of NASA POWER data.
August averages 40 mm of rainfall in Moose Jaw, about average for rainfall. The wettest on record was 115 mm in 2002.
The hottest August reached 41.4°C in 2018. The coldest dipped to 3.6°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.4°C — but days and nights have moved in opposite directions. Overnight lows rose from 13.8°C to 14.7°C while daytime highs eased from 27.9°C to 27.8°C, narrowing the gap between day and night.
August is one of the warmer months of the year in Moose Jaw and about average for rainfall, so plan for around 27.1°C daytime highs and 13.3°C at night.
Not quite — August is the 11th coolest month in Moose Jaw, averaging 20.2°C.
For August in Moose Jaw, pack light layers you can adjust through the day, with typical highs of 27.1°C and lows of 13.3°C.
Relative humidity in August averages 53% — relatively dry.
Average wind speed in August is 3 m/s. The windiest August on record averaged 3.6 m/s (1988).
The wettest August on record was 2002 with 115 mm. On average, August sees 40 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 Moose Jaw 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.
