August is one of the warmer months of the year in Edmundston, with average highs near 21.4°C and lows around 11.3°C (mean 16.4°C). It is a relatively wet time of year, averaging 109 mm of rainfall and 84% relative humidity across the period.
August is one of the warmer months of the year in Edmundston. Across 45 years of records, the warmest August in Edmundston was 2021 — when the month averaged 18.9°C — while the coldest was 1982 at 12.8°C. Typical August days reach 21.4°C with nights near 11.3°C. The long-term trend is warming, about 0.5°C per decade.
August is a relatively wet time of year in Edmundston, averaging 109 mm of rainfall. The wettest August on record was 2011 with 215 mm, while the driest was 1985 at 52 mm.
Relative humidity in Edmundston during August averages 84%. The most humid August was 2011 at 88%, and the least humid were 1995 and 2025 at 81%.
August receives about 4.8 kWh/m²/day of solar energy in Edmundston. The sunniest Augusts were 1998, 2010 and 2025, among others at 5.3 kWh/m²/day, and the cloudiest were 1988 and 2023 at 4.1.
Average wind speed in Edmundston during August is 0.1 m/s. The windiest Augusts were 2023, 2024 and 2025, among others at 0.1 m/s, while the calmest were 2018, 2020 and 2021, among others at 0 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.3°C | 16.0°C | 16.3°C | 17.1°C | 17.2°C | +1.9°C |
| Avg High | 20.6°C | 21.2°C | 21.3°C | 21.9°C | 22.2°C | +1.6°C |
| Avg Low | 10.1°C | 10.8°C | 11.3°C | 12.3°C | 12.2°C | +2.1°C |
| Avg Rain | 120 mm | 102 mm | 109 mm | 105 mm | 108 mm | -12 mm |
August temperatures in Edmundston have risen by about 1.9°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 1.2°C (1986) to a record high of 31.8°C (1986).
Rainfall in August is a relatively wet time of year, averaging 109 mm, with a wettest year of 215 mm.
One of the best times to visit Edmundston
August is one of the best times to visit Edmundston. Expect days averaging 21.4°C and nights around 11.3°C (mean 16.4°C) — warmer than Edmundston's yearly average — with higher rainfall (109 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 | 22.2°C | 16.6°C | 10.9°C | 30.6°C | 4.0°C | 67 mm | 81% | 0.1 m/s | 5.3 |
| 2024 | 22.1°C | 17.3°C | 12.6°C | 28.4°C | 6.0°C | 127 mm | 85% | 0.1 m/s | 4.5 |
| 2023 | 20.5°C | 15.9°C | 11.2°C | 26.1°C | 6.1°C | 186 mm | 87% | 0.1 m/s | 4.1 |
| 2022 | 22.6°C | 17.6°C | 12.6°C | 27.9°C | 7.5°C | 113 mm | 85% | 0.1 m/s | 4.7 |
| 2021 🔥 | 24.1°C | 18.9°C | 13.8°C | 29.2°C | 7.6°C | 60 mm | 84% | 0 m/s | 4.9 |
| 2020 | 21.6°C | 16.8°C | 11.9°C | 26.9°C | 5.7°C | 95 mm | 83% | 0 m/s | 5.1 |
| 2019 | 21.3°C | 16.5°C | 11.8°C | 24.6°C | 6.7°C | 82 mm | 84% | 0.1 m/s | 4.8 |
| 2018 | 23.2°C | 18.2°C | 13.2°C | 27.5°C | 6.2°C | 107 mm | 86% | 0 m/s | 4.9 |
| 2017 | 20.7°C | 15.8°C | 10.9°C | 25.8°C | 6.9°C | 74 mm | 83% | 0.1 m/s | 4.9 |
| 2016 | 22.0°C | 17.2°C | 12.4°C | 26.1°C | 7.4°C | 112 mm | 84% | 0.1 m/s | 5 |
| 2015 | 23.1°C | 18.4°C | 13.7°C | 28.2°C | 9.7°C | 119 mm | 87% | 0 m/s | 4.8 |
| 2014 | 22.1°C | 17.2°C | 12.4°C | 27.3°C | 7.0°C | 69 mm | 84% | 0.1 m/s | 5.1 |
| 2013 | 20.6°C | 15.8°C | 11.0°C | 26.5°C | 5.5°C | 125 mm | 87% | 0 m/s | 4.5 |
| 2012 | 22.6°C | 18.0°C | 13.4°C | 27.5°C | 8.5°C | 93 mm | 84% | 0.1 m/s | 4.7 |
| 2011 🌧️ | 21.5°C | 17.0°C | 12.5°C | 26.5°C | 9.1°C | 215 mm | 88% | 0 m/s | 4.2 |
| 2010 | 22.2°C | 17.1°C | 11.9°C | 27.9°C | 7.1°C | 57 mm | 83% | 0.1 m/s | 5.3 |
| 2009 | 22.1°C | 17.2°C | 12.4°C | 27.3°C | 4.3°C | 67 mm | 83% | 0.1 m/s | 4.9 |
| 2008 | 21.0°C | 16.2°C | 11.4°C | 26.6°C | 8.2°C | 145 mm | 86% | 0.1 m/s | 4.4 |
| 2007 | 20.5°C | 15.3°C | 10.0°C | 28.3°C | 4.6°C | 127 mm | 84% | 0.1 m/s | 4.9 |
| 2006 | 19.5°C | 14.6°C | 9.7°C | 24.3°C | 3.7°C | 70 mm | 83% | 0 m/s | 5 |
| 2005 | 21.9°C | 16.8°C | 11.7°C | 29.3°C | 4.7°C | 107 mm | 84% | 0.1 m/s | 4.9 |
| 2004 | 20.9°C | 16.2°C | 11.6°C | 25.1°C | 4.9°C | 200 mm | 87% | 0 m/s | 4.6 |
| 2003 | 21.5°C | 16.7°C | 11.8°C | 28.7°C | 2.7°C | 155 mm | 85% | 0.1 m/s | 4.3 |
| 2002 | 22.3°C | 17.0°C | 11.7°C | 28.7°C | 3.3°C | 55 mm | 83% | 0 m/s | 5.2 |
| 2001 | 22.6°C | 17.1°C | 11.5°C | 27.8°C | 4.5°C | 58 mm | 82% | 0.1 m/s | 5.1 |
| 2000 | 20.7°C | 16.0°C | 11.2°C | 24.2°C | 5.7°C | 103 mm | 86% | 0.1 m/s | 4.7 |
| 1999 | 20.8°C | 15.7°C | 10.6°C | 26.8°C | 6.5°C | 92 mm | 83% | 0.1 m/s | 4.9 |
| 1998 | 21.4°C | 16.1°C | 10.7°C | 27.2°C | 6.2°C | 97 mm | 83% | 0.1 m/s | 5.3 |
| 1997 | 20.1°C | 15.1°C | 10.1°C | 26.1°C | 4.6°C | 120 mm | 85% | 0.1 m/s | 4.6 |
| 1996 | 21.5°C | 16.1°C | 10.6°C | 28.1°C | 5.4°C | 58 mm | 84% | 0.1 m/s | 5.1 |
| 1995 | 21.7°C | 16.2°C | 10.7°C | 28.7°C | 4.5°C | 53 mm | 81% | 0.1 m/s | 5.3 |
| 1994 | 20.1°C | 14.9°C | 9.7°C | 25.8°C | 4.2°C | 79 mm | 82% | 0.1 m/s | 5.1 |
| 1993 | 22.1°C | 16.9°C | 11.8°C | 27.9°C | 6.7°C | 86 mm | 85% | 0.1 m/s | 5 |
| 1992 | 20.4°C | 15.6°C | 10.8°C | 27.1°C | 6.2°C | 119 mm | 86% | 0 m/s | 4.5 |
| 1991 | 21.3°C | 16.2°C | 11.2°C | 27.4°C | 6.7°C | 194 mm | 86% | 0 m/s | 4.6 |
| 1990 | 22.5°C | 17.3°C | 12.0°C | 27.6°C | 4.2°C | 121 mm | 84% | 0 m/s | 5 |
| 1989 | 21.0°C | 15.9°C | 10.9°C | 25.5°C | 4.6°C | 114 mm | 84% | 0 m/s | 4.7 |
| 1988 | 21.1°C | 16.2°C | 11.3°C | 28.4°C | 3.6°C | 157 mm | 86% | 0 m/s | 4.1 |
| 1987 | 19.9°C | 14.4°C | 9.0°C | 28.8°C | 3.5°C | 100 mm | 83% | 0.1 m/s | 4.8 |
| 1986 | 19.9°C | 14.7°C | 9.5°C | 31.8°C | 1.2°C | 190 mm | 86% | 0 m/s | 4.5 |
| 1985 | 20.5°C | 15.2°C | 9.8°C | 26.3°C | 4.2°C | 52 mm | 82% | 0.1 m/s | 5 |
| 1984 | 22.5°C | 17.3°C | 12.1°C | 30.6°C | 5.8°C | 91 mm | 86% | 0 m/s | 5 |
| 1983 | 21.3°C | 15.9°C | 10.5°C | 29.6°C | 5.1°C | 78 mm | 84% | 0.1 m/s | — |
| 1982 ❄️ | 18.0°C | 12.8°C | 7.7°C | 25.5°C | 1.4°C | 121 mm | 84% | 0.1 m/s | — |
| 1981 | 20.8°C | 15.6°C | 10.5°C | 25.1°C | 3.2°C | 176 mm | 85% | 0.1 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 21.4°C with lows near 11.3°C (mean 16.4°C), based on 45 years of NASA POWER data.
August averages 109 mm of rainfall in Edmundston, a relatively wet time of year. The wettest on record was 215 mm in 2011.
The hottest August reached 31.8°C in 1986. The coldest dipped to 1.2°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.9°C. Daytime highs moved from 20.6°C to 22.3°C and overnight lows from 10.1°C to 12.2°C over the same span.
August is one of the warmer months of the year in Edmundston and a relatively wet time of year, so plan for around 21.4°C daytime highs and 11.3°C at night.
Not quite — August is the 11th coolest month in Edmundston, averaging 16.4°C.
For August in Edmundston, pack light layers you can adjust through the day, with typical highs of 21.4°C and lows of 11.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 84% — quite humid.
Average wind speed in August is 0.1 m/s. The windiest August on record averaged 0.1 m/s (1981).
The wettest August on record was 2011 with 215 mm. On average, August sees 109 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 Edmundston 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.
