August is one of the warmer months of the year in Shediac, with average highs near 22.7°C and lows around 14.5°C (mean 18.6°C). It is about average for rainfall, averaging 77 mm of rainfall and 81% relative humidity across the period.
August is one of the warmer months of the year in Shediac. Across 45 years of records, the warmest August in Shediac was 2012 — when the month averaged 20.4°C — while the coldest was 1982 at 16.2°C. Typical August days reach 22.7°C with nights near 14.5°C. The long-term trend is warming, about 0.4°C per decade.
August is about average for rainfall in Shediac, averaging 77 mm of rainfall. The wettest August on record was 2009 with 175 mm, while the driest was 1993 at 18 mm.
Relative humidity in Shediac during August averages 81%. The most humid August was 2008 at 87%, and the least humid was 2025 at 72%.
August receives about 4.9 kWh/m²/day of solar energy in Shediac. The sunniest August was 2025 at 5.6 kWh/m²/day, and the cloudiest were 1988 and 2008 at 4.1.
Average wind speed in Shediac during August is 0.9 m/s. The windiest August was 2020 at 1.1 m/s, while the calmest were 2005, 2010 and 2012, among others at 0.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.8°C | 18.5°C | 18.3°C | 19.1°C | 19.5°C | +1.7°C |
| Avg High | 21.9°C | 22.8°C | 22.3°C | 23.2°C | 23.7°C | +1.8°C |
| Avg Low | 13.8°C | 14.2°C | 14.3°C | 15.1°C | 15.3°C | +1.5°C |
| Avg Rain | 82 mm | 62 mm | 88 mm | 75 mm | 75 mm | -7 mm |
August temperatures in Shediac have risen by about 1.7°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 6.7°C (1982) to a record high of 32.1°C (2025).
Rainfall in August is about average for rainfall, averaging 77 mm, with a wettest year of 175 mm.
One of the best times to visit Shediac
August is one of the best times to visit Shediac. Expect days averaging 22.7°C and nights around 14.5°C (mean 18.6°C) — warmer than Shediac's yearly average — with moderate rainfall (77 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 | 24.3°C | 19.2°C | 14.2°C | 32.1°C | 10.8°C | 29 mm | 72% | 1 m/s | 5.6 |
| 2024 | 23.6°C | 19.5°C | 15.4°C | 28.2°C | 11.1°C | 67 mm | 83% | 0.9 m/s | 5 |
| 2023 | 22.1°C | 18.4°C | 14.6°C | 23.9°C | 10.4°C | 115 mm | 84% | 0.9 m/s | 4.2 |
| 2022 | 24.1°C | 20.3°C | 16.5°C | 29.2°C | 13.7°C | 109 mm | 83% | 0.9 m/s | 4.5 |
| 2021 | 24.4°C | 20.2°C | 16.0°C | 29.6°C | 12.2°C | 69 mm | 82% | 0.9 m/s | 5.1 |
| 2020 | 23.8°C | 19.5°C | 15.1°C | 28.7°C | 9.7°C | 62 mm | 78% | 1.1 m/s | 5.4 |
| 2019 | 23.4°C | 19.0°C | 14.7°C | 26.6°C | 10.6°C | 74 mm | 81% | 0.9 m/s | 5.1 |
| 2018 | 24.3°C | 20.3°C | 16.3°C | 28.5°C | 13.3°C | 83 mm | 83% | 0.9 m/s | 4.8 |
| 2017 | 22.6°C | 18.4°C | 14.1°C | 26.2°C | 10.6°C | 59 mm | 82% | 0.9 m/s | 5.1 |
| 2016 | 22.7°C | 18.7°C | 14.7°C | 25.2°C | 11.7°C | 100 mm | 82% | 1 m/s | 4.8 |
| 2015 | 24.1°C | 20.3°C | 16.5°C | 27.8°C | 13.8°C | 74 mm | 86% | 0.9 m/s | 5.1 |
| 2014 | 22.4°C | 18.5°C | 14.6°C | 26.4°C | 9.0°C | 68 mm | 81% | 1 m/s | 4.6 |
| 2013 | 22.7°C | 18.4°C | 14.1°C | 26.1°C | 9.9°C | 48 mm | 81% | 1 m/s | 5.1 |
| 2012 🔥 | 24.6°C | 20.4°C | 16.3°C | 27.2°C | 12.1°C | 60 mm | 82% | 0.8 m/s | 4.8 |
| 2011 | 22.3°C | 18.6°C | 14.9°C | 24.7°C | 11.8°C | 114 mm | 86% | 0.9 m/s | 4.4 |
| 2010 | 22.9°C | 18.8°C | 14.8°C | 28.3°C | 11.8°C | 70 mm | 81% | 0.8 m/s | 5.2 |
| 2009 🌧️ | 22.7°C | 18.8°C | 14.9°C | 27.5°C | 8.9°C | 175 mm | 84% | 0.9 m/s | 4.9 |
| 2008 | 21.3°C | 17.7°C | 14.2°C | 25.3°C | 11.1°C | 132 mm | 87% | 0.9 m/s | 4.1 |
| 2007 | 21.8°C | 17.7°C | 13.7°C | 26.2°C | 9.1°C | 104 mm | 82% | 0.9 m/s | 5.2 |
| 2006 | 20.7°C | 16.7°C | 12.7°C | 25.7°C | 8.8°C | 74 mm | 83% | 1 m/s | 4.8 |
| 2005 | 22.6°C | 18.4°C | 14.3°C | 27.6°C | 9.5°C | 47 mm | 82% | 0.8 m/s | 4.7 |
| 2004 | 22.8°C | 18.7°C | 14.7°C | 25.9°C | 10.4°C | 79 mm | 82% | 0.9 m/s | 4.8 |
| 2003 | 22.4°C | 18.5°C | 14.5°C | 26.8°C | 8.8°C | 97 mm | 84% | 0.8 m/s | 4.4 |
| 2002 | 23.1°C | 18.9°C | 14.7°C | 28.9°C | 9.6°C | 58 mm | 80% | 0.9 m/s | 5.3 |
| 2001 | 23.5°C | 19.1°C | 14.8°C | 26.8°C | 9.6°C | 26 mm | 80% | 0.9 m/s | 5.2 |
| 2000 | 22.0°C | 18.1°C | 14.2°C | 25.0°C | 10.9°C | 89 mm | 83% | 0.9 m/s | 4.6 |
| 1999 | 22.6°C | 18.5°C | 14.4°C | 27.3°C | 10.5°C | 98 mm | 79% | 1 m/s | 4.8 |
| 1998 | 23.6°C | 19.0°C | 14.5°C | 29.2°C | 10.9°C | 74 mm | 77% | 0.9 m/s | 5 |
| 1997 | 21.6°C | 17.5°C | 13.4°C | 24.6°C | 10.4°C | 28 mm | 81% | 0.9 m/s | 4.8 |
| 1996 | 22.7°C | 18.3°C | 13.9°C | 29.2°C | 11.2°C | 26 mm | 80% | 0.8 m/s | 5.3 |
| 1995 | 23.1°C | 18.4°C | 13.8°C | 31.9°C | 10.2°C | 35 mm | 73% | 1 m/s | 5.4 |
| 1994 | 22.5°C | 18.3°C | 14.0°C | 26.8°C | 10.4°C | 36 mm | 77% | 1 m/s | 5 |
| 1993 | 23.6°C | 19.0°C | 14.3°C | 27.8°C | 11.1°C | 18 mm | 77% | 0.8 m/s | 5.3 |
| 1992 | 22.5°C | 18.0°C | 13.6°C | 26.9°C | 10.7°C | 70 mm | 81% | 0.8 m/s | 4.9 |
| 1991 | 22.3°C | 18.4°C | 14.4°C | 26.4°C | 10.4°C | 137 mm | 83% | 1 m/s | 4.8 |
| 1990 | 24.0°C | 19.8°C | 15.6°C | 28.0°C | 10.8°C | 101 mm | 82% | 0.8 m/s | 5.2 |
| 1989 | 22.1°C | 18.2°C | 14.3°C | 26.2°C | 7.9°C | 61 mm | 81% | 1 m/s | 4.7 |
| 1988 | 22.3°C | 18.6°C | 14.8°C | 27.4°C | 9.3°C | 116 mm | 84% | 0.8 m/s | 4.1 |
| 1987 | 22.4°C | 17.8°C | 13.2°C | 29.8°C | 8.5°C | 35 mm | 75% | 0.9 m/s | 4.9 |
| 1986 | 20.7°C | 16.9°C | 13.2°C | 25.0°C | 7.6°C | 88 mm | 84% | 0.9 m/s | 4.6 |
| 1985 | 21.6°C | 17.6°C | 13.5°C | 27.0°C | 9.0°C | 81 mm | 82% | 0.8 m/s | 5 |
| 1984 | 24.1°C | 19.9°C | 15.6°C | 28.9°C | 10.6°C | 90 mm | 83% | 0.8 m/s | 5.2 |
| 1983 | 21.6°C | 17.7°C | 13.8°C | 26.5°C | 9.6°C | 95 mm | 84% | 0.9 m/s | — |
| 1982 ❄️ | 20.0°C | 16.2°C | 12.4°C | 25.4°C | 6.7°C | 96 mm | 82% | 1 m/s | — |
| 1981 | 21.9°C | 17.7°C | 13.5°C | 26.3°C | 9.9°C | 79 mm | 83% | 1 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 22.7°C with lows near 14.5°C (mean 18.6°C), based on 45 years of NASA POWER data.
August averages 77 mm of rainfall in Shediac, about average for rainfall. The wettest on record was 175 mm in 2009.
The hottest August reached 32.1°C in 2025. The coldest dipped to 6.7°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.7°C. Daytime highs moved from 21.8°C to 23.7°C and overnight lows from 13.8°C to 15.3°C over the same span.
August is one of the warmer months of the year in Shediac and about average for rainfall, so plan for around 22.7°C daytime highs and 14.5°C at night.
Not quite — August is the 12th coolest month in Shediac, averaging 18.6°C.
For August in Shediac, pack light layers you can adjust through the day, with typical highs of 22.7°C and lows of 14.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 81% — quite humid.
Average wind speed in August is 0.9 m/s. The windiest August on record averaged 1.1 m/s (2020).
The wettest August on record was 2009 with 175 mm. On average, August sees 77 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 Shediac 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.
