August is one of the warmer months of the year in Bangor, with average highs near 17.2°C and lows around 13.8°C (mean 15.5°C). It is about average for rainfall, averaging 94 mm of rainfall and 84% relative humidity across the period.
August is one of the warmer months of the year in Bangor. Across 45 years of records, the warmest August in Bangor was 1995 — when the month averaged 18°C — while the coldest was 1986 at 13.2°C. Typical August days reach 17.2°C with nights near 13.8°C. The long-term trend is warming, about 0.2°C per decade.
August is about average for rainfall in Bangor, averaging 94 mm of rainfall. The wettest August on record was 2008 with 175 mm, while the driest was 1995 at 15 mm.
Relative humidity in Bangor during August averages 84%. The most humid August was 2008 at 89%, and the least humid was 1995 at 78%.
August receives about 4.2 kWh/m²/day of solar energy in Bangor. The sunniest August was 1995 at 5.1 kWh/m²/day, and the cloudiest was 2008 at 3.4.
Average wind speed in Bangor during August is 4.4 m/s. The windiest August was 1985 at 6.5 m/s, while the calmest were 1983 and 1984 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.9°C | 15.5°C | 15.6°C | 15.3°C | 16.4°C | +1.5°C |
| Avg High | 16.7°C | 17.3°C | 17.1°C | 16.9°C | 18.2°C | +1.5°C |
| Avg Low | 13.2°C | 13.7°C | 14.0°C | 13.8°C | 14.7°C | +1.5°C |
| Avg Rain | 89 mm | 75 mm | 104 mm | 107 mm | 95 mm | +6 mm |
August temperatures in Bangor have risen by about 1°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 9.4°C (1986) to a record high of 26.4°C (2022).
Rainfall in August is about average for rainfall, averaging 94 mm, with a wettest year of 175 mm.
One of the best times to visit Bangor
August is one of the best times to visit Bangor. Expect days averaging 17.2°C and nights around 13.8°C (mean 15.5°C) — warmer than Bangor's yearly average — with higher rainfall (94 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 | 19.0°C | 17.0°C | 15.1°C | 25.1°C | 13.4°C | 49 mm | 81% | 4.4 m/s | 4.6 |
| 2024 | 17.5°C | 15.9°C | 14.3°C | 21.8°C | 12.4°C | 84 mm | 85% | 5.6 m/s | 4.1 |
| 2023 | 17.3°C | 15.9°C | 14.5°C | 21.4°C | 12.3°C | 162 mm | 86% | 4.9 m/s | 4.4 |
| 2022 | 19.5°C | 17.4°C | 15.2°C | 26.4°C | 12.6°C | 43 mm | 80% | 3.5 m/s | 4.8 |
| 2021 | 17.5°C | 15.8°C | 14.2°C | 19.6°C | 12.7°C | 76 mm | 85% | 4.1 m/s | 3.8 |
| 2020 | 18.1°C | 16.5°C | 14.9°C | 23.4°C | 11.6°C | 156 mm | 85% | 4.6 m/s | 3.9 |
| 2019 | 17.7°C | 16.1°C | 14.6°C | 22.0°C | 12.3°C | 125 mm | 86% | 5.3 m/s | 4.3 |
| 2018 | 17.4°C | 15.9°C | 14.3°C | 20.1°C | 11.6°C | 78 mm | 84% | 4.4 m/s | 4 |
| 2017 | 16.4°C | 15.1°C | 13.7°C | 20.5°C | 12.6°C | 137 mm | 86% | 4.6 m/s | 4.2 |
| 2016 | 17.4°C | 15.8°C | 14.2°C | 20.5°C | 12.1°C | 96 mm | 86% | 4.6 m/s | 4.2 |
| 2015 | 16.7°C | 15.0°C | 13.3°C | 19.1°C | 11.4°C | 121 mm | 84% | 4.5 m/s | 4.5 |
| 2014 | 16.2°C | 14.6°C | 13.1°C | 18.8°C | 10.8°C | 130 mm | 82% | 5.3 m/s | 4.3 |
| 2013 | 17.4°C | 15.7°C | 14.1°C | 20.4°C | 11.7°C | 89 mm | 85% | 4.4 m/s | 4.3 |
| 2012 | 17.3°C | 15.8°C | 14.3°C | 21.5°C | 11.7°C | 137 mm | 86% | 4.7 m/s | 4.1 |
| 2011 | 16.1°C | 14.6°C | 13.2°C | 17.8°C | 11.6°C | 83 mm | 83% | 4.2 m/s | 4.1 |
| 2010 | 16.3°C | 14.8°C | 13.2°C | 18.6°C | 11.6°C | 72 mm | 84% | 4.5 m/s | 4.6 |
| 2009 | 17.1°C | 15.5°C | 14.0°C | 19.1°C | 12.6°C | 111 mm | 87% | 5.6 m/s | 4 |
| 2008 🌧️ | 16.7°C | 15.5°C | 14.2°C | 19.1°C | 12.6°C | 175 mm | 89% | 5.2 m/s | 3.4 |
| 2007 | 16.4°C | 15.0°C | 13.5°C | 19.1°C | 12.1°C | 95 mm | 86% | 4.7 m/s | 4.3 |
| 2006 | 16.6°C | 15.2°C | 13.8°C | 19.5°C | 12.3°C | 101 mm | 86% | 4.7 m/s | 4.2 |
| 2005 | 16.9°C | 15.3°C | 13.6°C | 20.7°C | 11.7°C | 74 mm | 86% | 4 m/s | 4.5 |
| 2004 | 17.9°C | 16.2°C | 14.5°C | 22.5°C | 12.1°C | 167 mm | 87% | 3.9 m/s | 4.1 |
| 2003 | 18.3°C | 16.4°C | 14.5°C | 24.1°C | 11.9°C | 21 mm | 84% | 3.2 m/s | 4.7 |
| 2002 | 17.0°C | 15.3°C | 13.6°C | 19.1°C | 12.5°C | 95 mm | 87% | 3.5 m/s | 4.1 |
| 2001 | 17.0°C | 15.5°C | 14.0°C | 20.2°C | 12.3°C | 98 mm | 85% | 3.7 m/s | 4.1 |
| 2000 | 17.3°C | 15.7°C | 14.0°C | 21.1°C | 12.6°C | 103 mm | 86% | 3.7 m/s | 4.5 |
| 1999 | 17.4°C | 15.6°C | 13.8°C | 21.0°C | 11.7°C | 124 mm | 84% | 3.8 m/s | 4.1 |
| 1998 | 16.7°C | 15.1°C | 13.4°C | 21.5°C | 12.0°C | 74 mm | 86% | 4.7 m/s | 4.4 |
| 1997 | 18.8°C | 16.8°C | 14.8°C | 23.7°C | 13.0°C | 69 mm | 86% | 3.7 m/s | 4.5 |
| 1996 | 16.7°C | 15.0°C | 13.3°C | 20.2°C | 11.4°C | 85 mm | 86% | 4 m/s | 4.2 |
| 1995 🔥 | 20.5°C | 18.0°C | 15.5°C | 25.7°C | 12.7°C | 15 mm | 78% | 3.4 m/s | 5.1 |
| 1994 | 16.2°C | 14.6°C | 13.0°C | 19.8°C | 11.5°C | 97 mm | 84% | 4.4 m/s | 4.3 |
| 1993 | 15.6°C | 14.0°C | 12.3°C | 18.4°C | 10.6°C | 58 mm | 83% | 4.1 m/s | 4.5 |
| 1992 | 15.8°C | 14.4°C | 13.0°C | 18.0°C | 10.3°C | 132 mm | 83% | 5.4 m/s | 4.2 |
| 1991 | 17.6°C | 15.6°C | 13.6°C | 21.6°C | 11.7°C | 40 mm | 85% | 3.9 m/s | 4.1 |
| 1990 | 18.0°C | 16.2°C | 14.5°C | 24.9°C | 11.6°C | 55 mm | 83% | 4.4 m/s | 4.2 |
| 1989 | 16.9°C | 15.4°C | 13.8°C | 19.4°C | 12.3°C | 102 mm | 83% | 5.2 m/s | 4 |
| 1988 | 15.9°C | 14.3°C | 12.7°C | 22.3°C | 10.8°C | 96 mm | 84% | 5.3 m/s | 4 |
| 1987 | 16.0°C | 14.6°C | 13.2°C | 19.4°C | 10.5°C | 80 mm | 86% | 4 m/s | 3.6 |
| 1986 ❄️ | 14.8°C | 13.2°C | 11.6°C | 18.0°C | 9.4°C | 123 mm | 82% | 4.7 m/s | 3.7 |
| 1985 | 15.2°C | 13.8°C | 12.4°C | 18.4°C | 10.6°C | 148 mm | 86% | 6.5 m/s | 3.6 |
| 1984 | 18.9°C | 16.6°C | 14.4°C | 23.6°C | 11.3°C | 52 mm | 80% | 2.9 m/s | 4.7 |
| 1983 | 18.3°C | 16.0°C | 13.8°C | 21.6°C | 10.7°C | 69 mm | 82% | 2.9 m/s | — |
| 1982 | 16.5°C | 14.8°C | 13.1°C | 20.9°C | 11.0°C | 89 mm | 83% | 5 m/s | — |
| 1981 | 17.5°C | 15.8°C | 14.1°C | 21.4°C | 12.0°C | 38 mm | 84% | 3.3 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 17.2°C with lows near 13.8°C (mean 15.5°C), based on 45 years of NASA POWER data.
August averages 94 mm of rainfall in Bangor, about average for rainfall. The wettest on record was 175 mm in 2008.
The hottest August reached 26.4°C in 2022. The coldest dipped to 9.4°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°C. Daytime highs moved from 17.3°C to 18.2°C and overnight lows from 13.6°C to 14.7°C over the same span.
August is one of the warmer months of the year in Bangor and about average for rainfall, so plan for around 17.2°C daytime highs and 13.8°C at night.
Not quite — August is the 12th coolest month in Bangor, averaging 15.5°C.
For August in Bangor, pack light layers you can adjust through the day, with typical highs of 17.2°C and lows of 13.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 84% — quite humid.
Average wind speed in August is 4.4 m/s. The windiest August on record averaged 6.5 m/s (1985).
The wettest August on record was 2008 with 175 mm. On average, August sees 94 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 Bangor 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.
