August is one of the warmer months of the year in Barnstaple, with average highs near 19.3°C and lows around 12.5°C (mean 15.9°C). It is about average for rainfall, averaging 80 mm of rainfall and 85% relative humidity across the period.
August is one of the warmer months of the year in Barnstaple. Across 45 years of records, the warmest August in Barnstaple was 1995 — when the month averaged 18.4°C — while the coldest was 1986 at 13.3°C. Typical August days reach 19.3°C with nights near 12.5°C. The long-term trend is warming, about 0.2°C per decade.
August is about average for rainfall in Barnstaple, averaging 80 mm of rainfall. The wettest August on record was 2015 with 171 mm, while the driest was 1995 at 12 mm.
Relative humidity in Barnstaple during August averages 85%. The most humid August was 2008 at 88%, and the least humid was 1995 at 78%.
August receives about 4.6 kWh/m²/day of solar energy in Barnstaple. The sunniest August was 1995 at 5.3 kWh/m²/day, and the cloudiest was 2008 at 3.7.
Average wind speed in Barnstaple during August is 3.4 m/s. The windiest August was 1985 at 4.7 m/s, while the calmest was 1981 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.4°C | 16.0°C | 15.9°C | 15.6°C | 16.7°C | +1.3°C |
| Avg High | 18.9°C | 19.6°C | 19.2°C | 18.8°C | 20.3°C | +1.4°C |
| Avg Low | 11.9°C | 12.5°C | 12.6°C | 12.4°C | 13.2°C | +1.3°C |
| Avg Rain | 67 mm | 78 mm | 75 mm | 103 mm | 69 mm | +2 mm |
August temperatures in Barnstaple have risen by about 0.9°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 7.5°C (1986) to a record high of 29.7°C (1990).
Rainfall in August is about average for rainfall, averaging 80 mm, with a wettest year of 171 mm.
One of the best times to visit Barnstaple
August is one of the best times to visit Barnstaple. Expect days averaging 19.3°C and nights around 12.5°C (mean 15.9°C) — warmer than Barnstaple's yearly average — with moderate rainfall (80 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 | 21.0°C | 17.2°C | 13.4°C | 26.8°C | 10.5°C | 49 mm | 82% | 3.3 m/s | 4.8 |
| 2024 | 19.6°C | 16.2°C | 12.9°C | 24.1°C | 10.4°C | 62 mm | 86% | 3.8 m/s | 4.4 |
| 2023 | 19.5°C | 16.2°C | 12.9°C | 22.8°C | 10.8°C | 86 mm | 87% | 3.6 m/s | 4.4 |
| 2022 | 22.4°C | 18.1°C | 13.9°C | 28.8°C | 9.8°C | 32 mm | 79% | 2.7 m/s | 5.2 |
| 2021 | 19.1°C | 15.6°C | 12.1°C | 21.4°C | 9.5°C | 55 mm | 87% | 3.3 m/s | 4.5 |
| 2020 | 20.0°C | 16.9°C | 13.8°C | 27.0°C | 8.8°C | 128 mm | 86% | 3.6 m/s | 4.2 |
| 2019 | 19.5°C | 16.3°C | 13.0°C | 23.8°C | 10.7°C | 101 mm | 86% | 3.8 m/s | 4.8 |
| 2018 | 19.7°C | 16.3°C | 12.9°C | 24.5°C | 8.4°C | 101 mm | 85% | 3.3 m/s | 4.2 |
| 2017 | 18.3°C | 15.3°C | 12.2°C | 22.7°C | 10.2°C | 84 mm | 86% | 3.4 m/s | 4.5 |
| 2016 | 19.5°C | 16.2°C | 12.8°C | 23.2°C | 9.9°C | 87 mm | 87% | 3.7 m/s | 4.6 |
| 2015 🌧️ | 18.2°C | 14.9°C | 11.6°C | 21.8°C | 9.5°C | 171 mm | 86% | 3.4 m/s | 4.5 |
| 2014 | 17.7°C | 14.7°C | 11.6°C | 20.5°C | 7.8°C | 112 mm | 83% | 3.9 m/s | 4.9 |
| 2013 | 19.7°C | 16.2°C | 12.7°C | 24.4°C | 10.5°C | 75 mm | 85% | 3.3 m/s | 4.7 |
| 2012 | 18.7°C | 15.9°C | 13.1°C | 22.9°C | 8.6°C | 119 mm | 87% | 3.8 m/s | 4.3 |
| 2011 | 17.7°C | 14.7°C | 11.7°C | 20.7°C | 9.1°C | 86 mm | 85% | 3.2 m/s | 4.5 |
| 2010 | 18.5°C | 15.2°C | 12.0°C | 22.2°C | 8.0°C | 97 mm | 86% | 3.8 m/s | 4.6 |
| 2009 | 18.9°C | 15.8°C | 12.8°C | 21.5°C | 10.4°C | 61 mm | 87% | 3.8 m/s | 4.4 |
| 2008 | 18.2°C | 15.5°C | 12.9°C | 21.6°C | 8.8°C | 133 mm | 88% | 4.2 m/s | 3.7 |
| 2007 | 18.7°C | 15.2°C | 11.6°C | 22.3°C | 9.4°C | 72 mm | 85% | 3.5 m/s | 4.8 |
| 2006 | 18.5°C | 15.6°C | 12.8°C | 22.4°C | 10.3°C | 56 mm | 85% | 3.8 m/s | 4.7 |
| 2005 | 19.1°C | 15.5°C | 11.9°C | 22.6°C | 8.5°C | 53 mm | 85% | 3.1 m/s | 5 |
| 2004 | 19.5°C | 16.4°C | 13.2°C | 23.8°C | 9.7°C | 134 mm | 86% | 3.4 m/s | 4.7 |
| 2003 | 21.2°C | 17.3°C | 13.3°C | 26.1°C | 8.9°C | 36 mm | 84% | 2.6 m/s | 4.8 |
| 2002 | 18.9°C | 15.6°C | 12.3°C | 20.7°C | 10.3°C | 51 mm | 87% | 2.8 m/s | 4.5 |
| 2001 | 19.2°C | 15.9°C | 12.6°C | 22.6°C | 9.6°C | 80 mm | 87% | 3.3 m/s | 4.3 |
| 2000 | 19.3°C | 16.1°C | 12.8°C | 23.2°C | 10.4°C | 75 mm | 86% | 3.2 m/s | 4.4 |
| 1999 | 19.0°C | 15.9°C | 12.8°C | 23.4°C | 9.3°C | 153 mm | 87% | 2.9 m/s | 4.5 |
| 1998 | 19.0°C | 15.2°C | 11.5°C | 23.5°C | 9.1°C | 45 mm | 86% | 3.3 m/s | 4.9 |
| 1997 | 21.0°C | 17.8°C | 14.7°C | 24.5°C | 11.8°C | 132 mm | 87% | 2.8 m/s | 4 |
| 1996 | 18.7°C | 15.1°C | 11.5°C | 24.2°C | 9.5°C | 81 mm | 85% | 3.4 m/s | 4.5 |
| 1995 🔥 | 22.9°C | 18.4°C | 14.0°C | 27.3°C | 10.1°C | 12 mm | 78% | 2.8 m/s | 5.3 |
| 1994 | 18.7°C | 15.5°C | 12.2°C | 21.7°C | 8.1°C | 94 mm | 85% | 3.5 m/s | 4.4 |
| 1993 | 17.8°C | 14.3°C | 10.8°C | 20.4°C | 7.8°C | 43 mm | 84% | 3.1 m/s | 4.8 |
| 1992 | 18.0°C | 15.0°C | 11.9°C | 20.8°C | 8.7°C | 142 mm | 84% | 4.1 m/s | 4.3 |
| 1991 | 20.1°C | 16.1°C | 12.2°C | 23.1°C | 9.4°C | 27 mm | 84% | 3.1 m/s | 4.6 |
| 1990 | 20.8°C | 17.0°C | 13.2°C | 29.7°C | 10.6°C | 47 mm | 82% | 3.2 m/s | 4.6 |
| 1989 | 19.7°C | 16.0°C | 12.3°C | 22.7°C | 9.0°C | 50 mm | 82% | 3.6 m/s | 4.9 |
| 1988 | 17.9°C | 14.6°C | 11.2°C | 24.2°C | 8.5°C | 76 mm | 85% | 3.6 m/s | 4.4 |
| 1987 | 19.0°C | 15.5°C | 12.0°C | 23.6°C | 8.1°C | 31 mm | 84% | 3.1 m/s | 4.6 |
| 1986 ❄️ | 16.4°C | 13.3°C | 10.2°C | 19.9°C | 7.5°C | 129 mm | 84% | 3.5 m/s | 4.1 |
| 1985 | 17.1°C | 14.3°C | 11.5°C | 21.6°C | 9.1°C | 129 mm | 86% | 4.7 m/s | 4.3 |
| 1984 | 20.8°C | 16.9°C | 13.1°C | 24.9°C | 9.2°C | 54 mm | 82% | 2.7 m/s | 4.8 |
| 1983 | 20.8°C | 16.7°C | 12.6°C | 24.8°C | 8.8°C | 30 mm | 83% | 2.8 m/s | — |
| 1982 | 18.2°C | 15.1°C | 12.1°C | 23.3°C | 9.1°C | 69 mm | 86% | 3.9 m/s | — |
| 1981 | 19.9°C | 16.1°C | 12.2°C | 23.8°C | 8.4°C | 36 mm | 85% | 2.5 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 19.3°C with lows near 12.5°C (mean 15.9°C), based on 45 years of NASA POWER data.
August averages 80 mm of rainfall in Barnstaple, about average for rainfall. The wettest on record was 171 mm in 2015.
The hottest August reached 29.7°C in 1990. The coldest dipped to 7.5°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.9°C. Daytime highs moved from 19.4°C to 20.3°C and overnight lows from 12.3°C to 13°C over the same span.
August is one of the warmer months of the year in Barnstaple and about average for rainfall, so plan for around 19.3°C daytime highs and 12.5°C at night.
Not quite — August is the 12th coolest month in Barnstaple, averaging 15.9°C.
For August in Barnstaple, pack light layers you can adjust through the day, with typical highs of 19.3°C and lows of 12.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 85% — quite humid.
Average wind speed in August is 3.4 m/s. The windiest August on record averaged 4.7 m/s (1985).
The wettest August on record was 2015 with 171 mm. On average, August sees 80 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 Barnstaple 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.
