August is one of the warmer months of the year in Bicester, with average highs near 21.8°C and lows around 11.6°C (mean 16.7°C). It is about average for rainfall, averaging 59 mm of rainfall and 77% relative humidity across the period.
August is one of the warmer months of the year in Bicester. Across 45 years of records, the warmest August in Bicester was 2022 — when the month averaged 19.6°C — while the coldest was 1986 at 13.8°C. Typical August days reach 21.8°C with nights near 11.6°C. The long-term trend is warming, about 0.2°C per decade.
August is about average for rainfall in Bicester, averaging 59 mm of rainfall. The wettest August on record was 2004 with 131 mm, while the driest was 1995 at 6 mm.
Relative humidity in Bicester during August averages 77%. The most humid August was 1999 at 82%, and the least humid was 2022 at 68%.
August receives about 4.3 kWh/m²/day of solar energy in Bicester. The sunniest August was 1995 at 5.2 kWh/m²/day, and the cloudiest were 1986 and 2008 at 3.6.
Average wind speed in Bicester during August is 3 m/s. The windiest August was 1985 at 4.2 m/s, while the calmest was 2002 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.0°C | 17.0°C | 16.9°C | 16.3°C | 17.7°C | +1.7°C |
| Avg High | 21.0°C | 22.3°C | 21.7°C | 21.3°C | 23.1°C | +2.1°C |
| Avg Low | 10.9°C | 11.6°C | 11.9°C | 11.4°C | 12.3°C | +1.4°C |
| Avg Rain | 53 mm | 55 mm | 63 mm | 71 mm | 46 mm | -6 mm |
August temperatures in Bicester have risen by about 1.2°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 5°C (2014) to a record high of 34.3°C (1990).
Rainfall in August is about average for rainfall, averaging 59 mm, with a wettest year of 131 mm.
One of the best times to visit Bicester
August is one of the best times to visit Bicester. Expect days averaging 21.8°C and nights around 11.6°C (mean 16.7°C) — warmer than Bicester's yearly average — with moderate rainfall (59 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 | 24.2°C | 18.2°C | 12.2°C | 31.1°C | 9.1°C | 19 mm | 69% | 3.1 m/s | 4.6 |
| 2024 | 22.8°C | 17.3°C | 11.9°C | 30.0°C | 8.1°C | 49 mm | 77% | 3.3 m/s | 4.3 |
| 2023 | 21.8°C | 16.6°C | 11.4°C | 25.9°C | 8.6°C | 57 mm | 79% | 3 m/s | 4.3 |
| 2022 🔥 | 25.9°C | 19.6°C | 13.3°C | 32.8°C | 8.3°C | 24 mm | 68% | 2.6 m/s | 4.9 |
| 2021 | 20.7°C | 16.1°C | 11.6°C | 22.9°C | 9.0°C | 38 mm | 81% | 3 m/s | 3.8 |
| 2020 | 23.2°C | 18.3°C | 13.3°C | 32.0°C | 7.3°C | 90 mm | 77% | 3.4 m/s | 4.1 |
| 2019 | 22.7°C | 17.5°C | 12.3°C | 30.7°C | 8.9°C | 57 mm | 76% | 3.5 m/s | 4.6 |
| 2018 | 22.7°C | 17.3°C | 11.9°C | 29.1°C | 6.9°C | 69 mm | 76% | 2.9 m/s | 4.2 |
| 2017 | 20.0°C | 15.4°C | 10.8°C | 25.0°C | 7.4°C | 82 mm | 81% | 2.9 m/s | 4.2 |
| 2016 | 22.2°C | 17.1°C | 12.0°C | 28.4°C | 8.4°C | 54 mm | 78% | 3.3 m/s | 4.7 |
| 2015 | 21.1°C | 16.1°C | 11.2°C | 28.0°C | 9.1°C | 92 mm | 79% | 3.1 m/s | 3.7 |
| 2014 | 19.7°C | 14.8°C | 10.0°C | 23.9°C | 5.0°C | 78 mm | 78% | 3.4 m/s | 4.1 |
| 2013 | 22.1°C | 16.9°C | 11.7°C | 30.2°C | 8.5°C | 41 mm | 78% | 3 m/s | 4.5 |
| 2012 | 21.1°C | 16.6°C | 12.0°C | 26.7°C | 5.6°C | 72 mm | 81% | 3.1 m/s | 4.1 |
| 2011 | 21.0°C | 16.0°C | 11.0°C | 27.1°C | 7.9°C | 60 mm | 75% | 2.9 m/s | 4 |
| 2010 | 20.4°C | 15.6°C | 10.8°C | 24.3°C | 6.4°C | 107 mm | 79% | 3.3 m/s | 3.8 |
| 2009 | 21.7°C | 16.9°C | 12.1°C | 26.3°C | 8.3°C | 60 mm | 80% | 3.3 m/s | 4.1 |
| 2008 | 21.0°C | 16.6°C | 12.3°C | 25.5°C | 7.1°C | 87 mm | 81% | 3.7 m/s | 3.6 |
| 2007 | 20.6°C | 15.7°C | 10.7°C | 26.2°C | 8.1°C | 42 mm | 80% | 3.2 m/s | 4.5 |
| 2006 | 21.0°C | 16.4°C | 11.7°C | 27.4°C | 8.6°C | 65 mm | 77% | 3.3 m/s | 4.1 |
| 2005 | 22.1°C | 16.6°C | 11.1°C | 30.2°C | 8.3°C | 50 mm | 76% | 2.9 m/s | 4.6 |
| 2004 🌧️ | 22.1°C | 17.5°C | 12.8°C | 28.9°C | 8.3°C | 131 mm | 81% | 2.8 m/s | 4.2 |
| 2003 | 24.3°C | 18.6°C | 12.8°C | 33.1°C | 5.9°C | 16 mm | 75% | 2.4 m/s | 4.7 |
| 2002 | 21.8°C | 17.0°C | 12.2°C | 27.9°C | 9.3°C | 52 mm | 81% | 2.2 m/s | 4 |
| 2001 | 21.6°C | 16.8°C | 11.9°C | 27.3°C | 8.6°C | 80 mm | 81% | 2.7 m/s | 4.1 |
| 2000 | 21.1°C | 16.4°C | 11.6°C | 25.0°C | 8.7°C | 53 mm | 80% | 2.6 m/s | 4.4 |
| 1999 | 20.5°C | 16.0°C | 11.5°C | 28.5°C | 6.7°C | 113 mm | 82% | 2.5 m/s | 4.1 |
| 1998 | 21.3°C | 15.8°C | 10.3°C | 27.3°C | 6.7°C | 33 mm | 79% | 3 m/s | 4.9 |
| 1997 | 24.4°C | 19.2°C | 14.1°C | 29.6°C | 10.2°C | 105 mm | 78% | 2.7 m/s | 4.1 |
| 1996 | 21.8°C | 16.6°C | 11.3°C | 29.4°C | 7.8°C | 58 mm | 75% | 3 m/s | 4.4 |
| 1995 | 25.1°C | 18.8°C | 12.5°C | 31.2°C | 7.7°C | 6 mm | 70% | 2.9 m/s | 5.2 |
| 1994 | 20.9°C | 16.1°C | 11.2°C | 26.7°C | 7.2°C | 41 mm | 77% | 3.2 m/s | 4.3 |
| 1993 | 20.1°C | 14.8°C | 9.5°C | 24.5°C | 6.0°C | 42 mm | 76% | 3 m/s | 4.5 |
| 1992 | 20.4°C | 15.7°C | 10.9°C | 26.3°C | 7.9°C | 102 mm | 77% | 3.8 m/s | 4 |
| 1991 | 23.6°C | 17.7°C | 11.8°C | 27.4°C | 7.8°C | 17 mm | 74% | 2.8 m/s | 4.7 |
| 1990 | 24.8°C | 18.8°C | 12.7°C | 34.3°C | 9.0°C | 33 mm | 70% | 2.9 m/s | 4.6 |
| 1989 | 22.7°C | 17.0°C | 11.2°C | 27.6°C | 7.2°C | 38 mm | 72% | 3.4 m/s | 4.8 |
| 1988 | 20.3°C | 15.2°C | 10.2°C | 26.7°C | 6.7°C | 38 mm | 78% | 3.3 m/s | 4.2 |
| 1987 | 20.8°C | 15.9°C | 10.9°C | 27.8°C | 6.0°C | 40 mm | 79% | 2.7 m/s | 3.8 |
| 1986 ❄️ | 18.4°C | 13.8°C | 9.3°C | 21.2°C | 5.6°C | 111 mm | 78% | 3.3 m/s | 3.6 |
| 1985 | 18.9°C | 14.6°C | 10.3°C | 24.0°C | 7.9°C | 73 mm | 81% | 4.2 m/s | 3.9 |
| 1984 | 23.2°C | 17.8°C | 12.5°C | 28.1°C | 6.7°C | 50 mm | 74% | 2.4 m/s | 4.6 |
| 1983 | 22.4°C | 17.0°C | 11.6°C | 27.7°C | 6.3°C | 23 mm | 78% | 2.6 m/s | — |
| 1982 | 20.4°C | 15.7°C | 11.0°C | 24.8°C | 6.7°C | 51 mm | 79% | 3.3 m/s | — |
| 1981 | 21.9°C | 16.7°C | 11.4°C | 25.9°C | 7.1°C | 51 mm | 79% | 2.3 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 21.8°C with lows near 11.6°C (mean 16.7°C), based on 45 years of NASA POWER data.
August averages 59 mm of rainfall in Bicester, about average for rainfall. The wettest on record was 131 mm in 2004.
The hottest August reached 34.3°C in 1990. The coldest dipped to 5°C in 2014.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.2°C. Daytime highs moved from 21.4°C to 23.1°C and overnight lows from 11.4°C to 12.1°C over the same span.
August is one of the warmer months of the year in Bicester and about average for rainfall, so plan for around 21.8°C daytime highs and 11.6°C at night.
Not quite — August is the 11th coolest month in Bicester, averaging 16.7°C.
For August in Bicester, pack light layers you can adjust through the day, with typical highs of 21.8°C and lows of 11.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 77% — quite humid.
Average wind speed in August is 3 m/s. The windiest August on record averaged 4.2 m/s (1985).
The wettest August on record was 2004 with 131 mm. On average, August sees 59 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 Bicester 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.
