Weather in Bristol in August 2025
- August is usually the hottest month of the year in Bristol;
Average weather
Average temperature in Bristol in August
Going from a maximum of +26°C during the day to a minimum of +11°C during the night, the temperature in August averages around +21°C.
The average maximum temperature goes down 27% by the end of the month, compared with the beginning of the month, from +21°C to +17°C.
Is Bristol warm or cold in August?
Bristol is typically mild in August.
Maximum temperatures go up compared to the previous month from +21°C to +21°C. The minimum temperature also goes down from +14°C to +13°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
August is the hottest month in Bristol, here is the comparison with other months:
Climate in Bristol in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +21°C | +21°C | +19°C | ||||
| Min. temperature | ||||||
| +6°C | +6°C | +3°C | ||||
| Max. temperature | ||||||
| +35°C | +34°C | +30°C | ||||
| Rainfall | ||||||
| 67 mm | 75 mm | 62 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 74% | 76% | 78% | ||||
| Air pressure | ||||||
| 1015 HPa | 1015 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 5 | 4 | 3 | ||||
| Cloudy days | ||||||
| 9 | 9 | 11 | ||||
| Rainy days | ||||||
| 16 | 17 | 15 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August typically has worse weather conditions compared to July. The temperature levels stay the same in the area of +21°C for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 67 mm to 75 mm. Humidity rises from 74% to 76%. The average wind speed doesn’t change much during August, staying around 3 m/s. The days becoming less sunny, going from 5 sunny days in July to 4 in August.
September brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Bristol is gradually decreasing during August, going from 5 m/s to 2 m/s over the course of the month.
Rain
How was the weather last August in Bristol?
Climate Change over Years
The climate in Bristol in August has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+12°C) and the highest in 2014 (+16°C). The driest year was 2011 with only 525 mm of rainfall, and the wettest year was 2020 with 2079 mm.
FAQ
Is August a good time to visit Bristol?
Can you sunbathe in Bristol in August?
Is Bristol rainy in August?
Is it sunny in Bristol in August?
Other cities in United Kingdom
Monthly weather in Bristol
Source of the data
For this page, we’ve looked at the typical weather in Bristol, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.