Bristol Weather in September
Bristol in September sees pleasant daytime temperatures of 19°C (66°F) and nighttime lows of 11°C (52°F). Rainfall is fairly high this month at around 64 mm (2.5 in), so pack a rain jacket to stay dry.
Rainfall in Bristol in September
You can expect rain on roughly 14 days based on historical data, averaging 64 mm (2.5 in) for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Bristol in September
In September, expect pleasant temperatures in Bristol, with highs of 19°C (66°F) and lows of 11°C (52°F) at night. Conditions are often most pleasant around the middle of the day. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Bristol in September
The month brings about 151 hours of sunlight, offering a comfortable mix of sun and overcast.If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Bristol.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our Bristol's climate page.
Bristol Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
19°C (66°F)
Chance of Rain
45%
Precipitation
64 mm (2.5 in)
Rainy days
14 days
Sunshine
151 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Bristol typically stay consistent throughout September, with daily highs averaging around 19°C (66°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 12°C (54°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Bristol in September
Browse day-by-day weather records for Bristol spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bristol historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Bristol.
- The hottest September day on record in Bristol reached 29°C (84°F) (September 9, 2023).
- The lowest daytime temperature in September was 9°C (48°F), recorded on September 23, 2012.
- Bristol registered its coldest September night on September 24, 2003, with temperatures dropping to 3°C (37°F).
Best Places in the United Kingdom in September
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in September →
perfect weather
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tolerable
unpleasant
poor
What to Wear in Bristol in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Bristol in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our Bristol's climate page.
See the full Bristol climate overview or explore weather in the United Kingdom.
