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Bournemouth Weather in September
Bournemouth in September sees pleasant temperatures, with highs around 19°C (66°F) and overnight lows of 13°C (55°F). Rainfall is fairly high at around 71 mm (2.8 in) on average, so pack waterproofs just in case.
Rainfall in Bournemouth in September
Historically, approximately 12 days this month are expected to have rain, averaging 71 mm (2.8 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Bournemouth in September
Daytime temperatures in Bournemouth reach 19°C (66°F) in September, dropping to 13°C (55°F) at night. This month falls in the summer season. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights cool down to 13°C (55°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Bournemouth in September
With about 149 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Bournemouth Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
19°C (66°F)
Chance of Rain
41%
Precipitation
71 mm (2.8 in)
Rainy days
12 days
Humidity
82% *
Sunshine
149 hours *
Percentage Sunshine
44% *
* Data from: Southampton, the United Kingdom (39 KM, 24 Miles).
Bournemouth Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Bournemouth - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Bournemouth typically stay consistent throughout September, with daily highs averaging around 19°C (66°F). Nights are cool, with lows typically ranging from 9°C (48°F) to 11°C (52°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 records for Bournemouth in September
Browse day-by-day weather records for Bournemouth spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bournemouth historical weather extremes in September
Based on 49 years of weather observations in Bournemouth between 1976 and 2025, these are the recorded extremes.
- The warmest day in September was on September 7, 2023, with a maximum of 29°C (84°F).
- The lowest daytime temperature in September was 11°C (52°F), recorded on September 15, 1986.
- The lowest overnight temperature recorded in September was 0°C (32°F) (September 30, 1988).
- The heaviest September precipitation occurred on September 20, 2023, when 43 mm (1.7 in) of precipitation fell.
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
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Bournemouth in September
For Bournemouth in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Bournemouth in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Bournemouth 3-Day Forecast
More climate data for Bournemouth
Temperature Rainfall Sunshine Humidity
See the full Bournemouth climate overview or explore weather in the United Kingdom.
Popular in September
Where to go in September - average daytime high across popular destinations.
London
20°C (68°F) Bath19°C (66°F) Torquay19°C (66°F) Manchester
18°C (64°F) York19°C (66°F) Edinburgh17°C (63°F) Blackpool17°C (63°F) Glasgow17°C (63°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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