SeasonMapBournemouth weather in September
United Kingdom
September in Bournemouth: nice, a little rain, with clean air — a great time to visit.
#6 of 12 months in Bournemouth · #875 of 1383 destinations to visit in September · comfort 73/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Bournemouth in September
Other months in Bournemouth
August in Bournemouth is the peak of everything. A good day can reach the mid-to-high 20s°C, though the monthly average high sits nearer 21, with the sea around 17°C. The forum's real subject, though, is volume: a very hot summer's day brings roughly 80,000 people to the beach, and an airshow day upwards of 250,000. Regulars advise avoiding the Pier area for crowding and parking and heading to Southbourne, Christchurch and Hengistbury Head, or Mudeford instead. Two August fixtures worth timing around: fireworks off the pier every Friday night from late July to the end of August, and the Wednesday candlelight evenings in the lower gardens.
Year-round notes are on Bournemouth's overview. Add your own note from Bournemouth's card on the map.
Bournemouth climate normals — September
| Daytime high | 20°C / 68°F | 😎 nice |
|---|---|---|
| Nighttime low | 10°C / 49°F | |
| Feels like (high) | 19°C / 66°F | |
| Sea temperature | 19°C / 66°F | 🧊 bracing |
| Rainfall | 69 mm / 2.7 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 12°C / 53°F | |
| Sunshine | 8.4 h/day | |
| Daylight | 12.6 h | |
| Wind | 23 km/h / 14 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Bournemouth in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsBeach season, English summer holidays, school holidays in 3 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Bournemouth's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherBournemouth's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Bournemouth in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Beach season
15 May – 15 Sep · usuallySea warm enoughCrowdedSeven miles of sand with lifeguards on through the summer, and the reason a hot weekend puts a hundred thousand people on the trains and the A31. The water is shallow and slow to warm.
- Holiday
English summer holidays
20 Jul – 2 SepSchool holidaysCrowdedSeven miles of sand and the whole of the South East on it in a heatwave; the seafront car parks fill by ten and the trains from Waterloo run standing. Sandbanks is the worst of it. Source ↗
- Nature
New Forest heather
1 Aug – 10 Sep · usuallyWildflowers & bloomsThe heaths north of the town go purple for about five weeks in late summer, at the same time as the ponies are at their most visible on the open ground. Source ↗
- Festival
Bournemouth Air Festival
25 Aug – 5 Sep · usuallyMajor festivalCrowdedBook earlyFour days of flying displays straight off the beach at the end of August, free to watch and drawing a crowd in the hundreds of thousands. Parking and the seafront road are the problem. Source ↗
- Nature
New Forest deer rut
20 Sep – 31 Oct · usuallyWildlife seasonThe stags roar and fight through October on the heaths north of town, best at first light. Keep well back; every year somebody does not and it goes badly. Source ↗
- Festival
Arts by the Sea
25 Sep – 10 Oct · usuallyMajor festivalOutdoor installations and street performance across the gardens and the beach for a long weekend in autumn, free and deliberately timed for after the season has emptied out. Source ↗
Nearby, and something's on
Within 300 km of Bournemouth — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Bournemouth?
Bournemouth in September — FAQ
- Is September a good time to visit Bournemouth?
- September in Bournemouth: nice, a little rain, with clean air — a great time to visit. It ranks #6 of 12 months for Bournemouth on SeasonMap's comfort score (73/100).
- What is the weather like in Bournemouth in September?
- In September, Bournemouth averages a daily high of 20.1°C and a low of 9.7°C, with about 69.3 mm of rain over roughly 11.2 rainy days.
- What is the air quality in Bournemouth in September?
- Bournemouth has a mean US Air Quality Index of about 39 in September.
Other months in Bournemouth
Compare Bournemouth in September
Warmer or cooler than Bournemouth in September
Similar destinations in Northern Europe — September
Within 300 km: Bath's Jane Austen Festival on 11–20 Sep, and St Ives' St Ives September Festival on 12–26 Sep.