Month guide · London · United Kingdom
London in September
What September is really like in London: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: Colin, CC BY-SA 4.0
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Quick answer
September is one of the best months to visit London. Expect average highs of 20°C (68°F), lows of 12°C (54°F), about 8 rainy days and roughly 12.6 hours of daylight. Often settled and mild, with summer crowds thinning after the first week as schools return.
Key facts
- Average high / low
- 20°C (68°F) / 12°C (54°F)
- Rainy days
- About 8
- Daylight
- About 12.6 hours
- Crowds
- Busy
- Hotel prices
- High
Weather in September
September is the 4th-warmest month in London: days average 20°C (68°F) against a yearly average high of 16°C (61°F), and nights fall to about 12°C (54°F). Rain falls on roughly 8 of its 30 days. Compared with August (23°C (73°F)), September is cooler; by October highs drop to around 16°C (61°F).
- Sunrise (15 September)
- About 06:35
- Sunset (15 September)
- About 19:16
- Daylight
- About 12.6 hours
Autumn (September–November). Settled September weather, film and art festivals in October and autumn colour in the parks; it turns wet and dark by November, when prices ease.
Crowds and prices
On a 1–5 scale, September rates 4 for crowds (the peak is June at 5) and 4 for hotel prices (highest in June). Book accommodation early: September is one of the pricier months.
Events in September
- Open House Festival — architecture open days across the city (usually September)
- London Design Festival (usually mid-September)
- Last Night of the Proms (usually mid-September)
Dates move from year to year. Check the organiser’s site before booking travel around an event.
What to do in September
Mild, settled days suit walking, viewpoints and time outdoors.
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Religious site · City of London
St Paul's Cathedral
Sightseeing entry is paid, but services including Choral Evensong are free; arrive early to sit in the quire.
- Time needed
- 1.5–2 hours
- Cost
- Mid-priced
- Iconic
- Architecture
- Views
- History
Viewpoint · South Bank
London Eye
The 135-metre observation wheel on the South Bank turns slowly enough that a full rotation in one of its 32 glass capsules takes about 30 minutes.
- Time needed
- 1 hour including queues
- Cost
- Mid-priced
- Views
- Kids
- Couples
- Iconic
- After dark
Landmark · Tower Hill
Tower Bridge
Check the bridge-lift times on the official website; watching the roadway rise from the riverside path costs nothing.
- Time needed
- 1–1.5 hours
- Cost
- Mid-priced
- Iconic
- Views
- Kids
- Architecture
- Photo spot
Park · Hyde Park
Hyde Park and Kensington Gardens
Together the two royal parks cover about 250 hectares of central London.
- Time needed
- 2–3 hours
- Cost
- Free
- Free
- Kids
- Outdoors
- Couples
- Nature
What to pack
For highs near 20°C, lows near 12°C and 8 wet days: light layers for the day and a light jacket for the evening; a packable rain jacket for showers; comfortable walking shoes.
Is September a good time to visit London?
One of the best months to visit London, with 3 notable events on the calendar. The other best months are May–June. Compare every month.
London in other months
Questions travellers ask
+Is September a good time to visit London?
It is one of the best months to visit London. Often settled and mild, with summer crowds thinning after the first week as schools return.
+How warm is London in September?
Average highs are around 20°C (68°F) and lows around 12°C (54°F).
+Does it rain a lot in London in September?
Expect rain on about 8 days of the month.