London in September 2027 — Weather, Events & Things to Do
The savvy traveller's month: summer warmth, autumn prices, Open House. Average highs of 20°C, moderate crowds and moderate prices.
Temperature
20° / 11°C
20° / 11°C
Rain
10 days
10 days
Crowds
Moderate
Moderate
Prices
Moderate
Moderate
Things to do in September
- Open House Festival — explore the current programme of buildings and book where required
- Totally Thames festival along the river all month
- London Fashion Week and Design Festival
- Warm parks without the August crowds
Insider tip: Check Open House's current booking and ballot dates; participating buildings and entry arrangements vary by edition.
What to pack
Layers, Light jacket, Umbrella, Walking shoes
Common questions
Is September a good time to visit London?
The savvy traveller's month: summer warmth, autumn prices, Open House.
What is London weather like in September?
Early autumn. Still pleasant. Fewer tourists, great deals. Average high 20°C and low 11°C.
What should I pack for London in September?
Layers, Light jacket, Umbrella, Walking shoes