London in September

Mild and drier.

All twelve months in one grid — weather, crowds and prices, with gaps left as unknown.

No other month rates higher than September for London in this guide.

• LondonHighs around 21 °C (70 °F), lows around 12 °C (54 °F), rain on about 9 daysHighs around 70 °F (21 °C), lows around 54 °F (12 °C), rain on about 9 days
• London and the south-east, United Kingdom · London, Oxford, Cambridge, Kent, Brightonbest weather

  Mildest and driest region; summer heat waves above 30 °C (86 °F) are now common, and older Tube lines and many homes have no air conditioning.Mildest and driest region; summer heat waves above 86 °F (30 °C) are now common, and older Tube lines and many homes have no air conditioning.

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

• BBC Proms check

  Mid July to mid September (check) · Royal Albert Hall

  Evening concerts; queues for standing tickets.

• Open House London check

  A weekend in September (check) · Buildings across the city

  Free entry to many buildings; queues for the best.

Crowds · United Kingdom overall

Medium

Prices · United Kingdom overall

Medium

United Kingdom overall: Schools back, weather often settled; the best month for walking and the Highlands.

Weather, crowds and prices for any two months in London, side by side.

• A warm layer for the evenings

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