Early autumn · Weather & things to do
London in September
London cools off: highs slip to 68°F (20°C), from 73°F in August, with lows of 50°F (10°C) and about 1.7 in (44 mm) of rain.
At 87/100 for comfort (the top score of the year), it's one of the best months to visit.
- Avg high
- 68°F (20°C)
- Avg low
- 50°F (10°C)
- Rain
- 1.7 in (44 mm)
- Humidity
- 81%
- Cloud cover
- 68%
- Daylight
- ~12 h 22 min
- Comfort score
- 87/100 · Great
What September feels like
Highs near 68°F (20°C) make for comfortable sightseeing weather.
Lows average 50°F (10°C).
About 1.7 in (44 mm) of rain falls in a typical year's September.
Plan around September
September is one of London's best months on the climate data.
- Last of the best-scoring months: by October, the score drops to 74/100.
- Comfort improves from 83/100 in August to 87/100.
- September sits inside the May – Sep window our London, the Cotswolds & Bath route recommends.
What to pack for September
- A warm layer for eveningslows near 50°F
- Comfortable walking shoesmost picks involve some walking
What to do in London in September
With conditions on your side, the picks below favor time outside.
Dishoom Covent Garden
Bombay café-style restaurant known for bacon naan rolls, black daal and chai.
Why now September scores 87/100 for comfort, good conditions for being outside.
Borough Market
London's oldest food market, packed with cheese, oysters, pies and street food stalls.
Why now Highs near 68°F and 1.7 in of monthly rain make this an easy outdoor pick.
Tower of London
Norman fortress on the Thames holding the Crown Jewels, led by Yeoman Warder tours.
British Museum
Two million years of human history, from the Rosetta Stone to the Parthenon sculptures. Free entry.
Hampstead Heath
Rolling heath with ponds and a city view from Parliament Hill.
Why now One to do outside while the weather is on your side.
Nearby in September
- The Cotswolds in September~76 mi · highs 65°F, 2.0 in rain · 2°C (3°F) cooler by day, about as wet
- Bath in September~96 mi · highs 66°F, 2.0 in rain · similar daytime temperatures, about as wet
- Bruges in September~146 mi · highs 67°F, 2.3 in rain · similar daytime temperatures, about as wet
- Ghent in September~169 mi · highs 67°F, 2.2 in rain · similar daytime temperatures, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
London in September: quick answers
Is September a good time to visit London?
Yes. On the climate data it's one of the best months, scoring 87/100. Expect highs of 68°F (20°C) and 1.7 in (44 mm) of rain. September is inside the May – Sep window our London, the Cotswolds & Bath route recommends.
How hot is London in September?
Average highs are 68°F (20°C) and average lows 50°F (10°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in London in September?
Not much: about 1.7 in (44 mm) of rain falls across September on average, the 2nd-driest month of the year. The annual total is about 28.0 in (710 mm).
What should I pack for London in September?
Bring a warm layer for evenings (lows near 50°F) and comfortable walking shoes (most picks involve some walking).
Routes in season in September
- London, the Cotswolds & Bath May – Sep
Planning London in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.