London
September
Weather in London for September 2027
Your guide to London weather in September - trends and predictions
In general, the average temperature in London at the beginning of September is 25 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.9 °C by the end of September.
With an average of 5 rainy days, London experiences minimal rainfall in September.
Is September a good time to visit London? check out the best time to travel to London page.
✨ Is September a good time to visit London? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
25
Dry days
5
Rainy days
0
Snow days
23°/12°
Temperatures
19 km/h
Avg max wind
73 %
Avg humidity
London Weather September
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Temperatures trend during September in London
See the weather trend as well as the moving average line
September weather in London day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 26° /13° | 0.2 mm | 6 | |
| 2 Sept. |  Moderate rain | 25° /13° | 17.2 mm | 5 | |
| 3 Sept. | Moderate rain | 28° /13° | 23.1 mm | 5 | |
| 4 Sept. |  Light rain | 27° /14° | 6.5 mm | 6 | |
| 5 Sept. |  Sunny | 27° /14° | 0 mm | 7 | |
| 6 Sept. | Light rain | 23° /13° | 4.5 mm | 6 | |
| 7 Sept. |  Light rain shower | 20° /11° | 2.3 mm | 5 | |
| 8 Sept. |  Overcast | 21° /10° | 0 mm | 4 | |
| 9 Sept. | Light rain | 25° /12° | 2.7 mm | 4 | |
| 10 Sept. | Overcast | 24° /13° | 0.1 mm | 6 | |
| 11 Sept. | Overcast | 25° /12° | 0.1 mm | 6 | |
| 12 Sept. | Light rain | 25° /12° | 3.9 mm | 6 | |
| 13 Sept. | Overcast | 24° /13° | 0.1 mm | 5 | |
| 14 Sept. |  Mist | 24° /10° | 0 mm | 6 | |
| 15 Sept. | Partly cloudy | 26° /12° | 0.9 mm | 5 | |
| 16 Sept. | Mist | 26° /13° | 0.6 mm | 5 | |
| 17 Sept. | Patchy light drizzle | 23° /14° | 0.6 mm | 4 | |
| 18 Sept. | Fog | 24° /11° | 0 mm | 5 | |
| 19 Sept. | Fog | 21° /11° | 0.6 mm | 4 | |
| 20 Sept. | Overcast | 23° /10° | 0 mm | 4 | |
| 21 Sept. | Light rain | 21° /12° | 3.5 mm | 4 | |
| 22 Sept. | Moderate rain | 23° /13° | 13.6 mm | 5.7 | |
| 23 Sept. | Moderate rain | 21° /13° | 18.8 mm | 5 | |
| 24 Sept. | Patchy rain possible | 21° /13° | 2.1 mm | 5 | |
| 25 Sept. | Light rain | 22° /12° | 2.7 mm | 5 | |
| 26 Sept. | Overcast | 22° /12° | 0 mm | 4 | |
| 27 Sept. | Overcast | 22° /11° | 0 mm | 5 | |
| 28 Sept. | Overcast | 20° /12° | 0.8 mm | 4 | |
| 29 Sept. | Patchy rain possible | 23° /12° | 0 mm | 5 | |
| 30 Sept. | Mist | 23° /13° | 0.5 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for London in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the London forecast closer to your planned date for the most up-to-date weather information.
Change Month
London in September - FAQ
What are the expected maximum and minimum temperatures in London during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in London during September?
Significant rainfall exceeding 105.2 mm is expected in London during September, occurring over more than 5 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in London during September?
The average wind speed in London during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in London
Explore the daily rainfall trends and prepare for Londons September weather 💧
Typically, London has 5 rainy days in September with a total of 105.2 mm of rainfall.
UV exposure in London during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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