Average temperatures, rainfall and packing tips for London, United Kingdom in September
🌡️ Avg high
19°C
🌙 Avg low
11°C
🌧️ Rainfall
~172 mm
📊 Warmth rank
#4 of 12
September in London at a glance
September in London is typically mild, with average daytime highs around 19°C and nights near 11°C. Temperature-wise it sits mid-range for London (the 4th warmest month).
September is typically the wettest month of the year in London, with around 172 mm of rain - plan around showers.
What to pack for London in September
Medium layers: long sleeves and a sweater
A light-to-medium jacket
A rain jacket or umbrella - this is one of the wetter months
London - year at a glance
HighLow · September highlighted
Is September a good time to visit London?
🧳 September is one of the most comfortable months to visit London - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.
In September, London averages a daytime high of about 19°C and a night-time low of around 11°C, based on recent historical data.
Does it rain in London in September?
September is typically the wettest month of the year in London, with around 172 mm of rain - plan around showers.
Is September a good time to visit London?
September is one of the most comfortable months to visit London - daytime temperatures sit in a pleasant range and it's a good pick for sightseeing and time outdoors.