What to Wear in London in September
Still mild, lovely month. Expect 13°–20°C with 9 rainy days on average.
☀️
High
20°C
🌙
Low
13°C
🌧️
Rain days
9
🌡️
Feel
Mild & Comfortable
Typical outfit
~17°C average
About September in London
September in London typically brings still mild, lovely month. With averages of 13°–20°C, the conditions call for ideal sightseeing weather! layer smartly — mornings and evenings will be cooler.
Mornings feel cool but afternoons can warm up significantly. A trench or jacket over a lighter outfit is ideal.
September in other cities