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London in September: weather & travel advice

London in September is especially suited to city breaks and active holidays and hiking. Days are around 20 °C (mild). With about 8 rainy days it is moderate.

Tower Bridge in LondonLondon · SeptemberPhoto: Colin · CC BY-SA 4.0

Climate facts

Day
20 °C
Night
10 °C
Rainy days
8 rainy days
Sun
4 h/day
Humidity
81 %

Suitability by travel type

BeachLimited57/100
City breakExcellent89/100
ActiveExcellent82/100
FamilyLimited62/100

In favour

  • No particular highlights.

To consider

  • High humidity (81 %)

All months at a glance

JanUnsuitable28FebUnsuitable35MarUnsuitable41AprLimited51MayLimited62JunGood77JulExcellent83AugExcellent81SepGood70OctLimited47NovUnsuitable32DecUnsuitable28
Daytime temperature°C
7
J
7
F
10
M
14
A
17
M
20
J
23
J
22
A
20
S
15
O
10
N
7
D
Rainy daysdays
11
J
9
F
9
M
9
A
9
M
8
J
8
J
8
A
8
S
10
O
11
N
11
D

Similar destinations in September

Tenerife · SeptemberGran Canaria · SeptemberFuerteventura · SeptemberLa Palma · September

Frequently asked questions

How warm is London in September?

Daytime highs average around 20 °C, with nights around 10 °C.

Does it rain a lot in London in September?

On the long-term average, expect about 8 rainy days.

When is the best time to visit London?

The most favourable months are usually the ones highlighted on the overview page. Values are historical averages, not a forecast.

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