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Greater London weather in September

Planning a journey to Greater London this September and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What is the weather like in Greater London in September?

Greater London is a region in the United Kingdom. September in Greater London generally has pleasant temperatures, with moderate precipitation.

You can expect pleasant maximum daytime temperatures of around 20°C and nighttime temperatures around 11°C in London.

September is a moderate rainy month with an average rainfall of around 54 mm in London. London enjoys a balanced 155 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

For a closer look at September's conditions in Greater London, see the map below. For a more detailed look at Greater London's yearly weather, check out our Greater London climate page.

Where to go in Greater London in September

Find the average weather conditions in September for the most popular destinations in Greater London on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Greater London

What is the weather like in September for the 5 most popular destinations in Greater London?

Average weather in London

In September London generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 11°C and moderate monthly rainfall. So on average the conditions are perfect that month.

London
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
23°C 
13°C 
204 hours 
66 mm 
12 days 
20°C 
11°C 
155 hours 
54 mm 
12 days 
October   >> October
>>  
16°C 
8°C 
113 hours 
65 mm 
14 days 
Climate in London

Average weather in Croydon

In September Croydon generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 11°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Croydon
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
23°C 
13°C 
204 hours 
69 mm 
12 days 
20°C 
11°C 
155 hours 
55 mm 
12 days 
October   >> October
>>  
16°C 
8°C 
113 hours 
66 mm 
13 days 
Climate in Croydon

Average weather in Ilford

In September Ilford generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 11°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Ilford
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
23°C 
14°C 
205 hours 
67 mm 
11 days 
20°C 
11°C 
146 hours 
52 mm 
11 days 
October   >> October
>>  
16°C 
8°C 
112 hours 
61 mm 
13 days 
Climate in Ilford

Average weather in Hounslow

In September Hounslow generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 11°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Hounslow
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
23°C 
13°C 
204 hours 
67 mm 
12 days 
20°C 
11°C 
155 hours 
54 mm 
12 days 
October   >> October
>>  
16°C 
8°C 
113 hours 
64 mm 
14 days 
Climate in Hounslow

Average weather in Harrow

In September Harrow generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 11°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Harrow
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
23°C 
13°C 
204 hours 
67 mm 
12 days 
20°C 
11°C 
155 hours 
55 mm 
12 days 
October   >> October
>>  
16°C 
8°C 
113 hours 
64 mm 
14 days 
Climate in Harrow

Is your destination not in the list? Have a look at other destinations in Greater London, in the United Kingdom.

Is September the best time to visit Greater London?

We believe that September is one of the best times to visit Greater London with overall perfect weather in London. However, the weather conditions may vary depending on your destination.

Generally speaking, June, July, August and September provide perfect weather in London. In contrast, January, February and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Greater London. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to the United Kingdom? Get detailed historical weather averages for many cities in the United Kingdom.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.