West Sussex Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in West Sussex, the United Kingdom in September.

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Chichester Crawley Worthing Horley

Considering a trip to West Sussex, the United Kingdom this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in West Sussex in September

West Sussex, the United Kingdom is a region in the United Kingdom. September in West Sussex generally has pleasant temperatures, with moderate precipitation. The month of September is in the summer season.

Temperatures

You can expect pleasant maximum daytime temperatures of around 19°C (66°F) and nighttime temperatures around 13°C (55°F) in Chichester.

For a closer look at conditions across West Sussex, the United Kingdom, refer to the map below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Alfold with an average of 56 mm (2.2 in) to moderate rainfall in Selsey with 75 mm (3 in).

Explore West Sussex by month

Pick a month to see the average temperature, rainfall and sunshine in West Sussex — and find the best time to visit. (based on Chichester)

January9°C (48°F) February9°C (48°F) March11°C (52°F) April13°C (55°F) May16°C (61°F) June18°C (64°F) This monthJuly21°C (70°F) August21°C (70°F) September19°C (66°F) October16°C (61°F) November13°C (55°F) December10°C (50°F)
Best Time to Visit West Sussex →

Best Places to Visit in West Sussex in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across West Sussex.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in West Sussex

What is the weather like in September for some of the most popular destinations in West Sussex, the United Kingdom?

Temperature range in West Sussex (September)

Precipitation variation in West Sussex (September)

Chichester

In September Chichester generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 13°C (55°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
21°C (70°F)
19°C (66°F)
16°C (61°F)
Min temperature
15°C (59°F)
13°C (55°F)
11°C (52°F)
Monthly rainfall
70 mm (2.8 in)
69 mm (2.7 in)
100 mm (3.9 in)
Monthly rainy days
11 days
12 days
14 days
Weather conditions
perfect
pleasant
unpleasant
Climate in Chichester →

Crawley

In September Crawley generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 11°C (52°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« August
September
October »
August
September
October
Max temperature
22°C (72°F)
20°C (68°F)
16°C (61°F)
Min temperature
14°C (57°F)
11°C (52°F)
8°C (46°F)
Monthly rainfall
72 mm (2.8 in)
58 mm (2.3 in)
73 mm (2.9 in)
Monthly rainy days
12 days
12 days
14 days
Weather conditions
perfect
perfect
tolerable
Climate in Crawley →

Worthing

In September Worthing generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
20°C (68°F)
19°C (66°F)
16°C (61°F)
Min temperature
15°C (59°F)
14°C (57°F)
11°C (52°F)
Monthly rainfall
68 mm (2.7 in)
70 mm (2.8 in)
105 mm (4.1 in)
Monthly rainy days
12 days
12 days
14 days
Weather conditions
perfect
pleasant
unpleasant
Climate in Worthing →

Horley

In September Horley generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 11°C (52°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« August
September
October »
August
September
October
Max temperature
22°C (72°F)
20°C (68°F)
16°C (61°F)
Min temperature
13°C (55°F)
11°C (52°F)
8°C (46°F)
Monthly rainfall
73 mm (2.9 in)
58 mm (2.3 in)
70 mm (2.8 in)
Monthly rainy days
12 days
12 days
14 days
Weather conditions
perfect
perfect
tolerable
Climate in Horley →

Bognor Regis

In September Bognor Regis generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
20°C (68°F)
19°C (66°F)
16°C (61°F)
Min temperature
15°C (59°F)
14°C (57°F)
11°C (52°F)
Monthly rainfall
70 mm (2.8 in)
73 mm (2.9 in)
108 mm (4.3 in)
Monthly rainy days
11 days
11 days
14 days
Weather conditions
perfect
pleasant
unpleasant
Climate in Bognor Regis →

Is your destination not in the list? Have a look at all destinations in West Sussex, in the United Kingdom.

Popular cities in September

Day & night temperatures, rainfall and average weather in West Sussex in September.

City Weather Day temp Night temp Rainfall
Chichester 19°C (66°F) 13°C (55°F) 69 mm (2.7 in)
Crawley 20°C (68°F) 11°C (52°F) 58 mm (2.3 in)
Worthing 19°C (66°F) 14°C (57°F) 70 mm (2.8 in)
Horley 20°C (68°F) 11°C (52°F) 58 mm (2.3 in)
Bognor Regis 19°C (66°F) 14°C (57°F) 73 mm (2.9 in)
Littlehampton 19°C (66°F) 14°C (57°F) 70 mm (2.8 in)

West Sussex weather in September: frequently asked questions

What is the weather like in West Sussex, the United Kingdom in September?

In September, West Sussex, the United Kingdom generally has pleasant weather conditions. Chichester sees daytime temperatures near 19°C (66°F), with nights cooling to roughly 13°C (55°F).

What is the average temperature in West Sussex, the United Kingdom in September?

Average temperatures in West Sussex, the United Kingdom during September range from a nighttime low near 13°C (55°F) to a daytime high around 19°C (66°F) in Chichester.

Does West Sussex, the United Kingdom get a lot of rain in September?

Not particularly. Chichester averages just 69 mm (2.7 in) of rain in September, making it a mostly dry month for West Sussex, the United Kingdom.

Is September a Good Time to Visit West Sussex, the United Kingdom?

Given the typically pleasant weather conditions in Chichester, September might be a good time to visit West Sussex, the United Kingdom. However, the weather conditions may vary depending on your destination.

On average, the best time to visit West Sussex, the United Kingdom is in July and August with generally perfect weather in Chichester. On the other hand, the weather in January, February, November and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in West Sussex.

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 travel conditions. Find out where to go with our weather planner.

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