West Sussex weather live forecast

Today's maximum temperature in West Sussex is expected to be 20°C. Select a day from the live weather forecast for West Sussex (Bognor Regis), UK for more weather parameters.

Thursday
18th Sep
20

16

3

2
Friday
19th Sep
22

15

12

4
Saturday
20th Sep
22

14

4

3
Sunday
21st Sep
17

11

5

3
Monday
22nd Sep
16

10

6

3

5-day weather forecast updated at 04:04 on Thursday 18th September 2025 GMT

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The 5-day weather forecast for West Sussex (Bognor Regis) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

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West Sussex weather forecast by day

Below are the detailed weather forecasts for West Sussex for the next 5 days. The forecasts shown are for Bognor Regis and may not represent the whole of West Sussex. Browse more destinations in West Sussex to view more weather forecasts.

West Sussex weather for Thursday 18th September 2025

Expect broken clouds in West Sussex with a maximum temperature of 20°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the south-west.

20
°C maximum temperature
16
°C minimum temperature
broken clouds
3
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
20
°C wind chill
28
kph wind from SW

West Sussex weather for Friday 19th September 2025

Expect scattered clouds in West Sussex with a maximum temperature of 22°C, maximum UV of 4 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south.

22
°C maximum temperature
15
°C minimum temperature
scattered clouds
12
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
12
kph wind from S

West Sussex weather for Saturday 20th September 2025

Expect isolated thunderstorms in West Sussex with a maximum temperature of 22°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a moderate breeze of 22 kph from the south-west.

22
°C maximum temperature
14
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
3
UV index (Moderate)
25
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
22
kph wind from SW

West Sussex weather for Sunday 21st September 2025

Expect mostly cloudy with light rain in West Sussex with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 30% chance of some rain and a moderate breeze of 27 kph from the south-west.

17
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
3
UV index (Moderate)
30
% chance of some rain
<5
mm of rainfall expected
17
°C wind chill
27
kph wind from SW

West Sussex weather for Monday 22nd September 2025

Expect broken clouds in West Sussex with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the north.