West Sussex Weather in January

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

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Chichester Crawley Worthing Horley

Planning a getaway to West Sussex, the United Kingdom this January and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in West Sussex in January

West Sussex, the United Kingdom is a region in the United Kingdom. January in West Sussex generally has cold temperatures, with moderate precipitation. It's the height of winter.

Temperatures

You can expect cold maximum daytime temperatures of around 9°C (48°F) and nighttime temperatures around 5°C (41°F) in Chichester.

For specific regional insights in West Sussex, the United Kingdom, refer to the map provided below.

Precipitation

In January, precipitation varies across different areas. From moderate rainfall in East Grinstead with an average of 67 mm (2.6 in) to moderate rainfall in Selsey with 98 mm (3.9 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 January

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 January for some of the most popular destinations in West Sussex, the United Kingdom?

Temperature range in West Sussex (January)

Precipitation variation in West Sussex (January)

Chichester

In January Chichester generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 5°C (41°F) and moderate monthly rainfall. So on average the conditions are less favorable that month.

« December
January
February »
December
January
February
Max temperature
10°C (50°F)
9°C (48°F)
9°C (48°F)
Min temperature
5°C (41°F)
5°C (41°F)
4°C (39°F)
Monthly rainfall
96 mm (3.8 in)
88 mm (3.5 in)
73 mm (2.9 in)
Monthly rainy days
16 days
17 days
13 days
Weather conditions
less favorable
less favorable
less favorable
Climate in Chichester →

Crawley

In January Crawley generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 3°C (37°F) and moderate monthly rainfall. So on average the conditions are less favorable that month.

« December
January
February »
December
January
February
Max temperature
9°C (48°F)
9°C (48°F)
9°C (48°F)
Min temperature
3°C (37°F)
3°C (37°F)
3°C (37°F)
Monthly rainfall
74 mm (2.9 in)
69 mm (2.7 in)
62 mm (2.4 in)
Monthly rainy days
17 days
18 days
14 days
Weather conditions
less favorable
less favorable
less favorable
Climate in Crawley →

Worthing

In January Worthing generally has low temperatures with maximum daytime temperatures around 10°C (50°F), minimum nighttime temperatures around 5°C (41°F) and moderate monthly rainfall. So on average the conditions are less favorable that month.

« December
January
February »
December
January
February
Max temperature
11°C (52°F)
10°C (50°F)
9°C (48°F)
Min temperature
6°C (43°F)
5°C (41°F)
5°C (41°F)
Monthly rainfall
101 mm (4 in)
90 mm (3.5 in)
73 mm (2.9 in)
Monthly rainy days
17 days
18 days
14 days
Weather conditions
less favorable
less favorable
less favorable
Climate in Worthing →

Horley

In January Horley generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 3°C (37°F) and moderate monthly rainfall. So on average the conditions are less favorable that month.

« December
January
February »
December
January
February
Max temperature
9°C (48°F)
9°C (48°F)
9°C (48°F)
Min temperature
3°C (37°F)
3°C (37°F)
3°C (37°F)
Monthly rainfall
72 mm (2.8 in)
67 mm (2.6 in)
61 mm (2.4 in)
Monthly rainy days
16 days
18 days
14 days
Weather conditions
less favorable
less favorable
less favorable
Climate in Horley →

Bognor Regis

In January Bognor Regis generally has low temperatures with maximum daytime temperatures around 10°C (50°F), minimum nighttime temperatures around 5°C (41°F) and moderate monthly rainfall. So on average the conditions are less favorable that month.

« December
January
February »
December
January
February
Max temperature
11°C (52°F)
10°C (50°F)
9°C (48°F)
Min temperature
6°C (43°F)
5°C (41°F)
5°C (41°F)
Monthly rainfall
104 mm (4.1 in)
94 mm (3.7 in)
76 mm (3 in)
Monthly rainy days
16 days
17 days
13 days
Weather conditions
less favorable
less favorable
less favorable
Climate in Bognor Regis →

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

In our records: the United Kingdom January extremes

Notable January records observed across cities in the United Kingdom in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • Based on our data, the coldest January night in the United Kingdom dropped to -20°C (-4°F) in Birmingham on January 14, 1982.

Popular cities in January

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

City Weather Day temp Night temp Rainfall
Chichester 9°C (48°F) 5°C (41°F) 88 mm (3.5 in)
Crawley 9°C (48°F) 3°C (37°F) 69 mm (2.7 in)
Worthing 10°C (50°F) 5°C (41°F) 90 mm (3.5 in)
Horley 9°C (48°F) 3°C (37°F) 67 mm (2.6 in)
Bognor Regis 10°C (50°F) 5°C (41°F) 94 mm (3.7 in)
Littlehampton 10°C (50°F) 5°C (41°F) 89 mm (3.5 in)

West Sussex weather in January: frequently asked questions

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

Expect less favorable weather across West Sussex, the United Kingdom in January. The popular destination of Chichester averages 9°C (48°F) by day and 5°C (41°F) at night during this winter month.

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

Daytime temperatures in Chichester peak at roughly 9°C (48°F) in January, dropping to about 5°C (41°F) overnight.

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

Not particularly. Chichester averages just 88 mm (3.5 in) of rain in January, making it a mostly dry month for West Sussex, the United Kingdom.

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

In our opinion, January may not be the ideal time to visit West Sussex, the United Kingdom due to the typically less favorable weather in Chichester.

On average, the best time to visit West Sussex, the United Kingdom is in July and August with generally excellent weather in Chichester. In contrast, January, February, November and December tend to have less favorable weather conditions.

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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