West Sussex, United Kingdom Weather

  1. West Sussex, United Kingdom Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in West Sussex over the next 12 hours
  7. Temperature and possibility of rain in West Sussex in the coming days
  8. Rainfall in West Sussex in the coming days
  9. West Sussex Weather Summary
  10. Weather averages by month
  11. West Sussex's weather
  12. Frequently asked questions
  13. Comments
West Sussex, Weather
(Photo by Viktor Forgacs on Unsplash)

Current conditions

Updated:
12°C
53.6°F
°C °F

Condition: Overcast

Pressure: 1,003 hPa

Feel like: 9 °C

Temperature: 12°C

Cloud: 100%

Humidity: 84%

Wind: SW - 23 km/h

Visibility: 23.04 km

Weather forecast

Wed
10 Dec
6°C / 12°C
Overcast
Thu
11 Dec
6°C / 10°C
Slight Rain
Fri
12 Dec
5°C / 11°C
Slight Rain
Sat
13 Dec
8°C / 11°C
Slight Rain
Sun
14 Dec
10°C / 11°C
Moderate Rain
Hourly forecast today:
19:00 PM
9° / 12°
9° / 12°
Overcast
84% 41 km/h
20:00 PM
9° / 11°
9° / 11°
Overcast
83% 38 km/h
21:00 PM
9° / 11°
9° / 11°
Overcast
86% 31 km/h
22:00 PM
9° / 11°
9° / 11°
Overcast
87% 29 km/h
23:00 PM
9° / 11°
9° / 11°
Overcast
89% 29 km/h
00:00 AM
9° / 11°
9° / 11°
Overcast
89% 27 km/h
01:00 AM
9° / 11°
9° / 11°
Overcast
90% 28 km/h
02:00 AM
10° / 11°
10° / 11°
Overcast
91% 30 km/h
03:00 AM
10° / 11°
10° / 11°
Overcast
92% 31 km/h
04:00 AM
10° / 11°
10° / 11°
Overcast
91% 30 km/h
05:00 AM
9° / 11°
9° / 11°
Overcast
90% 30 km/h

30 Day Averages and Extremes

  • Average high 10.2°C
  • Average low 6.47°C
  • Hottest day 13°C (27 November 2025)
  • Coldest day 0°C (26 November 2025)
  • Average humidity 86.37%
  • Days with precipitation 27 days
  • Highest precipitation 63 mm (09 December 2025)

Yesterday's Data

  • Max: 13°C
  • Min: 11°C
  • Total Precipitation: 3 mm

Temperature and possibility of rain in West Sussex over the next 12 hours

Temperature and possibility of rain in West Sussex in the coming days

Rainfall in West Sussex in the coming days

West Sussex Climate Summary

West Sussex features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 11.97ºC (53.55ºF), which is about 1.22% higher than the national average for United Kingdom. Annually, the city experiences approximately 83.5 millimeters (3.29 inches) of rainfall, spread across 157.83 rainy days, accounting for 43.24% of the year.

Longitude 50.9280143
Latitude -0.4617075
Yearly high temperature 13.61ºC (56.5ºF)
Yearly low temperature 8.78ºC (47.8ºF)
Hottest month July 19.96ºC (67.93ºF)
Coldest month January 4.13ºC (39.43ºF)
Yearly precip 83.5mm (3.29in)
Days with rainfall 157.83 days (43.24%)
Driest month April (80.14%)
Wettest month October (81.09%)

Weather averages by month

Month High / Low (°C) Rain
January 7.72° / 4.13° 15.82 days
February 7.78° / 4.13° 14.09 days
March 9.86° / 5.03° 10.91 days
April 12.42° / 6.56° 9.73 days
May 14.81° / 8.96° 11.64 days
June 17.59° / 11.6° 12.18 days
July 19.96° / 13.87° 12.91 days
August 19.84° / 14.32° 12.91 days
September 18.22° / 12.87° 11.18 days
October 15.01° / 10.65° 14.73 days
November 11.19° / 7.58° 16.55 days
December 8.92° / 5.6° 15.18 days

West Sussex's weather

Frequently asked questions

1. What is the hottest month in West Sussex?

July has the highest average monthly temperature (daily mean of 19.96ºC) and January are the coolest (daily mean of 4.13ºC).

2. What should I wear in West Sussex today?

For today's cool weather in West Sussex, with temperatures between 10ºC to 13ºC (50.0ºF to 55.4ºF), you should consider wearing:
- Knit hat (optional for cooler mornings)
- Long-sleeve top or shirt
- Casual shoes or sneakers
- Light scarf or wrap

Temperature

Early
10°C / 12°C
Morning
9°C / 12°C
Afternoon
11°C / 13°C
Evening
9°C / 11°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 443
  • CO 113
  • NH3 0
  • NO2 3
  • O3 67
  • PM10 11
  • PM25 4
  • SO2 0
  • CH4 1,376

Sunrise / Sunset

07:52
15:55