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:
15°C
59.0°F
°C °F

Condition: Overcast

Pressure: 1,016 hPa

Feel like: 15 °C

Temperature: 15°C

Cloud: 100%

Humidity: 80%

Wind: WNW - 6 km/h

Visibility: 20.86 km

Weather forecast

Sat
26 Sep
12°C / 20°C
Moderate Drizzle
Sun
27 Sep
10°C / 19°C
Moderate Drizzle
Mon
28 Sep
13°C / 24°C
Overcast
Tue
29 Sep
16°C / 21°C
Moderate Drizzle
Wed
30 Sep
12°C / 18°C
Drizzle
Hourly forecast today:
22:00 PM
12° / 15°
12° / 15°
Overcast
80% 16 km/h
23:00 PM
11° / 14°
11° / 14°
Partly Cloudy
85% 13 km/h
00:00 AM
11° / 15°
11° / 15°
Overcast
78% 14 km/h
01:00 AM
11° / 15°
11° / 15°
Overcast
75% 21 km/h
02:00 AM
11° / 15°
11° / 15°
Overcast
79% 20 km/h
03:00 AM
10° / 14°
10° / 14°
Overcast
79% 21 km/h
04:00 AM
10° / 12°
10° / 12°
Overcast
85% 16 km/h
05:00 AM
9° / 11°
9° / 11°
Overcast
83% 15 km/h
06:00 AM
7° / 10°
7° / 10°
Overcast
85% 12 km/h
07:00 AM
8° / 11°
8° / 11°
Overcast
81% 10 km/h
08:00 AM
8° / 13°
8° / 13°
Overcast
74% 16 km/h

30 Day Averages and Extremes

  • Average high 18.5°C
  • Average low 10.67°C
  • Hottest day 24°C (24 September 2026)
  • Coldest day 0°C (08 October 2026)
  • Average humidity 74.77%
  • Days with precipitation 20 days
  • Highest precipitation 41 mm (29 September 2026)

Yesterday's Data

  • Max: 24°C
  • Min: 9°C
  • Total Precipitation: 0 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 mild weather in West Sussex, with temperatures between 16ºC to 19ºC (60.8ºF to 66.2ºF), consider wearing:
- Sun hat (if spending time outdoors)
- Scarf (optional)
- Comfortable jeans or slacks
- Cotton socks

Temperature

Early
10°C / 10°C
Morning
14°C / 16°C
Afternoon
13°C / 24°C
Evening
12°C / 16°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 443
  • CO 182
  • NH3 3
  • NO2 12
  • O3 59
  • PM10 17
  • PM25 15
  • SO2 1
  • CH4 1,413

Sunrise / Sunset

05:54
17:51