Swansea, United Kingdom Weather

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

Current conditions

Updated:
11°C
51.8°F
°C °F

Condition: Overcast

Pressure: 999 hPa

Feel like: 6 °C

Temperature: 11°C

Cloud: 100%

Humidity: 75%

Wind: WSW - 26 km/h

Visibility: 22.22 km

Weather forecast

Wed
10 Dec
9°C / 12°C
Slight Rain
Thu
11 Dec
8°C / 11°C
Drizzle
Fri
12 Dec
6°C / 10°C
Slight Rain
Sat
13 Dec
7°C / 11°C
Slight Rain
Sun
14 Dec
11°C / 12°C
Moderate Rain
Hourly forecast today:
20:00 PM
7° / 11°
7° / 11°
Overcast
75% 58 km/h
21:00 PM
7° / 11°
7° / 11°
Overcast
75% 52 km/h
22:00 PM
8° / 11°
8° / 11°
Clear Sky
84% 46 km/h
23:00 PM
8° / 11°
8° / 11°
Overcast
82% 39 km/h
00:00 AM
8° / 11°
8° / 11°
Overcast
84% 41 km/h
01:00 AM
9° / 11°
9° / 11°
Overcast
87% 45 km/h
02:00 AM
9° / 11°
9° / 11°
Overcast
92% 45 km/h
03:00 AM
9° / 11°
9° / 11°
Overcast
92% 48 km/h
04:00 AM
10° / 11°
10° / 11°
Slight Rain
94% 64 km/h
05:00 AM
8° / 10°
8° / 10°
Clear Sky
86% 61 km/h
06:00 AM
8° / 10°
8° / 10°
Overcast
83% 38 km/h

30 Day Averages and Extremes

  • Average high 10.53°C
  • Average low 6.87°C
  • Hottest day 13°C (15 December 2025)
  • Coldest day 1°C (25 November 2025)
  • Average humidity 87.03%
  • Days with precipitation 29 days
  • Highest precipitation 98 mm (01 December 2025)

Yesterday's Data

  • Max: 12°C
  • Min: 11°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Swansea over the next 12 hours

Temperature and possibility of rain in Swansea in the coming days

Rainfall in Swansea in the coming days

Swansea Climate Summary

Swansea features a Marine west coast, warm summer (Köppen classification: Cfb), with an average annual temperature of 11.53ºC (52.75ºF), which is about 0.78% higher than the national average for United Kingdom. Annually, the city experiences approximately 104.82 millimeters (4.13 inches) of rainfall, spread across 179.65 rainy days, accounting for 49.22% of the year.

Longitude 51.62144
Latitude -3.943646
Yearly high temperature 12.93ºC (55.27ºF)
Yearly low temperature 8.94ºC (48.09ºF)
Hottest month July 18.23ºC (64.81ºF)
Coldest month December 6.26ºC (43.27ºF)
Yearly precip 104.82mm (4.13in)
Days with rainfall 179.65 days (49.22%)
Driest month April (80.1%)
Wettest month December (83.14%)

Weather averages by month

Month High / Low (°C) Rain
January 7.97° / 5.05° 17.73 days
February 8.02° / 4.84° 14.91 days
March 9.55° / 5.21° 12.36 days
April 11.88° / 6.77° 10.45 days
May 14.09° / 9.07° 11.55 days
June 16.57° / 11.66° 13.82 days
July 18.23° / 13.65° 13.64 days
August 17.89° / 13.92° 17.73 days
September 16.73° / 12.46° 14.18 days
October 14.13° / 10.59° 16.55 days
November 10.93° / 7.85° 17.64 days
December 9.11° / 6.26° 19.09 days

Swansea's weather

Frequently asked questions

1. What is the hottest month in Swansea?

July has the highest average monthly temperature (daily mean of 18.23ºC) and December are the coolest (daily mean of 6.26ºC).

2. What should I wear in Swansea today?

For today's cool weather in Swansea, with temperatures between 9ºC to 12ºC (48.2ºF to 53.6ºF), you should consider wearing:
- Light jacket or cardigan
- Thin gloves (optional for early mornings or late evenings)
- Comfortable pants or jeans
- Long-sleeve top or shirt

Temperature

Early
11°C / 11°C
Morning
12°C / 12°C
Afternoon
12°C / 12°C
Evening
7°C / 11°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 442
  • CO 126
  • NH3 0
  • NO2 1
  • O3 80
  • PM10 19
  • PM25 4
  • SO2 0
  • CH4 1,377

Sunrise / Sunset

08:10
16:06