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:
13°C
55.4°F
°C °F

Condition: Overcast

Pressure: 1,023 hPa

Feel like: 12 °C

Temperature: 13°C

Cloud: 91%

Humidity: 77%

Wind: NE - 3 km/h

Visibility: 20.68 km

Weather forecast

Sat
08 Aug
16°C / 24°C
Drizzle
Sun
09 Aug
13°C / 23°C
Overcast
Mon
10 Aug
15°C / 27°C
Partly Cloudy
Tue
11 Aug
18°C / 25°C
Overcast
Wed
12 Aug
15°C / 25°C
Overcast
Hourly forecast today:
06:00 AM
9° / 13°
9° / 13°
Overcast
77% 7 km/h
07:00 AM
10° / 14°
10° / 14°
Overcast
76% 7 km/h
08:00 AM
10° / 15°
10° / 15°
Clear Sky
74% 7 km/h
09:00 AM
12° / 16°
12° / 16°
Clear Sky
75% 12 km/h
10:00 AM
11° / 17°
11° / 17°
Overcast
71% 14 km/h
11:00 AM
12° / 17°
12° / 17°
Moderate Drizzle
75% 11 km/h
12:00 PM
12° / 18°
12° / 18°
Drizzle
68% 25 km/h
13:00 PM
11° / 18°
11° / 18°
Partly Cloudy
63% 28 km/h
14:00 PM
10° / 19°
10° / 19°
Partly Cloudy
57% 27 km/h
15:00 PM
10° / 20°
10° / 20°
Partly Cloudy
53% 23 km/h
16:00 PM
10° / 20°
10° / 20°
Mainly Clear
52% 21 km/h

30 Day Averages and Extremes

  • Average high 20.57°C
  • Average low 13.63°C
  • Hottest day 27°C (10 August 2026)
  • Coldest day 0°C (20 August 2026)
  • Average humidity 65.1%
  • Days with precipitation 19 days
  • Highest precipitation 75 mm (03 August 2026)

Yesterday's Data

  • Max: 20°C
  • Min: 12°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 very hot weather in Swansea, with the high temperatures above 25ºC (77.0ºF), consider wearing:
- Thin, moisture-wicking socks
- Open-toed sandals or light sneakers
- Wide-brimmed sun hat
- Loose and airy fabrics like linen or cotton

Temperature

Early
9°C / 12°C
Morning
12°C / 16°C
Afternoon
10°C / 20°C
Evening
11°C / 16°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 439
  • CO 153
  • NH3 2
  • NO2 12
  • O3 41
  • PM10 8
  • PM25 4
  • SO2 1
  • CH4 1,413

Sunrise / Sunset

04:50
19:53