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:
20°C
68.0°F
°C °F

Condition: Overcast

Pressure: 1,007 hPa

Feel like: 21 °C

Temperature: 20°C

Cloud: 91%

Humidity: 86%

Wind: SW - 18 km/h

Visibility: 16.14 km

Weather forecast

Wed
05 Aug
12°C / 19°C
Overcast
Thu
06 Aug
10°C / 19°C
Drizzle
Fri
07 Aug
10°C / 20°C
Overcast
Sat
08 Aug
15°C / 21°C
Drizzle
Sun
09 Aug
13°C / 18°C
Drizzle
Hourly forecast today:
11:00 AM
18° / 20°
18° / 20°
Overcast
86% 30 km/h
12:00 PM
17° / 21°
17° / 21°
Overcast
82% 31 km/h
13:00 PM
17° / 21°
17° / 21°
Partly Cloudy
78% 34 km/h
14:00 PM
17° / 20°
17° / 20°
Overcast
82% 47 km/h
15:00 PM
17° / 20°
17° / 20°
Overcast
79% 35 km/h
16:00 PM
17° / 20°
17° / 20°
Overcast
80% 38 km/h
17:00 PM
16° / 20°
16° / 20°
Overcast
79% 36 km/h
18:00 PM
15° / 20°
15° / 20°
Overcast
76% 37 km/h
19:00 PM
16° / 19°
16° / 19°
Mainly Clear
82% 33 km/h
20:00 PM
16° / 19°
16° / 19°
Overcast
84% 37 km/h
21:00 PM
16° / 19°
16° / 19°
Partly Cloudy
86% 33 km/h

30 Day Averages and Extremes

  • Average high 20.13°C
  • Average low 13.27°C
  • Hottest day 26°C (02 August 2026)
  • Coldest day 0°C (17 August 2026)
  • Average humidity 65.87%
  • Days with precipitation 19 days
  • Highest precipitation 64 mm (03 August 2026)

Yesterday's Data

  • Max: 21°C
  • Min: 17°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 mild weather in Swansea, with temperatures between 15ºC to 18ºC (59.0ºF to 64.4ºF), consider wearing:
- Comfortable jeans or slacks
- Cotton socks
- Long-sleeve shirt or blouse
- Lightweight sweater or cardigan

Temperature

Early
16°C / 20°C
Morning
18°C / 19°C
Afternoon
17°C / 20°C
Evening
16°C / 19°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 438
  • CO 113
  • NH3 0
  • NO2 1
  • O3 50
  • PM10 7
  • PM25 3
  • SO2 0
  • CH4 1,342

Sunrise / Sunset

04:45
19:58