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: Clear Sky

Pressure: 1,019 hPa

Feel like: 12 °C

Temperature: 13°C

Cloud: 0%

Humidity: 76%

Wind: N - 6 km/h

Visibility: 23.62 km

Weather forecast

Sun
09 Aug
14°C / 22°C
Partly Cloudy
Mon
10 Aug
13°C / 27°C
Mainly Clear
Tue
11 Aug
17°C / 31°C
Overcast
Wed
12 Aug
15°C / 23°C
Drizzle
Thu
13 Aug
17°C / 26°C
Drizzle
Hourly forecast today:
02:00 AM
9° / 13°
9° / 13°
Clear Sky
76% 10 km/h
03:00 AM
9° / 13°
9° / 13°
Clear Sky
75% 14 km/h
04:00 AM
9° / 13°
9° / 13°
Clear Sky
75% 14 km/h
05:00 AM
9° / 13°
9° / 13°
Clear Sky
75% 13 km/h
06:00 AM
8° / 14°
8° / 14°
Clear Sky
69% 13 km/h
07:00 AM
10° / 16°
10° / 16°
Clear Sky
66% 11 km/h
08:00 AM
11° / 17°
11° / 17°
Overcast
69% 14 km/h
09:00 AM
12° / 18°
12° / 18°
Overcast
67% 21 km/h
10:00 AM
12° / 19°
12° / 19°
Overcast
64% 17 km/h
11:00 AM
11° / 19°
11° / 19°
Overcast
58% 17 km/h
12:00 PM
10° / 20°
10° / 20°
Overcast
55% 11 km/h

30 Day Averages and Extremes

  • Average high 20.43°C
  • Average low 13.47°C
  • Hottest day 31°C (11 August 2026)
  • Coldest day 0°C (21 August 2026)
  • Average humidity 65.63%
  • Days with precipitation 18 days
  • Highest precipitation 81 mm (03 August 2026)

Yesterday's Data

  • Max: 22°C
  • Min: 13°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 warm weather in Swansea, with temperatures between 20ºC to 23ºC (68.0ºF to 73.4ºF), you might consider wearing:
- Sunglasses
- Cotton or linen fabrics
- T-shirt or short-sleeve blouse
- Comfortable sandals or sneakers

Temperature

Early
9°C / 13°C
Morning
12°C / 18°C
Afternoon
11°C / 22°C
Evening
11°C / 20°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 458
  • CO 150
  • NH3 3
  • NO2 10
  • O3 38
  • PM10 9
  • PM25 7
  • SO2 0
  • CH4 1,459

Sunrise / Sunset

04:51
19:50