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:
18°C
64.4°F
°C °F

Condition: Overcast

Pressure: 1,018 hPa

Feel like: 17 °C

Temperature: 18°C

Cloud: 100%

Humidity: 69%

Wind: S - 10 km/h

Visibility: 24.86 km

Weather forecast

Sun
21 Jun
16°C / 28°C
Drizzle
Mon
22 Jun
20°C / 30°C
Slight Thunderstorm
Tue
23 Jun
18°C / 33°C
Slight Thunderstorm
Wed
24 Jun
21°C / 31°C
Slight Thunderstorm
Thu
25 Jun
16°C / 28°C
Drizzle
Hourly forecast today:
12:00 PM
12° / 18°
12° / 18°
Overcast
69% 20 km/h
13:00 PM
12° / 18°
12° / 18°
Overcast
68% 23 km/h
14:00 PM
12° / 19°
12° / 19°
Mainly Clear
63% 21 km/h
15:00 PM
12° / 18°
12° / 18°
Overcast
66% 25 km/h
16:00 PM
11° / 19°
11° / 19°
Overcast
60% 11 km/h
17:00 PM
12° / 19°
12° / 19°
Overcast
63% 17 km/h
18:00 PM
12° / 19°
12° / 19°
Overcast
62% 18 km/h
19:00 PM
12° / 19°
12° / 19°
Overcast
63% 10 km/h
20:00 PM
12° / 19°
12° / 19°
Overcast
66% 13 km/h
21:00 PM
12° / 18°
12° / 18°
Overcast
68% 8 km/h
22:00 PM
13° / 16°
13° / 16°
Clear Sky
82% 12 km/h

30 Day Averages and Extremes

  • Average high 18.57°C
  • Average low 13.03°C
  • Hottest day 33°C (23 June 2026)
  • Coldest day 0°C (03 July 2026)
  • Average humidity 74.0%
  • Days with precipitation 23 days
  • Highest precipitation 95 mm (05 June 2026)

Yesterday's Data

  • Max: 19°C
  • Min: 15°C
  • Total Precipitation: 10 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:
- Open-toed sandals or light sneakers
- Thin, moisture-wicking socks
- Sunscreen for skin protection
- Lightweight t-shirt or tank top

Temperature

Early
15°C / 15°C
Morning
11°C / 17°C
Afternoon
12°C / 18°C
Evening
12°C / 18°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 438
  • CO 113
  • NH3 0
  • NO2 1
  • O3 59
  • PM10 5
  • PM25 3
  • SO2 0
  • CH4 1,359

Sunrise / Sunset

03:57
20:38