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:
17°C
62.6°F
°C °F

Condition: Drizzle

Pressure: 1,015 hPa

Feel like: 16 °C

Temperature: 17°C

Cloud: 100%

Humidity: 87%

Wind: WSW - 15 km/h

Visibility: 27.3 km

Weather forecast

Sun
20 Sep
10°C / 18°C
Overcast
Mon
21 Sep
10°C / 19°C
Fog
Tue
22 Sep
10°C / 17°C
Overcast
Wed
23 Sep
6°C / 18°C
Overcast
Thu
24 Sep
12°C / 15°C
Moderate Drizzle
Hourly forecast today:
17:00 PM
15° / 17°
15° / 17°
Drizzle
87% 27 km/h
18:00 PM
14° / 17°
14° / 17°
Overcast
83% 24 km/h
19:00 PM
13° / 16°
13° / 16°
Partly Cloudy
81% 27 km/h
20:00 PM
13° / 16°
13° / 16°
Mainly Clear
87% 18 km/h
21:00 PM
13° / 15°
13° / 15°
Overcast
84% 20 km/h
22:00 PM
13° / 16°
13° / 16°
Overcast
83% 24 km/h
23:00 PM
13° / 15°
13° / 15°
Overcast
85% 24 km/h
00:00 AM
13° / 15°
13° / 15°
Overcast
87% 21 km/h
01:00 AM
12° / 15°
12° / 15°
Overcast
85% 20 km/h
02:00 AM
11° / 14°
11° / 14°
Mainly Clear
85% 21 km/h
03:00 AM
9° / 13°
9° / 13°
Overcast
77% 17 km/h

30 Day Averages and Extremes

  • Average high 16.7°C
  • Average low 11.8°C
  • Hottest day 24°C (05 September 2026)
  • Coldest day 0°C (02 October 2026)
  • Average humidity 76.87%
  • Days with precipitation 25 days
  • Highest precipitation 86 mm (12 September 2026)

Yesterday's Data

  • Max: 18°C
  • Min: 15°C
  • Total Precipitation: 1 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 14ºC to 17ºC (57.2ºF to 62.6ºF), consider wearing:
- Lightweight sweater or cardigan
- Cotton socks
- Casual sneakers or loafers
- Light jacket (for cooler periods)

Temperature

Early
14°C / 16°C
Morning
16°C / 18°C
Afternoon
13°C / 18°C
Evening
13°C / 15°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 432
  • CO 163
  • NH3 0
  • NO2 2
  • O3 64
  • PM10 11
  • PM25 5
  • SO2 0
  • CH4 1,364

Sunrise / Sunset

05:58
18:18