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:
23°C
73.4°F
°C °F

Condition: Overcast

Pressure: 1,014 hPa

Feel like: 22 °C

Temperature: 23°C

Cloud: 100%

Humidity: 56%

Wind: S - 12 km/h

Visibility: 38.32 km

Weather forecast

Mon
07 Sep
10°C / 17°C
Overcast
Tue
08 Sep
10°C / 16°C
Drizzle
Wed
09 Sep
13°C / 18°C
Moderate Rain
Thu
10 Sep
14°C / 18°C
Drizzle
Fri
11 Sep
12°C / 17°C
Moderate Drizzle
Hourly forecast today:
15:00 PM
13° / 23°
13° / 23°
Overcast
56% 23 km/h
16:00 PM
14° / 22°
14° / 22°
Overcast
63% 22 km/h
17:00 PM
14° / 22°
14° / 22°
Overcast
61% 26 km/h
18:00 PM
14° / 20°
14° / 20°
Overcast
69% 32 km/h
19:00 PM
15° / 19°
15° / 19°
Overcast
78% 27 km/h
20:00 PM
17° / 19°
17° / 19°
Overcast
87% 24 km/h
21:00 PM
17° / 19°
17° / 19°
Overcast
92% 25 km/h
22:00 PM
17° / 18°
17° / 18°
Overcast
92% 23 km/h
23:00 PM
17° / 18°
17° / 18°
Overcast
93% 21 km/h
00:00 AM
17° / 18°
17° / 18°
Overcast
92% 20 km/h
01:00 AM
17° / 18°
17° / 18°
Overcast
92% 17 km/h

30 Day Averages and Extremes

  • Average high 17.43°C
  • Average low 12.27°C
  • Hottest day 24°C (25 August 2026)
  • Coldest day 0°C (19 September 2026)
  • Average humidity 74.2%
  • Days with precipitation 25 days
  • Highest precipitation 85 mm (01 September 2026)

Yesterday's Data

  • Max: 23°C
  • Min: 14°C
  • Total Precipitation: 6 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:
- Casual sneakers or loafers
- Lightweight sweater or cardigan
- Cotton socks
- Long-sleeve shirt or blouse

Temperature

Early
13°C / 14°C
Morning
13°C / 17°C
Afternoon
13°C / 23°C
Evening
17°C / 19°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 428
  • CO 164
  • NH3 2
  • NO2 2
  • O3 84
  • PM10 11
  • PM25 5
  • SO2 0
  • CH4 1,385

Sunrise / Sunset

05:37
18:48