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:
25°C
77.0°F
°C °F

Condition: Clear Sky

Pressure: 1,018 hPa

Feel like: 24 °C

Temperature: 25°C

Cloud: 0%

Humidity: 33%

Wind: WNW - 3 km/h

Visibility: 36.0 km

Weather forecast

Tue
11 Aug
15°C / 29°C
Mainly Clear
Wed
12 Aug
18°C / 33°C
Clear Sky
Thu
13 Aug
15°C / 23°C
Overcast
Fri
14 Aug
15°C / 19°C
Overcast
Sat
15 Aug
13°C / 23°C
Drizzle
Hourly forecast today:
15:00 PM
7° / 25°
7° / 25°
Clear Sky
33% 19 km/h
16:00 PM
9° / 24°
9° / 24°
Clear Sky
40% 23 km/h
17:00 PM
10° / 24°
10° / 24°
Clear Sky
42% 17 km/h
18:00 PM
10° / 23°
10° / 23°
Clear Sky
45% 19 km/h
19:00 PM
13° / 21°
13° / 21°
Clear Sky
60% 13 km/h
20:00 PM
10° / 20°
10° / 20°
Clear Sky
53% 21 km/h
21:00 PM
11° / 19°
11° / 19°
Clear Sky
58% 20 km/h
22:00 PM
11° / 18°
11° / 18°
Clear Sky
61% 15 km/h
23:00 PM
10° / 18°
10° / 18°
Clear Sky
59% 14 km/h
00:00 AM
10° / 18°
10° / 18°
Clear Sky
59% 14 km/h
01:00 AM
7° / 17°
7° / 17°
Clear Sky
52% 17 km/h

30 Day Averages and Extremes

  • Average high 21.0°C
  • Average low 14.0°C
  • Hottest day 33°C (12 August 2026)
  • Coldest day 0°C (23 August 2026)
  • Average humidity 65.97%
  • Days with precipitation 16 days
  • Highest precipitation 81 mm (03 August 2026)

Yesterday's Data

  • Max: 25°C
  • Min: 14°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 very hot weather in Swansea, with the high temperatures above 26ºC (78.8ºF), consider wearing:
- UV-protective sunglasses
- Loose and airy fabrics like linen or cotton
- Sunscreen for skin protection
- Lightweight t-shirt or tank top

Temperature

Early
14°C / 15°C
Morning
9°C / 19°C
Afternoon
7°C / 25°C
Evening
11°C / 19°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 430
  • CO 141
  • NH3 1
  • NO2 2
  • O3 67
  • PM10 5
  • PM25 3
  • SO2 0
  • CH4 1,363

Sunrise / Sunset

04:54
19:47