South Wales Weather Forecast
South Wales weather: 53°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Climate in South Wales month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 46° | 36° | 5,5 in | ★★☆☆☆ |
| February | 49° | 41° | 6,2 in | ★★☆☆☆ |
| March | 54° | 40° | 3,5 in | ★★★☆☆ |
| April | 58° | 44° | 4,0 in | ★★★☆☆ |
| May | 65° | 50° | 3,8 in | ★★★★☆ |
| June | 68° | 54° | 3,6 in | ★★★★☆ |
| July | 73° | 57° | 2,3 in | ★★★★☆ |
| August | 72° | 57° | 3,0 in | ★★★★☆ |
| September | 64° | 52° | 4,4 in | ★★★★☆ |
| October | 59° | 49° | 5,9 in | ★★★☆☆ |
| November | 52° | 43° | 5,2 in | ★★★☆☆ |
| December | 50° | 42° | 6,8 in | ★★☆☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Best time to visit South Wales
Go in June, July and August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
Recent extremes in South Wales
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How South Wales compares with nearby places
Annual averages, and the difference against South Wales.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Bristol | 26 mi | 53°F | about the same | 41 in |
| Somerset | 28 mi | 54°F | +33°F warmer | 36 in |
| Bath | 36 mi | 52°F | 33°F cooler | 39 in |
| Devon | 55 mi | 53°F | about the same | 43 in |
| Stonehenge | 62 mi | 52°F | about the same | 36 in |
What to pack, what to skip
- A packable rain shell - 3 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
See the South Wales forecast by time range
South Wales weather - more answers
Explore South Wales
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is South Wales?
South Wales is a county in Wales. Its coordinates are 51.4816, -3.1791. It lies in Europe.
What is the weather like in South Wales right now?
It is currently 53°F (11°C) with overcast. Humidity is 72% and wind is 7 mph.
When is the best time to visit South Wales?
June, July and August offer the most comfortable conditions in South Wales, which has a temperate climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is South Wales in?
South Wales observes Europe/London (UTC+00:00). The local time is 11:11 PM.
How many people live in South Wales?
South Wales has a population of approximately 1.9 million.
What is the nearest airport to South Wales?
The closest airports are London Heathrow Airport (LHR), 117 mi away, London Gatwick Airport (LGW), 131 mi away and Dublin Airport (DUB), 187 mi away.
What are the top things to do in South Wales?
Popular options include Stonehenge, Avebury and Associated Sites, Stonehenge, Snowdonia National Park, River Thames, British Museum and Big Ben and the Houses of Parliament.
What places are in South Wales?
South Wales covers 1 places in this atlas, including Cardiff.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (uk-regions) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated October 26, 2026 at 11:11 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
