South Wales Weather Forecast
South Wales weather: 65°F, clear sky. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
South Wales is a county in Wales. South Wales is a county or metropolitan area in the United Kingdom. It has a population of about 1.9 million.
Right now it is 65°F (18°C) in South Wales with clear sky. It feels like 63°F. Today runs from 59°F to 70°F. Chance of precipitation is 100%. Sightseeing conditions score 6.9/10 - fair - plan around the weather.
The best time to visit South Wales is June, July and August. The climate is temperate. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 73°F, while January is the coldest with lows near 36°F.
The closest major airport is London Heathrow Airport (LHR), about 117 mi away. Nearby highlights include Stonehenge, Avebury and Associated Sites, Stonehenge, Snowdonia National Park and River Thames.
In plain terms. Today is slightly warmer than average for September. The forecast high of 70°F is 5.6°F above the 64°F typical for this month. The best window to be outside is roughly 11 AM to 2 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in South Wales today at 8.1/10. Wet roads are likely; braking distances roughly double in heavy rain.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Weather in South Wales right now
Source: Open-Meteo. Updated 10:26 PM, Sep 30 local time.
See the South Wales forecast by time range
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for South Wales
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Wed, Sep 30 | 🌧️ Rain | 70° / 59° | 100% · 0,3 in | 14 mph | 3 |
| Thu, Oct 1 | ☁️ Overcast | 64° / 54° | 37% | 10 mph | 2 |
| Fri, Oct 2 | 🌦️ Light drizzle | 67° / 57° | 90% · 0,0 in | 13 mph | 4 |
| Sat, Oct 3 | ☁️ Overcast | 66° / 60° | 36% | 11 mph | 4 |
| Sun, Oct 4 | ☁️ Overcast | 66° / 60° | 10% | 9 mph | 4 |
| Mon, Oct 5 | ☁️ Overcast | 66° / 58° | 7% | 9 mph | 3 |
| Tue, Oct 6 | 🌦️ Light drizzle | 65° / 54° | 21% · 0,1 in | 11 mph | 2 |
| Wed, Oct 7 | 🌦️ Light drizzle | 59° / 48° | 21% · 0,0 in | 9 mph | 3 |
| Thu, Oct 8 | ☁️ Overcast | 58° / 45° | 16% | 7 mph | 1 |
| Fri, Oct 9 | 🌦️ Light drizzle | 59° / 45° | 30% · 0,0 in | 14 mph | 1 |
| Sat, Oct 10 | 🌦️ Light drizzle | 59° / 50° | 31% · 0,1 in | 13 mph | 3 |
| Sun, Oct 11 | ☁️ Overcast | 58° / 46° | 25% | 12 mph | 3 |
| Mon, Oct 12 | 🌦️ Light drizzle | 58° / 45° | 33% · 0,0 in | 4 mph | 2 |
| Tue, Oct 13 | ☁️ Overcast | 61° / 51° | 37% | 8 mph | 3 |
| Wed, Oct 14 | 🌥️ Fog | 61° / 46° | — | 4 mph | 2 |
| Thu, Oct 15 | ☀️ Clear sky | -- / -- | — | -- | 1 |
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).
Weather map for South Wales
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in South Wales
Pollen today
Pollen is modelled for Europe only; other regions show no values.
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
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.
Weather by city in South Wales
1 cities mapped in this atlas
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 65°F (18°C) with clear sky. Humidity is 72% and wind is 10 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+01:00). The local time is 10:26 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 September 30, 2026 at 10:26 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
