Swansea weather
Loading live data…Light rain,rain likely tomorrow
Met Office, the European and the American model agree on a high near 23° in Swansea today. Tomorrow looks drizzle around 19°, with a 98% chance of rain.
Latest for Swansea: Met Office (UKMO model): 19° Overcast · European (ECMWF): 18° Light drizzle · American (NOAA GFS): 16° Overcast.
The weather map: all three models at once
Met Office, European, American side by side around Swansea and nearby towns.Live rain radar →Next 14 hours
consensus of the three models14-day forecast
where the models agree, and where they splitSwansea, Wales. Below we compare what Met Office, European, American forecast for Swansea right now and flag exactly where they disagree, then break down Swansea's weather month by month and which forecast model has been most accurate here.
We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United Kingdom before you trust any single number.
Swansea weather by month
what to expect in Swansea through the yearHere is Swansea's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Swansea by season.
What Swansea's weather is like through the year
Swansea runs from warm summers, with June highs near 19°C, to cool winters, when January lows sit around 3°C (a swing of about 16°C across the year). March is usually the wettest month, and Swansea sees roughly 1786 mm of precipitation annually.
Best time to visit Swansea
The most comfortable time to visit Swansea is usually May, June, July and August, when daytime highs sit in the pleasant 16-26°C range and the heaviest March rain is behind you.
Which forecast is most accurate in Swansea?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 1880 cities. Lower error means a higher score. See which forecast model is most accurate in United Kingdom, how we measure forecast accuracy, or which model each weather app uses.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Swansea, scoring 87/100 on our CheckWeather Score, ahead of the Met Office at 84. See the full UK accuracy scoreboard for exactly how every model is tested.
Where the models disagree
temperature and rain, judged separatelyThe models often agree on temperature and still split on rain — and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.