Will it rain in
Swansea today?
Live hourly rain forecast and run verdict for Swansea, Wales, UK.
Running in Swansea means embracing the beauty of the Gower coast alongside some properly Welsh rain. Whether it's a blustery run along Swansea Bay, drizzle rolling in from the Atlantic, or a damp trail through Clyne Gardens, knowing whether to head out before you lace up matters. RainOrRun checks live conditions in Swansea right now and gives you an instant verdict — plus the best hourly window if the weather's on the fence. We'll also recommend the right gear for whatever Swansea's Atlantic-battered weather is throwing at you today.
What to wear
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How often does it rain in Swansea?
Swansea records around 1497mm of rain a year, spread across about 191 days — roughly 52% of all days, or 16 days in an average month. That is a genuinely wet climate for running. Rain falls on more days than not in Swansea, so the realistic approach is to run in it rather than around it — which makes a breathable waterproof and good grip the two things worth spending on.
The wettest month is December, averaging 190mm across about 19 rainy days. The driest is April, with 68mm over roughly 12 days. Average lows bottom out around 3.5°C in January — long-sleeve and light-glove weather rather than full winter kit. Summer highs peak around 19.4°C in July, comfortable for most daytime running.
Those are ten-year averages, not a forecast. What actually matters on the day is the next twelve hours — which is what the live verdict and hourly strip at the top of this page are for.
| Month | Rainfall | Rainy days | Avg high | Avg low |
|---|---|---|---|---|
| January | 133mm | 16 | 8.1°C | 3.5°C |
| February | 121mm | 15 | 8.7°C | 3.9°C |
| March | 124mm | 17 | 9.9°C | 4.4°C |
| April | 68mm | 12 | 12.5°C | 5.6°C |
| May | 93mm | 14 | 15.5°C | 8.9°C |
| June | 87mm | 14 | 18.1°C | 11.8°C |
| July | 113mm | 17 | 19.4°C | 13.4°C |
| August | 127mm | 18 | 19.1°C | 13.6°C |
| September | 133mm | 15 | 17.5°C | 11.9°C |
| October | 165mm | 17 | 14.5°C | 9.8°C |
| November | 143mm | 17 | 11°C | 6.6°C |
| December | 190mm | 19 | 9.4°C | 5.5°C |
Historical data: Open-Meteo archive, 2015–2024. A “rainy day” means at least 1mm of precipitation.
Running in Swansea: common questions
Will it rain in Swansea today?
The forecast card at the top of this page shows Swansea's rain probability for the current hour, plus an hour-by-hour breakdown for the rest of the day, using live Open-Meteo data. Historically, Swansea sees rain on about 191 days a year, so on any given day there is roughly a 52% chance of some rain falling.
Is it a good day to run in Swansea?
RainOrRun scores the live Swansea forecast on rain probability, rainfall amount, temperature, wind speed and severe weather, then returns a single verdict: Go, Maybe, or Don't Bother. A Maybe means conditions are borderline and it is worth picking your window rather than skipping the run.
What is the best time to run in Swansea today?
The hourly strip above highlights the best single window of the day for Swansea — the hour combining the lowest rain probability with the most comfortable temperature. You can also check up to eight days ahead using the date picker if you are planning a long run or a race.
What should I wear running in Swansea today?
The gear section on this page updates with the live Swansea forecast: a waterproof jacket and peaked cap when rain probability goes above 40%, a thermal base layer and gloves below 8 degrees Celsius, and a high-vis vest when wind or low light make you harder to see.
What is the wettest month in Swansea?
December is the wettest month in Swansea, averaging 190mm of rain across about 19 rainy days. April is the driest, with around 68mm over roughly 12 days. Figures are ten-year averages covering 2015 to 2024.
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