Average temperatures, rainfall and packing tips for Swansea, United Kingdom in May
May in Swansea is typically mild, with average daytime highs around 16°C and nights near 10°C. Temperature-wise it sits mid-range for Swansea (the 5th warmest month).
May is one of the wetter months in Swansea, with around 123 mm of rain - plan around showers.
If your dates are flexible, the most comfortable months in Swansea are usually July and August.
← Swansea weather tomorrow (live)
In May, Swansea averages a daytime high of about 16°C and a night-time low of around 10°C, based on recent historical data.
May is one of the wetter months in Swansea, with around 123 mm of rain - plan around showers.
May is a workable time to visit Swansea, with mild days - just pack accordingly. If your dates are flexible, the most comfortable months in Swansea are usually July and August.