Swansea · United Kingdom
Weather in Swansea in September
In September the typical daytime high in Swansea is 18.2 °C on average, from 19.6 °C at the start to 16.5 °C at the end of the month.
The last 10 years were 1.3 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
The average of the weather stations Oxford (185 km), Valley (186 km) and Dublin Phoenix Park (252 km); nearer ones count more.