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Cwmafan, Neath Port Talbot has a temperate maritime climate with mild winters and warm summers. The average temperature year-round is 11.3°C (52.3°F), with temperatures ranging from an average low of 5.8°C (42.4°F) in January to an average high of 17.2°C (63°F) in July.
Rainfall averages 849mm (33.4 inches) per year, with the wettest months being December and January when rainfall averages 95mm (3.7 inches). The driest months are June and July where rainfall averages 57mm (2.2 inches).
Snowfall is rare, although there have been occasional snowfalls in the winter months.
The summer months are usually sunny and warm, with an average of 14.7 hours of sunshine per day in July. The winter months are usually cloudy, with an average of 5.2 hours of sunshine per day in January.
Wind speeds tend to be light to moderate year-round, with average speeds of 6.5 m/s (14.5 mph) in July and 5.9 m/s (13.2 mph) in January.
As of 2020, the city population is 6538.
This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Cwmafan, Neath Port Talbot.