Climate almanac
Carmarthen
Wales, United Kingdom · 51.86°, -4.31°
What is the weather like in Carmarthen in September?
In September, Carmarthen is typically 63°F (17°C) during the day and 54°F (12°C) at night. The month brings about 5.8 in (146 mm) of precipitation in total.
- Average high63°F (17°C)
- Average low54°F (12°C)
- Precipitation5.8 in (146 mm)
- Clear or mostly clear days4
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)