ClimateAverages

Cardiff Weather in September

JanFebMarAprMayJunJulAugSepOctNovDec
Right now
23°C
Sunny · feels like 25°C
Humidity
65%
Wind
7 kph SW
UV
6.5
Rain
0%
Updated Jul 9, 12:45 PMWeather data by WeatherAPI.com
September daytime high
17.8°C
September overnight low
10.7°C
September average
14.2°C

In September, Cardiff typically sees daytime highs of 17.8°C and overnight lows around 10.7°C. Compared to the annual average high of 13.4°C, September runs +4.4°C.

vs. annual avg high
+4.4°C
Rank among 12 months
#4 warmest
Hottest year overall
2006

Where September ranks in Cardiff

JanFebMarAprMayJunJulAugSep18°OctNovDec

FAQ

What is the average temperature in Cardiff in September?

September in Cardiff averages a daytime high of 17.8°C and an overnight low of 10.7°C.

Is September warm or cold in Cardiff?

September runs +4.4°C compared to Cardiff's annual average high of 13.4°C, ranking #4 of 12 months by warmth.

What should I pack for Cardiff in September?

Plan for daytime highs near 17.8°C and cooler evenings around 10.7°C.

Other months for Cardiff

JanuaryFebruaryMarchAprilMayJuneJulyAugustOctoberNovemberDecember

September in nearby cities

SwanseaNewportRhonddaBarry