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Photo by The wub, CC BY-SA 4.0, via Wikimedia Commons.
Cardiff in September
sweet spot · one of the best months to go
The year in Cardiff
Tap a month for its page
- JanJCardiff in January: avoid
- FebFCardiff in February: avoid
- MarMCardiff in March: ok
- AprACardiff in April: sweet spot
- MayMCardiff in May: sweet spot
- JunJCardiff in June: sweet spot, busy
- JulJCardiff in July: sweet spot, busy
- AugACardiff in August: sweet spot, busy
- SepSCardiff in September: sweet spot
- OctOCardiff in October: ok
- NovNCardiff in November: avoid
- DecDCardiff in December: avoid
- Sweet spot
- Good
- OK
- Avoid
- Busy
Plan this trip
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The numbers
| Daily high | 18°C |
|---|---|
| Nightly low | 12°C |
| Feels like, afternoon | 17°C |
| Rainy days, 1 mm or more | 12 · 115 mm |
| Humidity | 82% |
| Sunshine | 8.5 h/day |
| Daylight | 12.6 h/day |
| Crowds | 100 / 100, higher is quieter |
Ten-year averages for this calendar month. A rainy day is one with at least 1 mm of rain, as a weather station counts it. The model these figures come from drizzles more than a rain gauge, the more so the warmer the month, so its days count from 2 mm, rising to 5 mm in the hottest.
Weather read at the centre, 15 km from the airport (CWL): ten years of ERA5 and ERA5-Land reanalysis, through Open-Meteo's open data.
How busy it gets
Cardiff in pictures
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Jeremy Segrott from Cardiff, Wales, UK, CC BY 2.0, via Wikimedia Commons
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mattbuck (category), CC BY-SA 3.0, via Wikimedia Commons
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mattbuck (category), CC BY-SA 3.0, via Wikimedia Commons
What to pack
- Warm layers for the evenings, which drop to about 12°C.
- Rain gear you will actually use: about 12 rainy days and 115 mm.
- Sun protection: about 8 hours of sunshine a day.
- Humidity averages 82%; breathable fabrics dry faster.
Each line is a threshold over the ten-year figures above, not advice from anywhere else.
Before you go
Type G plugs at 230 V. Drives on the left. The currency is the Pound sterling. Everything for United Kingdom: cost of living, languages, emergency numbers and health.
On arrival in Cardiff: the apps, paying, getting around, tipping and the emergency numbers.
September elsewhere
In September from
The other months at Cardiff
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