Weather in Cardiff in september
Climate normals based on 10 years of historical data for Cardiff, Storbritannia.
Average high
18°C
Average low
12°C
Rainfall
109 mm
13 rainy days
Sunshine
2.8h/day
Luftfuktighet
80%
How Hot Is Cardiff in september?
Expect daytime highs around 18°C and overnight lows near 12°C in Cardiff during September — an average of 15°C across the day.
Sunshine Hours in september
Cardiff is gloomy through September: 2.8h of direct sun on a typical day.
Does It Rain In Cardiff In september?
Rainfall is heavy and regular: 109mm in 13 days in Cardiff.
Is Cardiff Humid In september?
Cardiff's air is saturated this month: humidity averages a sweltering 80%.
Wind In Cardiff In september
Wind picks up in Cardiff during September — averaging 23 kph, with gustier afternoons.
Cloud Cover In Cardiff In september
Cardiff's September runs cloudy: typical cloud cover of 67%.
Cities With Similar Weather In september
Weather in Cardiff, month by month
| Month | High / Low | Regn | |
|---|---|---|---|
| Vær i januar | 8°C / 4°C | 103mm | Details → |
| Vær i februar | 9°C / 4°C | 107mm | Details → |
| Vær i mars | 10°C / 5°C | 111mm | Details → |
| Vær i april | 12°C / 6°C | 68mm | Details → |
| Vær i mai | 16°C / 9°C | 85mm | Details → |
| Vær i juni | 18°C / 12°C | 67mm | Details → |
| Vær i juli | 20°C / 13°C | 89mm | Details → |
| Vær i august | 20°C / 14°C | 103mm | Details → |
| Vær i september | 18°C / 12°C | 109mm | |
| Vær i oktober | 15°C / 10°C | 145mm | Details → |
| Vær i november | 11°C / 7°C | 115mm | Details → |
| Vær i desember | 10°C / 6°C | 146mm | Details → |