Cardiff weather in October
October in Cardiff: cool, soaked, with clean air — fine if you can take 20 rainy days.
#8 of 12 months in Cardiff · #683 of 897 destinations to visit in October · comfort 68/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Cardiff in October
No notes yet. Open Cardiff on the map to add the first one.
Cardiff climate normals — October
| Daytime high | 15°C / 58°F | 🙂 cool |
|---|---|---|
| Nighttime low | 10°C / 50°F | |
| Rainfall | 157 mm / 6.2 in | ⛈ soaked |
| Rainy days | 20 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 11°C / 51°F | |
| Sunshine | 5.6 h/day | |
| Daylight | 10.7 h | |
| Wind | 25 km/h / 15 mph | |
| Air quality (US AQI) | 29 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Cardiff?
Loading map…
Cardiff in October — FAQ
- Is October a good time to visit Cardiff?
- October in Cardiff: cool, soaked, with clean air — fine if you can take 20 rainy days. It ranks #8 of 12 months for Cardiff on SeasonMap's comfort score (68/100).
- What is the weather like in Cardiff in October?
- In October, Cardiff averages a daily high of 14.5°C and a low of 10.2°C, with about 157.4 mm of rain over roughly 20 rainy days.
- What is the air quality in Cardiff in October?
- Cardiff has a mean US Air Quality Index of about 29 in October.