Average daily temperatures in October
Temperatures in Wales during October land between 46-57°F (8-14°C). Along the coast, it's a tad warmer, while rural spots and valleys get chilly at night. Expect crisp mornings and sweater-weather afternoons.
The sea temperatures this month are typically around 59°F (15°C)—doable for wetsuit warriors, but definitely not sunbathing territory. Daylight hours dwindle from 7:30 AM to 6:30 PM, giving you about 10-11 hours of light for exploring. Frost may show up in the mornings, but full-on freezing is rare.
What about the crowd and cost?
In October, Wales sees a nice balance of activity—it's the shoulder season, so it's not as hectic as summer, but it's still lively enough to feel like you're in the thick of things. Spots popular with tourists like Snowdonia National Park and Cardiff Castle might draw some crowds, especially during school half-term breaks, but you won't be dealing with massive lines or fully booked hotels. It's the kind of month where things are busy, but manageable.
Costs are another perk of visiting in October. Accommodation prices usually drop by 20-30% compared to the peak summer months.
If the weather in Wales in October is feeling like it might be a bit too cold for you, September is your sweet spot. It's a little pricier than October but still quieter than the summer crush. Not convinced this is the month for you? See our guide to the best time to visit Wales.