What is Eryri (Snowdonia) mountain weather like in October?

Typical mountain and low-level wind, temperature and rainfall for October, based on 40 years of weather history.

40-year mountain climate

Typical high-ground conditions in October.

Historically, October has been a mixed and often challenging month on the high ground. Of 1,240 representative high-ground days, 16% were excellent or good, 58% were average, and 26% were poor or severe.

Dry days accounted for 43% of the sample, while extensive cloud affected 57%. These figures describe representative high ground around 1,085 metres, so coastal and low-level conditions can be milder.

Plas Isaf for a October trip to Eryri (Snowdonia)
October stays on Eryri (Snowdonia)

Plas Isaf

Beddgelert · Sleeps 9

Indicative catalogue price £807 for 7 nightsExact October prices and availability are checked after you choose a week.
Excellent or good16%Historically dry43%High-ground temperature4.7°CTypical maximum gust31 mphStronger days around 41 mph
Plan beyond the forecast

Choose an area and week.

Saturday dates are highlighted because they usually unlock the widest choice of seven-night cottage stays. Other arrival days still work.

Typical conditions, not a forecastThis describes representative high ground. A difficult hill day can still be suitable for a lower-level plan.
Week 41 · 10 October

What this week is typically like on Eryri (Snowdonia) high ground.

Across 280 comparable historical hill days, 18% were excellent or good and 14% were poor or severe.

Check the live Eryri (Snowdonia) forecast →
Historically excellent or good18%280 comparable days
Excellent3%Good15%Average68%Poor13%Severe1%
Historically dry54% of daysTypical daily max gust28 mphStronger days around 37 mphTypical high ground5.1°C24-hour mean near 1,085 mExtensive cloud60% of days

October context: 16% of days across the month were excellent or good; 26% were poor or severe. Read the full October guide.

Valley and low level for this week

Around Betws-y-Coed.

Representative base · 35 m
Typical daily high14.5°CWarmer days 16.5°CHistorically dry60%58% dry with lighter windMaximum wind12 mphStronger days 15 mphTypical overnight low9.2°CCooler nights 6.7°C
Planning a different time of year?Compare Eryri (Snowdonia) month by month
Valleys and trip bases

Low-level weather around Betws-y-Coed in October.

Betws-y-Coed, at roughly 35 metres, provides a practical low-level reference for Eryri (Snowdonia). Across 1,240 historical days, the typical daytime high was 13.9°C, with warmer days around 15.9°C.

About 49% of days were dry and 47% combined dry weather with lighter winds. Conditions vary across glens, coasts and villages, so this should be used as regional trip-planning guidance rather than a forecast for every location.

Typical daily high13.9°CWarmer days around 15.9°CTypical overnight low8.8°CCooler nights around 6.2°CHistorically dry49%11% had 10 mm+ rainTypical maximum wind13 mphStronger days around 17 mph
January to December

Eryri (Snowdonia) weather by month.

Each month has a detailed guide comparing high-ground hill days with typical conditions at a representative valley or low-level trip base.

20 mountain areas

Compare another part of the UK.

Each page includes weekly and monthly high-ground and low-level climate summaries, a highlighted Saturday planner and nearby accommodation.