Spring (March–May): Average 5.3–11.4°C, cool climate with less rainfall, suitable for hiking and trekking. Common activities: Hiking, trekking, enjoying mountain views. Recommended clothing: Warm jacket, waterproof jacket, comfortable hiking boots.
Summer (June–August): Average 11.1–13.5°C, mild climate with less rainfall and more sunny days. Common activities: Camping, rambling, boating, rock climbing. Recommended clothing: Lightweight and breathable clothing, waterproof jacket, sunscreen.
Autumn (September–November): Average 9.5–11.5°C, cool climate with less rainfall, crisp autumn weather. Common activities: Viewing autumn leaves, hiking, photography. Recommended clothing: Warm jacket, comfortable walking shoes.
Winter (December–February): Average 3.4–6.0°C, cold and humid climate, with potential snowfall. Common activities: Skiing, enjoying snow scenes. Recommended clothing: Thick warm clothing, waterproof jacket, warm hat, gloves and scarf.
Snowdonia National Park climatological average
Annual average temperature: approx. 8.6°C / Annual rainfall: approx. 72 mm / Summer humidity: 60%–70% / Rainiest month: February
Snowdonia National Park monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
3.4°C
8.3
February
5.4°C
9.1
March
5.3°C
7.6
April
7°C
7.5
May
11.4°C
4.4
June
11.1°C
3.2
July
12.9°C
5.1
August
13.5°C
6.6
September
11.5°C
4.2
October
9.5°C
4.7
November
6.5°C
4.7
December
6°C
7.2
Snowdonia National Park weather for the next seven days
10/29
Wednesday
Patchy rain nearby
8.9°C/6.6°C
10/30
Thursday
Moderate rain
9.4°C/4.6°C
10/31
Friday
Moderate rain
11.3°C/8.9°C
11/1
Saturday
Moderate rain
8.8°C/6.1°C
11/2
Sunday
Moderate rain
8.6°C/5.4°C
11/3
Monday
Moderate rain
12.6°C/10.9°C
11/4
Tuesday
Patchy rain nearby
11.2°C/10°C
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