Spring (March–May): Average 41–52°F, 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 51–56°F, 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 49–52°F, 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 38–42°F, 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. 47.5°F / Annual rainfall: approx. 72 mm / Summer humidity: 60%–70% / Rainiest month: February
Snowdonia National Park monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
38.1°F
8.3
February
41.7°F
9.1
March
41.5°F
7.6
April
44.6°F
7.5
May
52.5°F
4.4
June
52°F
3.2
July
55.2°F
5.1
August
56.3°F
6.6
September
52.7°F
4.2
October
49.1°F
4.7
November
43.7°F
4.7
December
42.8°F
7.2
Snowdonia National Park weather for the next seven days
10/29
Wednesday
Patchy rain nearby
47.9°F/43.8°F
10/30
Thursday
Moderate rain
48.9°F/40.4°F
10/31
Friday
Moderate rain
52.4°F/48.1°F
11/1
Saturday
Moderate rain
47.9°F/43°F
11/2
Sunday
Moderate rain
47.5°F/41.7°F
11/3
Monday
Moderate rain
54.7°F/51.6°F
11/4
Tuesday
Patchy rain nearby
52.2°F/50.1°F
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