Snowdonia National Park Weather by Month — Temperature & Rainfall Guide

Snowdonia National Park is a region in the United Kingdom. Many people wonder what the weather conditions are in Snowdonia National Park over the year. What is the best time to visit Snowdonia National Park?

This page shows the average weather conditions by month in Snowdonia National Park over the year in: January, February, March, April, May, June, July, August, September, October, November, December.

January is a winter month. In Betws-y-coed you can expect cold maximum average daytime temperatures around 8°C (46°F) and nighttime temperatures around 2°C (36°F). On average, this month is the coldest month of the year in Snowdonia National Park.

Find more detailed climate information for Snowdonia National Park in January here.

February is a winter month. In Betws-y-coed you can expect cold maximum average daytime temperatures around 8°C (46°F) and nighttime temperatures around 2°C (36°F).

Find more detailed climate information for Snowdonia National Park in February here.

In Betws-y-coed you can expect cold maximum average daytime temperatures around 10°C (50°F) and nighttime temperatures around 3°C (37°F).

Find more detailed climate information for Snowdonia National Park in March here.

In Betws-y-coed you can expect mild maximum average daytime temperatures around 12°C (54°F) and nighttime temperatures around 4°C (39°F).

Find more detailed climate information for Snowdonia National Park in April here.

In Betws-y-coed you can expect mild maximum average daytime temperatures around 15°C (59°F) and nighttime temperatures around 7°C (45°F).

Find more detailed climate information for Snowdonia National Park in May here.

June is a summer month. In Betws-y-coed you can expect mild maximum average daytime temperatures around 18°C (64°F) and nighttime temperatures around 10°C (50°F).

Find more detailed climate information for Snowdonia National Park in June here.

July is a summer month. In Betws-y-coed you can expect pleasant maximum average daytime temperatures around 19°C (66°F) and nighttime temperatures around 12°C (54°F). On average, this month is the warmest month of the year in Snowdonia National Park.

Find more detailed climate information for Snowdonia National Park in July here.

August is a summer month. In Betws-y-coed you can expect pleasant maximum average daytime temperatures around 19°C (66°F) and nighttime temperatures around 12°C (54°F).

Find more detailed climate information for Snowdonia National Park in August here.

In Betws-y-coed you can expect mild maximum average daytime temperatures around 17°C (63°F) and nighttime temperatures around 10°C (50°F).

Find more detailed climate information for Snowdonia National Park in September here.

In Betws-y-coed you can expect mild maximum average daytime temperatures around 14°C (57°F) and nighttime temperatures around 7°C (45°F).

Find more detailed climate information for Snowdonia National Park in October here.

In Betws-y-coed you can expect cold maximum average daytime temperatures around 10°C (50°F) and nighttime temperatures around 5°C (41°F).

Find more detailed climate information for Snowdonia National Park in November here.

December is a winter month. In Betws-y-coed you can expect cold maximum average daytime temperatures around 8°C (46°F) and nighttime temperatures around 3°C (37°F).

Find more detailed climate information for Snowdonia National Park in December here.