Snowdonia National Park Weather in May

Average temperatures, rainfall, sunshine and the best places to visit in Snowdonia National Park, the United Kingdom in May.

Planning a journey to Snowdonia National Park, the United Kingdom this May and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in Snowdonia National Park in May

Snowdonia National Park, the United Kingdom is a region in the United Kingdom. May in Snowdonia National Park generally has mild temperatures, with moderate precipitation.

Temperatures

You can expect mild maximum daytime temperatures of around 15°C (59°F) and nighttime temperatures around 7°C (45°F) in Betws-y-coed.

To learn more about the conditions in specific areas of Snowdonia National Park, the United Kingdom, check out the map below.

Precipitation

In May, precipitation varies across different areas. From moderate rainfall in Trefriw with an average of 85 mm (3.3 in) to moderate rainfall in Beddgelert with 97 mm (3.8 in). Looking at the climate data spanning the last 30 years, this month usually has the lowest rainfall in Betws-y-coed, marking it as the year's driest month.

Average sunshine

Most places get a reasonable amount of sunshine. Take Betws-y-coed as an example - it receives around 169 hours of sunlight, offering a nice mix of sunny and partly cloudy days. Want to compare this with brighter destinations? Try our weather planner to explore your options.

Explore Snowdonia National Park by month

Pick a month to see the average temperature, rainfall and sunshine in Snowdonia National Park — and find the best time to visit. (based on Betws-y-coed)

Best Places to Visit in Snowdonia National Park in May

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Snowdonia National Park.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Snowdonia National Park

What is the weather like in May for some of the most popular destinations in Snowdonia National Park, the United Kingdom?

Temperature range in Snowdonia National Park (May)

Precipitation variation in Snowdonia National Park (May)

Betws-y-coed

In May Betws-y-coed generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 7°C (45°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

May
April
May
June
Max temperature
12°C (54°F)
15°C (59°F)
18°C (64°F)
Min temperature
4°C (39°F)
7°C (45°F)
10°C (50°F)
Monthly sun hours
135 hours
169 hours
151 hours
Monthly rainfall
89 mm (3.5 in)
88 mm (3.5 in)
99 mm (3.9 in)
Monthly rainy days
16 days
16 days
16 days
Weather conditions

Dolgellau

In May Dolgellau generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 7°C (45°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

May
April
May
June
Max temperature
12°C (54°F)
16°C (61°F)
18°C (64°F)
Min temperature
5°C (41°F)
7°C (45°F)
10°C (50°F)
Monthly sun hours
135 hours
169 hours
151 hours
Monthly rainfall
88 mm (3.5 in)
89 mm (3.5 in)
98 mm (3.9 in)
Monthly rainy days
16 days
16 days
16 days
Weather conditions

Blaenau-Ffestiniog

In May Blaenau-Ffestiniog generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 7°C (45°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

May
April
May
June
Max temperature
12°C (54°F)
15°C (59°F)
17°C (63°F)
Min temperature
4°C (39°F)
7°C (45°F)
9°C (48°F)
Monthly sun hours
135 hours
169 hours
151 hours
Monthly rainfall
96 mm (3.8 in)
97 mm (3.8 in)
105 mm (4.1 in)
Monthly rainy days
16 days
17 days
16 days
Weather conditions

Beddgelert

In May Beddgelert generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 8°C (46°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

May
April
May
June
Max temperature
12°C (54°F)
15°C (59°F)
17°C (63°F)
Min temperature
5°C (41°F)
8°C (46°F)
10°C (50°F)
Monthly sun hours
135 hours
169 hours
151 hours
Monthly rainfall
97 mm (3.8 in)
97 mm (3.8 in)
106 mm (4.2 in)
Monthly rainy days
16 days
16 days
16 days
Weather conditions

Dolwyddelan

In May Dolwyddelan generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 7°C (45°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

May
April
May
June
Max temperature
12°C (54°F)
15°C (59°F)
18°C (64°F)
Min temperature
4°C (39°F)
7°C (45°F)
9°C (48°F)
Monthly sun hours
135 hours
169 hours
151 hours
Monthly rainfall
93 mm (3.7 in)
93 mm (3.7 in)
103 mm (4.1 in)
Monthly rainy days
16 days
17 days
16 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Snowdonia National Park, in the United Kingdom.

Popular cities in May

Day & night temperatures, rainfall and average weather in Snowdonia National Park in May.

City Weather Day temp Night temp Rainfall
Betws-y-coed 15°C (59°F) 7°C (45°F) 88 mm (3.5 in)
Dolgellau 16°C (61°F) 7°C (45°F) 89 mm (3.5 in)
Blaenau-Ffestiniog 15°C (59°F) 7°C (45°F) 97 mm (3.8 in)
Beddgelert 15°C (59°F) 8°C (46°F) 97 mm (3.8 in)
Dolwyddelan 15°C (59°F) 7°C (45°F) 93 mm (3.7 in)
Llanberis 15°C (59°F) 8°C (46°F) 90 mm (3.5 in)

Snowdonia National Park weather in May: frequently asked questions

What is the weather like in Snowdonia National Park, the United Kingdom in May?

May in Snowdonia National Park, the United Kingdom brings tolerable weather. In Betws-y-coed, daytime temperatures are typically around 15°C (59°F) and nighttime lows hover near 7°C (45°F).

What is the average temperature in Snowdonia National Park, the United Kingdom in May?

Betws-y-coed averages a daytime maximum of 15°C (59°F) in May, with overnight lows close to 7°C (45°F).

Does Snowdonia National Park, the United Kingdom get a lot of rain in May?

Not particularly. Betws-y-coed averages just 88 mm (3.5 in) of rain in May, making it a mostly dry month for Snowdonia National Park, the United Kingdom.

Is May a Good Time to Visit Snowdonia National Park, the United Kingdom?

Given the typically tolerable weather conditions in Betws-y-coed, May might be a good time to visit Snowdonia National Park, the United Kingdom. It's worth noting that weather conditions might differ depending on the location you visit.

On average, the best time to visit Snowdonia National Park, the United Kingdom is in June and July with generally pleasant weather in Betws-y-coed. The weather in January, February, March, November and December, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Snowdonia National Park.

Weather and climate has detailed information for every country in the world. Are you going to the United Kingdom? Get detailed historical weather averages for many cities in the United Kingdom.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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