Gwynedd Weather in May

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

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Llandudno Criccieth Conwy Holyhead

Planning a journey to Gwynedd, 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 Gwynedd in May

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

Temperatures

The average maximum temperatures are mild and range from 13°C (55°F) in Aberdaron to 16°C (61°F) in Llanfairfechan. Nighttime temperatures generally drop to 8°C (46°F) in Llanfairfechan and 10°C (50°F) in Aberdaron.

To explore the conditions in Gwynedd, the United Kingdom in more detail, check the map below.

Precipitation

In May, precipitation varies across different areas. From moderate rainfall in Cemaes Bay with an average of 63 mm (2.5 in) to moderate rainfall in Beddgelert with 97 mm (3.8 in). Based on climate data from the last 30 years, Llandudno typically sees the least rain in this month, making it the driest month of the year.

Average sunshine

Most areas see decent amounts of sunshine this month. Llandudno gets around 169 hours of sunlight, providing a pleasant balance of sun and clouds. If you'd prefer more guaranteed sunshine, our weather planner can show you sunnier spots around the world.

Explore Gwynedd by month

Pick a month to see the average temperature, rainfall and sunshine in Gwynedd — and find the best time to visit. (based on Llandudno)

January9°C (48°F) February9°C (48°F) March10°C (50°F) April12°C (54°F) May15°C (59°F) June18°C (64°F) This monthJuly20°C (68°F) August19°C (66°F) September18°C (64°F) October15°C (59°F) November11°C (52°F) December9°C (48°F)
Best Time to Visit Gwynedd →

Best Places to Visit in Gwynedd in May

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

Conditions Temperatures Precipitation
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 Gwynedd

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

Temperature range in Gwynedd (May)

Precipitation variation in Gwynedd (May)

Llandudno

In May Llandudno 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.

« April
May
June »
April
May
June
Max temperature
12°C (54°F)
15°C (59°F)
18°C (64°F)
Min temperature
6°C (43°F)
8°C (46°F)
11°C (52°F)
Monthly sun hours
135 hours
169 hours
151 hours
Monthly rainfall
78 mm (3.1 in)
75 mm (3 in)
89 mm (3.5 in)
Monthly rainy days
16 days
16 days
15 days
Weather conditions
unpleasant
tolerable
pleasant
Climate in Llandudno →

Criccieth

In May Criccieth generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 9°C (48°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« April
May
June »
April
May
June
Max temperature
12°C (54°F)
15°C (59°F)
17°C (63°F)
Min temperature
6°C (43°F)
9°C (48°F)
11°C (52°F)
Monthly sun hours
135 hours
169 hours
151 hours
Monthly rainfall
96 mm (3.8 in)
94 mm (3.7 in)
104 mm (4.1 in)
Monthly rainy days
15 days
16 days
15 days
Weather conditions
unpleasant
tolerable
unpleasant
Climate in Criccieth →

Conwy

In May Conwy generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 8°C (46°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« April
May
June »
April
May
June
Max temperature
13°C (55°F)
16°C (61°F)
18°C (64°F)
Min temperature
5°C (41°F)
8°C (46°F)
11°C (52°F)
Monthly sun hours
135 hours
169 hours
151 hours
Monthly rainfall
81 mm (3.2 in)
77 mm (3 in)
92 mm (3.6 in)
Monthly rainy days
16 days
16 days
15 days
Weather conditions
unpleasant
tolerable
pleasant
Climate in Conwy →

Holyhead

In May Holyhead generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 9°C (48°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« April
May
June »
April
May
June
Max temperature
12°C (54°F)
15°C (59°F)
17°C (63°F)
Min temperature
7°C (45°F)
9°C (48°F)
12°C (54°F)
Monthly rainfall
71 mm (2.8 in)
65 mm (2.6 in)
72 mm (2.8 in)
Monthly rainy days
15 days
15 days
14 days
Weather conditions
unpleasant
tolerable
tolerable
Climate in Holyhead →

Bangor

In May Bangor generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 8°C (46°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« April
May
June »
April
May
June
Max temperature
13°C (55°F)
16°C (61°F)
18°C (64°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
86 mm (3.4 in)
84 mm (3.3 in)
93 mm (3.7 in)
Monthly rainy days
15 days
16 days
15 days
Weather conditions
unpleasant
tolerable
pleasant
Climate in Bangor →

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

Popular cities in May

Day & night temperatures, rainfall and average weather in Gwynedd in May.

City Weather Day temp Night temp Rainfall
Llandudno 15°C (59°F) 8°C (46°F) 75 mm (3 in)
Criccieth 15°C (59°F) 9°C (48°F) 94 mm (3.7 in)
Conwy 16°C (61°F) 8°C (46°F) 77 mm (3 in)
Holyhead 15°C (59°F) 9°C (48°F) 65 mm (2.6 in)
Bangor 16°C (61°F) 8°C (46°F) 84 mm (3.3 in)
Beaumaris 16°C (61°F) 8°C (46°F) 82 mm (3.2 in)

Gwynedd weather in May: frequently asked questions

What is the weather like in Gwynedd, the United Kingdom in May?

In May, Gwynedd, the United Kingdom generally has tolerable weather conditions. Llandudno sees daytime temperatures near 15°C (59°F), with nights cooling to roughly 8°C (46°F).

What is the average temperature in Gwynedd, the United Kingdom in May?

Llandudno averages a daytime maximum of 15°C (59°F) in May, with overnight lows close to 8°C (46°F).

Does Gwynedd, the United Kingdom get a lot of rain in May?

Rain is generally moderate to light in Gwynedd, the United Kingdom during May, with Llandudno averaging close to 75 mm (3 in).

Is May a Good Time to Visit Gwynedd, the United Kingdom?

Given the typically tolerable weather conditions in Llandudno, May might be a good time to visit Gwynedd, the United Kingdom. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, the best visiting conditions can be found in July offering mostly perfect weather in Llandudno. On the other hand, the months of January, February, March, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Gwynedd.

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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