Gwynedd Weather in August

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

Planning a getaway to Gwynedd, the United Kingdom this August and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Gwynedd in August

Gwynedd, the United Kingdom is a region in the United Kingdom. August in Gwynedd generally has temperatures that range from mild to pleasant, with precipitation levels ranging from moderate to high. August falls during the summer season.

Temperatures

During the day temperatures vary from mild in Aberdaron at 18°C (64°F) to pleasant in Llangefni at 20°C (68°F). At night it cools down to 13°C (55°F) in Llangefni and 15°C (59°F) in Aberdaron.

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

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Cemaes Bay with an average of 80 mm (3.1 in) to high rainfall in Trevor with 130 mm (5.1 in).

Average sunshine

Sunshine is fairly consistent across many areas. Llandudno receives about 145 hours of sunlight in August, providing a good balance between sunny spells and cloud cover. If you're after more sunshine hours, take a look at our weather planner for other sun-rich destinations worldwide.

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)

Best Places to Visit in Gwynedd in August

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

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 August for some of the most popular destinations in Gwynedd, the United Kingdom?

Temperature range in Gwynedd (August)

Precipitation variation in Gwynedd (August)

Llandudno

In August Llandudno generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 13°C (55°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

July
August
September
Max temperature
20°C (68°F)
19°C (66°F)
18°C (64°F)
Min temperature
13°C (55°F)
13°C (55°F)
11°C (52°F)
Monthly sun hours
155 hours
145 hours
111 hours
Monthly rainfall
83 mm (3.3 in)
89 mm (3.5 in)
90 mm (3.5 in)
Monthly rainy days
14 days
16 days
17 days
Weather conditions

Criccieth

In August Criccieth generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 13°C (55°F) and high monthly rainfall. So on average the conditions are tolerable that month.

July
August
September
Max temperature
18°C (64°F)
18°C (64°F)
17°C (63°F)
Min temperature
13°C (55°F)
13°C (55°F)
12°C (54°F)
Monthly sun hours
155 hours
145 hours
111 hours
Monthly rainfall
108 mm (4.3 in)
123 mm (4.8 in)
129 mm (5.1 in)
Monthly rainy days
14 days
16 days
17 days
Weather conditions

Conwy

In August Conwy generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 13°C (55°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

July
August
September
Max temperature
20°C (68°F)
20°C (68°F)
18°C (64°F)
Min temperature
13°C (55°F)
13°C (55°F)
11°C (52°F)
Monthly sun hours
155 hours
145 hours
111 hours
Monthly rainfall
85 mm (3.3 in)
89 mm (3.5 in)
87 mm (3.4 in)
Monthly rainy days
14 days
16 days
17 days
Weather conditions

Holyhead

In August Holyhead generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

July
August
September
Max temperature
19°C (66°F)
19°C (66°F)
18°C (64°F)
Min temperature
14°C (57°F)
14°C (57°F)
13°C (55°F)
Monthly rainfall
69 mm (2.7 in)
81 mm (3.2 in)
89 mm (3.5 in)
Monthly rainy days
13 days
16 days
16 days
Weather conditions

Bangor

In August Bangor generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 12°C (54°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

July
August
September
Max temperature
20°C (68°F)
20°C (68°F)
18°C (64°F)
Min temperature
12°C (54°F)
12°C (54°F)
10°C (50°F)
Monthly sun hours
155 hours
145 hours
111 hours
Monthly rainfall
88 mm (3.5 in)
96 mm (3.8 in)
94 mm (3.7 in)
Monthly rainy days
14 days
16 days
17 days
Weather conditions

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

Popular cities in August

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

City Weather Day temp Night temp Rainfall
Llandudno 19°C (66°F) 13°C (55°F) 89 mm (3.5 in)
Criccieth 18°C (64°F) 13°C (55°F) 123 mm (4.8 in)
Conwy 20°C (68°F) 13°C (55°F) 89 mm (3.5 in)
Holyhead 19°C (66°F) 14°C (57°F) 81 mm (3.2 in)
Bangor 20°C (68°F) 12°C (54°F) 96 mm (3.8 in)
Beaumaris 20°C (68°F) 12°C (54°F) 94 mm (3.7 in)

Gwynedd weather in August: frequently asked questions

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

Gwynedd, the United Kingdom typically experiences pleasant weather in August, part of the summer season. Daytime highs in Llandudno average around 19°C (66°F), and temperatures drop to about 13°C (55°F) at night.

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

Average temperatures in Gwynedd, the United Kingdom during August range from a nighttime low near 13°C (55°F) to a daytime high around 19°C (66°F) in Llandudno.

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

Rain is generally moderate to light in Gwynedd, the United Kingdom during August, with Llandudno averaging close to 89 mm (3.5 in).

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

In our opinion, August is a good time to visit Gwynedd, the United Kingdom with overall pleasant weather in Llandudno. However, the weather conditions may vary depending on your destination.

Generally speaking, the best visiting conditions can be found in July offering mostly perfect weather in Llandudno. In contrast, 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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