Gwynedd Weather in July

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

Planning a journey to Gwynedd, the United Kingdom this July 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 July

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

Temperatures

During the day temperatures vary from mild in Aberdaron at 17°C (63°F) to pleasant in Llanfairfechan at 20°C (68°F). At night it cools down to 12°C (54°F) in Llanfairfechan and 14°C (57°F) in Aberdaron. On average, July is the month with the highest temperature of the year in Gwynedd, the United Kingdom.

For specific regional insights in Gwynedd, the United Kingdom, refer to the map provided below.

Precipitation

In July, precipitation varies across different areas. From moderate rainfall in Cemaes Bay with an average of 68 mm (2.7 in) to high rainfall in Trevor with 109 mm (4.3 in).

Average sunshine

Sunshine is fairly consistent across many areas. Llandudno receives about 155 hours of sunlight in July, 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 July

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

Temperature range in Gwynedd (July)

Precipitation variation in Gwynedd (July)

Llandudno

In July Llandudno 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 excellent that month.

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

Criccieth

In July 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 good that month.

June
July
August
Max temperature
17°C (63°F)
18°C (64°F)
18°C (64°F)
Min temperature
11°C (52°F)
13°C (55°F)
13°C (55°F)
Monthly sun hours
151 hours
155 hours
145 hours
Monthly rainfall
104 mm (4.1 in)
108 mm (4.3 in)
123 mm (4.8 in)
Monthly rainy days
15 days
14 days
16 days
Weather conditions

Conwy

In July 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 excellent that month.

June
July
August
Max temperature
18°C (64°F)
20°C (68°F)
20°C (68°F)
Min temperature
11°C (52°F)
13°C (55°F)
13°C (55°F)
Monthly sun hours
151 hours
155 hours
145 hours
Monthly rainfall
92 mm (3.6 in)
85 mm (3.3 in)
89 mm (3.5 in)
Monthly rainy days
15 days
14 days
16 days
Weather conditions

Holyhead

In July 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 very good that month.

June
July
August
Max temperature
17°C (63°F)
19°C (66°F)
19°C (66°F)
Min temperature
12°C (54°F)
14°C (57°F)
14°C (57°F)
Monthly rainfall
72 mm (2.8 in)
69 mm (2.7 in)
81 mm (3.2 in)
Monthly rainy days
14 days
13 days
16 days
Weather conditions

Bangor

In July 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 excellent that month.

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

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

In our records: the United Kingdom July extremes

Notable July records observed across cities in the United Kingdom in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the warmest July day in the United Kingdom reached 39°C (102°F) in Nottingham on July 19, 2022.

Popular cities in July

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

City Weather Day temp Night temp Rainfall
Llandudno 20°C (68°F) 13°C (55°F) 83 mm (3.3 in)
Criccieth 18°C (64°F) 13°C (55°F) 108 mm (4.3 in)
Conwy 20°C (68°F) 13°C (55°F) 85 mm (3.3 in)
Holyhead 19°C (66°F) 14°C (57°F) 69 mm (2.7 in)
Bangor 20°C (68°F) 12°C (54°F) 88 mm (3.5 in)
Beaumaris 20°C (68°F) 12°C (54°F) 87 mm (3.4 in)

Gwynedd weather in July: frequently asked questions

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

July in Gwynedd, the United Kingdom brings excellent weather. In Llandudno, daytime temperatures are typically around 20°C (68°F) and nighttime lows hover near 13°C (55°F).

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

Daytime temperatures in Llandudno peak at roughly 20°C (68°F) in July, dropping to about 13°C (55°F) overnight.

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

July is on the drier side in Gwynedd, the United Kingdom. Llandudno averages only about 83 mm (3.3 in), with most days staying dry.

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

We consider July to be one of the best times to travel to Gwynedd, the United Kingdom. Typically, the climate in Llandudno is excellent. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, July provides excellent weather in Llandudno. On the other hand, the weather in January, February, March, November and December tend to be less favorable.

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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