Glamorgan Weather in July

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

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Cardiff Merthyr Tydfil Bridgend The Mumbles

Planning a trip to Glamorgan, the United Kingdom this July? Here's what you need to know about the weather:

What to Expect in Glamorgan in July

Glamorgan, the United Kingdom is a region in the United Kingdom. July in Glamorgan generally has pleasant temperatures, with precipitation levels ranging from moderate to high. The month of July is in the summer season.

Temperatures

The average maximum temperatures are pleasant and range from 19°C (66°F) in Llangennith to 21°C (70°F) in Penarth. Nighttime temperatures generally drop to 14°C (57°F) in Penarth and 14°C (57°F) in Llangennith.

For a closer look at conditions across Glamorgan, the United Kingdom, refer to the map below.

Precipitation

In July, precipitation varies across different areas. From moderate rainfall in Penarth with an average of 79 mm (3.1 in) to high rainfall in Crynant with 112 mm (4.4 in).

Average sunshine

Plenty of sunshine can be expected in numerous places in July. Cardiff typically receives 202 hours of sunlight, making it ideal for those seeking sunny weather.

Explore Glamorgan by month

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

January9°C (48°F) February9°C (48°F) March11°C (52°F) April13°C (55°F) May16°C (61°F) June18°C (64°F) This monthJuly20°C (68°F) August20°C (68°F) September18°C (64°F) October15°C (59°F) November12°C (54°F) December10°C (50°F)
Best Time to Visit Glamorgan →

Best Places to Visit in Glamorgan in July

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

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 Glamorgan

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

Temperature range in Glamorgan (July)

Precipitation variation in Glamorgan (July)

Cardiff

In July Cardiff generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« June
July
August »
June
July
August
Max temperature
18°C (64°F)
20°C (68°F)
20°C (68°F)
Min temperature
12°C (54°F)
14°C (57°F)
14°C (57°F)
Monthly sun hours
194 hours
202 hours
184 hours
Monthly rainfall
82 mm (3.2 in)
85 mm (3.3 in)
98 mm (3.9 in)
Monthly rainy days
14 days
13 days
15 days
Weather conditions
pleasant
perfect
perfect
Climate in Cardiff →

Merthyr Tydfil

In July Merthyr Tydfil 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.

« June
July
August »
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
194 hours
202 hours
184 hours
Monthly rainfall
95 mm (3.7 in)
94 mm (3.7 in)
100 mm (3.9 in)
Monthly rainy days
16 days
14 days
16 days
Weather conditions
pleasant
perfect
pleasant
Climate in Merthyr Tydfil →

Bridgend

In July Bridgend generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« June
July
August »
June
July
August
Max temperature
18°C (64°F)
20°C (68°F)
20°C (68°F)
Min temperature
12°C (54°F)
14°C (57°F)
14°C (57°F)
Monthly sun hours
194 hours
202 hours
184 hours
Monthly rainfall
85 mm (3.3 in)
88 mm (3.5 in)
100 mm (3.9 in)
Monthly rainy days
15 days
14 days
16 days
Weather conditions
pleasant
perfect
pleasant
Climate in Bridgend →

The Mumbles

In July The Mumbles 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.

« June
July
August »
June
July
August
Max temperature
18°C (64°F)
19°C (66°F)
20°C (68°F)
Min temperature
12°C (54°F)
14°C (57°F)
14°C (57°F)
Monthly sun hours
194 hours
202 hours
184 hours
Monthly rainfall
92 mm (3.6 in)
96 mm (3.8 in)
110 mm (4.3 in)
Monthly rainy days
15 days
13 days
16 days
Weather conditions
pleasant
pleasant
pleasant
Climate in The Mumbles →

Barry

In July Barry generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

« June
July
August »
June
July
August
Max temperature
18°C (64°F)
20°C (68°F)
20°C (68°F)
Min temperature
12°C (54°F)
14°C (57°F)
14°C (57°F)
Monthly sun hours
194 hours
202 hours
184 hours
Monthly rainfall
81 mm (3.2 in)
83 mm (3.3 in)
96 mm (3.8 in)
Monthly rainy days
14 days
13 days
15 days
Weather conditions
pleasant
perfect
perfect
Climate in Barry →

Is your destination not in the list? Have a look at all destinations in Glamorgan, 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 Glamorgan in July.

City Weather Day temp Night temp Rainfall
Cardiff 20°C (68°F) 14°C (57°F) 85 mm (3.3 in)
Merthyr Tydfil 20°C (68°F) 12°C (54°F) 94 mm (3.7 in)
Bridgend 20°C (68°F) 14°C (57°F) 88 mm (3.5 in)
The Mumbles 19°C (66°F) 14°C (57°F) 96 mm (3.8 in)
Barry 20°C (68°F) 14°C (57°F) 83 mm (3.3 in)
Cowbridge 20°C (68°F) 14°C (57°F) 86 mm (3.4 in)

Glamorgan weather in July: frequently asked questions

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

Expect perfect weather across Glamorgan, the United Kingdom in July. The popular destination of Cardiff averages 20°C (68°F) by day and 14°C (57°F) at night during this summer month.

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

In Cardiff, the average daytime high in July is 20°C (68°F), while nighttime temperatures drop to around 14°C (57°F).

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

July is on the drier side in Glamorgan, the United Kingdom. Cardiff averages only about 85 mm (3.3 in), with most days staying dry.

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

We believe that July is one of the best times to visit Glamorgan, the United Kingdom with overall perfect weather in Cardiff. However, the weather conditions may vary depending on your destination.

Generally speaking, July and August provide perfect weather in Cardiff. On the other hand, the weather in January, February, November and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Glamorgan.

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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