Guernsey Weather in July

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

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St Peter Port St Martin Guernsey St Saviour Guernsey Castel

Are you planning a trip a to Guernsey, the United Kingdom in July and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in Guernsey in July

Guernsey, the United Kingdom is a region in the United Kingdom. July in Guernsey generally has pleasant temperatures, with moderate precipitation.

Temperatures

You can expect pleasant maximum daytime temperatures of around 18°C (64°F) and nighttime temperatures around 15°C (59°F) in St Peter Port.

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

Precipitation

July is a moderate rainy month with an average rainfall of around 41 mm (1.6 in) in St Peter Port. Based on our climate data it is the driest month of the year in St Peter Port.

Average sunshine

Most destinations offer generous amounts of sunshine this July. For example, St Peter Port gets approximately 252 hours of sunlight, perfect for anyone wanting bright, sunny days.

Explore Guernsey by month

Pick a month to see the average temperature, rainfall and sunshine in Guernsey — and find the best time to visit. (based on St Peter Port)

January11°C (52°F) February11°C (52°F) March11°C (52°F) April12°C (54°F) May14°C (57°F) June16°C (61°F) This monthJuly18°C (64°F) August19°C (66°F) September19°C (66°F) October17°C (63°F) November14°C (57°F) December12°C (54°F)
Best Time to Visit Guernsey →

Best Places to Visit in Guernsey in July

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

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 Guernsey

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

Temperature range in Guernsey (July)

Precipitation variation in Guernsey (July)

St Peter Port

In July St Peter Port generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 15°C (59°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« June
July
August »
June
July
August
Max temperature
16°C (61°F)
18°C (64°F)
19°C (66°F)
Min temperature
13°C (55°F)
15°C (59°F)
16°C (61°F)
Monthly sun hours
248 hours
252 hours
232 hours
Monthly rainfall
48 mm (1.9 in)
41 mm (1.6 in)
55 mm (2.2 in)
Monthly rainy days
11 days
10 days
11 days
Weather conditions
tolerable
pleasant
pleasant
Climate in St Peter Port →

St Martin Guernsey

In July St Martin Guernsey generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 15°C (59°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« June
July
August »
June
July
August
Max temperature
16°C (61°F)
18°C (64°F)
19°C (66°F)
Min temperature
13°C (55°F)
15°C (59°F)
16°C (61°F)
Monthly sun hours
248 hours
252 hours
232 hours
Monthly rainfall
48 mm (1.9 in)
41 mm (1.6 in)
56 mm (2.2 in)
Monthly rainy days
11 days
10 days
11 days
Weather conditions
tolerable
pleasant
pleasant
Climate in St Martin Guernsey →

St Saviour Guernsey

In July St Saviour Guernsey generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 15°C (59°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« June
July
August »
June
July
August
Max temperature
16°C (61°F)
18°C (64°F)
19°C (66°F)
Min temperature
13°C (55°F)
15°C (59°F)
16°C (61°F)
Monthly sun hours
248 hours
252 hours
232 hours
Monthly rainfall
48 mm (1.9 in)
42 mm (1.7 in)
56 mm (2.2 in)
Monthly rainy days
11 days
10 days
11 days
Weather conditions
tolerable
pleasant
pleasant
Climate in St Saviour Guernsey →

Castel

In July Castel generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 15°C (59°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« June
July
August »
June
July
August
Max temperature
16°C (61°F)
18°C (64°F)
19°C (66°F)
Min temperature
13°C (55°F)
15°C (59°F)
16°C (61°F)
Monthly sun hours
248 hours
252 hours
232 hours
Monthly rainfall
48 mm (1.9 in)
41 mm (1.6 in)
56 mm (2.2 in)
Monthly rainy days
11 days
10 days
11 days
Weather conditions
tolerable
pleasant
pleasant
Climate in Castel →

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

City Weather Day temp Night temp Rainfall
St Peter Port 18°C (64°F) 15°C (59°F) 41 mm (1.6 in)
St Martin Guernsey 18°C (64°F) 15°C (59°F) 41 mm (1.6 in)
St Saviour Guernsey 18°C (64°F) 15°C (59°F) 42 mm (1.7 in)
Castel 18°C (64°F) 15°C (59°F) 41 mm (1.6 in)

Guernsey weather in July: frequently asked questions

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

Expect pleasant weather across Guernsey, the United Kingdom in July. The popular destination of St Peter Port averages 18°C (64°F) by day and 15°C (59°F) at night during this month.

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

Daytime temperatures in St Peter Port peak at roughly 18°C (64°F) in July, dropping to about 15°C (59°F) overnight.

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

Not particularly. St Peter Port averages just 41 mm (1.6 in) of rain in July, making it a mostly dry month for Guernsey, the United Kingdom.

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

We believe that July is one of the best times to visit Guernsey, the United Kingdom with overall pleasant weather in St Peter Port. It's worth noting that weather conditions might differ depending on the location you visit.

On average, the best time to visit Guernsey, the United Kingdom is in July, August and September with generally pleasant weather in St Peter Port. On the other hand, the weather in January and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Guernsey.

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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