Which is the hottest month in Guernsey?

The hottest time of year in St Peter Port, Guernsey is normally August. Expect maximum daytime temperatures to reach 20°C.

Best time to visit Guernsey

Q: When is the best time to visit Guernsey?

The best time to visit Guernsey (St Peter Port) is July and August based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Q: Which month has the most rain in Guernsey?

In terms of rainfall, December is usually the wettest month in St Peter Port, Guernsey with 100mm on average. There are normally 19 days in December with some rain.

Q: When is it sunniest in Guernsey?

The sunniest time of year in St Peter Port, Guernsey is normally July with bright sunshine on average for 52% of daylight hours; that's 8 hours of sunshine per day.

Q: When is the sea warmest in Guernsey?

The sea is usually at its warmest in St Peter Port, Guernsey in August when the water temperature reaches 17°C.

Find the best time to visit Guernsey and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Guernsey by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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When is the best time to visit Guernsey?

The best time to visit Guernsey (St Peter Port) is July and August based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0
Jan
0
Feb
0.5
Mar
1.5
Apr
2
May
2.5
Jun
3.5
Jul
3.5
Aug
2
Sep
0.5
Oct
0
Nov
0
Dec

Change criteria

Max Day Temperature (°F)

48
Jan
46
Feb
50
Mar
54
Apr
59
May
63
Jun
66
Jul
68
Aug
64
Sep
59
Oct
54
Nov
50
Dec

Hours of Sunshine (daily)

2
Jan
3
Feb
4
Mar
6
Apr
8
May
8
Jun
8
Jul
7
Aug
6
Sep
4
Oct
2
Nov
2
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Guernsey, represented by St Peter Port, (St Peter Port) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C) | Imperial (°F)

Guernsey weather overview

Guernsey has a delightfully warm summer climate and enjoys mild, if rainy, winters. On the long summer days, between May and September, you can bask in an average of 8 hours of sunshine a day but, if you are planning a walk or a visit to the beach, take a cover-up as those sea breezes can be chilly. Rain falls mainly in the autumn and winter but can occur sporadically in the summer months. Winters are cool but rarely very cold.

What to pack for Guernsey weather

Take relatively warm clothing for the cool winter months and, in the summer, supplement beach wear and light clothing with a warm wrap, just in case. Be prepared for rain at any time of year.

More about Guernsey

Explore our complete guide to Guernsey with the latest travel advice for travellers and holidaymakers including official updates and local travel tips for Guernsey.

Essential travel guide
Travel guidance
Travel health
Travel features
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FAQs

Guernsey travel guide - essential info

Below is a beginner's guide to Guernsey with essential travel facts such as dominant language spoken, typical flight time from the UK and the local currency. You can also check whether visas are required and what plug adapter you need to pack.

Guernsey - quick facts
Flight time^✝	1 hours
Time difference	UK +0 hours
Language(s)	English
Currency	Guernsey Pound, British Pound
Electricity	G plug (230V)
Driving side	Left

Why visit Guernsey?

Considering a holiday to the Guernsey? Here are some of the very good reasons it makes such a wonderful holiday destination such as for its beaches to ensure you get the most out of your 2025/2026 escape.

Beaches

Guernsey tourist information

Visit Guernsey

✝ = Typical flight time from the UK.

Travelling to Guernsey?
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Guernsey travel guidance

Check the latest travel guidance and advice on visiting Guernsey from official government sources (in english) from around the world including entry requirements and travel restrictions.

No travel advice for Guernsey is currently available.

Learn more about the current safety and security risks from terrorism, natural disasters and more. Read about the local laws and customs to consider when travelling around Guernsey.

Note: UK FCDO - UK Foreign, Commonwealth & Development Office

Guernsey travel health

Find out more about staying safe when travelling to Guernsey with the latest guidance on required vaccinations and recommended medication to take with you.

How to stay safe & healthy in Guernsey - Fit for Travel, Public Health Scotland

Check out the general travel tips for staying safe and healthy in Guernsey, risks of preventable diseases and what to pack.

Note: CDC - Centers for Disease Control and Prevention

Guernsey travel features

Do you want to learn more about Guernsey? Read our latest features covering travel tips and insider destination guides on where to go and what to do in Guernsey.

We don't currently have any travel features on Guernsey. Discover more about holiday destinations around the world with this selection of general travel articles.

Guernsey FAQs

Read our frequently asked questions about travelling to Guernsey including the current entry restrictions, driving side, electrical plugs used and much more.

Which month has the most rain in Guernsey?

In terms of rainfall, January is usually the wettest month in St Peter Port, Guernsey with 0.0 inches on average. There are normally no days in January with some rain.

When is it sunniest in Guernsey?

The sunniest time of year in St Peter Port, Guernsey is normally January with bright sunshine on average for 0% of daylight hours; that's 0 hours of sunshine per day.

When is the sea warmest in Guernsey?

The sea is usually at its warmest in St Peter Port, Guernsey in January when the water temperature reaches 32°F.

What is the flight time to Guernsey from the UK?

The flight time to Guernsey from the UK is typically 1 hour.

What is the time difference between Guernsey and the UK?

The time difference between Guernsey and the UK is UK time+0 hours.

What is the main language spoken in Guernsey?

The main language spoken in Guernsey is English.

Learn a language for Guernsey with Rosetta Stone^*, Busuu^* and Rocket Languages^*.

What is the currency in Guernsey?

The currency in Guernsey is the Guernsey Pound (GGP) and the British Pound (GBP).

Which plugs are used in Guernsey?

Guernsey uses electrical plug type G (230 Volts) - the same as the UK.

Which side of the road do they drive on in Guernsey?

They drive on the left side of the road in Guernsey.

Guernsey travel deals

Holidays to Guernsey

Check out the latest deals, discount codes and special offers on holidays to Guernsey in 2025/2026. Pay low deposits and save with last minute holiday availability and free kids places.