Guernsey Weather in January

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

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St Peter Port St Martin Guernsey St Saviour Guernsey Castel

Planning a journey to Guernsey, the United Kingdom this January and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in Guernsey in January

Guernsey, the United Kingdom is a region in the United Kingdom. January in Guernsey generally has cold temperatures, with high precipitation.

Temperatures

You can expect cold maximum daytime temperatures of around 11°C (52°F) and nighttime temperatures around 8°C (46°F) in St Peter Port.

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

Precipitation

January is a rainy month with an average rainfall of around 108 mm (4.3 in) in St Peter Port.

Average sunshine

Sunshine is more restricted in many locations in January. St Peter Port sees roughly 63 hours of sunlight. Our weather planner can help you find destinations with more sunshine if needed.

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 January

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 January for some of the most popular destinations in Guernsey, the United Kingdom?

Temperature range in Guernsey (January)

Precipitation variation in Guernsey (January)

St Peter Port

In January St Peter Port generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 8°C (46°F) and high monthly rainfall. So on average the conditions are less favorable that month.

« December
January
February »
December
January
February
Max temperature
12°C (54°F)
11°C (52°F)
11°C (52°F)
Min temperature
9°C (48°F)
8°C (46°F)
7°C (45°F)
Monthly sun hours
61 hours
63 hours
87 hours
Monthly rainfall
131 mm (5.2 in)
108 mm (4.3 in)
91 mm (3.6 in)
Monthly rainy days
19 days
20 days
16 days
Weather conditions
less favorable
less favorable
mixed
Climate in St Peter Port →

St Martin Guernsey

In January St Martin Guernsey generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 8°C (46°F) and high monthly rainfall. So on average the conditions are less favorable that month.

« December
January
February »
December
January
February
Max temperature
12°C (54°F)
11°C (52°F)
11°C (52°F)
Min temperature
9°C (48°F)
8°C (46°F)
7°C (45°F)
Monthly sun hours
61 hours
63 hours
87 hours
Monthly rainfall
131 mm (5.2 in)
108 mm (4.3 in)
91 mm (3.6 in)
Monthly rainy days
19 days
20 days
16 days
Weather conditions
less favorable
less favorable
mixed
Climate in St Martin Guernsey →

St Saviour Guernsey

In January St Saviour Guernsey generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 8°C (46°F) and high monthly rainfall. So on average the conditions are less favorable that month.

« December
January
February »
December
January
February
Max temperature
12°C (54°F)
11°C (52°F)
11°C (52°F)
Min temperature
9°C (48°F)
8°C (46°F)
7°C (45°F)
Monthly sun hours
61 hours
63 hours
87 hours
Monthly rainfall
131 mm (5.2 in)
109 mm (4.3 in)
92 mm (3.6 in)
Monthly rainy days
19 days
20 days
16 days
Weather conditions
less favorable
less favorable
mixed
Climate in St Saviour Guernsey →

Castel

In January Castel generally has low temperatures with maximum daytime temperatures around 11°C (52°F), minimum nighttime temperatures around 8°C (46°F) and high monthly rainfall. So on average the conditions are less favorable that month.

« December
January
February »
December
January
February
Max temperature
12°C (54°F)
11°C (52°F)
11°C (52°F)
Min temperature
9°C (48°F)
8°C (46°F)
7°C (45°F)
Monthly sun hours
61 hours
63 hours
87 hours
Monthly rainfall
131 mm (5.2 in)
109 mm (4.3 in)
92 mm (3.6 in)
Monthly rainy days
19 days
20 days
16 days
Weather conditions
less favorable
less favorable
mixed
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 January extremes

Notable January 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.

  • Based on our data, the coldest January night in the United Kingdom dropped to -20°C (-4°F) in Birmingham on January 14, 1982.

Popular cities in January

Day & night temperatures, rainfall and average weather in Guernsey in January.

City Weather Day temp Night temp Rainfall
St Peter Port 11°C (52°F) 8°C (46°F) 108 mm (4.3 in)
St Martin Guernsey 11°C (52°F) 8°C (46°F) 108 mm (4.3 in)
St Saviour Guernsey 11°C (52°F) 8°C (46°F) 109 mm (4.3 in)
Castel 11°C (52°F) 8°C (46°F) 109 mm (4.3 in)

Guernsey weather in January: frequently asked questions

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

In January, Guernsey, the United Kingdom generally has less favorable weather conditions. St Peter Port sees daytime temperatures near 11°C (52°F), with nights cooling to roughly 8°C (46°F).

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

In St Peter Port, the average daytime high in January is 11°C (52°F), while nighttime temperatures drop to around 8°C (46°F).

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

Yes, January tends to be a wetter month in Guernsey, the United Kingdom. Average rainfall in St Peter Port sits around 108 mm (4.3 in).

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

In our opinion, January may not be the ideal time to visit Guernsey, the United Kingdom due to the typically less favorable weather in St Peter Port.

Generally speaking, the best visiting conditions can be found in July, August and September offering mostly very good weather in St Peter Port. On the other hand, the weather in January and December tend to be less favorable.

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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