Guernsey Weather in December

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

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St Peter Port St Martin Guernsey St Saviour Guernsey Castel

Planning a getaway to Guernsey, the United Kingdom this December and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Guernsey in December

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

Temperatures

You can expect mild maximum daytime temperatures of around 12°C (54°F) and nighttime temperatures around 9°C (48°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

December is a rainy month with an average rainfall of around 131 mm (5.2 in) in St Peter Port.

Average sunshine

Sunshine is more restricted in many locations in December. St Peter Port sees roughly 61 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 December

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

Temperature range in Guernsey (December)

Precipitation variation in Guernsey (December)

St Peter Port

In December St Peter Port generally has moderate temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
14°C (57°F)
12°C (54°F)
11°C (52°F)
Min temperature
11°C (52°F)
9°C (48°F)
8°C (46°F)
Monthly sun hours
82 hours
61 hours
63 hours
Monthly rainfall
131 mm (5.2 in)
131 mm (5.2 in)
108 mm (4.3 in)
Monthly rainy days
18 days
19 days
20 days
Weather conditions
unpleasant
poor
poor
Climate in St Peter Port →

St Martin Guernsey

In December St Martin Guernsey generally has moderate temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
14°C (57°F)
12°C (54°F)
11°C (52°F)
Min temperature
11°C (52°F)
9°C (48°F)
8°C (46°F)
Monthly sun hours
82 hours
61 hours
63 hours
Monthly rainfall
131 mm (5.2 in)
131 mm (5.2 in)
108 mm (4.3 in)
Monthly rainy days
18 days
19 days
20 days
Weather conditions
unpleasant
poor
poor
Climate in St Martin Guernsey →

St Saviour Guernsey

In December St Saviour Guernsey generally has moderate temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
14°C (57°F)
12°C (54°F)
11°C (52°F)
Min temperature
11°C (52°F)
9°C (48°F)
8°C (46°F)
Monthly sun hours
82 hours
61 hours
63 hours
Monthly rainfall
131 mm (5.2 in)
131 mm (5.2 in)
109 mm (4.3 in)
Monthly rainy days
18 days
19 days
20 days
Weather conditions
unpleasant
poor
poor
Climate in St Saviour Guernsey →

Castel

In December Castel generally has moderate temperatures with maximum daytime temperatures around 12°C (54°F), minimum nighttime temperatures around 9°C (48°F) and high monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
14°C (57°F)
12°C (54°F)
11°C (52°F)
Min temperature
11°C (52°F)
9°C (48°F)
8°C (46°F)
Monthly sun hours
82 hours
61 hours
63 hours
Monthly rainfall
131 mm (5.2 in)
131 mm (5.2 in)
109 mm (4.3 in)
Monthly rainy days
18 days
19 days
20 days
Weather conditions
unpleasant
poor
poor
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 December extremes

Notable December 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 coldest December daytime high in the United Kingdom was -10°C (14°F) in Glasgow on December 29, 1995.
  • From our sources, the wettest December day in the United Kingdom brought 301 mm (12 in) in Belfast on December 4, 1982.

Popular cities in December

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

City Weather Day temp Night temp Rainfall
St Peter Port 12°C (54°F) 9°C (48°F) 131 mm (5.2 in)
St Martin Guernsey 12°C (54°F) 9°C (48°F) 131 mm (5.2 in)
St Saviour Guernsey 12°C (54°F) 9°C (48°F) 131 mm (5.2 in)
Castel 12°C (54°F) 9°C (48°F) 131 mm (5.2 in)

Guernsey weather in December: frequently asked questions

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

Expect poor weather across Guernsey, the United Kingdom in December. The popular destination of St Peter Port averages 12°C (54°F) by day and 9°C (48°F) at night during this month.

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

Average temperatures in Guernsey, the United Kingdom during December range from a nighttime low near 9°C (48°F) to a daytime high around 12°C (54°F) in St Peter Port.

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

Yes, December tends to be a wetter month in Guernsey, the United Kingdom. Average rainfall in St Peter Port sits around 131 mm (5.2 in).

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

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

Generally speaking, the best visiting conditions can be found in July, August and September offering mostly pleasant weather in St Peter Port. On the other hand, the months of January and December tend to have poor weather conditions.

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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