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Guernsey Weather in January
January in Guernsey brings low temperatures around 11°C (52°F) during the day, dropping to 8°C (46°F) at night, with quite a bit of rainfall expected, averaging around 109 mm (4.3 in) for the month.
Rainfall in Guernsey in January
Historically, the month has about 20 days of rain, averaging 109 mm (4.3 in) in total. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Guernsey in January
Guernsey in January gets highs of 11°C (52°F) during the day and drops to 8°C (46°F) at night. It stays cool throughout the day, so warm layers are a good idea from morning to evening. At 8°C (46°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Guernsey in January
The city usually sees around 63 hours of sunlight, indicating fewer sunny days.If you prefer dry days with pleasant temperatures, January may not be the ideal month to visit Guernsey. Our weather planner can help you explore destinations with more pleasant weather conditions.
Guernsey Temperature in January
Min Temperature
8°C (46°F)
Max Temperature
11°C (52°F)
Chance of Rain
66%
Precipitation
109 mm (4.3 in)
Rainy days
20 days
Sunshine
63 hours
Percentage Sunshine
22%
Guernsey Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Guernsey - and find the best time to visit.
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Guernsey typically stay consistent throughout January, with daily highs averaging around 11°C (52°F). Nights are cold, with lows around 5°C (41°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather records for Guernsey in January
Browse day-by-day weather records for Guernsey spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Guernsey historical weather extremes in January
Based on 25 years of weather observations in Guernsey between 2000 and 2025, these are the recorded extremes.
- The hottest January day on record in Guernsey reached 13°C (55°F) (January 2, 2024).
- On January 9, 2010, Guernsey saw its coldest January day with temperatures maxing out at 2°C (36°F).
- The coldest night in January in Guernsey was on January 9, 2009, with a minimum of -3°C (27°F).
Best Places in the United Kingdom in January
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in January →
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).
What to Wear in Guernsey in January
The weather can be unpredictable in January, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.
What To Do in Guernsey in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming4/10 -
Cycling5/10 -
Walking5/10 -
Camping3/10 -
Outdoor sports5/10
Guernsey 3-Day Forecast
More climate data for Guernsey
See the full Guernsey climate overview or explore weather in the United Kingdom.
Popular in January
Where to go in January - average daytime high across popular destinations.
Torquay
10°C (50°F) Bath9°C (48°F) London9°C (48°F) York8°C (46°F) Blackpool9°C (48°F) Edinburgh8°C (46°F) Glasgow8°C (46°F) Manchester8°C (46°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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