Weather in Guernsey for December 2025
Until now, December 2025 in Guernsey has been nearly identical to the historical average, with a temperature of 12.2 °C (showing only a slight deviation of 0.1 °C).
The forecast for the next days in Guernsey predicts temperatures to be around 10 °C, close to the historical average.
In general, the average temperature in Guernsey at the beginning of December is 12.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 9.4 °C by the end of December.
Guernsey experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 136.8 mm.
Temperatures
Rain 🌧️
Guernsey Weather December
Temperatures trend during December in Guernsey
December weather in Guernsey day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Light rain shower | 12° /10° | 7.9 mm | 3 | |
| 2 Dec. | Light rain shower | 11° /8° | 4.1 mm | 3 | |
| 3 Dec. | Light rain shower | 11° /9° | 8 mm | 3 | |
| 4 Dec. | Light rain shower | 12° /9° | 8.2 mm | 3 | |
| 5 Dec. | Light rain shower | 13° /10° | 7.6 mm | 3 | |
| 6 Dec. | Patchy rain possible | 12° /9° | 1.5 mm | 3 | |
| 7 Dec. |  Moderate rain | 14° /9° | 12 mm | 3 | |
| 8 Dec. | Light rain shower | 12° /10° | 5.9 mm | 3 | |
| 9 Dec. |  Light rain | 12° /10° | 6.3 mm | 3 | |
| 10 Dec. |  Moderate or heavy rain with thunder | 12° /10° | 5.8 mm | 3 | |
| 11 Dec. | Light rain shower | 12° /10° | 1 mm | 3 | |
| 12 Dec. | Light rain shower | 11° /9° | 3 mm | 3 | |
| 13 Dec. | Light rain shower | 11° /8° | 1.9 mm | 3 | |
| 14 Dec. | Light rain shower | 12° /9° | 1.2 mm | 3 | |
| 15 Dec. | Patchy rain possible | 13° /10° | 1 mm | 3 | |
| 16 Dec. | Patchy rain possible | 12° /10° | 0.2 mm | 3 | |
| 17 Dec. | Patchy rain possible | 12° /9° | 1.2 mm | 3 | |
| 18 Dec. | Light rain | 13° /11° | 6 mm | 3 | |
| 19 Dec. | Light rain | 12° /9° | 3.6 mm | 3 | |
| 20 Dec. | Light rain shower | 11° /9° | 3.4 mm | 3 | |
| 21 Dec. | Patchy rain possible | 11° /10° | 2.1 mm | 0.1 | |
| 22 Dec. | Patchy rain possible | 12° /10° | 0.5 mm | 0.1 | |
| 23 Dec. | Patchy rain possible | 11° /9° | 0.6 mm | 0.1 | |
| 24 Dec. | Patchy rain possible | 10° /7° | 1.3 mm | 0 | |
| 25 Dec. | Patchy rain possible | 7° /3° | 0.5 mm | 0.1 | |
| 26 Dec. | Patchy rain possible | 9° /4° | 0.1 mm | 2 | |
| 27 Dec. | Patchy rain possible | 10° /9° | 0.2 mm | 2 | |
| 28 Dec. |  Partly cloudy | 11° /9° | 0 mm | 4 | |
| 29 Dec. |  Sunny | 10° /8° | 0 mm | 3 | |
| 30 Dec. | Patchy rain possible | 9° /8° | 0.1 mm | 2 | |
| 31 Dec. | Patchy rain possible | 10° /8° | 0.2 mm | 2 | |
| Next | |||||
Guide for Guernsey in December
In Guernsey, December marks the onset of winter, bringing with it cool and crisp weather conditions. At the beginning of the month, the island experiences relatively mild temperatures with an average high of 10° and a low of 6°.
The weather is often characterized by overcast skies and occasional rainfall, creating a damp and chilly atmosphere. Visitors can expect a mix of cloudy and sunny days, with a moderate breeze blowing in from the English Channel.
As the month progresses, the temperatures in Guernsey tend to drop further, with the average high reaching 8° and the low hovering around 4°. The island may experience more frequent rainfall towards the end of December, and occasional fog can also be expected.
Despite the cooler temperatures, Guernsey's natural beauty remains enchanting, offering a serene and peaceful setting for travelers seeking a tranquil winter escape.
Overall, December in Guernsey presents a wonderful opportunity to explore the island's charming villages, historic sites, and stunning coastal landscapes, albeit with the need for warm layers and waterproof attire.
Guernsey in December - FAQ
December rainfall patterns in Guernsey
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