Southern Peninsula (Keflavík)
December
Weather in Southern Peninsula for December 2025
Your guide to Southern Peninsula weather in December - trends and predictions
Expect heavy snowfall in Southern Peninsula during December, with an average of 19 snowy days.
According to Southern Peninsula snow forecast for December 2025, no snow is expected until the end of the month.So far, December 2025 in Southern Peninsula is slightly warmer than the historical average by 1.4 °C.
The forecast for the next days in Southern Peninsula predicts a temperature of 4.6 °C, which is cooler than the historical average.
In general, the average temperature in Southern Peninsula at the beginning of December is 3.9 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 5.4 °C by the end of December.
Snow Forecast ❄️
Temperatures
3
Dry days
9
Rainy days
19
Snow days
3°/0°
Temperatures
48 km/h
Avg max wind
71 %
Avg humidity
Southern Peninsula Weather December
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Temperatures trend during December in Southern Peninsula
See the weather trend as well as the moving average line
December weather in Southern Peninsula day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Sunny | 2° /0° | 0.7 mm | 0 cm | |
| 2 Dec. |  Overcast | 4° /-1° | 5.9 mm | 0.5 cm | |
| 3 Dec. |  Moderate snow | 4° /1° | 3.3 mm | 0.5 cm | |
| 4 Dec. |  Heavy snow | 4° /1° | 11.9 mm | 5 cm | |
| 5 Dec. |  Cloudy | 5° /1° | 6.2 mm | 3.4 cm | |
| 6 Dec. | Sunny | 4° /1° | 0.3 mm | 0.2 cm | |
| 7 Dec. |  Partly cloudy | 4° /2° | 0 mm | 0 cm | |
| 8 Dec. | Sunny | 6° /2° | 4.6 mm | 0 cm | |
| 9 Dec. | Sunny | 6° /2° | 1.7 mm | 0 cm | |
| 10 Dec. | Cloudy | 5° /3° | 0.4 mm | 0 cm | |
| 11 Dec. |  Moderate or heavy snow showers | 6° /3° | 7.3 mm | 0.2 cm | |
| 12 Dec. | Heavy snow | 6° /2° | 6.7 mm | 0.1 cm | |
| 13 Dec. |  Light sleet showers | 5° /2° | 7.8 mm | 0.3 cm | |
| 14 Dec. |  Blizzard | 6° /1° | 6.3 mm | 1 cm | |
| 15 Dec. | Light sleet showers | 4° /2° | 5.2 mm | 0.4 cm | |
| 16 Dec. | Light sleet showers | 5° /2° | 3.9 mm | 0.8 cm | |
| 17 Dec. | Moderate or heavy snow showers | 5° /2° | 8.1 mm | 2 cm | |
| 18 Dec. | Moderate or heavy snow showers | 5° /1° | 2.3 mm | 0.3 cm | |
| 19 Dec. | Light sleet showers | 5° /1° | 8.3 mm | 0 cm | |
| 20 Dec. |  Light rain shower | 6° /2° | 3.9 mm | 0.4 cm | |
| 21 Dec. |  Light snow showers | 4° /1° | 0.6 mm | 0.2 cm | |
| 22 Dec. | Moderate or heavy snow showers | 3° /0° | 5.8 mm | 1.1 cm | |
| 23 Dec. |  Light snow | 5° /0° | 7.9 mm | 0 cm | |
| 24 Dec. | Patchy light snow | 5° /1° | 5.3 mm | 0 cm | |
| 25 Dec. | Cloudy | 4° /1° | 4.9 mm | 0 cm | |
| 26 Dec. | Moderate or heavy snow showers | 5° /1° | 8.6 mm | 1.5 cm | |
| 27 Dec. | Heavy snow | 4° /1° | 7.2 mm | 2.4 cm | |
| 28 Dec. | Light snow | 4° /1° | 1.7 mm | 0.1 cm | |
| 29 Dec. | Patchy rain possible | 7° /6° | 0.8 mm | 0 cm | |
| 30 Dec. | Patchy rain possible | 7° /6° | 0.2 mm | 0 cm | |
| 31 Dec. | Patchy rain possible | 7° /3° | 0.2 mm | 0 cm | |
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Important Notice
Our weather forecast for Southern Peninsula in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Southern Peninsula forecast closer to your planned date for the most up-to-date weather information.
Change Month
Southern Peninsula in December - FAQ
What are the expected maximum and minimum temperatures in Southern Peninsula during December?
Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Southern Peninsula during December?
Significant rainfall exceeding 167.3 mm is expected in Southern Peninsula during December, occurring over more than 9 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Southern Peninsula in December 2025?
Southern Peninsula experiences an average snowfall of 30.25 cm during December, occurring over 19 days.
What are the typical wind conditions in Southern Peninsula during December?
The average wind speed in Southern Peninsula during December is 48 km/h, suggesting breezy to windy conditions, depending on your activities.
Southern Peninsula snow forecast December 2025
Track daily snowfall levels and discover Southern Peninsula’s snowy potential this December ❄️
On average, Southern Peninsula sees 19 snowy days during December, with approximately 30.3 cm of total snowfall.
December rainfall patterns in Southern Peninsula
Explore the daily rainfall trends and prepare for Southern Peninsulas December weather 💧
Typically, Southern Peninsula has 9 rainy days in December with a total of 167.3 mm of rainfall.
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