Last updated: June 24, 2025
In December, the average temperature in Dunkirk, United States hovers around 2°C (35°F). However, temperatures can swing dramatically, with a minimum of -23°C (-10°F) and a maximum of 17°C (64°F). Visitors can expect 64 mm (2.5 in) of precipitation over approximately 9 days, and the air tends to be quite humid, with an average humidity level of 86%.
In December in Dunkirk, the average temperature is 2°C (35°F). The maximum can reach 17°C (64°F), while the minimum can drop to as low as -23°C (-10°F). It's advisable to pack layers and be prepared for a wide range of temperatures if you plan to travel during this time.
In Dunkirk in December, the precipitation amount is 64 mm (2.5 in) over a span of 9 days.
In Dunkirk in December humidity is 86%. With an average temperature of 2°C (35°F), this humidity feels like a damp chill that seeps into your bones, making traveling quite uncomfortable as your clothes cling to you and the cold air cuts through any warmth you try to find.
In Dunkirk in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Dunkirk, you can visit Hourly UV Index in Dunkirk.
UV Risk Categories
Weather in Dunkirk varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Dunkirk, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 75 mm (3.0 inches) | 85% | moderate |
| February Weather | -1°C (31°F) | 79 mm (3.1 inches) | 85% | moderate |
| March Weather | 5°C (42°F) | 102 mm (4.0 inches) | 86% | high |
| April Weather | 10°C (51°F) | 96 mm (3.8 inches) | 87% | very high |
| May Weather | 17°C (64°F) | 158 mm (6.2 inches) | 81% | very high |
| June Weather | 23°C (73°F) | 103 mm (4.1 inches) | 82% | very high |
| July Weather | 25°C (77°F) | 101 mm (4.0 inches) | 81% | very high |
| August Weather | 23°C (74°F) | 105 mm (4.1 inches) | 79% | very high |
| September Weather | 21°C (69°F) | 63 mm (2.5 inches) | 78% | very high |
| October Weather | 14°C (57°F) | 107 mm (4.2 inches) | 81% | high |
| November Weather | 5°C (41°F) | 76 mm (3.0 inches) | 89% | moderate |
| December Weather | 2°C (35°F) | 64 mm (2.5 inches) | 86% | low |