Last updated: June 24, 2025
In December, the average temperature in Dunkirk, United States hovers around 1°C (35°F), with a minimum that can dip to -12°C (11°F) and a maximum reaching 15°C (58°F). This month sees significant rainfall, with 139 mm (5.5 in) of precipitation over approximately 19 days. Expect a high average humidity of 87%, contributing to the chilly and damp atmosphere.
In December in Dunkirk, the average temperature is 1°C (35°F). The maximum can reach 15°C (58°F), and the minimum can be as low as -12°C (11°F). Travelers should prepare for a wide range of temperatures, ensuring they pack both warm clothing for the chilly evenings and lighter layers for the milder days.
In Dunkirk in December, the precipitation amount is 139 mm (5.5 in) over the course of 19 days.
In Dunkirk in December humidity is 87%. With an average temperature of 1°C (35°F), this humidity feels like a chilling dampness that seeps into your bones, making travel feel particularly uncomfortable as the cold air clings to your skin and makes each step feel heavier.
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) | 106 mm (4.2 inches) | 91% | moderate |
| February Weather | -1°C (30°F) | 108 mm (4.3 inches) | 91% | moderate |
| March Weather | 1°C (34°F) | 101 mm (4.0 inches) | 88% | high |
| April Weather | 5°C (42°F) | 125 mm (4.9 inches) | 88% | very high |
| May Weather | 12°C (53°F) | 117 mm (4.6 inches) | 82% | very high |
| June Weather | 18°C (64°F) | 113 mm (4.4 inches) | 79% | very high |
| July Weather | 22°C (71°F) | 135 mm (5.3 inches) | 77% | very high |
| August Weather | 21°C (71°F) | 91 mm (3.6 inches) | 72% | very high |
| September Weather | 19°C (66°F) | 86 mm (3.4 inches) | 76% | very high |
| October Weather | 13°C (56°F) | 169 mm (6.7 inches) | 83% | high |
| November Weather | 5°C (42°F) | 141 mm (5.5 inches) | 88% | moderate |
| December Weather | 1°C (35°F) | 139 mm (5.5 inches) | 87% | low |