Last updated: June 24, 2025
In December, the average temperature in Dublin, United States is a brisk 4°C (40°F). Expect chilly days with temperatures dipping as low as -14°C (7°F), while highs can reach a pleasant 20°C (69°F). With an average humidity of 86%, the air can feel quite damp. Be prepared for 87 mm (3.4 in) of precipitation over 8 days, making a waterproof jacket a wise choice for your adventures!
In December in Dublin, the average temperature is 4°C (40°F). Maximums can reach 20°C (69°F), while minimums can drop as low as -14°C (7°F). Be sure to pack layers to stay comfortable during your travels!
In Dublin in December, the precipitation amount is 87 mm (3.4 in), which occurs over a span of 8 days.
In Dublin in December humidity is 86%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel cumbersome as you navigate through a thick, heavy air that clings to your skin.
In Dublin in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Dublin, you can check the information here.
UV Risk Categories
Weather in Dublin varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Dublin, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 2°C (36°F) | 66 mm (2.6 inches) | 87% | moderate |
February Weather | 5°C (41°F) | 105 mm (4.1 inches) | 87% | high |
March Weather | 7°C (46°F) | 84 mm (3.3 inches) | 86% | very high |
April Weather | 12°C (54°F) | 105 mm (4.1 inches) | 84% | very high |
May Weather | 17°C (63°F) | 102 mm (4.0 inches) | 83% | extreme |
June Weather | 21°C (69°F) | 85 mm (3.3 inches) | 83% | extreme |
July Weather | 23°C (74°F) | 61 mm (2.4 inches) | 79% | extreme |
August Weather | 22°C (72°F) | 86 mm (3.4 inches) | 66% | very high |
September Weather | 20°C (67°F) | 95 mm (3.7 inches) | 68% | very high |
October Weather | 14°C (58°F) | 97 mm (3.8 inches) | 78% | high |
November Weather | 6°C (44°F) | 61 mm (2.4 inches) | 89% | moderate |
December Weather | 4°C (40°F) | 87 mm (3.4 inches) | 86% | moderate |