Last updated: August 23, 2025
In December, the average temperature in Blackwood, Ireland hovers around 6°C (43°F). Expect chilly evenings, where temperatures can dip to a minimum of -5°C (24°F), while daytime highs reach a cozy 14°C (57°F). Be prepared for frequent showers, as precipitation averages 88 mm (3.5 in) over 15 days, and don’t forget the high humidity, which sits at an enveloping 84%.
In December in Blackwood, the average temperature is 6°C (43°F). Maximums can reach 14°C (57°F), and minimums can drop as low as -5°C (24°F). Travelers should prepare for a mix of chilly and mild weather during this time, making it essential to pack layers for varying conditions.
In Blackwood in December, the precipitation amount is 88 mm (3.5 in) over a span of 15 days.
In Blackwood in December, humidity is 84%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that penetrates your clothing, making outdoor excursions uncomfortable and prompting travelers to seek refuge indoors or find warm, sheltered spots to enjoy their surroundings.
In Blackwood in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Blackwood.
UV Risk Categories
Weather in Blackwood varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Blackwood, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (42°F) | 55 mm (2.2 inches) | 85% | low |
| February Weather | 6°C (43°F) | 80 mm (3.2 inches) | 86% | low |
| March Weather | 7°C (44°F) | 82 mm (3.2 inches) | 86% | moderate |
| April Weather | 9°C (48°F) | 49 mm (1.9 inches) | 85% | moderate |
| May Weather | 12°C (53°F) | 69 mm (2.7 inches) | 83% | high |
| June Weather | 14°C (58°F) | 69 mm (2.7 inches) | 85% | very high |
| July Weather | 16°C (61°F) | 73 mm (2.9 inches) | 86% | very high |
| August Weather | 15°C (60°F) | 92 mm (3.6 inches) | 85% | high |
| September Weather | 13°C (56°F) | 64 mm (2.5 inches) | 86% | moderate |
| October Weather | 10°C (51°F) | 80 mm (3.1 inches) | 87% | moderate |
| November Weather | 7°C (46°F) | 85 mm (3.3 inches) | 86% | low |
| December Weather | 6°C (43°F) | 88 mm (3.5 inches) | 84% | low |