Last updated: August 23, 2025
In December, the average temperature in Watergrasshill, Ireland hovers around 7°C (45°F), with lows dipping to a chilly -2°C (29°F) and highs reaching a comfortable 14°C (57°F). Expect 103 mm (4.1 in) of precipitation spread over 15 days, accompanied by an average humidity of 83%. This blend of cool temperatures and moisture creates a uniquely refreshing atmosphere in the heart of the season.
In December in Watergrasshill, the average temperature is 7°C (45°F). The maximum can reach 14°C (57°F) and the minimum can be as low as -2°C (29°F). Travelers should prepare for a mix of cool and mild weather, making it a great time for outdoor activities with suitable layering.
In Watergrasshill in December, the precipitation amount is 103 mm (4.1 in) during a span of 15 days.
In Watergrasshill in December, humidity is 83%. With an average temperature of 7°C (45°F), this humidity feels like a chilly blanket wrapping around you, making travel somewhat uncomfortable as you navigate the dampness that settles in your clothes, leading to a heavy and muggy experience outdoors.
In Watergrasshill 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 Watergrasshill.
UV Risk Categories
Weather in Watergrasshill varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Watergrasshill, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 6°C (44°F) | 54 mm (2.1 inches) | 83% | low |
| February Weather | 7°C (44°F) | 103 mm (4.1 inches) | 85% | low |
| March Weather | 7°C (45°F) | 83 mm (3.3 inches) | 84% | moderate |
| April Weather | 9°C (48°F) | 73 mm (2.9 inches) | 84% | moderate |
| May Weather | 11°C (53°F) | 71 mm (2.8 inches) | 84% | high |
| June Weather | 14°C (57°F) | 59 mm (2.3 inches) | 85% | very high |
| July Weather | 16°C (61°F) | 63 mm (2.5 inches) | 85% | very high |
| August Weather | 15°C (60°F) | 90 mm (3.5 inches) | 84% | high |
| September Weather | 14°C (57°F) | 66 mm (2.6 inches) | 85% | moderate |
| October Weather | 11°C (52°F) | 95 mm (3.8 inches) | 86% | moderate |
| November Weather | 8°C (47°F) | 84 mm (3.3 inches) | 84% | low |
| December Weather | 7°C (45°F) | 103 mm (4.1 inches) | 83% | low |