Last updated: August 27, 2025
In December, the average temperature in Penrhyndeudraeth, United Kingdom hovers around 6°C (43°F). Expect a minimum chill of -6°C (21°F) and a maximum warmth reaching 12°C (54°F). Prepare for a decent amount of rainfall, with 165 mm (6.5 in) expected over 20 days, and don't forget your umbrella—average humidity is a high 89%!
In December in Penrhyndeudraeth, the average temperature is 6°C (43°F). Maximums can reach 12°C (54°F), while minimums can drop to as low as -6°C (21°F). Be prepared for chilly conditions and pack accordingly if you plan to travel during this time.
In Penrhyndeudraeth in December, the precipitation amount is 165 mm (6.5 in) over the course of 20 days.
In Penrhyndeudraeth in December, humidity is 89%. With an average temperature of 6°C (43°F), this humidity feels like a chilly, damp embrace that can make outdoor activities uncomfortable and energy-draining, often leading travelers to seek shelter indoors or dress in layers to cope with the cold and moist air.
In Penrhyndeudraeth 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 Penrhyndeudraeth.
UV Risk Categories
Weather in Penrhyndeudraeth varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Penrhyndeudraeth, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (41°F) | 103 mm (4.0 inches) | 89% | low |
| February Weather | 5°C (41°F) | 147 mm (5.8 inches) | 88% | low |
| March Weather | 6°C (43°F) | 141 mm (5.6 inches) | 86% | moderate |
| April Weather | 8°C (47°F) | 65 mm (2.5 inches) | 84% | moderate |
| May Weather | 11°C (51°F) | 88 mm (3.5 inches) | 79% | high |
| June Weather | 14°C (57°F) | 102 mm (4.0 inches) | 81% | very high |
| July Weather | 15°C (60°F) | 98 mm (3.9 inches) | 78% | very high |
| August Weather | 15°C (59°F) | 153 mm (6.0 inches) | 79% | high |
| September Weather | 13°C (55°F) | 126 mm (5.0 inches) | 85% | moderate |
| October Weather | 10°C (50°F) | 163 mm (6.4 inches) | 90% | moderate |
| November Weather | 7°C (45°F) | 133 mm (5.2 inches) | 91% | low |
| December Weather | 6°C (43°F) | 165 mm (6.5 inches) | 89% | low |