Last updated: August 27, 2025
In December, the average temperature in Grou, Netherlands hovers around 5°C (42°F). Expect chilly days, with minimum temperatures dipping as low as -6°C (21°F) and daytime highs reaching up to 12°C (53°F). Prepare for some wet weather too, as 87 mm (3.4 in) of precipitation falls over approximately 16 days. With an average humidity of 86%, it’s a month where cozy moments indoors are sure to be welcome!
In December in Grou, the average temperature is 5°C (42°F). Maximum can reach 12°C (53°F) and minimum can be as low as -6°C (21°F). Be prepared for chilly weather and pack accordingly if you're planning to travel during this time.
In Grou in December, the precipitation amount is 87 mm (3.4 in) occurring over the course of 16 days.
In Grou in December, humidity is 86%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that penetrates your layers, making outdoor activities quite uncomfortable and prompting you to seek warmth indoors more often.
In Grou 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 Grou.
UV Risk Categories
Weather in Grou varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Grou, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 60 mm (2.4 inches) | 88% | low |
| February Weather | 4°C (40°F) | 68 mm (2.7 inches) | 88% | low |
| March Weather | 6°C (43°F) | 72 mm (2.8 inches) | 86% | moderate |
| April Weather | 9°C (48°F) | 41 mm (1.6 inches) | 84% | moderate |
| May Weather | 13°C (55°F) | 63 mm (2.5 inches) | 80% | high |
| June Weather | 17°C (63°F) | 79 mm (3.1 inches) | 75% | very high |
| July Weather | 18°C (64°F) | 98 mm (3.8 inches) | 75% | very high |
| August Weather | 18°C (65°F) | 108 mm (4.2 inches) | 75% | high |
| September Weather | 15°C (59°F) | 83 mm (3.3 inches) | 83% | moderate |
| October Weather | 12°C (54°F) | 97 mm (3.8 inches) | 86% | moderate |
| November Weather | 8°C (46°F) | 55 mm (2.2 inches) | 87% | low |
| December Weather | 5°C (42°F) | 87 mm (3.4 inches) | 86% | low |