Last updated: June 24, 2025
In December, the average temperature in New Britain, United States is a brisk 3°C (38°F). Expect fluctuations, with minimums dipping as low as -13°C (8°F) and maximums reaching 18°C (65°F). During this month, anticipate about 102 mm (4.0 in) of precipitation over 10 days, contributing to a notable average humidity of 85%. Stay warm and ready for the damp conditions!
In December in New Britain, the average temperature is 3°C (38°F), with maximums reaching up to 18°C (65°F) and minimums dropping as low as -13°C (8°F). Travelers should be prepared for a wide range of temperatures, making layering essential for comfort during their visit.
In New Britain in December, the total precipitation amount is 102 mm (4.0 in) falling over the course of 10 days.
In New Britain in December, humidity is 85%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable as you contend with the heavy, cold air surrounding you.
In New Britain in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in New Britain, you can visit Hourly UV Index in New Britain.
UV Risk Categories
Weather in New Britain varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in New Britain, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 67 mm (2.6 inches) | 87% | moderate |
| February Weather | 3°C (37°F) | 108 mm (4.3 inches) | 85% | moderate |
| March Weather | 6°C (43°F) | 108 mm (4.3 inches) | 85% | high |
| April Weather | 12°C (53°F) | 105 mm (4.1 inches) | 83% | very high |
| May Weather | 17°C (63°F) | 144 mm (5.7 inches) | 75% | very high |
| June Weather | 22°C (72°F) | 104 mm (4.1 inches) | 73% | very high |
| July Weather | 25°C (78°F) | 148 mm (5.8 inches) | 65% | very high |
| August Weather | 24°C (75°F) | 155 mm (6.1 inches) | 62% | very high |
| September Weather | 21°C (70°F) | 96 mm (3.8 inches) | 66% | very high |
| October Weather | 15°C (60°F) | 105 mm (4.2 inches) | 79% | high |
| November Weather | 7°C (45°F) | 84 mm (3.3 inches) | 87% | moderate |
| December Weather | 3°C (38°F) | 102 mm (4.0 inches) | 85% | low |