Last updated: June 24, 2025
In December, the average temperature in Harpswell Center, United States hovers around 1°C (34°F). Expect chilly days with minimums plummeting to -17°C (1°F) and occasional highs reaching 13°C (56°F). This month also brings 149 mm (5.9 in) of rain over approximately 11 days, contributing to an average humidity of 81%. Be prepared for a brisk, damp climate!
In December in Harpswell Center, the average temperature is 1°C (34°F). Maximums can reach 13°C (56°F), and minimums can be as low as -17°C (1°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both chilly days and the possibility of milder weather.
In Harpswell Center in December, the total precipitation amount is 149 mm (5.9 in) spread over 11 days.
In Harpswell Center in December humidity is 81%. With an average temperature of 1°C (34°F), this humidity feels like a damp chill wrapping around you, making traveling uncomfortable as every breath feels heavy and the cold penetration intensifies with the moisture in the air.
In Harpswell Center 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 Harpswell Center, you can visit Hourly UV Index in Harpswell Center.
UV Risk Categories
Weather in Harpswell Center varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Harpswell Center, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (30°F) | 101 mm (4.0 inches) | 86% | low |
| February Weather | -1°C (31°F) | 104 mm (4.1 inches) | 84% | moderate |
| March Weather | 1°C (34°F) | 92 mm (3.6 inches) | 82% | moderate |
| April Weather | 6°C (43°F) | 154 mm (6.1 inches) | 80% | high |
| May Weather | 11°C (51°F) | 95 mm (3.8 inches) | 72% | very high |
| June Weather | 16°C (60°F) | 77 mm (3.0 inches) | 72% | very high |
| July Weather | 19°C (67°F) | 112 mm (4.4 inches) | 67% | very high |
| August Weather | 20°C (68°F) | 73 mm (2.9 inches) | 66% | very high |
| September Weather | 17°C (63°F) | 81 mm (3.2 inches) | 71% | high |
| October Weather | 12°C (55°F) | 170 mm (6.7 inches) | 78% | moderate |
| November Weather | 6°C (43°F) | 134 mm (5.3 inches) | 84% | moderate |
| December Weather | 1°C (34°F) | 149 mm (5.9 inches) | 81% | low |