Last updated: June 24, 2025
In December, the average temperature in West Falmouth, United States hovers around 4°C (40°F), with extremes ranging from a chilly -12°C (10°F) to a mild 16°C (61°F). During this month, you can expect precipitation totaling 131 mm (5.2 in) over approximately 10 days, contributing to an average humidity of 80%. Prepare accordingly for a brisk but refreshing climate!
In December in West Falmouth, the average temperature is 4°C (40°F). Maximums can reach 16°C (61°F), while minimums can drop as low as -12°C (10°F). Be prepared for a wide range of temperatures if you plan to travel during this time.
In West Falmouth in December, the precipitation amount is 131 mm (5.2 in) over a duration of 10 days.
In West Falmouth in December, humidity is 80%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and requiring careful planning for warmth and moisture management.
In West Falmouth 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 West Falmouth, you can visit Hourly UV Index in West Falmouth.
UV Risk Categories
Weather in West Falmouth varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in West Falmouth, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (35°F) | 95 mm (3.7 inches) | 84% | moderate |
| February Weather | 2°C (36°F) | 116 mm (4.6 inches) | 84% | moderate |
| March Weather | 3°C (38°F) | 117 mm (4.6 inches) | 82% | high |
| April Weather | 8°C (46°F) | 136 mm (5.3 inches) | 79% | very high |
| May Weather | 12°C (54°F) | 121 mm (4.8 inches) | 75% | very high |
| June Weather | 17°C (63°F) | 94 mm (3.7 inches) | 78% | very high |
| July Weather | 22°C (71°F) | 88 mm (3.5 inches) | 76% | very high |
| August Weather | 22°C (72°F) | 83 mm (3.3 inches) | 76% | very high |
| September Weather | 20°C (67°F) | 112 mm (4.4 inches) | 75% | very high |
| October Weather | 15°C (60°F) | 164 mm (6.5 inches) | 75% | high |
| November Weather | 9°C (49°F) | 103 mm (4.1 inches) | 80% | moderate |
| December Weather | 4°C (40°F) | 131 mm (5.2 inches) | 80% | low |