Last updated: June 24, 2025
In East Haven, United States, the average temperature in December hovers around 4°C (39°F). Expect chilly nights with a minimum temperature dipping to -11°C (12°F), while daytime highs can reach up to 16°C (61°F). Over the course of the month, precipitation averages 151 mm (6.0 in) spread across 11 days, contributing to a notably high average humidity of 80%.
In December in East Haven, the average temperature is 4°C (39°F), with maximums reaching 16°C (61°F) and minimums dropping as low as -11°C (12°F). Travelers should be prepared for chilly conditions and pack warm clothing to fully enjoy their visit.
In East Haven in December, the precipitation amount reaches 151 mm (6.0 in) over a span of 11 days.
In East Haven in December, humidity is 80%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and requiring extra layers to stay warm while navigating through the misty streets.
In East Haven 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 East Haven, you can visit Hourly UV Index in East Haven.
UV Risk Categories
Weather in East Haven varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in East Haven, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 83 mm (3.3 inches) | 84% | moderate |
| February Weather | 2°C (35°F) | 115 mm (4.5 inches) | 82% | moderate |
| March Weather | 4°C (39°F) | 104 mm (4.1 inches) | 81% | high |
| April Weather | 8°C (47°F) | 141 mm (5.5 inches) | 78% | very high |
| May Weather | 13°C (57°F) | 121 mm (4.8 inches) | 69% | very high |
| June Weather | 19°C (66°F) | 84 mm (3.3 inches) | 69% | very high |
| July Weather | 23°C (74°F) | 129 mm (5.1 inches) | 62% | very high |
| August Weather | 23°C (74°F) | 92 mm (3.6 inches) | 65% | very high |
| September Weather | 20°C (69°F) | 99 mm (3.9 inches) | 68% | very high |
| October Weather | 16°C (60°F) | 152 mm (6.0 inches) | 74% | high |
| November Weather | 9°C (48°F) | 105 mm (4.1 inches) | 82% | moderate |
| December Weather | 4°C (39°F) | 151 mm (6.0 inches) | 80% | low |