Last updated: June 24, 2025
In April, the average temperature in New Haven, United States hovers around 13°C (55°F), creating a mild atmosphere. However, temperatures can fluctuate significantly, dropping to a brisk -5°C (24°F) at their lowest and peaking at a warm 31°C (88°F). Expect about 128 mm (5.0 in) of precipitation spread over 12 days, contributing to an average humidity level of 80%, adding to the region's character.
In April in New Haven, the average temperature is 13°C (55°F). Maximum temperatures can reach 31°C (88°F), while the minimum can drop to as low as -5°C (24°F). Be prepared for a wide range of weather conditions while traveling in New Haven during this month.
In New Haven in April, the precipitation amount is 128 mm (5.0 in) over the course of 12 days.
In New Haven in April humidity is 80%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making any outdoor activity feel stifling and heavy, which can lead to fatigue for travelers unaccustomed to such moist conditions.
In New Haven in April, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in New Haven.
UV Risk Categories
Weather in New Haven varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in New Haven, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 0°C (33°F) | 74 mm (2.9 inches) | 82% | moderate |
| February Weather | 2°C (36°F) | 79 mm (3.1 inches) | 80% | moderate |
| March Weather | 8°C (47°F) | 128 mm (5.1 inches) | 80% | high |
| April Weather | 13°C (55°F) | 128 mm (5.0 inches) | 80% | very high |
| May Weather | 19°C (66°F) | 161 mm (6.3 inches) | 82% | very high |
| June Weather | 24°C (76°F) | 87 mm (3.4 inches) | 83% | extreme |
| July Weather | 26°C (79°F) | 102 mm (4.0 inches) | 81% | extreme |
| August Weather | 24°C (76°F) | 141 mm (5.5 inches) | 80% | very high |
| September Weather | 22°C (72°F) | 52 mm (2.0 inches) | 76% | very high |
| October Weather | 15°C (59°F) | 104 mm (4.1 inches) | 76% | high |
| November Weather | 7°C (45°F) | 67 mm (2.6 inches) | 85% | moderate |
| December Weather | 4°C (39°F) | 51 mm (2.0 inches) | 86% | moderate |