Last updated: June 24, 2025
In April, the average temperature in New Haven, United States is a mild 14°C (57°F). However, be prepared for temperature fluctuations, as minimums can dip to -3°C (27°F) while maximums may soar to 30°C (86°F). During this month, expect approximately 144 mm (5.7 in) of precipitation over 11 days, with an average humidity level of 82%, creating a lush and vibrant atmosphere.
In April in New Haven, the average temperature is 14°C (57°F). Maximum temperatures can reach 30°C (86°F), while minimums can drop as low as -3°C (27°F). Be prepared for a wide range of temperatures when traveling to New Haven during this month.
In New Haven in April, the precipitation amount is 144 mm (5.7 in) during 11 days, indicating a relatively wet period for the region.
In New Haven in April, humidity is 82%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making outdoor activities uncomfortable and travel more challenging due to the heavy, damp air.
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 | 3°C (37°F) | 96 mm (3.8 inches) | 87% | moderate |
| February Weather | 5°C (41°F) | 150 mm (5.9 inches) | 86% | moderate |
| March Weather | 9°C (49°F) | 135 mm (5.3 inches) | 86% | high |
| April Weather | 14°C (57°F) | 144 mm (5.7 inches) | 82% | very high |
| May Weather | 20°C (68°F) | 119 mm (4.7 inches) | 82% | very high |
| June Weather | 24°C (75°F) | 157 mm (6.2 inches) | 83% | extreme |
| July Weather | 26°C (79°F) | 115 mm (4.5 inches) | 80% | extreme |
| August Weather | 25°C (77°F) | 104 mm (4.1 inches) | 74% | very high |
| September Weather | 22°C (72°F) | 125 mm (4.9 inches) | 71% | very high |
| October Weather | 16°C (61°F) | 108 mm (4.2 inches) | 78% | high |
| November Weather | 8°C (46°F) | 89 mm (3.5 inches) | 88% | moderate |
| December Weather | 6°C (42°F) | 121 mm (4.8 inches) | 88% | moderate |