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April Weather in New Haven, United States

Last updated: June 24, 2025

In April, the average temperature in New Haven, United States hovers around 10°C (50°F). Expect a range of temperatures from a chilly -7°C (20°F) to a warm 29°C (84°F). Be prepared for some precipitation too, with an average of 92 mm (3.6 in) spread over 12 days. With an average humidity of 87%, the air may feel quite damp, adding to the overall climate experience.

April Temperature in New Haven

In April, in New Haven, the average temperature is 10°C (50°F). Maximums can reach 29°C (84°F), while minimums can drop as low as -7°C (20°F). Be prepared for a wide range of temperatures, making it essential to pack clothing for both warm days and chilly nights during your travels.

April Weather in New Haven: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in New Haven, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In New Haven, April typically has an average temperature of 10°C (50°F), with highs reaching up to 29°C (84°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec283140506272767368564135
Data source: Temperature data for New Haven generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in New Haven

In New Haven in April, the precipitation amount is 92 mm (3.6 in) over the course of 12 days.

April Precipitation Trends in New Haven

The chart displays monthly precipitation patterns in New Haven, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In New Haven, April typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec74801029212712110497651018261
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in New Haven

In New Haven in April humidity is 87%. With an average temperature of 10°C (50°F), this humidity feels like a heavy cloak wrapping around you, making every step feel laborious and the air thick with moisture, challenging your comfort while traveling.

April Average Humidity in New Haven

This chart illustrates the average monthly humidity levels in New Haven, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in New Haven is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%87%81%82%81%79%78%81%89%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in New Haven

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.

Maximum UV Index Levels in New Haven for April

The chart shows the monthly maximum UV Index (UVI) for New Haven in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in New Haven typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35699101098642
Data source: New Haven April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How April Weather in New Haven Compares to Other Months

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.

This table compares monthly weather conditions in New Haven, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)74 mm (2.9 inches)85%moderate
February Weather-1°C (31°F)80 mm (3.2 inches)85%moderate
March Weather5°C (41°F)102 mm (4.0 inches)86%high
April Weather10°C (50°F)92 mm (3.6 inches)87%very high
May Weather17°C (63°F)127 mm (5.0 inches)81%very high
June Weather22°C (72°F)121 mm (4.8 inches)82%very high
July Weather24°C (76°F)104 mm (4.1 inches)81%very high
August Weather23°C (74°F)96 mm (3.8 inches)79%very high
September Weather20°C (68°F)65 mm (2.5 inches)78%very high
October Weather14°C (57°F)101 mm (4.0 inches)81%high
November Weather5°C (41°F)82 mm (3.2 inches)89%moderate
December Weather1°C (35°F)61 mm (2.4 inches)86%low

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