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April Weather in Boston, United States

Last updated: June 24, 2025

In April, the average temperature in Boston, United States is a pleasant 20°C (69°F). However, prepare for some variation, as temperatures can dip to a minimum of 2°C (36°F) and soar to a maximum of 34°C (93°F). With an expected precipitation amount of 80 mm (3.1 in) over 8 days, and an average humidity level of 76%, it's wise to stay prepared for both sunny and rainy moments!

April Temperature in Boston

In April in Boston, the average temperature is 20°C (69°F), with a maximum that can reach 34°C (93°F) and a minimum as low as 2°C (36°F). This is an ideal time for travelers, offering pleasant days and cool nights, perfect for exploring and enjoying the local scenery.

April Weather in Boston: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Boston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Boston, April typically has an average temperature of 20°C (69°F), with highs reaching up to 34°C (93°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec535963687680818180736056
Data source: Temperature data for Boston 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 Boston

In Boston in April, the precipitation amount is 80 mm (3.1 in) over a period of 8 days.

April Precipitation Trends in Boston

The chart displays monthly precipitation patterns in Boston, 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 Boston, April typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec72965280741571481371107350118
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Boston

In Boston in April, humidity is 76%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace that can make outdoor activities sticky and uncomfortable, requiring frequent breaks and plenty of hydration for a pleasant travel experience.

April Average Humidity in Boston

This chart illustrates the average monthly humidity levels in Boston, 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 Boston is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%82%80%76%73%74%80%79%83%77%84%88%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Boston

In Boston in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Boston.

Maximum UV Index Levels in Boston for April

The chart shows the monthly maximum UV Index (UVI) for Boston 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 Boston typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589101111111110864
Data source: Boston 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 Boston Compares to Other Months

Weather in Boston varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Boston, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Boston, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)72 mm (2.8 inches)85%moderate
February Weather15°C (60°F)96 mm (3.8 inches)82%very high
March Weather17°C (64°F)52 mm (2.1 inches)80%very high
April Weather20°C (69°F)80 mm (3.1 inches)76%very high
May Weather25°C (76°F)74 mm (2.9 inches)73%extreme
June Weather27°C (80°F)157 mm (6.2 inches)74%extreme
July Weather27°C (81°F)148 mm (5.8 inches)80%extreme
August Weather27°C (82°F)137 mm (5.4 inches)79%extreme
September Weather26°C (80°F)110 mm (4.3 inches)83%very high
October Weather23°C (74°F)73 mm (2.9 inches)77%very high
November Weather16°C (61°F)50 mm (2.0 inches)84%high
December Weather13°C (56°F)117 mm (4.6 inches)88%moderate

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