April weather forecast and climate
Boston, MA

A beautiful natural park with the George Washington Monument in Boston, Massachusetts, with a sneak view of the city skyscrapers
A beautiful natural park with the George Washington Monument in Boston, Massachusetts, with a sneak view of the city skyscrapers
April is a transitional month into spring but experiences moderately wintery weather at first. The temperature is in the range of 40.6°F (4.8°C) and 55.6°F (13.1°C), with the nights' temperature occasionally dropping to 35.6°F (2°C) or lower.
There is minimal snowfall experienced for approximately half a day, collecting a low 1.9" (48.3mm) on the ground. The sunshine hours, though, rise to seven and a half per day, making most daytimes warm and lovely.
Rainfall in April decreases considerably to fall for eleven days fetching 3.7" (94mm) of precipitation.
The warm dressing is still advised as there are occasional cold days and evenings. Joining the local festivities like the Boston Marathon will make the visit more fun.

What is the temperature in April in Boston?

The average high-temperature, in April, is 55.6°F (13.1°C), while the average low-temperature is 40.6°F (4.8°C).

How much does it rain in Boston in April?

In Boston, Massachusetts, during April, the rain falls for 11.2 days and regularly aggregates up to 3.7" (95mm) of precipitation.

What is the last month it snows in Boston?

April is the last month it regularly snows in Boston, Massachusetts. During 0.7 snowfall days, in April, Boston aggregates 1.9" (48.3mm) of snow.

How cold is the water in April in Boston?

In April, in Boston, the average sea temperature is 43.2°F (6.2°C). Swimming in 43.2°F (6.2°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.
Average temperature in April - Boston, MA
  • Average high temperature in April: 55.6°F

The warmest month (with the highest average high temperature) is July (81.4°F).
The month with the lowest average high temperature is January (35.8°F).

  • Average low temperature in April: 40.6°F

The month with the highest average low temperature is July (65.4°F).
The coldest month (with the lowest average low temperature) is January (22.2°F).

Average humidity in April - Boston, MA
  • Average humidity in April: 63%

The month with the highest relative humidity is September (71.8%).
The month with the lowest relative humidity is February (62%).

Average rainfall in April - Boston, MA
  • Average rainfall in April: 3.7"

The wettest month (with the highest rainfall) is March (4.3").
The driest month (with the lowest rainfall) is February (3.3").

Average rainfall days in April - Boston, MA
  • Average rainfall days in April: 11.2 days

The month with the highest number of rainy days is May (12 days).
The month with the lowest number of rainy days is September (8.6 days).

Average snowfall in April - Boston, MA
  • Average snowfall in April: 1.9"

The month with the highest snowfall is January (12.9").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average snowfall days in April - Boston, MA
  • Average snowfall days in April: 0.7 days

The month with the highest number of snowfall days is January (6.7 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average sea temperature in April - Boston, MA
  • Average sea temperature in April: 43.1°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (38.1°F).

Average daylight in April / Average sunshine in April - Boston, MA
  • Average daylight in April: 13.4h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in April: 7.6h

The month with most sunshine is July (Average sunshine: 9.7h).
The month with least sunshine is December (Average sunshine: 4.6h).

Average UV index in April - Boston, MA
  • Average UV index in April: 5

Months with the highest UV index are June, July and August (UV index 8).
Months with the lowest UV index are January and December (UV index 1).

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