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Best time to visit Boston, MA, USA

Our verdict

The best time to visit Boston is April

Are you looking for top-secret information about when to visit Boston? Look no further! April is the best time to go to Boston due to the excellent all-round climate conditions, and it’s not likely to be at its busiest as it’s not during the height of the peak travel season.

The very hottest temperatures in Boston get to around 30℃ (86℉) in the height of summer. In the winter, temperatures can get down to -9℃ (16℉) around January.

If you’re keen to work on your tan in Boston, you’re most likely get the longest days between sun-up and sun-down around August. On average it rains the most days in December, making it the wettest month of the year. Although it’s the wet season, it can often rain a little bit during the day or evening but have fine weather for a majority of the day too, so don’t let this put you off.

Keep reading to find all the info you need (and none of the stuff you don’t) about the best times to go to Boston. By the time you get to the bottom, you’ll be ready to start booking your trip.

Warmest month

July

Least rainfall

September

Most daylight

August

Boston seasons

Before you continue, it’s important to know when the seasons are in Boston as they might be different to yours depending on where in the world you’re travelling from. Boston is in the Northern Hemisphere, so the seasons fall during these months:

SeasonMonths
Summer June to August
Autumn/fall September to November
Winter December to February
Spring March to May

Average temperatures in Boston

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Boston for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Boston climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Boston for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Boston in January

  • Average temperature: -2℃ (29℉)
  • Average high temperature: 1℃ (34℉)
  • Average low temperature: -5℃ (23℉)
  • Average humidity: 76%
  • Average sunny days: 18 days
  • Average rainfall: 58mm (2") over 8 days
  • Average snow days: 8 days
18 days
of pure sunshine
8 days
of showers or rain

What to pack: If you’re heading to Boston in January, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Boston in February

  • Average temperature: -1℃ (31℉)
  • Average high temperature: 3℃ (37℉)
  • Average low temperature: -5℃ (24℉)
  • Average humidity: 77%
  • Average sunny days: 14 days
  • Average rainfall: 57mm (2") over 8 days
  • Average snow days: 8 days
14 days
of pure sunshine
8 days
of showers or rain

What to pack: If you’re heading to Boston in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Boston in March

  • Average temperature: 3℃ (37℉)
  • Average high temperature: 6℃ (43℉)
  • Average low temperature: -1℃ (31℉)
  • Average humidity: 73%
  • Average sunny days: 15 days
  • Average rainfall: 74mm (3") over 12 days
  • Average snow days: 7 days
15 days
of pure sunshine
12 days
of showers or rain

What to pack: If you’re heading to Boston in March, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Boston in April

  • Average temperature: 9℃ (48℉)
  • Average high temperature: 13℃ (55℉)
  • Average low temperature: 5℃ (40℉)
  • Average humidity: 69%
  • Average sunny days: 13 days
  • Average rainfall: 74mm (3") over 15 days
  • Average snow days: 1 days
13 days
of pure sunshine
15 days
of showers or rain

What to pack: If you’re heading to Boston in April, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Boston in May

  • Average temperature: 15℃ (58℉)
  • Average high temperature: 19℃ (66℉)
  • Average low temperature: 10℃ (50℉)
  • Average humidity: 72%
  • Average sunny days: 14 days
  • Average rainfall: 46mm (2") over 15 days
14 days
of pure sunshine
15 days
of showers or rain

What to pack: If you’re heading to Boston in May, make sure you pack a warm jacket or coat.


Boston in June

  • Average temperature: 19℃ (66℉)
  • Average high temperature: 23℃ (74℉)
  • Average low temperature: 14℃ (57℉)
  • Average humidity: 75%
  • Average sunny days: 15 days
  • Average rainfall: 54mm (2") over 13 days
15 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Boston in June, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


Boston in July

  • Average temperature: 23℃ (73℉)
  • Average high temperature: 27℃ (81℉)
  • Average low temperature: 18℃ (64℉)
  • Average humidity: 74%
  • Average sunny days: 16 days
  • Average rainfall: 47mm (2") over 14 days
16 days
of pure sunshine
14 days
of showers or rain

What to pack: If you’re heading to Boston in July, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


Boston in August

  • Average temperature: 22℃ (72℉)
  • Average high temperature: 27℃ (80℉)
  • Average low temperature: 18℃ (64℉)
  • Average humidity: 73%
  • Average sunny days: 17 days
  • Average rainfall: 36mm (1") over 11 days
17 days
of pure sunshine
11 days
of showers or rain

What to pack: If you’re heading to Boston in August, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


Boston in September

  • Average temperature: 18℃ (65℉)
  • Average high temperature: 23℃ (73℉)
  • Average low temperature: 14℃ (57℉)
  • Average humidity: 75%
  • Average sunny days: 18 days
  • Average rainfall: 32mm (1") over 10 days
18 days
of pure sunshine
10 days
of showers or rain

What to pack: If you’re heading to Boston in September, make sure you pack a light jumper or hoodie for the evenings and some light clothes for the daytime.

Boston in October

  • Average temperature: 13℃ (55℉)
  • Average high temperature: 16℃ (61℉)
  • Average low temperature: 9℃ (48℉)
  • Average humidity: 75%
  • Average sunny days: 16 days
  • Average rainfall: 65mm (3") over 13 days
16 days
of pure sunshine
13 days
of showers or rain

What to pack: If you’re heading to Boston in October, make sure you pack a warm jacket or coat.


Boston in November

  • Average temperature: 6℃ (44℉)
  • Average high temperature: 10℃ (50℉)
  • Average low temperature: 3℃ (38℉)
  • Average humidity: 72%
  • Average sunny days: 17 days
  • Average rainfall: 68mm (3") over 10 days
  • Average snow days: 1 days
17 days
of pure sunshine
10 days
of showers or rain

What to pack: If you’re heading to Boston in November, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Boston in December

  • Average temperature: 2℃ (35℉)
  • Average high temperature: 4℃ (40℉)
  • Average low temperature: -1℃ (30℉)
  • Average humidity: 76%
  • Average sunny days: 16 days
  • Average rainfall: 74mm (3") over 10 days
  • Average snow days: 5 days
16 days
of pure sunshine
10 days
of showers or rain

What to pack: If you’re heading to Boston in December, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.


Top FAQs

The hottest month of the year in Boston is usually July, where temperatures tend to rise to around 27℃ (81℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Boston is generally around September. The dry season often coincides with cooler weather, so you should check the temperatures in September first to make sure it’s still a good time to go.
The rainiest time of year in Boston is generally around December, although the wetter season can sometimes extend a few months either side of December too.
If you want to get the most out of your time visiting Boston, or if you're just afraid of the dark, the days in August are usually the longest between sunrise and sunset.

Boston map