The best times to visit Boston for ideal weather are

August 13th to October 14th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

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Weather in Boston

Temperature

Average temperatures in Boston vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 28th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Boston, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 86.5°F (30.3°C) with temperatures rarely dropping below 66.9°F (19.4°C) at night.

Boston Temperatures (Fahrenheit)

Key
High
Average
Low

Boston Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Boston Perceived Temperature (F)

Key
High
Average
Low

Boston Perceived Temperature (C)

Key
High
Average
Low

 

Average Boston Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 39.2 29.9 21.6
Feb 40 30.3 21.7
Mar 48.7 38.3 29.5
Apr 60.6 49.2 40.2
May 71.3 59.5 50.2
Jun 78 67.1 58.7
Jul 85.1 74.3 65.8
Aug 82.7 72.4 64.3
Sep 76.8 66.1 57.7
Oct 65.4 55.5 47.3
Nov 54.9 45.1 36.9
Dec 46 36.6 28.9

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 4 -1.2 -5.8
Feb 4.4 -0.9 -5.7
Mar 9.3 3.5 -1.4
Apr 15.9 9.6 4.6
May 21.8 15.3 10.1
Jun 25.6 19.5 14.8
Jul 29.5 23.5 18.8
Aug 28.2 22.4 17.9
Sep 24.9 18.9 14.3
Oct 18.6 13.1 8.5
Nov 12.7 7.3 2.7
Dec 7.8 2.6 -1.7


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Boston are August, November, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid to late September. For example, on the week of September 17th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in late December with an average of 2 days of significant precipitation the week of December 24th.

When can you find snow in Boston? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chanceof Precipitation

The graph below shows the % chance of rainy and snowy days in Boston.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Boston (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 22% 0 2.7
Feb 22% 0 3.4
Mar 22% 0 4.4
Apr 22% 0 3.6
May 21% 0 2.9
Jun 26% 0 4.5
Jul 23% 0 4.3
Aug 17% 0 3.6
Sep 20% 0 3.2
Oct 23% 0 3.9
Nov 19% 0 3.2
Dec 31% 0 5.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 22 0 6.9
Feb 22 0 8.6
Mar 22 0 11.2
Apr 22 0 9.1
May 21 0 7.4
Jun 26 0 11.4
Jul 23 0 10.9
Aug 17 0 9.1
Sep 20 0 8.1
Oct 23 0 9.9
Nov 19 0 8.1
Dec 31 0 13

 

Humidity and Wind

Boston has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is February (46.7% relative humidity), and the most humid month is September (61%).

Wind in Boston is usually moderate. The windiest month is March, followed by February and April. March’s average wind speed of around 10.5 knots (12.1 MPH or 19.5 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid February where average top sustained speeds reach 18.6 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Boston.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 10.1 Gentle breeze 16.9 Significant breeze
Feb 10.4 Gentle breeze 17.7 Strong breeze
Mar 10.5 Gentle breeze 17.5 Significant breeze
Apr 10.2 Gentle breeze 17.6 Strong breeze
May 8.9 Gentle breeze 15.5 Significant breeze
Jun 8.4 Gentle breeze 14.9 Significant breeze
Jul 8.1 Gentle breeze 14.1 Significant breeze
Aug 7.8 Gentle breeze 13.9 Significant breeze
Sep 8.1 Gentle breeze 14.2 Significant breeze
Oct 9.1 Gentle breeze 15.5 Significant breeze
Nov 9.3 Gentle breeze 15.3 Significant breeze
Dec 9.9 Gentle breeze 16.5 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 48.8%
Feb 46.7%
Mar 47.7%
Apr 49.5%
May 55.9%
Jun 60.9%
Jul 59.9%
Aug 60%
Sep 61%
Oct 58.6%
Nov 53.4%
Dec 56.9%

 

Is it Safe to Travel to Boston?

Our best data indicates this area is generally safe. As of Jan 19, 2018 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories


 

The Busiest and Least Crowded Months

The busiest month for tourism in Boston, MA, US is July, followed by August and June. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Boston in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is very reliable. Displayed data is calculated relative to the peak, so a score of 51.6 in December means 51.6% of the tourists vs. July.


Overall Boston Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 77°F (25°C) and 41.1°F (5.1°C) with far warmer temperatures in the later months. Rain is somewhat common with 6 to 7 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see moderate precipitation with 5 to 8 days of precipitation per month. June – August is the busiest season for tourism in Boston, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 82.1°F (27.8°C) and 50.5°F (10.3°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 6 to 7 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Winter (December through February)

Weather is far too cold this time of year in Boston to be enjoyable for warm weather travelers. The average high during this season is between 48.2°F (9°C) and 35.2°F (1.8°C). On average, it rains or snows a fair amount: 6 to 10 times per month. These times of year are the slowest with tourists.

 

Best Times to Travelthe United States › Boston, MA, US

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