When to go
The Best Time to Visit Boston
Month-by-month climate data for Boston, United States — daily highs and lows, rain days, and an honest verdict for every month of the year.
May–June, September–October. Crisp temperatures, fewer crowds, fall foliage in late October on the Common and along the Charles.
Warmest in Boston: Jul (29°C / 84°F) · Coolest: Jan (4°C / 39°F) · Wettest: Jul (~13 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
Boston climate, month by month
January
4° / -4°C
~11 rain days
Tough
February
5° / -5°C
~9 rain days
Tough
March
9° / -1°C
~12 rain days
Fair
April
13° / 4°C
~10 rain days
Good
May
20° / 10°C
~10 rain days
Excellent
June
26° / 15°C
~11 rain days
Excellent
July
29° / 19°C
~13 rain days
Good
August
28° / 18°C
~12 rain days
Excellent
September
23° / 14°C
~10 rain days
Excellent
October
18° / 9°C
~9 rain days
Excellent
November
12° / 3°C
~7 rain days
Good
December
6° / -2°C
~11 rain days
Tough
Plan around it
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