Best months
June, August, and September
Warmest month
July, 28°C
Wettest month
December, 111 mm
Boston weather by month
Average daily high and low, total rainfall and days with at least 2.5 mm of rain.
| Month | High / low | Rain | Verdict |
|---|---|---|---|
| January | 3°C / -4°C | 87 mm · 7 days | Cold |
| February | 4°C / -4°C | 85 mm · 6 days | Cold |
| March | 8°C / 0°C | 104 mm · 6 days | Cold |
| April | 14°C / 5°C | 91 mm · 7 days | Fair |
| May | 20°C / 11°C | 92 mm · 7 days | Fair |
| June | 25°C / 16°C | 102 mm · 7 days | Great |
| July | 28°C / 20°C | 106 mm · 7 days | Fair |
| August | 27°C / 19°C | 85 mm · 5 days | Good |
| September | 23°C / 15°C | 79 mm · 6 days | Great |
| October | 18°C / 10°C | 94 mm · 6 days | Fair |
| November | 11°C / 4°C | 85 mm · 6 days | Cold |
| December | 6°C / -1°C | 111 mm · 7 days | Cold |
Boston by season
Spring
Spring in Boston is a welcome relief, with blooming flowers in the Public Garden and temperatures becoming mild. The city shakes off winter, and outdoor cafes begin to open.
- + Comfortable temperatures for walking
- + Beautiful cherry blossoms and tulips
- + Fewer crowds than summer
- − Unpredictable rain showers (April)
- − Can still be chilly, especially early in the season
Summer
Summer is vibrant and busy, with festivals, outdoor concerts on the Esplanade, and perfect weather for harbor cruises. The city is full of energy and tourists.
- + Warm, sunny weather ideal for all activities
- + Full schedule of festivals and events
- + Long daylight hours for exploration
- − Peak tourist crowds and higher prices
- − Can be hot and humid
Autumn
Autumn is arguably Boston's most beautiful season. Crisp air, brilliant fall foliage, and the return of students create an energetic, picturesque atmosphere.
- + Stunning fall foliage, especially in the Public Garden
- + Pleasant, cool temperatures
- + Great for photography and outdoor sports
- − Weather can turn cold quickly in late October/November
- − A very popular time to visit, so still busy
Winter
Boston winters are cold and snowy, transforming the city into a quieter, festive scene. Holiday markets and cozy pubs take center stage.
- + Fewest tourists and lower hotel rates
- + Magical holiday decorations in Beacon Hill
- + Great for museum-hopping and indoor activities
- − Bitterly cold temperatures and nor'easter snowstorms
- − Some outdoor attractions close or have limited hours
Boston month by month
Boston in January
ColdIn January, Boston averages highs of 3°C and lows of -4°C, with about 7 rainy days and 87 mm of rain. It is cold, so pack warm layers.
Boston in February
ColdIn February, Boston averages highs of 4°C and lows of -4°C, with about 6 rainy days and 85 mm of rain. It is cold, so pack warm layers.
Boston in March
ColdIn March, Boston averages highs of 8°C and lows of 0°C, with about 6 rainy days and 104 mm of rain. It is cold, so pack warm layers.
Boston in April
FairIn April, Boston averages highs of 14°C and lows of 5°C, with about 7 rainy days and 91 mm of rain. Expect mixed weather, with comfortable spells.
Boston in May
FairIn May, Boston averages highs of 20°C and lows of 11°C, with about 7 rainy days and 92 mm of rain. Expect mixed weather, with comfortable spells.
Boston in June
GreatIn June, Boston averages highs of 25°C and lows of 16°C, with about 7 rainy days and 102 mm of rain. It is one of the most comfortable months for sightseeing.
Boston in July
FairIn July, Boston averages highs of 28°C and lows of 20°C, with about 7 rainy days and 106 mm of rain. Expect mixed weather, with comfortable spells.
Boston in August
GoodIn August, Boston averages highs of 27°C and lows of 19°C, with about 5 rainy days and 85 mm of rain. It is a good month to visit.
Boston in September
GreatIn September, Boston averages highs of 23°C and lows of 15°C, with about 6 rainy days and 79 mm of rain. It is one of the most comfortable months for sightseeing.
Boston in October
FairIn October, Boston averages highs of 18°C and lows of 10°C, with about 6 rainy days and 94 mm of rain. Expect mixed weather, with comfortable spells.
Boston in November
ColdIn November, Boston averages highs of 11°C and lows of 4°C, with about 6 rainy days and 85 mm of rain. It is cold, so pack warm layers.
Boston in December
ColdIn December, Boston averages highs of 6°C and lows of -1°C, with about 7 rainy days and 111 mm of rain. It is cold, so pack warm layers.
Top tours and experiences in Boston
The tours and tickets travellers book most, with ratings and reviews from Viator.
Boston: Freedom Trail History Small Group Walking Tour
4.98,325 reviews2h 30m
from €35
Check availability
All things to do in Boston →
Tours and prices from Viator, a Tripadvisor company. Prices change with your dates. We may earn a commission if you book, at no extra cost to you.
Plan your Boston trip
Best time to visit Boston: FAQ
What is the best month to visit Boston?+
June is the most comfortable month on average, with highs of 25°C. September and August are close behind.
What is the rainiest month in Boston?+
December is the wettest month, with about 111 mm of rain.
How hot does Boston get?+
July is the warmest month, with average highs of 28°C and lows of 20°C. The coldest nights come in January, averaging -4°C.
Averages for 2006–2025 from the BOSTON weather station (4 km from the centre), NOAA Global Historical Climatology Network. Verdicts rate sightseeing comfort from daytime highs and rainy days.