Quick Answer
September–October and April–May are the best times to visit Boston. The city is one of America’s most walkable, and those shoulder seasons reward foot travel: the Freedom Trail through colonial history, the Esplanade along the Charles River, and the brownstones of Back Bay are all best experienced in mild weather. For what to prioritize in the city, see our Boston city guide. Boston Marathon weekend in April requires hotel booking months ahead - check availability now.
Season Overview
| Month | Avg Temp | Rainfall | Crowds | Cost |
|---|---|---|---|---|
| January | 0°C | Medium/Snow | Low | Low |
| February | 1°C | Medium/Snow | Low | Low |
| March | 6°C | Medium | Low-Medium | Low |
| April | 13°C | Medium | High | Very High |
| May | 19°C | Medium | High | High |
| June | 23°C | Medium | High | High |
| July | 27°C | Medium | Very High | Very High |
| August | 26°C | Medium | Very High | Very High |
| September | 22°C | Low | High | High |
| October | 16°C | Low | High | Medium-High |
| November | 10°C | Medium | Medium | Medium |
| December | 4°C | Medium/Snow | Low | Low-Medium |
Peak Season: July–August and Marathon Weekend
Summer is Boston’s most expensive season. Hotel rates in the city center average from approximately $250–$400 per night as of 2026, driven by leisure tourism, college family visits, and the city’s historic draw. The Esplanade concerts (Boston Pops Fourth of July concert is one of the country’s most attended public events), harbor cruises, and the Freedom Trail are all at capacity. Temperatures reach 25–28°C with moderate humidity.
Boston Marathon weekend (Patriots’ Day, the third Monday in April) is the single most expensive weekend in the Boston calendar. The race draws approximately 30,000 runners and 500,000 spectators. Hotels within walking distance of the finish line on Boylston Street can hit $800–$1,200 per night. Book six months in advance or accept staying in Cambridge or the suburbs.
Shoulder Season: May–June and September–October
May is a strong shoulder month once graduation weekends (mid-May, when Harvard, MIT, and Boston University all hold ceremonies simultaneously) pass. Temperatures reach 18–22°C, the Swan Boats return to the Public Garden, and the waterfront is pleasant for walking. The Boston Calling music festival (Memorial Day weekend) is a major event.
September and October are consistently the best months for most visitors. The Boston Symphony opens its season in September. Fall foliage peaks along the Esplanade and in Arnold Arboretum around mid-October. The Head of the Charles Regatta in late October is the world’s largest two-day rowing event, bringing 11,000 athletes and 400,000 spectators to the Charles River.
Off Season: December–March
Boston winters are real. January and February average 0–2°C, and snowstorms are a recurring feature - the city received 177cm of snow in the winter of 2014–15. That said, Boston is well-equipped to handle winter: the MBTA (subway) operates through storms, plowing is efficient, and the indoor attractions - the Museum of Fine Arts, Isabella Stewart Gardner Museum, and the city’s exceptional restaurant scene - are fully operational. February is the cheapest month for hotel rooms.
Month-by-Month Guide
| Month | Weather | Crowds | Cost | Notes |
|---|---|---|---|---|
| January | 0°C, possible snow | Low | Low | Boston Restaurant Week |
| February | 1°C, possible snow | Low | Low | Cheapest month, February school break |
| March | 6°C, variable | Low-Medium | Low | St. Patrick’s Day in South Boston |
| April | 13°C, pleasant | High | Very High | Boston Marathon (third Monday) |
| May | 19°C, mild | High | High | Graduation weekends, Boston Calling |
| June | 23°C, warm | High | High | Pride events, Harborfest prep |
| July | 27°C, hot | Very High | Very High | 4th of July Pops concert, peak crowds |
| August | 26°C, hot | Very High | Very High | Peak tourist season |
| September | 22°C, excellent | High | High | BSO season opens, fall begins |
| October | 16°C, fall foliage | High | Medium-High | Head of the Charles Regatta |
| November | 10°C, cooling | Medium | Medium | Celtics and Bruins season begins |
| December | 4°C, cold | Low | Low-Medium | Holiday events, First Night Boston |
Key Events and Festivals
- Boston Marathon - third Monday in April (Patriots’ Day), 30,000 runners, 500,000 spectators
- Boston Calling Music Festival - Memorial Day weekend, Harvard Athletic Complex
- Fourth of July Pops Concert - July 4, Esplanade, free outdoor concert with fireworks
- Head of the Charles Regatta - late October, Charles River, world’s largest two-day rowing event
- St. Patrick’s Day Parade - March 17 (or nearest Sunday), South Boston
- First Night Boston - December 31, citywide arts and fireworks celebration
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