United States Boston Weather in October — Climate Guide
October in Boston is very-high
October is very-high for Boston.
October is Boston's canonical fall foliage month — New England fall foliage peaks mid-October in Boston (slightly earlier in Vermont/New Hampshire mountains, slightly later in southern Massachusetts/Cape Cod). Boston Common + Public Garden + Charles River Esplanade + Harvard Yard + Mount Auburn Cemetery Cambridge are the canonical city-foliage spots.
Head of the Charles Regatta (3rd weekend October) — the world's largest 2-day regatta (since 1965), 11,000+ rowers + 400,000+ spectators on the Charles River. Free spectator viewing from Cambridge + Boston bridges. Anderson Bridge + Eliot Bridge + Cambridge Boat Club lawn are the canonical viewing spots. Hotels surge 30-50% for Regatta weekend.
Travel score
Boston October Weather Stats
Avg High
17°C
Avg Low
8°C
Rainy Days
9
95mm total
Sunshine
7h
Daily avg
Humidity
65%
moderate
UV Index
5
Moderate
Wind
13 km/h
Gusts 32
Sea Temp
15°C
swimming chilly
Crowds
Very busy
At attractions
October Sunrise & Sunset
Air Quality
PM2.5
7 μg/m³
PM10
17 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
17°C
Nighttime
7°C
Humidity and wind affect how the actual temperature feels.
Wind
13 km/h
Max gust 32 km/h
Activities Recommended for October
October Travel Pros & Cons
Pros
- Fall foliage peaks mid-October (canonical New England photo)
- Head of the Charles Regatta (world's largest)
- Salem Halloween month
- Ideal walking weather 17°C / 63°F days
- Columbus/Indigenous Peoples' Day weekend
Cons
- Head of Charles Regatta weekend hotel surge
- Salem Halloween peak crowds
- Foliage-peak demand
- Cape Cod day-trip last weeks
October Events & Festivals
- Head of the Charles Regatta (3rd weekend Oct, world's largest 2-day regatta)
- Fall foliage peak mid-October
- Halloween (Oct 31)
- Salem Halloween month (peak in Salem)
- Columbus/Indigenous Peoples' Day (2nd Mon Oct)
Boston in October — Full Picture
October is Boston's canonical fall foliage month — New England fall foliage peaks mid-October in Boston (slightly earlier in Vermont/New Hampshire mountains, slightly later in southern Massachusetts/Cape Cod). Boston Common + Public Garden + Charles River Esplanade + Harvard Yard + Mount Auburn Cemetery Cambridge are the canonical city-foliage spots.
Head of the Charles Regatta (3rd weekend October) — the world's largest 2-day regatta (since 1965), 11,000+ rowers + 400,000+ spectators on the Charles River. Free spectator viewing from Cambridge + Boston bridges. Anderson Bridge + Eliot Bridge + Cambridge Boat Club lawn are the canonical viewing spots. Hotels surge 30-50% for Regatta weekend.
Salem (25 min north by Commuter Rail) becomes the world's Halloween capital — 1M+ visitors during October, peak Halloween Saturday. Salem hotels book 6 months ahead. Day-trip Boston-to-Salem still works but expect crowds.
Weather sweet spot — 17°C / 63°F days, 8°C / 46°F nights, low humidity, light rain. The canonical Boston walking month.
The smart October move: target the first 2 weeks (pre-Head of the Charles, pre-Halloween peak) for shoulder pricing within fall foliage window. Book hotels 2-3 months ahead for foliage peak weeks.
What to Wear & What to Pack
Fall foliage canonical — light jacket + sweater + jeans + walking shoes. Mid-month foliage peak. Halloween-Salem-tourist month.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
14°C
4.3°C
11.7/mo
Summer (Jun·Jul·Aug)
26.7°C
17.3°C
9.7/mo
Autumn (Sep·Oct·Nov)
Current17°C
8.3°C
9.7/mo
Winter (Dec·Jan·Feb)
3.7°C
-4.7°C
11/mo
Boston Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 2° | -6° | 11d·90mm | 5h | 65% | 2 | Quiet | Low season | |
| 4° | -5° | 10d·80mm | 6h | 64% | 3 | Quiet | Low season | |
| 8° | -1° | 12d·95mm | 7h | 62% | 4 | Quiet | Low season | |
| 14° | 4° | 12d·95mm | 8h | 60% | 5 | Very busy | Peak | |
| May (Best) | 20° | 10° | 11d·90mm | 9h | 60% | 7 | Very busy | Peak |
| June (Best) | 25° | 15° | 11d·90mm | 10h | 64% | 9 | Busy | Peak |
| July (Best) | 28° | 19° | 9d·85mm | 11h | 67% | 10 | Very busy | Peak |
| August (Best) | 27° | 18° | 9d·90mm | 10h | 70% | 9 | Very busy | Peak |
| September (Best) | 23° | 14° | 9d·90mm | 9h | 65% | 7 | Very busy | Peak |
| October (Best) | 17° | 8° | 9d·95mm | 7h | 65% | 5 | Very busy | Peak |
| 11° | 3° | 11d·95mm | 5h | 65% | 3 | Busy | Peak | |
| 5° | -3° | 12d·100mm | 5h | 65% | 2 | Very busy | Peak |
View Other Months
Boston October Hotel Picks
Frequently Asked Questions
Is October a good time to visit Boston?
Boston in October is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Boston in October?
Boston October averages a high of 17°C and a low of 8°C.
Does it rain much in Boston in October?
Boston October averages 95mm of rainfall over about 9 rainy days.
What should I wear in Boston in October?
Fall foliage canonical — light jacket + sweater + jeans + walking shoes. Mid-month foliage peak. Halloween-Salem-tourist month.
What time are sunrise and sunset in Boston in October?
Boston October sunrise is 06:50 and sunset is 18:00, with 11h 10m of daylight.
What's the air quality like in Boston in October?
Boston October air quality (AQI) averages 28, rated Good. PM2.5 averages 7μg/m³.
What activities are recommended in Boston in October?
In October, Boston is great for Fall foliage at Boston Common + Public Garden + Charles River Esplanade, Head of the Charles Regatta, Salem Halloween day trip.
Is October peak season in Boston?
Boston October crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Boston
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.