United States Boston Weather in April — Climate Guide
April in Boston is high
April is high for Boston.
April is Boston Marathon month — Boston Marathon (3rd Monday in April, the oldest annual marathon in the world since 1897). 30,000+ runners + 1,000,000+ spectators. Patriots' Day is the Massachusetts state holiday (commemorating the 1775 Lexington + Concord battle that started the American Revolution).
Hotels surge 50-100% for Marathon weekend (Friday-Tuesday). Four Seasons Public Garden $1,000+/night for the Saturday-Monday window. Reservations 6 months ahead are standard.
Travel score
Boston April Weather Stats
Avg High
14°C
Avg Low
4°C
Rainy Days
12
95mm total
Sunshine
8h
Daily avg
Humidity
60%
moderate
UV Index
5
Moderate
Wind
15 km/h
Gusts 38
Sea Temp
6°C
freezing
Crowds
Very busy
At attractions
April Sunrise & Sunset
Air Quality
PM2.5
7 μg/m³
PM10
18 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
14°C
Nighttime
4°C
Humidity and wind affect how the actual temperature feels.
Wind
15 km/h
Max gust 38 km/h
Activities Recommended for April
April Travel Pros & Cons
Pros
- Boston Marathon (oldest annual marathon in the world)
- Cherry blossom + magnolia bloom mid-late April
- Public Garden Swan Boats open April 1
- Patriots' Day Red Sox 11 AM game (Fenway opens)
Cons
- Marathon weekend hotels surge 50-100%
- Variable rain (12 rainy days)
- Cold mornings/evenings still
- Patriots' Day crowds peak
April Events & Festivals
- Boston Marathon (3rd Mon April — Patriots' Day, Massachusetts state holiday)
- Patriots' Day Red Sox 11 AM game (Fenway Park)
- Easter weekend (varies)
- April school vacation week (Mass schools)
Boston in April — Full Picture
April is Boston Marathon month — Boston Marathon (3rd Monday in April, the oldest annual marathon in the world since 1897). 30,000+ runners + 1,000,000+ spectators. Patriots' Day is the Massachusetts state holiday (commemorating the 1775 Lexington + Concord battle that started the American Revolution).
Hotels surge 50-100% for Marathon weekend (Friday-Tuesday). Four Seasons Public Garden $1,000+/night for the Saturday-Monday window. Reservations 6 months ahead are standard.
Marathon spectator strategy: Heartbreak Hill at mile 20.5 (Newton T Green Line, the canonical spectator spot for elite runners struggling at mile 20). Boylston Street finish line (the iconic finish photos) — 6 AM arrival for prime spots. Patriots' Day Red Sox 11 AM game at Fenway Park (the only 11 AM regular-season MLB game).
Spring weather variable — 14°C / 57°F days, 4°C / 39°F nights. Cherry blossoms + magnolias in Boston Public Garden mid-to-late April (the canonical Boston spring photo). Swan Boats open April 1. Charles River Esplanade ideal walking.
The smart April move: target the first 2 weeks (pre-Marathon, pre-Easter) for the value pocket. Avoid Marathon weekend if not specifically there for the event.
What to Wear & What to Pack
Spring layered — light jacket + sweater + waterproof shell for variable rain. Boston cherry blossoms peak mid-to-late April. Public Garden Swan Boats open. Marathon weekend visitors crash the city.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current14°C
4.3°C
11.7/mo
Summer (Jun·Jul·Aug)
26.7°C
17.3°C
9.7/mo
Autumn (Sep·Oct·Nov)
17°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 April Hotel Picks
Frequently Asked Questions
Is April a good time to visit Boston?
Boston in April is high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Boston in April?
Boston April averages a high of 14°C and a low of 4°C.
Does it rain much in Boston in April?
Boston April averages 95mm of rainfall over about 12 rainy days.
What should I wear in Boston in April?
Spring layered — light jacket + sweater + waterproof shell for variable rain. Boston cherry blossoms peak mid-to-late April. Public Garden Swan Boats open. Marathon weekend visitors crash the city.
What time are sunrise and sunset in Boston in April?
Boston April sunrise is 06:00 and sunset is 18:05, with 12h 5m of daylight.
What's the air quality like in Boston in April?
Boston April air quality (AQI) averages 30, rated Good. PM2.5 averages 7μg/m³.
What activities are recommended in Boston in April?
In April, Boston is great for Boston Marathon spectating Heartbreak Hill + Boylston finish, Patriots' Day Red Sox 11 AM Fenway game, Boston Public Garden Swan Boats + cherry blossoms.
Is April peak season in Boston?
Boston April 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.