30YearWeather
Boston in January
Boston weather in January - United States
❄️Cool & Crisp

Boston Weather in January

Plan your January trip to Boston, United States. Based on 30 years of NASA data, expect temperatures of 2°C (high) to -6°C (low), with 25% rain probability and 8 hours of daily sunshine. The Atlantic Ocean averages 4°C in January. Pack rain gear for around 11 rainy days.

Avg High
2°C

Hottest around day 11

Avg Low
-6°C

Coolest around day 22

Rainy Days
11days

25% avg rain chance

Sunshine
8hrs/day

Winter season

Sea Temperature in January

Atlantic Ocean

3.9°C

Monthly Average

Water Feel
🥶Polar Plunge

Consider a wetsuit for extended swimming

Swim Rating
❄️Cold water hazard

Based on average sea surface temperature

Body of Water
Atlantic Ocean

Boston coastline

Boston January Weather Calendar

Click any day to see detailed weather information

Currency

USD

$ United States dollar

Language

English

Driving

Right side

Connect

Greater Boston uses10-digit dialing. Th...

Safety

Moderate Safety

GPI: 2.44

Travel Intelligence

Exclusive flight analytics & health data for Boston

Smart Flight Estimator

Airport-to-Airport Logistics

unlock smart flight estimates

Add your home location in settings to see airport details.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Major Hub
84/ 100
Traffic Index

Extremely busy airport

Peak Daily Arrivals

0

slots per day

Peak

Aug

Low

Nov

Monthly Traffic Distribution

465
Jan
490
Feb
551
Mar
596
Apr
643
May
627
Jun
650
Jul
676
Aug
651
Sep
635
Oct
424
Nov
533
Dec
Traffic Level
Low Season

Key Connections

Washington Ronald Reagan National (DCA)
Chicago O'Hare (ORD)
New York John F Kennedy (JFK)
Philadelphia (PHL)
Atlanta Hartsfield Jackson (ATL)

Health & Safety Advisory

CDC travel health recommendations

No Requirements

No Special Vaccinations Required

Standard travel precautions apply

Source: CDC Travelers' Health

View Complete Health Guide

Is January a Good Time to Visit Boston?

👍Great time to visit - recommended
Short Answer

Boston's January averages 2°C - cold but manageable with proper attire. Lower tourism (69% of peak) means better prices and fewer queues.

Decision Factors

Cold weather expected

2.2°C average highs

Wind chill makes it feel colder

Feels like -3°C with 22.3km/h wind

Cold sea - swimming challenging

3.9°C sea temperature - Polar Plunge

Shoulder season - balanced conditions

69% of peak - good value with moderate crowds

Exceptional dining scene

26 Michelin-listed restaurants

Good For

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

  • 🌡️
    Heat-sensitive visitors

    Manageable 2.2°C without oppressive humidity

Who Should Avoid

  • 🏖️
    Beach lovers

    Sea temperature only 3.9°C - too cold for comfortable swimming

  • 👴
    Elderly travelers

    -3°C temperatures require extra precautions

  • 💑
    Honeymoon couples

    Wedding score only 19/100 - better months available

930 observations30-year historical data
Confidence: 99%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Boston in January averages 2°C with 25% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Boston in January

What are the temperatures in Boston in January?

Daytime highs average 2°C, nights drop to -6°C. Temperatures remain fairly consistent.

How many rainy days in Boston in January?

Expect around 11 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Boston in January?

Warm winter clothing: insulated jacket, boots, gloves.

Is January peak season in Boston?

This is shoulder season—moderate prices and manageable crowds.