Boston climate
United States
First-time visitors often notice “tiring weather” before they label it as hot or cold in Boston.
Boston climate can look simple on averages, but travel comfort is often driven by humidity, wind, and rain.
Climate facts
Dec · Jan · Feb
Avg low -6 to -1°C / high 1 to 5°C · Snow/rain days: 8–13 / ~70–110 mm (incl. snow)
Mar · Apr · May
Avg low -1 to 10°C / high 6 to 20°C · Rainy days: 8–12 / ~75–110 mm
Jun · Jul · Aug
Avg low 16–20°C / high 24–29°C (higher on hot spells) · Rainy days: 7–11 / ~80–115 mm (thunderstorms possible)
Sep · Oct · Nov
Avg low 1–14°C / high 8–25°C · Rainy days: 7–10 / ~70–105 mm
How it tends to feel for travel
Rainier seasons can feel heavier even at similar temperatures, simply because you spend more time damp or under clouds.
Rainier seasons can feel heavier even at similar temperatures, simply because you spend more time damp or under clouds.
When it tends to fit
- • Once you see the year-round pattern, it’s easier to judge whether a month fits your style.
- • If you revisit the city, separating “seasonal itineraries” can save a lot of planning time.
- • In humidity- or rain-driven cities, adjusting the indoor/outdoor ratio can change comfort a lot.
When it may not fit
- • If you rely only on averages, you may be surprised by variability (squalls, wind, indoor AC).
- • In monsoon-like periods, the more your itinerary depends on outdoor walking, the higher the risk.
- • If you’re fine with cold but hate damp chill, it can feel colder than you expect.
Outfit notes
This connects climate patterns to packing—without over-interpreting.
- • 🧭 Key idea: Boston comfort is shaped by **coastal wind + moisture**. Wind chill is a winter problem; humidity can make summer feel heavier.
- • ❄️ Winter (Dec–Feb): heavy coat/parka + warm mid-layers + gloves/hat/scarf is a solid default. Snow/slush makes footwear a high-impact choice.
- • 🌱 Spring (Mar–May): big swings can happen—layers are the safest approach, and a light shell helps on wet days.
The same numbers can still feel different depending on how you travel.
Explore Boston
These pages are connected so you can compare conditions and decide for yourself.