Boston Harbor sailing conditions today
GO — Yes — go sailing. Sailing score 79/100 · United States. Heavy rain windows. Better window tomorrow around 10:00 AM.
About sailing in Boston Harbor
Boston Harbor blends urban skyline views with the Boston Harbor Islands — a compact but busy Northeast sailing ground.
Best time to sail
May through October; July and August offer the warmest water and most consistent afternoon breezes.
Sailing notes
Heavy ferry and commercial traffic near downtown; stay alert for lobster pot buoys in outer harbor channels.
Boston Harbor wind and sailing weather
Southwest sea breezes dominate fair-weather summer days; strong northerlies and northeasters follow cold fronts.
Boston Harbor sailing FAQ
What are sailing conditions like in Boston Harbor today?
SailCall publishes a live go, caution, or no-go sailing conditions verdict for Boston Harbor based on wind, seas, visibility, and timing. Check the live score on this page before you leave the dock.
When is the best time to sail in Boston Harbor?
May through October; July and August offer the warmest water and most consistent afternoon breezes.
What wind patterns should I expect in Boston Harbor?
Southwest sea breezes dominate fair-weather summer days; strong northerlies and northeasters follow cold fronts.
Is Boston Harbor in United States suitable for day sailing?
Boston Harbor is a popular day-sail venue in United States. Check the live SailCall verdict for today's wind, seas, sailing score, and go/no-go recommendation before you leave the dock.
Is it good for sailing in Boston Harbor?
Yes — Sailing Score 79/100. Heavy rain windows
Nearby sailing harbors
← All harborsWhat SailCall covers
Wind, seas, rain, visibility, and pressure for today's coastal day sail, using WeatherAPI.com forecast and marine data. Wave outlook is included; tide times are not yet — check a local tide table before harbor entry. Not a chart plotter or passage planner.
Should I go sailing today?
Boston Harbor
GO
Yes — go sailing
79
Sailing score
Next 24 hours
Hourly sailing comfort at the harbor — today and tomorrow are local to the marina.
Best intervals: Tomorrow 10:00 AM – 1:00 PM
Boat type
Showing Keelboat wind thresholds
Hover or tap an hour for details · Next 24 hours
At harbor: Mon, Aug 17, 10:00 AM (Eastern Daylight Time)
The call
Conditions near Boston Harbor look favorable — the best window in the next 24 hours is tomorrow late morning.
Location
Boston Harbor, United States
Today's seas
Daily wave outlook from WeatherAPI.com. Waves and swell, not tides.
- Significant waves
- 0.0 m
- Relatively calm on the surface. Still check wind against tide at the harbor mouth.
- Swell
- 0.0 m
- Swell period and direction affect how the boat rolls and whether wind waves stack on top.
Conditions at a glance
What stood out in the forecast
Wind
Good11 kt · BF 4
Sustained to 11 kt · gusts to 16 kt · BF 4
Beaufort 4 — a workable breeze for most day sails. Watch for funneling between headlands and tall buildings near harbors; local gusts can exceed the open-water forecast.
Seas
Good0.0 m
Significant wave height 0.0 m
Relatively modest seas today (swell ~0.0 m). Still evaluate harbor entrance and wind against any tidal stream using local pilot notes.
Rain
Fair57%
1.5 mm total · 57% peak chance · 18 wet hour(s)
Showers possible across 18 hour(s). Light rain is manageable with good gear; heavy bursts can obscure marks and other traffic — keep a hand on the plotter or chart.
Air temperature
Good25°C
Air 17–25°C · feels like 17–25°C
Comfortable air temperatures for deck work, but water temperature may still be much colder — a dip without proper gear can shock even on a warm day.
Visibility
Fair1.1 nm
Lowest 1.1 nm · best 5.4 nm today
Visibility may dip to 1.1 nm even if the best part of the day reaches 5.4 nm. Haze, rain, or low cloud can hide buoys until you are close — brief the crew on what to watch for.
Barometric pressure
Fair1012 hPa
1012 hPa ↓ falling (5 hPa change)
Pressure has dropped about 5 hPa — a common sign of an approaching front or low. Wind often strengthens and seas build over the next hours, sometimes before the sky looks dramatic. SailCall does not measure tidal or ocean currents; check tide tables for harbor streams. Wind against the tide can sharpen chop in narrow channels.
UV / sun
GoodUV 1.7
Low index — still use basics on bright water. · peak near 15:00
Lower UV today, but reflection off water still adds exposure. Sunglasses and SPF remain cheap insurance on the water.
Why we said GO
What pushed the score — how we score
Heavy rain windows
High1 hour(s) with high rain risk in the next 24 hours — poor visibility and comfort.
How we decided
We score sailing conditions with fixed thresholds, so you can see why we picked go, caution, or no-go. Official charts, tide books, and your own judgment still run the show.
- GO — sailing score ≥70 with no critical blockers
- CAUTION — score 45–69, or manageable risks
- NO-GO — score <45 or dangerous wind/seas/storms
Engine v1.2.0 · WeatherAPI.com marine + forecast · Evaluated Sun, Aug 16, 6:46 PM (Eastern Daylight Time)
What should I do?
What to do next
Pack full wet-weather gear
Rain in the forecast — stow charts and radios in dry bags; visibility drops quickly in squalls.
Check local tide tables
SailCall does not include tide data yet — verify harbor depth before you go.
At harbor: Mon, Aug 17, 10:00 AM (Eastern Daylight Time)
Day outlook
2-day · °C, kt, m, nm, mm
Today
Fair
28°C / 15°C
1.5 mm · 57% · 11 kt · BF 4
Sail with preparation: rain in forecast (remaining hours).
Tomorrow
Fair
21°C / 17°C
6.5 mm · 88%
Sail with preparation: heavy rain likely.
Forecast data from third-party providers.