Tokyo Bay sailing weather today — go/no-go

CAUTION — Sail only if you are experienced and prepared. Sailing score 51/100 · Japan. Strong wind — experienced crew only. Heavy rain windows. Better window tomorrow around 8:00 AM.

About sailing in Tokyo Bay

Tokyo Bay is a vast enclosed waterway framed by Yokohama, Chiba, and the Miura Peninsula — busy but rewarding urban sailing.

Best time to sail

April through October; avoid typhoon season peak August–September without close weather monitoring.

Sailing notes

Heavy commercial shipping and restricted zones; typhoon tracks demand flexible plans in summer.

Tokyo Bay wind and sailing weather

Thermal sea breezes in summer afternoons; winter brings northerly winds and clearer visibility.

Tokyo Bay sailing FAQ

What are sailing conditions like in Tokyo Bay today?

SailCall publishes a live go, caution, or no-go sailing conditions verdict for Tokyo Bay 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 Tokyo Bay?

April through October; avoid typhoon season peak August–September without close weather monitoring.

What wind patterns should I expect in Tokyo Bay?

Thermal sea breezes in summer afternoons; winter brings northerly winds and clearer visibility.

Is it good for sailing in Tokyo Bay today?

Maybe, with preparation — Sailing Score 51/100. Strong wind — experienced crew only. Heavy rain windows. Poor visibility likely

Nearby sailing harbors

← All harbors

What 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?

Tokyo Bay

CAUTION

Sail only if you are experienced and prepared

Sailing score

Next 24 hours

Hourly sailing comfort at the harbor — today and tomorrow are local to the marina.

Best intervals: Tomorrow 8:00 AM – 11:00 AM

Boat type

Showing Keelboat wind thresholds

Tomorrow

Now5pm11pmTmr 5amTmr 11am

GoodFairPoor

Hover or tap an hour for details · Next 24 hours

At harbor: Sat, Oct 3, 8:00 AM (Japan Standard Time)

The call

Marginal conditions near Tokyo Bay today — strong wind — experienced crew only. A better window may be tomorrow morning.

Location

Tokyo Bay, Japan

35.4467°, 139.6425°Open in OpenStreetMap

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

Fair

17 kt · BF 5

Sustained to 17 kt · gusts to 19 kt · BF 5

Beaufort 5 — manageable for experienced crews but not relaxing. Reef before open water, plan a route with lee shore options, and expect harder docking and mooring picks.

Seas

Good

0.0 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

Poor

88%

18.0 mm total · 88% peak chance · 18 wet hour(s)

18 hour(s) with meaningful rain risk — expect reduced visibility, saturated decks, and slower reaction times. Full waterproof layers and clear eyewear help; consider delaying if comfort and sightlines matter for your route.

Air temperature

Good

20°C

Air 18–20°C · feels like 14–20°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

Good

3.8 nm

Lowest 3.8 nm · best 5.4 nm today

Generally clear sightlines (about 7.0–5.4 nm). Good for spotting traffic and shoreline references — still verify charted marks; glare and spray can fool you even on “clear” days.

Barometric pressure

Good

1019 hPa

1019 hPa ↑ rising (7 hPa change)

Pressure has risen about 7 hPa — weather often stabilizes, though wind and waves can lag by several hours. A positive sign if other factors already look favorable.

UV / sun

Good

UV 4.8

Moderate index — standard protection recommended. · peak near 10:00

Lower UV today, but reflection off water still adds exposure. Sunglasses and SPF remain cheap insurance on the water.

Why we said CAUTION

What pushed the score — how we score

Strong wind — experienced crew only
High
Winds up to 17 kt, gusts to 19 kt. Reef early and avoid exposed passages.
Heavy rain windows
High
2 hour(s) with high rain risk in the next 24 hours — poor visibility and comfort.
Poor visibility likely
High
Extended rain or low cloud expected — navigation and comfort suffer.

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 Fri, Oct 2, 11:45 AM (Japan Standard Time)

What should I do?

What to do next

Better window tomorrow around 8:00 AM
Conditions should improve around Tomorrow 8:00 AM (Japan Standard Time) — consider delaying departure until then.
At harbor: Sat, Oct 3, 8:00 AM (Japan Standard Time)
Reef early and wear PFDs
Reduce sail area before leaving the harbor and keep crew in life jackets.
Pack full wet-weather gear
Rain in the forecast — stow charts and radios in dry bags; visibility drops quickly in squalls.
Reduce speed and watch for traffic
Low visibility makes collisions and navigation errors more likely — use radar and AIS if equipped.
Consider a sheltered route
Stay inside the bay or in the lee of the land if you go out.

Day outlook

2-day · °C, kt, m, nm, mm

Today

Poor

23°C / 18°C

18.0 mm · 88% · 18 kt · BF 5

Not ideal: heavy rain likely (remaining hours).

Tomorrow

Poor

22°C / 18°C

0.5 mm · 36% · 13 kt · BF 4

Not ideal: strong wind or gusts, breezy conditions.

Forecast data from third-party providers.