When To Go · Destination Guide

Miura Peninsula and Sagami Coast

Rocky reefs, small marine life and coastal Japan within reach of Tokyo.

When to go

Best time to visit Miura Peninsula and Sagami Coast

October-November is the suggested compromise for a scuba-led visit with time ashore; summer better suits travelers prioritizing warmth at the surface.

Best overall window

October-November

Read the Kanagawa seasonal explanation alongside current warnings.

Outside that window

October can still bring substantial rain and storm disruption; retain an indoor or land-based alternative.

Choose your trip style

Start with the overall answer, then switch only when scuba, freedive, snorkel, or topside timing changes the trip in a meaningful way.

Month-by-month planner

The overall row stays visible so you can compare it against the currently selected scope.

BestGoodTradeoffsMore variable

Scope	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Overall	Overall - Jan: Best	Overall - Feb: Best	Overall - Mar: Tradeoffs	Overall - Apr: Tradeoffs	Overall - May: Tradeoffs	Overall - Jun: More variable	Overall - Jul: More variable	Overall - Aug: More variable	Overall - Sep: More variable	Overall - Oct: Tradeoffs	Overall - Nov: Tradeoffs	Overall - Dec: More variable

Wildlife goals and seasonal highlights

These do not replace the overall planner. Use them only if a specific animal or event is driving your trip dates.

Hayama winter-spring lumpsuckers and seaweed habitat
Best for Scuba
Dec to Apr
JanFebMarAprMayJunJulAugSepOctNovDec
NANA highlights winter and spring lumpsuckers alongside seasonal seaweed growth.
Cool-season nudibranch observation
Best for Scuba
Dec to Apr
JanFebMarAprMayJunJulAugSepOctNovDec
Yujiro Lighthouse Offshore has documented winter nudibranch interest; Miyagawa's guide extends the broad opportunity into spring.
Miyagawa squid egg-laying habitat
Best for Scuba
May to Jun
JanFebMarAprMayJunJulAugSepOctNovDec
The Kasago-ne guide describes squid egg-laying structures installed in May-June.

Always true for this destination

Wind Exposed Departures.
Visibility can swing more from day to day.
Read the Kanagawa seasonal explanation alongside current warnings.

Seasonal cautions

Aug to Oct: JMA identifies late August through early October as the main historical typhoon-approach period; effects are possible outside it.
Jul to Aug: Build shade, water and less strenuous afternoon options into land-based plans.

Built from climate references, access rules, and destination operators. Wildlife timing and route flexibility can shift year to year.

Scope

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Dec

Overall