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Rock Island in Kanagawa and Chiba is an exposed reef break that has pretty consitent surf Offshore winds blow from the north northeast with some shelter here from southeast winds. Windswells are much more typical than groudswells and the ideal wave angle is from the south. There is a left hand reef break. Good surf at all stages of the tide. Sometimes crowded. Submerged rocks are a hazard.

Secret spot? We can hide it!

Overall Rock Island Surf Consistency and Wind Distribution

IMPORTANT: Beta version feature! Swell heights are open water values from NWW3. There is no attempt to model near-shore effects. Coastal wave heights will generally be less, especially if the break does not have unobstructed exposure to the open ocean.

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This picture illustrates the range of swells directed at Rock Island through a typical ... (show all text)

The figure describes how commonly and how strongly the wind blows from different direct... (show all text)

Also see Rock Island surf quality by season and Rock Island surf quality by month.

Select Rock Island Location Map Detail:

Regional Map | Local Map | Detailed Map

Contours:

Roads & Rivers:

Select a surf break from the menu Select to locate on the map

Use this relief map to navigate to Japan - Kanagawa and Chiba surf breaks and tide stations that are in the area of Rock Island

Other Nearby Surf Breaks closest to Rock Island:   (click location name for more details)
Closest break	zushi Marina	0 mi
Second closest break	Osaki	1 mi
Third closest break	Kamakura	1 mi
Fourth closest break	Hayama	4 mi
Fifth closest break	Inamura Point	4 mi
Wave buoys nearest to Rock Island:
Closest wave buoy	Western Aleutians Buoy	2238 mi
Second closest wave buoy	Bering Sea Buoy	2484 mi
Third closest wave buoy	Southeast Bering Sea Buoy	2666 mi
Fourth closest wave buoy	Shumagin Islands Buoy	3113 mi
Fifth closest wave buoy	South Aleutians Buoy	3364 mi
Tide stations nearest to Rock Island:
Closest tide station	Sinzyuku Wan (Zusi), Kanagawa, Japan	1 mi
Second closest tide station	E-No-Sima, Kanagawa, Japan	4 mi
Third closest tide station	Naga Ura, Kanagawa, Japan	6 mi
Fourth closest tide station	Yokosuka, Kanagawa, Japan	6 mi
Fifth closest tide station	Odawa Wan, Kanagawa, Japan	6 mi
Ski Resorts closest to Rock Island:
Closest ski area	Yatsugatake Sailer Valley (Japan)	73 mi
Second closest ski area	Okushiga Kogen (Japan)	81 mi
Third closest ski area	Fujimi Kogen (Japan)	81 mi
Fourth closest ski area	Koumi Riekkusu Ski Valley (Japan)	83 mi
Fifth closest ski area	Yachiho Kogen (Japan)	85 mi
Town and city forecasts close to Rock Island:
Closest city location	Kamakura (Japan)	2 mi
Second closest city location	Zushi (Japan)	2 mi
Third closest city location	Hayama (Japan)	2 mi
Fourth closest city location	Yokosuka (Japan)	6 mi
Fifth closest city location	Fujisawa (Japan)	7 mi

• The closest passenger airport to Rock Island is Tokyo International Airport (HND) in Japan, 35 km (22 miles) away (directly).
• The second nearest airport to Rock Island is Yokota Ab Airport (OKO), also in Japan, 54 km (34 miles) away.
• Third is Oshima Airport (OIM) in Japan, 59 km (37 miles) away.
• New Tokyo International Airport (NRT) in Japan is 92 km (57 miles) away.
• Miyakejima Airport (MMY), also in Japan is the fifth nearest airport to Rock Island and is 136 km (84 miles) away.