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Rock Island ratings
Quality on a good day: 2.0
Consistency of Surf: 3.0
Difficulty Level: 1.0
Crowds: 3.0

Overall: 2.7

See all 18 ratings

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Surf Report Feed

Rock Island Surf Guide

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.

Rock Island Spot Info

Type:Rating:
Icon reef  redReefIcon  s32.7
Reliability:Todays Sea Temp*:
fairly consistent
15.2°C*ocean temperature recorded from satellite

Surfing Rock Island:

The best conditions reported for surf at Rock Island occur when a South swell combines with an offshore wind direction from the North-northeast.

Surf Forecasts:

What's the best time of year to surf Rock Island (for consistent clean waves)?

octoberBest Season: autumn
The best time of year for surfing Rock Island with consistent clean waves (rideable swell with light / offshore winds) is during Autumn and most often the month of October. Clean surfable waves are typically found 11% of the time in October while 12% of the time it tends to be blown out. For the remaining 77% of the time it is considered too small by most surfers but may still be OK for beginners and groms at times.
clean
11%
Surfable waves that hold up well for longer rides in prevailing cross-offshore, offshore or light wind conditions.
blown out
12%
Surfable sized waves that are of poorer quality due to prevailing onshore, cross-onshore or windy conditions (may be preferable for kitesurfing).
too small
77%
Waves usually considered too small for good surf. Some wave-magnet breaks may still work though if conditions are right (on occasion).

Explore Rock Island Location Map

Interactive Rock Island surf break location map. View information about nearby surf breaks, their wave consistency and rating compared to other spots in the region. Current swell conditions from local buoys are shown along with live wind speed and direction from nearby weather stations. Click icons on the map for more detail. 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.

Icon breakBreak
Icon legend buoysLive Wave Height (m)
Icon legend windLive Wind Speed (km/h)
Please note that some surf spot locations are approximate to protect their exact location while others are not shown at close zoom level.
Rock Island Surf Forecasts:
Todays Surf Summary
Friday, 5 March 2021, 16:52 Local Time
FriSat
6PM9PM0AM3AM
Wave (m) 0.7
ESE
0.7
ESE
0.7
ESE
0.7
ESE
Period (s) 11 11 11 11
Wind (km/h) 0
SSE 0
N 5
WNW 5
NNW
Wind State glass glass cross-
off
glass

Swell History at Rock Island

Surf stats for Rock Island, see the swell variation by month or season on the history page here.

Wind History at Rock Island

Wind stats for Rock Island, see the variation in direction and stength by month or season on the history page here.

Other Nearby Breaks Closest To:

Discover surf breaks near Rock Island. Click below to view there surf guides.

    • Icon beachBeach/jetties
    • Icon  s32.6
    Reliability: fairly consistent
    0km away
    • Icon reef  redReef and point
    • Icon  s33.0
    Reliability: inconsistent
    1km away
    • Icon beachBeach
    • Icon  s32.9
    Reliability: inconsistent
    2km away
    • Icon reef  redReef
    Reliability: inconsistent
    3km away
    • Icon river  redRiver
    • Icon  s33.2
    Reliability: inconsistent
    4km away

Wave Buoys Nearest To Rock Island:

A M8.1 earthquake near the Kermadec Islands north of New Zealand may pose risk of regional tsunamis. Vanuatu, New Caledonia and northern parts of New Zealand are most vulnerable.