Kaiser's (Hachijojima Island) surfForecast / Izu Islands / Japan

information circle12 Day Weather and Surf, issued 8 pm Wednesday 24 Dec 2025 JST
Forecast update in hr  min  s Forecast update imminent
Kaiser's (Hachijojima Island) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kaiser's (Hachijojima Island) sea temperature is
22.2° C
(Which is 1.6°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Kaiser's (Hachijojima Island) this week:

The surf forecast for Kaiser's (Hachijojima Island) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Dec 27) at 3PM. The primary swell is predicted to be 1.2m and 14s period with a secondary swell of 0.8m and 9s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Kaiser's (Hachijojima Island) in the next 12 days are 2.5m 8s and forecast to arrive on Thursday (Dec 25) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 9s period and expected on Friday (Dec 26) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Sat 27th Dec)4ft (1.2m) 14s
Best Surf 3PM (Sat 27th Dec)4ft (1.2m) 14s
Most Powerful 3AM (Thu 25th Dec)8ft (2.5m) 8s

Table - best surf conditions forecast for Kaiser's (Hachijojima Island) over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 52mm), heaviest during Wed night. Warm (max 21°C on Wed night, min 9°C on Fri night). Winds decreasing (gales from the W on Thu night, moderate winds from the NW by Sat afternoon).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Sat night. Very mild (max 17°C on Mon night, min 12°C on Sat night). Winds increasing (light winds from the N on Sun afternoon, strong winds from the W by Mon night).

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wed
31
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
2
3
1
0
2
0
1
1
0
0
0
1
0
1
Swell
Height Map
Wave Height (m) & direction (?)
2.5
S
0.9
ENE
0.7
NE
0.9
ENE
1.2
ENE
1.2
ENE
1.2
ENE
1.2
ENE
1.2
ENE
1.1
ENE
0.9
ENE
0.9
ENE
0.9
ENE
0.8
ENE
0.8
ENE
0.6
ENE
0.4
NE
0.6
NE
0.7
NE
0.7
NE
0.7
NE
Period(s) (?)81111141414141414131414131212121616141413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)89220712331350449754954952740832632224617816911395155206181173
Wind
(km/h)
40
S
40
SW
45
WSW
50
WNW
65
W
55
WNW
50
WNW
25
NW
20
NW
30
NW
25
NW
10
N
10
SE
15
SW
20
WSW
35
W
40
WNW
35
NW
30
WNW
35
NW
30
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
cross-
off
offoffoffoffoffoffoffcross-
off
cross-
off
oncross-
off
cross-
off
cross-
off
offoffoffoffoff
High Tide
/ height (m)
9:12AM
1.31
7:42PM
1.36
9:48AM
1.31
8:35PM
1.27
10:27AM
1.30
9:48PM
1.16
11:08AM
1.29
11:33PM
1.06
11:54AM
1.27
1:52AM
1.06
12:44PM
1.26
3:29AM
1.14
1:37PM
1.27
Low Tide
/ height (m)
2:13AM
0.20
2:16PM
0.89
2:51AM
0.30
3:14PM
0.88
3:33AM
0.42
4:28PM
0.81
4:23AM
0.56
5:51PM
0.68
5:23AM
0.70
7:11PM
0.47
6:41AM
0.81
8:16PM
0.23
8:09AM
0.88
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wed
31
Sunrise-6:41--6:41--6:41--6:41--6:41--6:43--6:43-
Sunset--4:38--4:39--4:39--4:40--4:40--4:42--4:43
thunderstorm
thunderstorm
thunderstorm
rain showers
cloud
cloud
part cloud
cloud
part cloud
rain showers
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
cloud
cloud
cloud
Rain (mm)
41353-----2-----------
Temp. °C212120181111101012121213131515171714131213
Feels °C (?)18151312-3-2-2367599109886545
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Kaiser's (Hachijojima Island) Surf forecast

The above surf forecast table for Kaiser's (Hachijojima Island) provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Kaiser's (Hachijojima Island) can be found by selecting the local surf guide option on the grey menu. Our Kaiser's (Hachijojima Island) surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Kaiser's (Hachijojima Island)) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Kaiser's (Hachijojima Island) may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Kaiser's (Hachijojima Island) is 191 km (119 miles) from Oshima. If you plan a holiday in Izu Islands, look for hotels and other accommodation in Oshima. Oshima has rooms for a wide range of budgets as well as car hire and transport links.

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