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

information circle12 Day Weather and Surf, issued 8 am 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 Sunday (Dec 28) at 12AM. The primary swell is predicted to be 1.1m and 13s period with a secondary swell of 0.9m and 6s. 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+)12AM (Sun 28th Dec)3.5ft (1.1m) 13s
Best Surf12AM (Sun 28th Dec)3.5ft (1.1m) 13s
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 50mm), heaviest during Wed night. Warm (max 21°C on Thu morning, min 8°C on Fri night). Winds increasing (moderate winds from the WSW on Wed night, gales from the W by Fri morning).

Days 3-6 Weather Summary Light rain (total 9mm), mostly falling on Sun night. Very mild (max 16°C on Mon night, min 9°C on Sat morning). Winds decreasing (fresh winds from the WNW on Sat morning, light winds from the ENE by Sun afternoon).

Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
1
0
0
0
0
0
0
1
2
3
0
1
0
0
1
1
1
2
0
Swell
Height Map
Wave Height (m) & direction (?)
2.2
SE
3
SSE
2.5
S
0.9
ENE
0.8
ENE
0.8
E
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
1.2
ENE
1.2
E
1
E
0.8
NE
0.9
NE
Period(s) (?)778111114141414141413141413126771615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)411784827207154239497497549542519408322261246175115131103299355
Wind
(km/h)
50
SSE
55
S
45
WSW
45
WSW
45
WSW
40
WNW
70
W
55
NW
50
WNW
40
WNW
30
WNW
20
WNW
35
NW
20
NNW
25
E
15
SE
20
WSW
25
W
25
WNW
20
WNW
40
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
crosscross-
off
cross-
off
cross-
off
offoffoffoffoffoffoffoffcross-
off
cross-
on
cross-
on
cross-
off
offoffoffcross-
off
High Tide
/ height (m)
6:59PM
1.40
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
Low Tide
/ height (m)
1:32PM
0.89
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
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Sunrise6:39--6:41--6:41--6:41--6:41--6:41--6:43--
Sunset-4:37--4:38--4:39--4:39--4:40--4:40--4:42-
cloud
part cloud
rain showers
thunderstorm
thunderstorm
light rain
part cloud
cloud
clear
cloud
cloud
light rain
clear
clear
rain showers
rain showers
part cloud
part cloud
cloud
cloud
light rain
Rain (mm)
--41234-----1--53----3
Temp. °C19202021201911119101113121415151516171617
Feels °C (?)101114151313-4-2-314531010121010111212
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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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