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Surf Forecasts:

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

information circle16 Day Weather and Surf, issued 8 pm Tuesday 17 Mar 2026 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
19.3° C
 (Which is slightly warmer than usual)

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

The surf forecast for Kaiser's (Hachijojima Island) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Mar 21) at 9PM. The primary swell is predicted to be 1.1m and 13s period with a secondary swell of 1.1m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Kaiser's (Hachijojima Island) in the next 16 days are 2.5m 13s and forecast to arrive on Wednesday (Mar 18) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 8s period and expected on Thursday (Mar 19) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sat 21st Mar)3.5ft (1.1m) 13s
Best Surf 9PM (Sat 21st Mar)3.5ft (1.1m) 13s
Most Powerful12AM (Wed 18th Mar)8ft (2.5m) 13s

Table - best surf conditions forecast for Kaiser's (Hachijojima Island) over the next 16 days.

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 15mm), heaviest on Thu afternoon. Very mild (max 18°C on Wed night, min 14°C on Thu night). Winds increasing (moderate winds from the E on Tue night, near gales from the SW by Thu morning).

Days 3-6 Weather Summary Mostly dry. Very mild (max 17°C on Sun night, min 13°C on Sat morning). Winds decreasing (near gales from the WNW on Fri night, light winds from the NW by Sat night).

Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tue
24
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
2
0
0
2
1
0
0
0
0
0
1
2
2
0
0
0
0
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.5
ENE
2
ENE
2.1
ENE
2.2
ENE
2.1
ENE
1.7
ENE
1.4
ENE
1.2
ENE
1.2
ENE
1.2
ENE
1.3
ENE
1.6
NE
1.1
NE
1
NE
0.9
NE
0.7
NE
0.6
ENE
0.6
ENE
0.4
ENE
0.4
ENE
1.7
NNE
Period(s) (?)13131314141413131314141313121212111111117
Wave
Graph
(?)Metric surfscale
Energy kJ (?)25281380147419691633107567347645456160789137028720513582824638279
Wind
(km/h)
25
E
25
SE
25
SSW
40
SSW
55
SW
40
WNW
35
W
35
WNW
50
WNW
50
NW
20
E
15
SE
20
NNW
15
WNW
20
W
30
W
30
W
35
W
35
W
15
N
35
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		crosscrosscross-
off		offoffoffoffoffoncross-
on		cross-
off		offoffoffoffcross-
off		offcross-
off		cross-
on
High Tide
/ height (m)
5:18AM
1.31
4:56PM
1.42
5:37AM
1.37
5:39PM
1.46
5:58AM
1.40
6:24PM
1.46
6:20AM
1.41
7:12PM
1.39
6:42AM
1.39
8:03PM
1.28
7:04AM
1.35
8:59PM
1.14
7:26AM
1.29
Low Tide
/ height (m)
10:51PM
0.11
10:59AM
0.43
11:23PM
0.16
11:31AM
0.29
11:54PM
0.24
12:07PM
0.16
12:25AM
0.36
12:44PM
0.06
12:56AM
0.50
1:23PM
-0.00
1:24AM
0.63
2:07PM
-0.01
1:47AM
0.75
2:56PM
0.02
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tue
24
Sunrise-5:48--5:47--5:45--5:43--5:43--5:41--5:39-
Sunset--5:50--5:50--5:51--5:52--5:52--5:52--5:53
rain showers
rain showers
part cloud
part cloud
light rain
rain showers
clear
clear
clear
part cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
part cloud
cloud
heavy rain
Rain (mm)
42--27--------------14
Temp. °C161617181816161414141414141515171717181613
Feels °C (?)1112139998533101012101011111011127
  • 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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View detailed surf forecast for Kaiser's (Hachijojima Island) at:
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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 16 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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