Santos (Hachijojima Island) surfForecast / Izu Islands / Japan

information circle16 Day Weather and Surf, issued 2 am Sunday 31 May 2026 JST
Forecast update in hr  min  s Forecast update imminent
Santos (Hachijojima Island) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Santos (Hachijojima Island) sea temperature is
23.4° C
(Which is 1.0°C warmer than normal for this time of year)

Santos (Hachijojima Island) surf forecast from 30 May 2026:

  • Best quality surf: Sunday 31 May, 6AM (local time) - 2.5ft (0.7m), 14s period, S swell with cross-offshore winds.
  • Most powerful swell: Wednesday 3 Jun, 3PM (local time) - 15ft (4.5m), 9s period, SSE swell with 3,134 kJ wave energy.
  • Next surfable swell (1★+): Sunday 31 May, 6AM (local time) - 2.5ft (0.7m), 14s period with S swell.

Best Forecast Surf Conditions for Santos (Hachijojima Island) this week:

The surf forecast for Santos (Hachijojima Island) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (May 31) at 6AM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 0.9m and 10s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Santos (Hachijojima Island) in the next 16 days are 4.5m 9s and forecast to arrive on Wednesday (Jun 03) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 9.0m 14s period and expected on Wednesday (Jun 03) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sun 31st May)2.5ft (0.7m) 14s
Best Surf 6AM (Sun 31st May)2.5ft (0.7m) 14s
Most Powerful 3PM (Wed 3rd Jun)15ft (4.5m) 9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 15mm), heaviest on Tue night. Warm (max 23°C on Sun morning, min 18°C on Sun afternoon). Winds increasing (calm on Sun morning, near gales from the ESE by Tue night).

Days 4-6 Weather Summary

Heavy rain (total 55mm), heaviest during Wed morning. Warm (max 25°C on Wed afternoon, min 22°C on Wed morning). Winds decreasing (severe gales from the SSW on Wed night, light winds from the N by Thu afternoon).

Sunday
31
Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
Saturday
6
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
S
12
1.1
S
12
1.2
S
11
1
S
10
1
S
10
0.7
E
10
0.7
E
10
0.7
E
10
1.3
SE
5
3
SE
8
4.5
SSE
9
8
WSW
13
1.1
ESE
9
1.1
ESE
9
1.7
NNE
9
1.7
NNE
9
1.7
NE
9
1.8
NE
10
2
NE
10
2.2
NE
11
1.8
NE
11
Wave Graph
Metric surfscale
Energy kJ
190
327
344
214
196
90
88
88
103
1131
3134
0
188
194
435
450
457
640
784
1090
851
Wind (km/h)
10
SW
15
SW
15
SE
15
E
20
ESE
30
SE
20
SE
25
SSE
25
SSE
60
SE
70
SSE
60
SW
30
NW
10
N
30
NE
30
NE
35
NE
30
ENE
35
ENE
30
ENE
30
E
cross-off
cross-off
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-off
off
cross-off
cross
cross-on
cross-on
cross-on
cross-on
cross-on
on
High Tide
6:27PM1.38m
4:35AM1.46m
7:02PM1.38m
5:06AM1.44m
7:37PM1.37m
5:39AM1.42m
8:12PM1.35m
6:13AM1.40m
8:49PM1.33m
6:50AM1.38m
9:27PM1.32m
7:31AM1.35m
10:07PM1.32m
Low Tide
11:22AM0.14m
11:18PM0.97m
11:54AM0.11m
11:52PM0.96m
12:27PM0.11m
00:26AM0.96m
1:01PM0.15m
00:59AM0.97m
1:37PM0.21m
1:35AM0.99m
2:15PM0.28m
2:18AM1.00m
2:56PM0.37m
cloud
light rain
part cloud
clear
part cloud
cloud
cloud
cloud
heavy rain
heavy rain
thunderstorm
rain showers
cloud
cloud
cloud
light rain
part cloud
part cloud
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:33
4:33
4:31
4:31
4:31
4:31
4:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:43
6:43
6:44
6:45
6:45
6:45
6:45
1
14
19
18
16
2
Temp °C
23
22
19
20
21
21
21
22
22
23
25
24
23
22
23
22
22
22
22
22
22
24
18
14
19
19
18
20
21
20
15
17
13
20
23
22
19
18
18
17
17
18
Swell 1
Height (m)
Direction
Period (s)
0.9
E
10
1.1
S
12
1.2
S
11
1
S
10
1.2
SSW
13
1.3
SSW
12
1.7
SW
13
1.8
SW
13
1.8
SW
14
2.2
SW
15
4.5
WSW
16
3
SW
11
2.3
SW
10
1.7
NNE
9
1.7
NNE
9
1.7
NE
9
1.8
NE
10
0.6
SSW
7
0.7
SSW
8
1.8
NE
11
Energy kJ
159
327
344
214
472
477
1011
1034
1220
2092
10216
2301
958
435
450
457
640
31
64
851
Swell 2
Height (m)
Direction
Period (s)
0.8
S
12
0.9
E
10
0.8
E
10
0.9
SSW
15
1
S
10
1
SW
15
0.7
E
10
0.7
E
10
0.7
E
9
1
E
9
1.1
ESE
9
1.1
ESE
9
1.6
SW
8
0.9
S
8
0.8
SSW
7
0.7
SW
7
0.3
SE
11
0.1
SE
11
0.6
SSW
8
Energy kJ
190
159
125
353
196
424
88
88
81
160
188
194
358
100
62
47
18
4
45
Swell 3
Height (m)
Direction
Period (s)
0.5
WSW
6
0.3
SE
12
0.3
WSW
7
0.8
E
10
0.8
E
10
0.7
E
10
0.3
SE
11
0.3
SE
12
0.3
SE
11
0.1
SE
13
0.6
N
6
0.9
ESE
8
0.8
WSW
8
0.7
WSW
7
0.3
SE
11
0.5
E
8
0.4
ENE
15
Energy kJ
23
22
9
122
117
90
19
21
19
7
24
101
66
48
19
35
86
Wind waves
Height (m)
Direction
Period (s)
0.5
WSW
6
0.8
SE
4
1
SE
5
1.1
SE
5
1.3
SE
5
3
SE
8
4.5
SSE
9
8
WSW
13
1.3
NW
6
0.6
ESE
9
0.5
E
8
2
NE
10
2.2
NE
11
1
ESE
5
Energy kJ
23
20
49
71
103
1131
3134
21804
126
58
36
784
1090
48
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
2
3
2
3
4
4
3
1
2
3
3
4
3
1
1
1
1
1
Distance (km)
152
0
152
196
152
196
152
196
152
196
237
226
511
196
152
204
191
191
204
204
191
Best forecast wave conditions in Izu Islands
Rating
(10 max)
1
2
2
3
3
4
4
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
1
2
3
3
4
4
3
4
4
4
1
2
4
6
4
3
2
1
1
1
1
Header Global
Rating
(10 max)
7
7
6
5
5
4
4
5
5
4
5
4
4
5
4
5
4
4
4
5
9
  • 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 Santos (Hachijojima Island) Surf forecast

The above surf forecast table for Santos (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 Santos (Hachijojima Island) can be found by selecting the local surf guide option on the grey menu. Our Santos (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 (Santos (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 Santos (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.

Santos (Hachijojima Island) is 192 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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