Santos (Hachijojima Island) surfForecast / Izu Islands / Japan

information circle16 Day Weather and Surf, issued 8 am Saturday 25 Apr 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
22.1° C
(Which is 2.1°C warmer than normal for this time of year)

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 Thursday (Apr 30) at 12AM. The primary swell is predicted to be 0.4m and 9s period with a secondary swell of 0.4m and 8s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Santos (Hachijojima Island) in the next 16 days are 2.5m 8s and forecast to arrive on Saturday (Apr 25) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 7s period and expected on Wednesday (Apr 29) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Thu 30th Apr)1.5ft (0.4m) 9s
Best Surf 3PM (Sat 2nd May)4.5ft (1.3m) 8s
Most Powerful12PM (Sat 25th Apr)8ft (2.5m) 8s

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

Heavy rain (total 39mm), heaviest during Sun night. Warm (max 21°C on Mon morning, min 16°C on Sat morning). Mainly strong winds.

Days 4-6 Weather Summary

Heavy rain (total 22mm), heaviest during Thu morning. Warm (max 21°C on Wed morning, min 15°C on Thu morning). Winds decreasing (strong winds from the SW on Wed morning, light winds from the NNW by Thu morning).

Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
1
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
3
ENE
8
2.5
ENE
8
2.3
ENE
8
1.4
NE
15
1.4
NE
14
2.2
ESE
7
1.1
NE
13
0.9
NE
12
1.4
NE
7
1.1
NE
8
0.8
NE
7
0.8
NE
9
0.6
NE
8
0.4
E
9
0.4
E
9
0.4
SE
8
0.4
SE
9
0.6
SE
9
1.1
NE
6
1.8
NE
6
1.5
E
6
Wave Graph
Metric surfscale
Energy kJ
903
801
592
773
731
444
374
223
194
125
62
88
44
25
24
25
29
54
73
261
190
Wind (km/h)
45
ENE
45
E
35
E
35
E
30
ESE
35
SSW
45
SW
45
W
10
ESE
15
S
20
SSW
35
SW
40
SW
40
SW
25
W
15
NNW
20
N
20
NE
50
ENE
35
NE
30
NE
cross-on
cross-on
cross-on
cross-on
on
cross
cross-off
cross-off
on
cross
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
High Tide
10:05AM1.10m
2:45AM1.12m
12:52PM1.10m
3:04AM1.21m
2:30PM1.20m
3:24AM1.32m
3:33PM1.29m
3:46AM1.41m
4:23PM1.36m
4:06AM1.49m
5:07PM1.40m
4:26AM1.53m
5:46PM1.41m
Low Tide
6:41PM0.38m
7:51AM0.92m
7:52PM0.45m
8:48AM0.77m
8:45PM0.52m
9:30AM0.61m
9:28PM0.59m
10:07AM0.47m
10:04PM0.67m
10:40AM0.35m
10:36PM0.74m
11:11AM0.26m
11:05PM0.80m
cloud
cloud
part cloud
cloud
light rain
heavy rain
thunderstorm
clear
rain showers
clear
clear
part cloud
part cloud
clear
rain showers
mod rain
mod rain
light rain
light rain
light rain
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:00
4:58
4:58
4:56
4:56
4:54
4:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:16
6:17
6:19
6:19
6:20
6:21
6:22
3
32
2
2
2
10
6
4
1
1
Temp °C
17
17
17
17
18
20
21
18
18
19
20
20
21
20
20
15
15
18
18
18
18
9
8
9
10
13
16
15
10
17
17
17
17
15
14
15
13
13
15
10
11
12
Swell 1
Height (m)
Direction
Period (s)
0.9
NE
14
1
NE
13
1
NE
13
1.4
NE
15
1.4
NE
14
1.1
NE
13
1.1
NE
13
1.7
SW
7
1.4
NE
7
1.1
NE
8
0.8
NE
7
0.8
NE
9
0.6
NE
8
0.4
E
9
0.4
E
9
1.1
WSW
7
0.9
WSW
7
0.6
NNE
6
0.6
SE
10
0.6
SE
10
0.6
SE
10
Energy kJ
297
342
311
773
731
444
374
303
194
125
62
88
44
24
24
111
62
25
73
74
77
Swell 2
Height (m)
Direction
Period (s)
0.6
SW
8
0.4
SW
8
0.6
NE
16
0.1
SW
7
0.1
SE
13
0.1
SW
7
1
ESE
7
0.9
NE
12
1
SW
7
0.7
SW
7
0.6
E
8
0.5
E
8
0.5
E
8
0.4
NE
8
0.4
SE
8
0.4
SE
8
0.4
SE
9
0.6
SE
9
0.3
WSW
5
0.4
NE
13
0.4
NE
12
Energy kJ
53
16
211
2
7
2
93
223
97
44
46
30
35
25
18
25
29
54
5
44
37
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
11
0.2
S
6
0.3
SW
7
0.1
SE
13
0.1
SE
13
0.1
S
16
0.1
SE
12
0.7
ESE
7
0.6
NE
12
0.6
E
8
0.5
SW
6
0.1
SE
11
0.1
SE
11
0.1
SE
8
0.3
NE
8
0.3
E
9
0.3
E
9
0.4
WSW
6
0.3
NE
11
0.2
WNW
5
0.1
NE
8
Energy kJ
5
3
8
7
7
5
6
51
114
43
20
5
5
3
10
14
13
14
19
3
3
Wind waves
Height (m)
Direction
Period (s)
3
ENE
8
2.5
ENE
8
2.3
ENE
8
2
E
7
1.9
E
7
2.2
ESE
7
2.1
SW
7
1.4
NNE
7
0.9
SW
6
1.7
WSW
6
2.3
WSW
7
1.7
WSW
7
1
NW
6
0.7
NW
6
0.5
NW
5
1.1
NE
6
1.8
NE
6
1.5
E
6
Energy kJ
903
801
592
411
338
423
381
168
49
209
473
270
76
36
14
67
261
190
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
3
4
2
2
1
1
1
1
1
1
1
2
1
1
1
1
1
Distance (km)
480
191
191
204
573
495
227
231
196
196
524
573
297
495
0
152
227
231
513
511
204
Best forecast wave conditions in Izu Islands
Rating
(10 max)
1
1
1
2
Best forecast wave conditions in Japan
Rating
(10 max)
4
1
4
1
3
4
2
2
1
1
1
1
1
2
1
2
1
1
1
1
1
Header Global
Rating
(10 max)
5
5
4
5
5
7
8
5
6
5
4
9
6
5
9
6
5
5
5
5
5
  • Map Icons:
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  • 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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