Surf Forecast Surf Report

Keta Reef Oshima surfForecast / Izu Islands / Japan

information circle12 Day Weather and Surf, issued 8 pm Monday 31 Mar 2025 JST
Forecast update in hr  min  s Forecast update imminent
Keta Reef Oshima surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Keta Reef Oshima sea temperature is
17.2° C
(Which is slightly cooler than normal)


Best Forecast Surf Conditions for Keta Reef Oshima this week:

The surf forecast for Keta Reef Oshima over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Apr 03) at 3AM. The primary swell is predicted to be 1.6m and 11s period with a secondary swell of 0.8m and 9s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Keta Reef Oshima in the next 12 days are 2.3m 11s and forecast to arrive on Wednesday (Apr 02) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 6s period and expected on Tuesday (Apr 01) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 3rd Apr)5ft (1.6m) 11s
Best Surf 3AM (Thu 3rd Apr)5ft (1.6m) 11s
Most Powerful 3PM (Wed 2nd Apr)7.5ft (2.3m) 11s

Table - best surf conditions forecast for Keta Reef Oshima over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Sat
12
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
2
ENE
1.8
E
1.3
E
1.1
E
2.3
ESE
2.3
ESE
1.7
E
1.1
E
0.9
E
0.8
E
0.8
E
0.7
E
0.6
E
0.5
E
0.4
ENE
0.4
E
1.6
SSW
1.7
SSW
1.7
WSW
0.6
SW
0.6
ESE
0.5
ESE
0.6
ESE
1.1
SW
1.4
SW
0.7
ESE
0.6
ESE
0.6
ESE
0.7
ESE
0.6
ESE
1.1
SW
0.7
ESE
1.1
SW
0.6
ESE
1
S
1.5
S
Period(s) (?)61010910111111101413131312121166778885699899596979
Wave
Graph
(?)Metric surfscale
Energy (?)059330720110201164651269168236229171121734739171229251294432396014471595765586688756897342
Wind
(km/h)
50
NNE
65
NNE
55
NNE
60
N
60
NNE
45
NNE
30
NNE
10
ENE
15
SSW
35
NNE
25
NNE
0
N
5
SSW
5
NNE
30
SW
30
SW
30
SW
40
SW
25
W
10
NNE
15
SSW
25
SW
45
SW
50
SW
10
W
25
NE
25
ESE
10
SSE
25
SW
40
SW
45
WSW
10
NNE
25
ENE
35
NNE
30
NNE
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcrosscross-
off
cross-
off
glasscross-
on
cross-
off
cross-
on
cross-
on
cross-
on
cross-
on
oncross-
off
crosscross-
on
cross-
on
cross-
on
oncross-
off
offcross-
off
cross-
on
cross-
on
cross-
on
cross-
off
offcross-
off
cross-
off
off
High Tide
/ height (m)
5:51AM
1.43
7:17PM
1.34
6:14AM
1.41
8:14PM
1.23
6:36AM
1.38
9:25PM
1.11
6:58AM
1.31
11:35PM
1.04
7:16AM
1.22
7:02AM
1.10
3:03AM 11:29AM
1.11 0.98
3:13AM
1.14
1:45PM
1.04
3:26AM
1.17
2:48PM
1.13
3:40AM
1.22
3:35PM
1.21
3:56AM
1.27
4:14PM
1.26
4:14AM
1.31
4:51PM
1.29
Low Tide
/ height (m)
12:10AM
0.53
12:35PM
-0.07
12:41AM
0.69
1:17PM
-0.05
1:09AM
0.83
2:03PM
0.02
1:33AM
0.94
2:59PM
0.13
1:41AM
1.02
4:16PM
0.25
6:01PM
0.32
8:50AM
0.96
7:28PM
0.33
8:54AM
0.80
8:26PM
0.33
9:16AM
0.64
9:08PM
0.33
9:41AM
0.49
9:41PM
0.36
10:07AM
0.35
10:11PM
0.40
10:34AM
0.23
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Sat
12
Sunrise-5:31--5:28--5:28--5:26--5:24--5:24--5:22--5:20--5:20--5:18--5:16--5:16-
Sunset--6:01--6:02--6:04--6:05--6:06--6:06--6:07--6:07--6:08--6:08--6:09--6:10
mod rainlight raincloudlight rainlight raincloudlight rainrain showerspart cloudpart cloudpart cloudpart cloudrain showerspart cloudclearrain showersrain showersthunderstorm rain showersclearclearclearpart cloudcloudcloudclearclearpart cloudpart cloudcloudheavy raincloudcloudrain showersclearclear
Rain (mm)
83-32-21----1--1131-----------21--1--
Temp. °C86791011111316151213141416161617171315161717181516171818161617151517
Feels °C (?)-1-6-5-4-22312977111012981091210121287169121514127151371215

Short Range Forecast: Moderate rain (total 19mm), heaviest on Mon night. Very mild (max 16°C on Thu afternoon, min 5°C on Tue morning). Winds decreasing (gales from the NNE on Tue morning, light winds from the SE by Thu morning).

Days 3-6 Weather Summary Light rain (total 6mm), mostly falling on Sun afternoon. Very mild (max 17°C on Sun afternoon, min 11°C on Thu night). Winds increasing (calm on Fri afternoon, strong winds from the WSW by Sun afternoon).

Days 6-9 Weather Summary Some drizzle, heaviest during Sun night. Very mild (max 18°C on Tue night, min 13°C on Sun night). Winds increasing (calm on Mon morning, near gales from the WSW by Tue afternoon).

Long Range Forecast: Heavy rain (total 22mm), heaviest during Thu night. Very mild (max 18°C on Thu morning, min 14°C on Fri night). Mainly near gales.

  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
<span class="translation_missing" title="translation missing: en.leaflet.map_placeholder_alt">Map Placeholder Alt</span>
submit an eyeball surf report

Quick surf report for Keta Reef Oshima:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Keta Reef Oshima surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Information about the Keta Reef Oshima Surf forecast

The above surf forecast table for Keta Reef Oshima provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Keta Reef Oshima can be found by selecting the local surf guide option on the grey menu. Our Keta Reef Oshima 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 (Keta Reef Oshima) 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 Keta Reef Oshima 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.

Keta Reef Oshima is 1 km (1 miles) from the city of 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.

Nearest
Nearest