Keta Reef Oshima Surf Break

Lat Long: 34.74° N 139.36° E

Keta Reef Oshima 48 hour detailed Surf Forecast

Issued: 2 am 14 Jul 2026 (local time)

Forecast update in  hr  min

Today's Keta Reef Oshima sea temperature is
24.8° C
0.9° 

Keta Reef Oshima surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Keta Reef Oshima today (14 Jul):

  • Morning surf: Morning surf (14 Jul, local time) - 2.5ft (0.8m), 10s period with SSW swell.
  • Afternoon surf: Afternoon surf (14 Jul, local time) - 3ft (0.9m), 10s period with SSW swell.
  • Evening surf: Evening surf (14 Jul, local time) - 2.5ft (0.8m), 10s period with SSW swell.

The current surf forecast for Keta Reef Oshima at 7AM is: 0.9m 10s primary swell from a South-southwest direction and 0.6m 11s secondary swell from a Southwest direction (forecast issued at 02:00am July 14). The wind direction is predicted to be glassy.

Time (JST) & DateWave HeightWave Period
Morning (14 Jul)2.5ft (0.8m)10s
Afternoon (14 Jul)3ft (0.9m)10s
Evening (14 Jul)2.5ft (0.8m)10s

Table - waves today at Keta Reef Oshima. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Warm (max 27°C on Tue morning, min 26°C on Tue night). Winds increasing (calm on Tue morning, fresh winds from the SW by Wed night).

Tuesday
14
Wednesday
15
Thursday
16
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SSW
11
0.9
SSW
11
0.9
SSW
10
0.8
SSW
10
0.9
SSW
11
0.9
SSW
10
0.9
SSW
10
0.8
SSW
10
0.8
SSW
10
0.8
SSW
10
0.7
SSW
9
0.7
SSW
9
0.7
SSW
9
0.6
SSW
9
0.6
SSW
9
0.8
SSW
9
0.9
SSW
9
1
SSW
5
0.5
E
9
0.9
SSW
5
0.8
SSW
5
0.5
E
8
0.5
E
8
0.5
E
9
Wave Graph
Metric surfscale
Energy kJ
183
183
158
123
176
163
157
127
125
109
78
75
73
55
54
103
138
44
39
37
35
35
36
38
Wind (km/h)
10
WSW
5
S
5
ESE
5
ESE
10
SSE
15
S
20
SSW
20
SSW
20
SSW
20
SW
15
SSW
15
SSW
20
SSW
30
SSW
30
SW
30
SSW
30
SW
30
SSW
30
SW
20
SW
15
WSW
15
SSW
15
SSW
15
SSW
Wind State
cross-on
glassy
cross-off
glassy
cross-off
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
3:13AM1.51m
6:01PM1.47m
4:07AM1.56m
6:35PM1.47m
4:58AM1.57m
7:07PM1.45m
Low Tide
10:12PM1.07m
10:38AM-0.10m
10:57PM1.01m
11:24AM-0.11m
11:38PM0.94m
12:07PM-0.05m
clear
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:39
4:39
4:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:55
6:55
 mm
Temp °C
27
27
27
27
27
27
27
27
26
26
26
26
26
27
27
26
26
26
26
26
26
27
27
27
Feels °C
30
30
30
31
30
29
28
29
28
28
29
29
27
27
27
27
26
26
27
28
29
30
30
30
  • 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
How to use the Wavefinder 

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