Aha Rivermouth surfForecast / Okinawa / Japan

information circle48hr Weather and Surf, issued 8 am Thursday 30 Apr 2026 JST
Forecast update in hr  min  s Forecast update imminent
Aha Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Aha Rivermouth sea temperature is
23.6° C
(Which is slightly cooler than normal)

How big are the waves at Aha Rivermouth today?

The current surf forecast for Aha Rivermouth at 12PM is: 0.5m 7s primary swell from a North-northwest direction and 0.2m 8s secondary swell from a East-northeast direction (forecast issued at 08:00am April 30). An open ocean swell of 1.3m 5s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (JST) & DateWave HeightWave Period
Morning (30 Apr)1.5ft (0.4m)7s
Afternoon (30 Apr)1.5ft (0.5m)6s
Evening (30 Apr)3.5ft (1.0m)7s

Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 7mm), mostly falling on Thu morning. Warm (max 24°C on Thu morning, min 18°C on Fri morning). Mainly fresh winds.

Thursday
30
Friday
1
Saturday
2
Sun
3
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
12 AM
3 AM
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
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><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)
0.4
NNW
7
0.4
NNW
7
0.5
NNW
7
0.5
SE
6
0.5
NNW
7
1
NW
7
1.2
NW
7
1.2
NW
7
1.4
NW
7
1.4
NW
7
1.5
NNW
7
1.4
NNW
7
1.4
NNW
7
1.2
NNW
7
1.1
N
7
1
N
7
0.9
N
7
0.8
N
7
0.6
ESE
10
0.6
ESE
9
0.6
ESE
9
0.6
ESE
10
0.6
ESE
10
0.6
ESE
10
Wave Graph
Metric surfscale
Energy kJ
18
20
29
17
28
88
135
143
200
194
198
176
168
139
113
92
77
60
71
69
69
72
75
75
Wind (km/h)
25
SSW
30
SSW
25
SSW
25
WNW
25
NW
25
NW
25
NW
25
NW
30
NW
30
NNW
30
NNW
30
N
25
N
20
NNE
20
NE
15
NE
15
E
15
E
15
ESE
20
SE
20
SE
20
SSE
25
SSE
25
S
cross-off
off
off
cross-off
cross
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
High Tide
5:39AM1.77m
6:23PM1.70m
6:04AM1.81m
6:56PM1.70m
6:27AM1.83m
7:27PM1.67m
Low Tide
12:04PM0.21m
00:09AM0.58m
12:34PM0.15m
00:35AM0.64m
1:03PM0.11m
1:00AM0.70m
thunderstorm
light rain
thunderstorm
light rain
light rain
cloud
cloud
light rain
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:48
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:58
6:59
6:59
1
2
1
2
1
1
Temp °C
24
23
24
22
21
20
20
20
19
18
19
19
19
19
19
19
19
19
20
20
21
20
21
22
23
21
23
21
20
18
18
17
14
13
13
14
14
15
15
16
16
16
17
17
18
17
18
20
Swell 1
Height (m)
Direction
Period (s)
0.4
NNW
7
0.4
NNW
7
0.5
NNW
7
0.6
S
5
0.7
SSE
6
0.6
SSE
6
0.4
SSE
5
0.5
ESE
9
0.4
ESE
8
0.5
ESE
9
0.5
E
9
0.5
ESE
9
0.5
ESE
9
1.2
NNW
7
1.1
N
7
1
N
7
0.9
N
7
0.8
N
7
0.8
N
7
0.7
N
7
0.6
N
7
0.6
ESE
10
0.6
ESE
10
0.6
ESE
10
Energy kJ
18
20
29
20
33
24
9
43
28
46
42
48
48
139
113
92
77
60
58
44
32
72
75
75
Swell 2
Height (m)
Direction
Period (s)
0.2
N
8
0.3
N
7
0.2
ENE
8
0.5
SE
6
0.7
WSW
7
0.6
WSW
7
0.4
WSW
6
0.4
S
5
0.3
S
5
0.2
S
5
0.2
S
5
0.2
S
5
0.1
SW
6
0.5
ESE
9
0.5
ESE
9
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.6
ESE
10
0.6
ESE
9
0.6
ESE
9
0.5
N
6
0.5
N
6
0.4
NNW
6
Energy kJ
4
9
6
17
38
29
16
9
5
2
2
2
1
48
49
51
51
51
71
69
69
22
21
13
Swell 3
Height (m)
Direction
Period (s)
0.2
ENE
8
0.2
ENE
8
0.2
E
10
0.2
E
10
0.5
NNW
7
0.4
NW
8
0.4
ESE
8
0.3
SW
6
0.3
SW
6
0.2
WSW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
NE
8
0.2
WNW
5
0.1
NE
9
0.1
NE
4
0.1
NE
8
0.1
NE
8
0.1
NE
8
0.1
E
8
Energy kJ
6
6
8
7
28
25
28
6
5
4
2
2
1
1
3
3
3
1
3
3
3
1
Wind waves
Height (m)
Direction
Period (s)
1
S
5
1.3
SSW
5
1.3
SSW
5
1.1
W
7
0.8
NW
5
1
NW
7
1.2
NW
7
1.2
NW
7
1.4
NW
7
1.4
NW
7
1.5
NNW
7
1.4
NNW
7
1.4
NNW
7
1
N
7
0.9
N
7
0.4
NE
4
0.4
NE
4
0.4
NE
5
0.3
ENE
4
0.3
ESE
3
0.4
SE
3
0.4
SE
3
0.6
SSE
4
0.8
SSE
4
Energy kJ
42
75
99
111
30
88
135
143
200
194
198
176
168
94
74
5
4
5
3
1
2
3
8
16
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
1385
951
621
75
94
75
75
75
639
651
984
761
627
40
40
12
12
12
627
683
683
605
605
605
Best forecast wave conditions in Okinawa
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
1
2
2
2
3
3
4
4
4
5
4
2
1
1
1
1
1
2
2
3
1
1
1
Header Global
Rating
(10 max)
6
6
5
5
5
5
5
6
6
6
7
7
5
5
5
5
5
9
7
5
6
4
4
4
  • 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

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