Aha Rivermouth surfForecast / Okinawa / Japan

information circle48hr Weather and Surf, issued 8 pm Thursday 14 May 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
23.5° C
(Which is 1.6°C colder than average for this time of year)

How big are the waves at Aha Rivermouth today?

The current surf forecast for Aha Rivermouth at 2AM is: 0.8m 9s primary swell from a East direction and 0.6m 9s secondary swell from a East-southeast direction (forecast issued at 08:00pm May 14). An open ocean swell of 0.2m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (15 May)4.5ft (1.3m)9s
Afternoon (15 May)4.5ft (1.3m)6s
Evening (15 May)5ft (1.5m)6s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 23°C on Thu night, min 21°C on Sat night). Mainly fresh winds.

Thu
14
Friday
15
Saturday
16
Sunday
17
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
6 AM
9 AM
12 PM
3 PM
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
Height MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.7
ESE
9
0.7
ESE
9
0.7
E
9
0.8
E
9
0.6
E
9
1.3
E
9
1.3
E
5
1.3
E
6
1.5
E
6
1.5
E
6
1.5
E
6
1.5
E
7
1.6
E
7
1.6
E
7
1.7
E
7
1.8
E
8
1.8
E
8
1.9
E
8
1.9
E
8
1.8
E
8
1.8
E
8
1.8
E
8
1.7
E
8
1.7
E
8
Wave Graph
Metric surfscale
Energy kJ
86
86
87
106
61
282
95
110
146
162
184
208
233
247
290
358
381
424
447
418
428
432
386
377
Wind (km/h)
20
E
20
E
20
ENE
20
E
30
E
30
E
30
E
30
E
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
35
E
30
ENE
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
5:22PM1.74m
5:08AM1.85m
6:07PM1.83m
5:42AM1.93m
6:51PM1.87m
6:18AM1.99m
Low Tide
11:10PM0.61m
11:38AM0.11m
11:50PM0.63m
12:19PM-0.03m
00:30AM0.67m
12:59PM-0.11m
cloud
cloud
cloud
part cloud
cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:39
5:39
5:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:06
7:06
7:07
7:07
Temp °C
23
23
23
22
22
22
22
23
22
22
22
22
22
22
22
22
22
22
22
22
21
22
22
23
22
23
22
21
19
18
18
20
18
18
19
19
19
18
18
18
18
18
18
18
17
18
18
20
Swell 1
Height (m)
Direction
Period (s)
0.7
ESE
9
0.7
ESE
9
0.6
ESE
9
0.6
ESE
9
0.6
E
9
0.3
ENE
11
0.5
E
10
0.5
E
10
0.1
S
6
0.4
ESE
10
0.4
ESE
10
0.4
ESE
10
0.4
ESE
10
0.3
ESE
10
0.2
N
7
0.2
N
7
0.2
N
7
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.2
ESE
14
0.1
SE
14
0.1
SE
13
0.1
SE
13
Energy kJ
86
86
64
68
61
23
46
47
1
34
36
36
34
20
4
4
3
7
7
7
18
7
7
7
Swell 2
Height (m)
Direction
Period (s)
0.5
E
9
0.4
ENE
9
0.2
SSE
7
0.2
SSE
7
0.3
ENE
11
0.2
S
6
0.1
SE
12
0.1
SE
12
0.1
SE
11
0.1
S
6
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
10
0.1
SE
10
0.1
SE
10
0.1
SE
10
0.1
SE
10
Energy kJ
45
29
4
4
23
3
6
5
5
1
5
4
5
5
5
4
4
4
4
4
4
Swell 3
Height (m)
Direction
Period (s)
0.2
SSE
7
0.2
SSE
7
0.1
SE
12
0.2
ENE
11
0.2
SSE
6
0.1
SE
12
0.1
S
6
0.1
S
6
0.1
E
16
0.1
SE
11
0.1
S
6
0.1
SE
15
0.1
SE
15
0.2
N
7
0.1
SE
14
0.1
SE
14
0.1
N
7
Energy kJ
5
5
6
13
4
6
1
1
5
5
1
8
8
4
8
8
1
Wind waves
Height (m)
Direction
Period (s)
0.3
E
3
0.4
E
3
0.7
E
9
0.8
E
9
0.9
E
4
1.3
E
9
1.3
E
5
1.3
E
6
1.5
E
6
1.5
E
6
1.5
E
6
1.5
E
7
1.6
E
7
1.6
E
7
1.7
E
7
1.8
E
8
1.8
E
8
1.9
E
8
1.9
E
8
1.8
E
8
1.8
E
8
1.8
E
8
1.7
E
8
1.7
E
8
Energy kJ
1
3
87
106
28
282
95
110
146
162
184
208
233
247
290
358
381
424
447
418
428
432
386
377
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
1
1
1
1
1
2
1
1
1
2
1
1
2
2
2
1
1
1
1
1
Distance (km)
621
595
595
595
66
70
1004
595
595
595
70
70
70
595
984
955
595
595
595
66
40
68
595
66
Best forecast wave conditions in Okinawa
Rating
(10 max)
1
1
1
1
1
2
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
3
2
2
3
2
1
2
2
2
2
2
2
1
1
2
2
2
2
2
2
2
2
Header Global
Rating
(10 max)
5
5
4
5
5
5
6
5
5
5
5
5
5
5
5
5
4
5
5
6
5
5
5
5
  • 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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