Aha Rivermouth Surf Break

Lat Long: 26.72° N 128.30° E

Aha Rivermouth Surf Forecast and Surf Report

Issued: 2 pm 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Aha Rivermouth sea temperature is
28.5°C
0.1° 

Aha Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Aha Rivermouth surf forecast from 6 Sep 2026:

  • Most powerful swell: Saturday 12 Sep, 12PM (local time) - 6ft (1.9m), 10s period, SE swell with 730 kJ wave energy.

Best Forecast Surf Conditions for Aha Rivermouth this week:

The most powerful waves expected at Aha Rivermouth in the next 16 days are 1.9m 10s and forecast to arrive on Saturday (Sep 12) 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 1.2m 10s period and expected on Saturday (Sep 12) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful12PM (Sat 12th Sep)6ft (1.9m) 10s

Table - best surf conditions forecast for Aha Rivermouth over the next 16 days.


Short Range Forecast

Moderate rain (total 13mm), heaviest on Sun afternoon. Warm (max 27°C on Sun afternoon, min 27°C on Sun afternoon). Winds decreasing (strong winds from the N on Sun afternoon, moderate winds from the NNW by Mon night).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Wed night. Warm (max 28°C on Thu morning, min 27°C on Wed afternoon). Mainly fresh winds.

Sun
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
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
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
Wave
Height (m)
Direction
Period (s)
2.4
N
7
2.2
N
8
2.1
N
8
1.4
NNW
8
1.5
NNW
9
1.6
NNW
9
1.6
NNW
9
1.6
NNW
8
1.5
N
8
1.5
N
8
1.1
N
7
1
N
8
0.9
N
8
1.7
ESE
7
1.7
ESE
8
1.5
ESE
8
1.5
ESE
8
1.8
SE
10
1.8
SE
10
1.3
E
7
Wave Graph
Metric surfscale
Energy kJ
595
638
596
232
329
349
422
287
287
291
127
114
103
302
365
307
247
653
653
144
Wind (km/h)
45
N
30
N
30
NNW
30
NNW
25
NNW
25
NNW
30
NNW
25
N
30
N
25
N
15
NE
20
E
25
E
30
ESE
30
ESE
30
E
30
E
30
E
30
ENE
30
ENE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
4:12PM1.54m
2:30AM1.65m
5:03PM1.68m
4:01AM1.76m
5:38PM1.80m
5:01AM1.91m
6:08PM1.90m
5:49AM2.03m
6:36PM1.98m
6:31AM2.10m
7:02PM2.03m
7:09AM2.12m
7:28PM2.07m
Low Tide
9:01PM1.29m
9:55AM0.51m
10:26PM1.13m
10:54AM0.40m
11:15PM0.94m
11:40AM0.32m
11:55PM0.76m
12:17PM0.29m
00:30AM0.59m
12:51PM0.31m
1:04AM0.46m
1:22PM0.37m
1:36AM0.38m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
clear
part cloud
thunderstorm
part cloud
part cloud
thunderstorm
clear
thunderstorm
clear
clear
clear
clear
clear
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:09
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:42
6:40
6:39
6:38
6:37
6:36
6:35
 mm
5
4
2
1
1
2
1
2
Temp °C
27
27
27
27
27
27
27
27
27
27
27
28
28
28
27
28
28
27
27
27
Feels °C
25
26
27
27
28
28
27
28
27
28
30
30
30
30
28
29
29
28
27
27
  • 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 
submit an eyeball surf report

Quick surf report for Aha Rivermouth:

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 Aha Rivermouth 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 Aha Rivermouth Surf forecast

The above surf forecast table for Aha Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Aha Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Aha Rivermouth 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 (Aha Rivermouth) 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 Aha Rivermouth 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.

Aha Rivermouth is 31 km (19 miles) from the city of Okinawa. If you plan a holiday in Okinawa, look for hotels and other accommodation in Okinawa. Okinawa has rooms for a wide range of budgets as well as car hire and transport links.

Nearest locationNearest