Surf Forecasts:
Aha Rivermouth surf forecast from 3 Jul 2026:
- Best quality surf: Wednesday 8 Jul, 9AM (local time) - 10ft (3.0m), 18s period, ESE swell with onshore winds.
- Most powerful swell: Friday 10 Jul, 12PM (local time) - 23ft (7.0m), 18s period, SE swell with 29,118 kJ wave energy.
- Next surfable swell (1★+): Monday 6 Jul, 3AM (local time) - 0.5ft (0.2m), 19s period with E swell.
Best Forecast Surf Conditions for Aha Rivermouth this week:
The surf forecast for Aha Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jul 06) at 3AM. The primary swell is predicted to be 0.2m and 19s period with a secondary swell of 0.4m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Aha Rivermouth in the next 16 days are 7.0m 18s and forecast to arrive on Friday (Jul 10) 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 8.5m 17s period and expected on Friday (Jul 10) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 6th Jul) | 0.5ft (0.2m) 19s |
| Best Surf | 9AM (Wed 8th Jul) | 10ft (3.0m) 18s |
| Most Powerful | 12PM (Fri 10th Jul) | 23ft (7.0m) 18s |
Table - best surf conditions forecast for Aha Rivermouth over the next 16 days.
Updates in hr min s Forecast update imminent
G'day, I'm Rusty. Let's have a look at what's on the cards for Aha Rivermouth over the next couple of weeks.
Alright, first things first – the next few days are gonna be pretty quiet. We've got a bit of a wait on our hands for anything half-decent. From now until early next week, the surf is tiny and the conditions are pretty ordinary. It's not looking like a total write-off, but you won't be rushing down.
Now, the standout window arrives on the morning of Tuesday, July 7th. That's the real highlight. We're looking at chest to head high waves, around 3 ft coming from the ESE. The wind drops out completely – glassy conditions, absolutely perfect. The combined swell energy is pumping at a solid 469 (moderate energy), and with a long 13-second period from the ESE, the shape should be really fun. Be warned though, this is a beach/jetty setup, and with an optimum swell from the NE, this ESE swell might not be absolutely perfect for the break, but the clean conditions will make up for it. Crowds are sometimes an issue here, so get in early.
Tuesday afternoon the swell bumps up to 4 ft from the ESE with a very long 17-second period (combined energy 958), but the wind swings onshore from the NE, so it'll get a bit lumpy. The morning is definitely the pick.
Wednesday the 8th gets big – 10 ft of ESE swell with an 18-second period (combined energy a massive 5120). That's expert-only territory, and the onshore wind from the NNE will make it a messy, dangerous beast. Thursday and Friday see even bigger, stormy surf – definitely not for paddling. We're talking 15 ft to 23 ft of swell, strong winds, and risk of thunderstorms. This setup with a beach/jetty break and that much wind and size – it looks more interesting for kite surfing than paddle surfing.
After that big pulse, things drop right off again. From the 12th of July through to the 19th, it's back to tiny surf, mostly under 1 ft, with persistent cross-onshore or onshore winds from the east. Not much to write home about.
So, in short: if you can get out on the morning of Tuesday the 7th for that glassy, clean head-high swell, that's your best bet. The rest of the period is either too small, too blown out, or too big.
Stay frothy,
Rusty
Short Range ForecastMostly dry. Warm (max 29°C on Sun afternoon, min 26°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Thu afternoon. Warm (max 29°C on Thu night, min 26°C on Tue night). Winds increasing (calm on Tue morning, strong winds from the E by Thu night). | ||||||||||||||||||||
Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | E 9 | E 9 | E 9 | ESE 9 | ESE 9 | ESE 9 | ESE 16 | E 16 | ESE 14 | ESE 13 | ESE 17 | ESE 18 | ESE 18 | ESE 18 | ESE 18 | ESE 18 | SE 18 | SE 18 | SE 18 | SSE 17 | S 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 39 | 38 | 39 | 26 | 26 | 25 | 53 | 122 | 201 | 289 | 673 | 2791 | 5120 | 6134 | 8989 | 11679 | 14075 | 20432 | 28909 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | off | off | off | off | glassy | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross |
High Tide | 9:51PM1.79m | 9:20AM1.79m | 10:26PM1.78m | 10:11AM1.70m | 11:06PM1.76m | 11:15AM1.59m | 11:52PM1.74m | 12:38PM1.50m | 00:47AM1.73m | 2:24PM1.47m | 1:52AM1.75m | 4:01PM1.54m | |||||||||
Low Tide | 3:16PM0.35m | 3:36AM0.90m | 3:54PM0.46m | 4:24AM0.86m | 4:36PM0.60m | 5:22AM0.82m | 5:25PM0.76m | 6:31AM0.76m | 6:25PM0.92m | 7:49AM0.67m | 7:40PM1.05m | 9:07AM0.54m | 9:04PM1.12m | ||||||||
 | |  | | | | | | | | | | | |  |  |  |  | | | | |
 | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:39 | — | — |
 | — | 7:23 | — | — | 7:23 | — | — | 7:23 | — | — | 7:23 | — | — | 7:23 | — | — | 7:22 | — | — | 7:22 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 2 | 2 | 3 |
Temp °C | 28 | 28 | 27 | 28 | 29 | 27 | 28 | 28 | 27 | 27 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 29 | 28 | 28 | 29 |
Feels °C | 31 | 31 | 31 | 31 | 33 | 31 | 32 | 32 | 32 | 32 | 31 | 30 | 30 | 28 | 27 | 28 | 28 | 29 | 25 | 24 | 27 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | ESE 9 | W 6 | W 6 | W 6 | E 16 | ESE 14 | ESE 13 | ESE 17 | ESE 18 | ESE 18 | ESE 18 | ESE 18 | ESE 18 | SE 18 | SE 18 | SE 18 | SSE 17 | S 16 |
| kJ | 39 | 38 | 39 | 26 | 12 | 18 | 18 | 122 | 201 | 289 | 673 | 2791 | 5120 | 6134 | 8989 | 11679 | 14075 | 20432 | 28909 | 43015 | 36225 |
Swell 2 Height (m) Direction Period (s) | S 7 | S 7 | W 5 | W 6 | ESE 9 | ESE 9 | ESE 8 | W 7 | W 6 | ESE 18 | ESE 13 | WSW 8 | — | — | — | — | — | — | — | — | — |
| kJ | 10 | 4 | 7 | 11 | 26 | 25 | 24 | 14 | 12 | 180 | 285 | 13 | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SE 8 | SE 9 | S 7 | S 7 | S 7 | SE 9 | ESE 16 | ESE 8 | E 9 | W 6 | W 6 | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 3 | 4 | 4 | 4 | 3 | 53 | 24 | 23 | 11 | 7 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 2 | WSW 3 | — | — | WSW 6 | — | — | — | — | — | — | — | — | — | NE 6 | NE 8 | — | — | — | SE 17 | SSE 16 |
| kJ | 1 | 3 | — | — | 8 | — | — | — | — | — | — | — | — | — | 97 | 24 | — | — | — | 28337 | 22626 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 17 | 623 | 605 | 681 | 681 | 0 | 0 | 0 | 0 | 17 | 68 | 685 | 595 | 68 | 595 | 595 | 673 | 693 | 693 | 693 |
Best forecast wave conditions in Okinawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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.
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