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Monabe Rivermouth surfForecast / Shikoku / Japan
12 Day Weather and Surf, issued 2 am Thursday 03 Jul 2025 JST
Best Forecast Surf Conditions for Monabe Rivermouth this week:
The surf forecast for Monabe Rivermouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jul 03) at 6PM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.6m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Monabe Rivermouth in the next 12 days are 1.3m 10s and forecast to arrive on Saturday (Jul 05) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 10s period and expected on Tuesday (Jul 08) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 3rd Jul) | 3ft (0.9m) 10s |
| Best Surf | 6PM (Thu 3rd Jul) | 3ft (0.9m) 10s |
| Most Powerful | 12PM (Sat 5th Jul) | 4.5ft (1.3m) 10s |
Table - best surf conditions forecast for Monabe Rivermouth over the next 12 days.
Thursday 03 | Friday 04 | Saturday 05 | Sunday 06 | Monday 07 | Tuesday 08 | Wednesday 09 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 12 | 11 | 5 | 6 | 7 | 6 | 11 | 10 | 9 | 14 | 13 | 12 | 11 | 10 | 11 | 11 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 156 | 143 | 141 | 122 | 183 | 292 | 346 | 288 | 236 | 135 | 171 | 221 | 215 | 210 | 209 | 247 | 252 | 173 | 136 | 122 | 49 | 156 | 253 | 181 | 194 | 281 | 198 | 361 | 616 | 671 | 505 | 442 | 653 | 487 | 325 | 254 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | cross- off | cross- on | on | off | glass | on | glass | glass | on | off | glass | cross- on | glass | glass | on | cross- off | glass | glass | cross- off | cross | cross | cross | cross- on | cross- on | cross- off | glass | on | off | cross | on | off | cross- off | off | off |
High Tide / height (m) | 11:42AM 1.30 | 11:54PM 1.50 | 1:17PM 1.26 | 12:40AM 1.48 | 2:53PM 1.31 | 1:32AM 1.48 | 4:04PM 1.39 | 2:26AM 1.50 | 4:54PM 1.49 | 3:18AM 1.54 | 5:34PM 1.57 | 4:06AM 1.60 | 6:10PM 1.64 | 4:49AM 1.66 | 6:43PM 1.69 | 5:30AM 1.72 | 7:16PM 1.73 | 6:10AM 1.76 | 7:48PM 1.75 | 6:50AM 1.78 | 8:20PM 1.76 | 7:32AM 1.76 | 8:52PM 1.75 | |||||||||||||
Low Tide / height (m) | 5:23PM 0.87 | 6:51AM 0.74 | 6:22PM 1.00 | 7:56AM 0.65 | 7:40PM 1.09 | 8:54AM 0.55 | 8:59PM 1.12 | 9:44AM 0.44 | 10:01PM 1.11 | 10:28AM 0.34 | 10:49PM 1.08 | 11:09AM 0.24 | 11:28PM 1.03 | 11:47AM 0.16 | 12:05AM 0.99 | 12:24PM 0.10 | 12:40AM 0.94 | 1:00PM 0.08 | 1:17AM 0.89 | 1:36PM 0.10 | 1:55AM 0.84 | 2:12PM 0.17 | 2:35AM 0.78 | |||||||||||||
Thursday 03 | Friday 04 | Saturday 05 | Sunday 06 | Monday 07 | Tuesday 08 | Wednesday 09 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||||||||||||
| Sunrise | 4:58 | - | - | 4:58 | - | - | 4:58 | - | - | 5:00 | - | - | 5:00 | - | - | 5:01 | - | - | 5:01 | - | - | 5:01 | - | - | 5:01 | - | - | 5:03 | - | - | 5:03 | - | - | 5:03 | - | - |
| Sunset | - | 7:17 | - | - | 7:17 | - | - | 7:17 | - | - | 7:17 | - | - | 7:17 | - | - | 7:17 | - | - | 7:16 | - | - | 7:16 | - | - | 7:16 | - | - | 7:16 | - | - | 7:15 | - | - | 7:15 | - |
 |  |  | |  | | | | | | |  | | | | | | |  |  |  |  | |  | | | | | | | | | | |  |  | |
Rain (mm) | - | 2 | - | - | - | - | - | - | - | - | - | - | - | 2 | - | - | - | - | - | 1 | 4 | 1 | 3 | 4 | - | - | - | - | - | - | - | - | - | - | 15 | 99 |
| Temp. °C | 29 | 28 | 26 | 29 | 29 | 26 | 30 | 30 | 27 | 30 | 30 | 27 | 30 | 30 | 27 | 29 | 28 | 25 | 27 | 28 | 26 | 28 | 28 | 26 | 30 | 30 | 27 | 29 | 29 | 26 | 30 | 30 | 27 | 32 | 26 | 27 |
| Feels °C (?) | 32 | 32 | 31 | 33 | 34 | 31 | 33 | 34 | 31 | 32 | 34 | 31 | 34 | 34 | 32 | 32 | 30 | 28 | 31 | 32 | 29 | 29 | 30 | 29 | 32 | 32 | 31 | 32 | 32 | 31 | 33 | 34 | 32 | 35 | 30 | 28 |
Short Range Forecast: Light rain (total 2mm), mostly falling on Thu afternoon. Warm (max 30°C on Sat morning, min 25°C on Thu night). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Mon afternoon. Warm (max 30°C on Sun morning, min 24°C on Tue night). Wind will be generally light. | Days 6-9 Weather Summary Moderate rain (total 13mm), heaviest on Wed night. Warm (max 30°C on Fri morning, min 25°C on Wed night). Wind will be generally light. | Long Range Forecast: Heavy rain (total 132mm), heaviest during Mon night. Warm (max 32°C on Mon morning, min 24°C on Mon night). Winds increasing (calm on Sat morning, fresh winds from the ENE by Mon night). | |||||||||||||||||||||||||||||||||
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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 Monabe 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 Monabe Rivermouth Surf forecast
The above surf forecast table for Monabe Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Monabe Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Monabe 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 (Monabe 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 Monabe 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.
Monabe Rivermouth is 11 km (7 miles) from the city of Aki. If you plan a holiday in Shikoku, look for hotels and other accommodation in Aki. Aki has rooms for a wide range of budgets as well as car hire and transport links.
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