Europe’s Wet, Winter Wave Wrap Up
Precipitation in Portugal, rain in Spain, barrels in Britain and some magical moments in Mully, the Med, Morocco and Mundaka.
- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Monabe Rivermouth surfForecast / Shikoku / Japan
12 Day Weather and Surf, issued 2 am Saturday 21 Feb 2026 JSTForecast update in hr min s Forecast update imminent
Monabe Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Monabe Rivermouth sea temperature is
16.9° C
(Which is normal for this time of year)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 Sunday (Feb 22) at 6PM. The primary swell is predicted to be 1.8m and 6s period with a secondary swell of 0.2m and 8s. Another secondary swell of 0.2m and 12s is also forecast. 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 3.0m 8s and forecast to arrive on Saturday (Feb 28) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 7s period and expected on Monday (Feb 23) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sun 22nd Feb) | 6ft (1.8m) 6s |
| Best Surf | 12AM (Sat 28th Feb) | 10ft (3.0m) 8s |
| Most Powerful | 3AM (Sat 28th Feb) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Monabe Rivermouth over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Some drizzle, heaviest during Sun afternoon. Very mild (max 16°C on Mon morning, min 10°C on Sat night). Wind will be generally light. | Days 3-6 Weather Summary Heavy rain (total 38mm), heaviest during Wed morning. Very mild (max 16°C on Tue night, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||
| 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) (?) | 12 | 12 | 12 | 12 | 5 | 12 | 6 | 5 | 5 | 9 | 9 | 5 | 7 | 8 | 8 | 9 | 9 | 9 | 10 | 10 | 8 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 25 | 25 | 11 | 12 | 78 | 11 | 21 | 11 | 5 | 17 | 17 | 82 | 258 | 216 | 419 | 553 | 616 | 364 | 348 | 553 | 1207 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | off | glass | glass | glass | off | on | cross- off | glass | glass | on | cross- on | off | off | glass | cross- on | cross- off | cross- off | cross- on | cross- off |
High Tide / height (m) | 8:30PM 1.75 | 8:37AM 1.81 | 9:18PM 1.61 | 9:05AM 1.74 | 10:19PM 1.45 | 9:38AM 1.65 | 11:59PM 1.32 | 10:23AM 1.55 | 2:57AM 1.35 | 11:56AM 1.45 | 4:19AM 1.49 | 2:10PM 1.47 | |||||||||
Low Tide / height (m) | 2:21PM 0.39 | 2:29AM 0.52 | 3:01PM 0.38 | 3:01AM 0.72 | 3:49PM 0.41 | 3:36AM 0.93 | 4:53PM 0.48 | 4:22AM 1.13 | 6:29PM 0.52 | 6:38AM 1.28 | 8:22PM 0.45 | 9:24AM 1.22 | 9:40PM 0.32 | ||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||
| Sunrise | 6:43 | - | - | 6:41 | - | - | 6:41 | - | - | 6:39 | - | - | 6:39 | - | - | 6:37 | - | - | 6:35 | - | - |
| Sunset | - | 5:52 | - | - | 5:53 | - | - | 5:54 | - | - | 5:55 | - | - | 5:57 | - | - | 5:58 | - | - | 5:59 | - |
 | |  |  |  |  | | | |  | |  |  | |  | | |  | | | | |
Rain (mm) | - | - | - | - | 1 | - | - | - | - | - | 1 | 18 | 18 | - | - | - | - | 1 | 12 | 20 | 26 |
| Temp. °C | 13 | 14 | 10 | 15 | 14 | 14 | 16 | 16 | 12 | 15 | 15 | 16 | 15 | 14 | 12 | 15 | 15 | 14 | 14 | 15 | 16 |
| Feels °C (?) | 10 | 11 | 7 | 14 | 13 | 15 | 15 | 14 | 11 | 14 | 16 | 16 | 12 | 12 | 9 | 13 | 14 | 13 | 10 | 11 | 13 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal
Surf road trips just got even better. Surf-Forecast users can now save up to 20% on SIXT rental cars worldwide during the promotional period until March 31, 2026. Whether you’re planning a legendary California road trip, chasing waves along Europe’s coasts, or exploring remote surf destinations, this exclusive SIXT offer helps you travel smarter and cheaper. And if you want some inspiration on where to go, check out our article Five Iconic Surf Road Trips. Click and get your SIXT discount
Using Surf-Forecast’s Historical Surf Data To Find The Cleanest Waves On Earth
Our historical stats breakdown what waves are offshore almost all the time.
The World’s Most Inconsistent Waves
Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean
Read more
Discover more articles and updates in the Greenroom.
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.
Nearest