- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 am Wednesday 06 May 2026 JSTForecast update in hr min s Forecast update imminent
Niyodo Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Niyodo Rivermouth sea temperature is
21.3° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Niyodo Rivermouth today?
The current surf forecast for Niyodo Rivermouth at 10AM is: 0.7m 10s primary swell from a East-southeast direction and 0.6m 4s secondary swell from a Southeast direction, 0.6m 4s secondary swell from a East-southeast direction (forecast issued at 02:00am May 06). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 May) | 2.5ft (0.7m) | 10s |
| Afternoon (06 May) | 2.5ft (0.7m) | 10s |
| Evening (06 May) | 2.5ft (0.7m) | 10s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 20°C on Wed morning, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 6 | Thursday 7 | Friday 8 | ||||||||||||||||||||||
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 | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 6 | ESE 6 | ESE 9 | ESE 9 | ESE 9 | SE 8 | SE 7 | ESE 7 | SE 8 | SE 8 | SE 8 | SE 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | |
65 | 63 | 83 | 81 | 81 | 81 | 172 | 80 | 101 | 85 | 75 | 75 | 173 | 164 | 160 | 146 | 182 | 178 | 128 | 104 | 171 | 160 | 138 | 141 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | cross-off | glassy | cross-on | cross-on | off | glassy | off | glassy | cross-off | glassy | glassy | on | glassy | glassy | off | glassy | glassy | glassy | glassy | cross-on | cross-off | off | |
High Tide | 7:21AM1.64m | 9:17PM1.49m | 7:53AM1.57m | 10:12PM1.42m | 8:31AM1.48m | |||||||||||||||||||
Low Tide | 1:49AM1.00m | 2:21PM0.34m | 2:22AM1.06m | 3:03PM0.44m | 3:07AM1.12m | 3:56PM0.53m | ||||||||||||||||||
 | |  | | | | | |  | |  | | |  | |  | | | | | | | | | |
 | — | 5:13 | — | — | — | — | — | — | — | 5:11 | — | — | — | — | — | — | — | 5:11 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 15 | 16 | 15 | 18 | 20 | 19 | 18 | 18 | 17 | 17 | 17 | 19 | 20 | 20 | 19 | 18 | 18 | 18 | 18 | 20 | 20 | 20 | 17 | 14 |
13 | 15 | 14 | 18 | 20 | 19 | 18 | 18 | 17 | 17 | 17 | 20 | 21 | 21 | 21 | 20 | 19 | 20 | 19 | 21 | 21 | 18 | 14 | 11 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 9 | SE 8 | SE 7 | ESE 7 | SE 8 | SE 8 | SE 8 | SE 7 | ESE 10 | ESE 10 | ESE 10 | SSW 6 |
 kJ | 65 | 63 | 83 | 81 | 81 | 81 | 80 | 80 | 79 | 79 | 75 | 55 | 173 | 164 | 160 | 146 | 182 | 178 | 128 | 104 | 171 | 160 | 138 | 56 |
Swell 2 Height (m) Direction Period (s) | S 6 | S 5 | SW 5 | SE 4 | SE 4 | — | — | — | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SSE 8 | — | — | SE 11 | — | — | ESE 10 | ESE 10 | SSE 7 | SSE 7 | SSE 7 | ESE 10 |
| kJ | 2 | 1 | 1 | 12 | 10 | — | — | — | 78 | 50 | 75 | 75 | 50 | — | — | 19 | — | — | 60 | 86 | 36 | 28 | 29 | 141 |
Swell 3 Height (m) Direction Period (s) | W 7 | — | — | — | — | — | — | — | — | — | SE 8 | SSE 8 | SSE 8 | — | — | — | — | — | ESE 10 | ESE 10 | — | — | — | SE 7 |
| kJ | 1 | — | — | — | — | — | — | — | — | — | 2 | 23 | 51 | — | — | — | — | — | 60 | 85 | — | — | — | 14 |
Wind waves Height (m) Direction Period (s) | ESE 3 | ESE 4 | ESE 4 | ESE 4 | — | SE 4 | ESE 10 | ESE 6 | E 6 | E 6 | — | — | — | — | — | — | — | — | — | SW 5 | S 7 | SW 5 | SW 5 | WNW 4 |
| kJ | 2 | 10 | 12 | 12 | — | 9 | 172 | 67 | 101 | 85 | — | — | — | — | — | — | — | — | — | 23 | 68 | 49 | 74 | 9 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 29 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 58 | 51 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 Niyodo 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.
Nearest