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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 pm Tuesday 05 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 7PM is: 0.5m 10s primary swell from a East-southeast direction and 0.3m 6s secondary swell from a South direction (forecast issued at 02:00pm May 05). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 May) | - | - |
| Afternoon (05 May) | 1.5ft (0.5m) | 10s |
| Evening (05 May) | 2ft (0.6m) | 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 21°C on Thu morning, min 15°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tue 5 | Wednesday 6 | Thursday 7 | Fri 8 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 6 | E 6 | ESE 9 | SE 7 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | |
41 | 58 | 57 | 65 | 65 | 83 | 83 | 81 | 81 | 80 | 103 | 80 | 86 | 86 | 76 | 119 | 146 | 203 | 198 | 198 | 193 | 125 | 133 | 108 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | glassy | glassy | off | glassy | glassy | glassy | glassy | on | glassy | off | off | off | glassy | on | on | on | glassy | cross-off | glassy | glassy | glassy | glassy | |
High Tide | 8:33PM1.57m | 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 | |||||||||||||||||||
 |  | |  |  | |  | | | | | | |  | | | | | | | | | | | |
 | — | — | — | — | — | 5:13 | — | — | — | — | — | — | — | 5:11 | — | — | — | — | — | — | — | 5:11 | — | — |
 | — | — | 6:50 | — | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | 6:52 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 18 | 17 | 15 | 15 | 16 | 16 | 18 | 19 | 19 | 17 | 16 | 16 | 16 | 16 | 20 | 21 | 21 | 20 | 19 | 18 | 18 | 18 | 20 |
15 | 16 | 16 | 14 | 13 | 15 | 15 | 17 | 18 | 18 | 18 | 15 | 15 | 15 | 16 | 20 | 21 | 21 | 22 | 20 | 19 | 19 | 20 | 22 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SE 5 | ESE 6 | ESE 6 | ESE 6 | SE 7 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
 kJ | 41 | 58 | 57 | 65 | 65 | 83 | 83 | 81 | 81 | 80 | 103 | 27 | 51 | 60 | 57 | 119 | 146 | 203 | 198 | 198 | 193 | 125 | 133 | 108 |
Swell 2 Height (m) Direction Period (s) | SSE 6 | S 6 | S 6 | S 6 | S 6 | S 5 | W 7 | S 5 | — | — | — | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SE 8 | — | — | ESE 11 | S 6 | S 7 | S 7 | S 7 |
| kJ | 8 | 6 | 6 | 2 | 2 | 1 | 1 | 1 | — | — | — | 80 | 78 | 76 | 76 | 75 | 82 | — | — | 12 | 13 | 24 | 22 | 45 |
Swell 3 Height (m) Direction Period (s) | SSW 6 | — | E 3 | — | W 7 | — | — | — | — | — | — | — | — | SSE 8 | SSE 8 | — | — | — | — | — | — | ESE 11 | SE 11 | ESE 11 |
| kJ | 4 | — | 1 | — | 1 | — | — | — | — | — | — | — | — | 6 | 32 | — | — | — | — | — | — | 46 | 31 | 47 |
Wind waves Height (m) Direction Period (s) | ENE 3 | NE 4 | — | — | ESE 3 | ESE 4 | SE 4 | ESE 4 | SE 5 | SE 5 | SE 5 | E 6 | ESE 6 | E 6 | E 6 | — | — | — | — | — | — | — | — | SSW 6 |
| kJ | 1 | 3 | — | — | 1 | 10 | 14 | 12 | 17 | 29 | 29 | 18 | 86 | 86 | 75 | — | — | — | — | — | — | — | — | 50 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 85 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 29 | 0 | 0 | 0 | 0 | 0 | 51 | 51 | 58 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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