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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Thursday 28 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
23.0° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Niyodo Rivermouth today (28 May):
- Evening surf: Evening surf (28 May, local time) - 3ft (0.9m), 6s period with S swell.
The current surf forecast for Niyodo Rivermouth at 11PM is: 0.9m 6s primary swell from a South direction and 0.6m 8s secondary swell from a East direction (forecast issued at 08:00pm May 28). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 May) | - | - |
| Afternoon (28 May) | - | - |
| Evening (28 May) | 3ft (0.9m) | 6s |
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 28°C on Fri morning, min 18°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 28 | Friday 29 | Saturday 30 | Sunday 31 | |||||||||||||||||||||
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 | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
S 7 | S 6 | S 6 | S 6 | S 6 | SW 7 | SSW 7 | SW 7 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 12 | ESE 10 | E 11 | ESE 11 | E 11 | ESE 11 | S 16 | S 14 | S 14 | S 13 | |
72 | 68 | 68 | 66 | 66 | 44 | 39 | 22 | 49 | 49 | 47 | 47 | 48 | 68 | 96 | 82 | 89 | 95 | 88 | 123 | 239 | 405 | 529 | 673 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | glassy | off | cross-off | cross-off | cross-on | cross-on | off | off | off | off | glassy | on | on | glassy | glassy | off | off | off | glassy | on | on | |
High Tide | 4:47PM1.59m | 4:01AM1.64m | 5:27PM1.65m | 4:31AM1.67m | 6:04PM1.68m | 5:02AM1.68m | ||||||||||||||||||
Low Tide | 10:21PM0.89m | 10:44AM0.30m | 10:58PM0.91m | 11:17AM0.23m | 11:33PM0.93m | 11:50AM0.19m | ||||||||||||||||||
 |  |  | |  | | | | | | | | | | |  | | | | | | | | | |
 | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — | — | — | — |
 | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | 7:08 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 25 | 24 | 23 | 23 | 23 | 26 | 28 | 27 | 24 | 22 | 20 | 19 | 18 | 23 | 24 | 24 | 23 | 21 | 20 | 19 | 19 | 24 | 25 | 25 |
30 | 28 | 27 | 26 | 25 | 26 | 28 | 28 | 26 | 23 | 20 | 19 | 17 | 22 | 23 | 24 | 25 | 23 | 21 | 19 | 18 | 25 | 25 | 25 | |
Swell 1 Height (m) Direction Period (s) | S 7 | S 6 | S 6 | S 6 | S 6 | SW 7 | SSW 7 | SW 7 | E 10 | SSE 6 | SSE 6 | E 10 | E 10 | E 10 | E 12 | ESE 10 | E 11 | ESE 11 | E 11 | ESE 11 | ESE 11 | S 14 | S 14 | S 13 |
 kJ | 72 | 68 | 68 | 66 | 66 | 44 | 29 | 21 | 49 | 19 | 19 | 47 | 48 | 68 | 96 | 82 | 89 | 95 | 88 | 123 | 123 | 405 | 529 | 673 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | SSE 6 | SSE 6 | SSE 6 | SW 6 | E 10 | E 10 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 5 | S 5 | SE 7 | SSE 16 | S 16 | ESE 11 | ESE 11 | ESE 11 |
| kJ | 63 | 46 | 45 | 33 | 33 | 21 | 14 | 15 | 10 | 49 | 47 | 13 | 10 | 6 | 6 | 6 | 6 | 2 | 7 | 85 | 239 | 123 | 121 | 90 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 9 | SE 9 | SE 10 | SE 10 | ESE 8 | ESE 10 | E 8 | ESE 12 | SW 6 | ESE 12 | ESE 12 | ENE 5 | ESE 12 | SE 9 | SW 6 | E 3 | SE 9 | S 5 | S 5 | SSE 9 | SSE 9 | SSE 9 | S 16 |
| kJ | 23 | 23 | 22 | 23 | 23 | 22 | 39 | 22 | 15 | 10 | 29 | 28 | 5 | 29 | 3 | 1 | 1 | 3 | 2 | 2 | 8 | 8 | 8 | 133 |
Wind waves Height (m) Direction Period (s) | — | — | — | NW 3 | — | — | — | — | SSE 6 | SE 3 | NE 4 | ENE 5 | — | — | ESE 3 | E 3 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 2 | — | — | — | — | 22 | 2 | 5 | 19 | — | — | 1 | 2 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 55 | 61 | 0 | 0 | 0 | 0 | 0 | 330 | 58 | 0 | 0 | 0 | 0 | 0 | 0 | 103 | 58 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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