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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Monday 01 Jun 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
23.7° C
(Which is 1.6°C warmer than normal for this time of year)How big are the waves at Niyodo Rivermouth today (01 Jun):
- Evening surf: Evening surf (01 Jun, local time) - 7.5ft (2.3m), 14s period with S swell.
The current surf forecast for Niyodo Rivermouth at 11PM is: 2.3m 14s primary swell from a South direction and 0.5m 10s secondary swell from a East-southeast direction (forecast issued at 08:00pm June 01). The wind direction is predicted to be glassy and the swell rating is 4.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Jun) | - | - |
| Afternoon (01 Jun) | - | - |
| Evening (01 Jun) | 7.5ft (2.3m) | 14s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 136mm), heaviest during Tue night. Warm (max 26°C on Wed afternoon, min 19°C on Mon night). Winds decreasing (strong winds from the E on Tue night, calm by Thu morning). | ||||||||||||||||||||||||
Mon 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | |||||||||||||||||||||
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 14 | S 14 | S 14 | S 14 | S 13 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | ESE 9 | SSW 15 | S 14 | SSW 13 | SSW 13 | SSW 11 | SSW 11 | SE 9 | S 9 | SSW 9 | S 8 | S 8 | S 8 | S 8 | S 7 | |
1868 | 2216 | 2155 | 2006 | 1838 | 1605 | 2221 | 2234 | 2791 | 4741 | 13128 | 13973 | 7101 | 3642 | 1249 | 575 | 367 | 417 | 184 | 199 | 156 | 122 | 92 | 69 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | glassy | glassy | cross-off | cross-off | cross-on | cross-on | cross | cross | cross | cross-off | off | off | cross-off | off | cross-off | cross-off | off | off | off | off | glassy | cross-on | glassy | |
High Tide | 7:15PM1.68m | 6:07AM1.69m | 7:51PM1.65m | 6:40AM1.68m | 8:29PM1.61m | 7:15AM1.64m | ||||||||||||||||||
Low Tide | 00:38AM0.97m | 12:59PM0.19m | 1:11AM0.98m | 1:35PM0.23m | 1:46AM1.00m | 2:12PM0.29m | ||||||||||||||||||
 |  | |  |  |  | | | |  | |  |  | | |  | |  |  | |  | | | | |
 | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:54 | — | — | — | — | — | — | — | 4:54 | — | — | — | — |
 | 7:08 | — | — | — | — | — | — | — | 7:09 | — | — | — | — | — | — | — | 7:09 | — | — | — | — | — | — | 7:10 |
— | — | — | 4 | 4 | 13 | 12 | 19 | 25 | 22 | 29 | 6 | 1 | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 20 | 20 | 19 | 21 | 22 | 22 | 22 | 23 | 23 | 22 | 22 | 22 | 23 | 25 | 25 | 26 | 21 | 19 | 19 | 20 | 23 | 23 | 23 |
24 | 22 | 22 | 20 | 23 | 23 | 21 | 22 | 20 | 19 | 19 | 16 | 19 | 23 | 25 | 25 | 27 | 21 | 18 | 18 | 20 | 24 | 24 | 25 | |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 14 | S 14 | S 13 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | S 14 | SSW 13 | SSW 13 | SSW 11 | SSW 11 | SE 9 | S 9 | SSW 9 | S 8 | S 8 | S 8 | S 8 | S 7 |
 kJ | 1868 | 2216 | 2155 | 2006 | 1838 | 1605 | 2221 | 2234 | 2791 | 4518 | 13128 | 13973 | 7101 | 3642 | 1249 | 575 | 367 | 417 | 184 | 199 | 156 | 122 | 92 | 69 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | — | — | — | — | — | SSE 11 | ESE 11 | ESE 11 | SE 10 | SE 10 | SE 10 | SSW 10 | E 10 | SSE 8 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 |
| kJ | 59 | 58 | 58 | 58 | 32 | — | — | — | — | — | 821 | 4695 | 2537 | 1446 | 769 | 450 | 325 | 70 | 108 | 31 | 31 | 30 | 29 | 29 |
Swell 3 Height (m) Direction Period (s) | — | SE 12 | — | SE 12 | SE 12 | — | — | — | — | — | — | — | — | NE 7 | NE 7 | E 10 | SE 15 | SE 15 | E 10 | ESE 12 | SE 11 | SE 11 | SE 11 | SE 11 |
| kJ | — | 21 | — | 22 | 22 | — | — | — | — | — | — | — | — | 86 | 8 | 125 | 8 | 8 | 49 | 14 | 20 | 20 | 19 | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | E 10 | SE 6 | SE 6 | ESE 7 | ESE 8 | ESE 9 | ESE 10 | — | NNW 5 | WNW 4 | WNW 4 | NW 5 | NW 4 | NW 2 | NNW 3 | NNW 3 | — | — | — | — |
| kJ | — | — | — | — | 30 | 133 | 287 | 745 | 1816 | 4741 | 8225 | — | 97 | 35 | 24 | 17 | 3 | 2 | 1 | 1 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 29 | 0 | 0 | 0 | 0 | 380 | 432 | 432 | 645 | 535 | 539 | 224 | 224 | 63 | 0 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 55 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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