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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 2 pm Saturday 30 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
23.1° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Niyodo Rivermouth today (30 May):
- Afternoon surf: Afternoon surf (30 May, local time) - 2ft (0.6m), 10s period with E swell.
- Evening surf: Evening surf (30 May, local time) - 2ft (0.6m), 11s period with E swell.
The current surf forecast for Niyodo Rivermouth at 6PM is: 0.6m 11s primary swell from a East direction and 0.3m 5s secondary swell from a South-southeast direction (forecast issued at 02:00pm May 30). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 May) | - | - |
| Afternoon (30 May) | 2ft (0.6m) | 10s |
| Evening (30 May) | 2ft (0.6m) | 11s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 15mm), heaviest on Tue morning. Warm (max 25°C on Sat afternoon, min 19°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 30 | Sunday 31 | Monday 1 | Tue 2 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
E 12 | E 10 | E 11 | E 11 | E 11 | S 16 | S 14 | S 14 | S 13 | S 12 | S 12 | S 12 | S 12 | S 15 | S 14 | S 14 | S 13 | S 16 | S 15 | S 15 | S 14 | SSW 14 | SSW 14 | S 14 | |
98 | 77 | 89 | 88 | 88 | 124 | 203 | 293 | 398 | 439 | 488 | 411 | 384 | 657 | 399 | 1127 | 1121 | 2732 | 2872 | 2679 | 2643 | 2376 | 2212 | 2291 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | glassy | glassy | off | glassy | glassy | glassy | glassy | on | on | glassy | glassy | glassy | glassy | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | glassy | cross-off | |
High Tide | 6:04PM1.68m | 5:02AM1.68m | 6:40PM1.69m | 5:34AM1.69m | 7:15PM1.68m | 6:07AM1.69m | ||||||||||||||||||
Low Tide | 11:33PM0.93m | 11:50AM0.19m | 00:06AM0.95m | 12:24PM0.17m | 00:38AM0.97m | |||||||||||||||||||
 |  |  |  | | | | | | | |  | |  | | | | | |  | | |  | | |
 | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — | — |
 | — | — | 7:07 | — | — | — | — | — | — | — | 7:08 | — | — | — | — | — | — | — | 7:08 | — | — | — | — | 7:09 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 2 | 2 | 3 | |
Temp °C | 25 | 25 | 24 | 22 | 21 | 21 | 21 | 24 | 24 | 25 | 23 | 21 | 20 | 20 | 19 | 22 | 23 | 23 | 22 | 21 | 19 | 19 | 19 | 19 |
24 | 25 | 26 | 24 | 22 | 22 | 22 | 25 | 25 | 24 | 23 | 23 | 22 | 23 | 21 | 23 | 23 | 23 | 22 | 22 | 20 | 21 | 21 | 21 | |
Swell 1 Height (m) Direction Period (s) | E 12 | E 10 | E 11 | E 11 | E 11 | ESE 11 | S 14 | S 14 | S 13 | S 12 | S 12 | S 12 | SSE 6 | S 15 | S 11 | S 14 | S 13 | S 16 | S 15 | S 15 | S 14 | SSW 14 | SSW 14 | S 14 |
 kJ | 98 | 77 | 89 | 88 | 88 | 105 | 203 | 293 | 398 | 439 | 488 | 411 | 127 | 657 | 289 | 1127 | 1121 | 2732 | 2872 | 2679 | 2643 | 2376 | 2212 | 2291 |
Swell 2 Height (m) Direction Period (s) | SSE 6 | SSE 6 | SSE 5 | SSE 5 | SSE 5 | S 16 | ESE 11 | ESE 11 | ESE 11 | E 11 | E 11 | S 16 | S 12 | SSE 6 | SSE 6 | SSW 18 | SSW 16 | E 10 | E 10 | E 10 | E 10 | E 10 | ESE 10 | SE 12 |
| kJ | 6 | 6 | 6 | 5 | 5 | 124 | 135 | 135 | 103 | 85 | 85 | 181 | 384 | 114 | 80 | 540 | 976 | 53 | 50 | 50 | 49 | 30 | 58 | 23 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 7 | SE 9 | SE 7 | S 16 | SE 9 | SSE 9 | SSE 9 | SSE 9 | SE 9 | SE 12 | E 11 | S 15 | SSE 11 | S 14 | SSE 6 | E 10 | SE 11 | SE 11 | SE 11 | SE 12 | SE 11 | — | — |
| kJ | 3 | 2 | 3 | 7 | 20 | 3 | 15 | 8 | 8 | 3 | 22 | 85 | 381 | 194 | 399 | 65 | 54 | 19 | 19 | 20 | 22 | 20 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | S 3 | SSE 5 | — | — | — | — | — | — | SE 6 | — | — | — | — | ESE 10 |
| kJ | — | — | — | — | — | — | — | — | — | — | 8 | 72 | — | — | — | — | — | — | 32 | — | — | — | — | 31 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 330 | 58 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 51 | 55 | 0 | 0 | 0 | 0 | 82 | 58 | 58 | 29 | 29 | 29 | 29 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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