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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 am 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 1.7°C warmer than normal for this time of year)How big are the waves at Niyodo Rivermouth today (01 Jun):
- Morning surf: Morning surf (01 Jun, local time) - 6ft (1.8m), 14s period with S swell.
- Afternoon surf: Afternoon surf (01 Jun, local time) - 7ft (2.1m), 14s period with S swell.
- 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 2PM is: 2.1m 14s primary swell from a South direction and 0.5m 10s secondary swell from a East direction, 0.5m 5s secondary swell from a East direction (forecast issued at 08:00am June 01). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Jun) | 6ft (1.8m) | 14s |
| Afternoon (01 Jun) | 7ft (2.1m) | 14s |
| 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 144mm), heaviest during Tue night. Warm (max 26°C on Wed morning, min 19°C on Mon night). Winds increasing (calm on Mon night, strong winds from the ENE by Tue night). | ||||||||||||||||||||||||
Monday 1 | Tuesday 2 | Wednesday 3 | Thu 4 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 14 | S 14 | S 13 | S 14 | S 14 | S 14 | S 14 | S 14 | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 15 | S 15 | S 14 | S 13 | SSW 12 | SE 10 | SE 10 | SSW 10 | SSW 9 | S 8 | |
482 | 1196 | 976 | 1608 | 2019 | 2187 | 2313 | 2304 | 1630 | 1511 | 1628 | 2035 | 2831 | 4279 | 8263 | 14888 | 10429 | 4457 | 1361 | 986 | 557 | 205 | 173 | 241 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | on | on | cross-on | glassy | cross-off | cross-off | cross | cross | cross-on | cross | cross | cross-off | cross-off | off | off | cross-off | off | off | off | cross-off | off | off | |
High Tide | 5:34AM1.69m | 7:15PM1.68m | 6:07AM1.69m | 7:51PM1.65m | 6:40AM1.68m | 8:29PM1.61m | ||||||||||||||||||
Low Tide | 12:24PM0.17m | 00:38AM0.97m | 12:59PM0.19m | 1:11AM0.98m | 1:35PM0.23m | 1:46AM1.00m | ||||||||||||||||||
 |  | |  | |  |  |  |  | | |  | |  | |  | | | | | |  |  | | |
 | 4:56 | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:54 | — | — | — | — | — | — | — | 4:54 |
 | — | — | — | — | 7:08 | — | — | — | — | — | — | — | 7:09 | — | — | — | — | — | — | — | 7:09 | — | — | 7:10 |
— | — | — | — | — | — | 2 | 6 | 6 | 9 | 9 | 11 | 30 | 31 | 34 | 6 | — | — | — | — | — | — | — | — | |
Temp °C | 21 | 23 | 24 | 22 | 22 | 21 | 19 | 20 | 21 | 21 | 22 | 22 | 22 | 22 | 21 | 23 | 23 | 24 | 26 | 25 | 24 | 20 | 19 | 19 |
24 | 25 | 24 | 23 | 24 | 23 | 20 | 22 | 23 | 22 | 22 | 22 | 20 | 17 | 18 | 20 | 20 | 24 | 27 | 24 | 24 | 20 | 18 | 18 | |
Swell 1 Height (m) Direction Period (s) | SSE 7 | S 14 | S 13 | S 14 | S 14 | S 14 | S 14 | S 14 | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 15 | S 15 | S 14 | S 13 | SSW 12 | SE 10 | SE 10 | SSW 10 | SSW 9 | S 8 |
 kJ | 116 | 1196 | 976 | 1608 | 2019 | 2187 | 2313 | 2304 | 1630 | 1511 | 1628 | 2035 | 2831 | 4279 | 8263 | 14888 | 10429 | 4457 | 1361 | 986 | 557 | 205 | 173 | 241 |
Swell 2 Height (m) Direction Period (s) | S 14 | SSE 6 | SSW 16 | E 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SE 12 | — | — | — | — | — | — | ESE 11 | ESE 11 | ESE 11 | SE 11 | SSW 11 | SSW 10 | SSE 9 | SSE 9 | E 10 |
| kJ | 482 | 37 | 540 | 53 | 59 | 58 | 58 | 58 | 22 | — | — | — | — | — | — | 8050 | 4547 | 3059 | 1067 | 515 | 320 | 203 | 132 | 71 |
Swell 3 Height (m) Direction Period (s) | S 11 | ESE 6 | E 10 | E 10 | — | SE 12 | — | — | — | — | — | — | — | — | — | — | — | E 10 | E 10 | SSE 10 | ESE 10 | ESE 10 | E 10 | SE 11 |
| kJ | 231 | 23 | 54 | 74 | — | 21 | — | — | — | — | — | — | — | — | — | — | — | 980 | 643 | 436 | 250 | 150 | 96 | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | E 5 | SE 5 | — | — | — | ESE 5 | SE 6 | SE 7 | ESE 7 | ESE 8 | ESE 9 | ESE 10 | ENE 10 | NNW 5 | NW 5 | W 4 | — | — | N 3 | NNW 3 | N 3 |
| kJ | — | — | — | 13 | 21 | — | — | — | 110 | 239 | 559 | 860 | 1953 | 3952 | 7611 | 3163 | 63 | 49 | 10 | — | — | 2 | 9 | 6 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 82 | 29 | 29 | 0 | 0 | 0 | 29 | 380 | 380 | 432 | 499 | 535 | 645 | 243 | 224 | 9 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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