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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 pm Friday 22 May 2026 JSTForecast update in hr min s Forecast update imminent
Amatu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Amatu sea temperature is
21.5° C
(Which is slightly warmer than usual)How big are the waves at Amatu today?
The current surf forecast for Amatu at 3AM is: 2.4m 9s primary swell from a East-northeast direction and 0.4m 8s secondary swell from a Southwest direction (forecast issued at 08:00pm May 22). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 May) | 7.5ft (2.3m) | 9s |
| Afternoon (23 May) | 7ft (2.1m) | 9s |
| Evening (23 May) | 7ft (2.1m) | 9s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Sun morning. Warm (max 22°C on Mon morning, min 14°C on Fri night). Winds decreasing (fresh winds from the NNE on Fri night, light winds from the E by Sun night). | ||||||||||||||||||||||||
Fri 22 | Saturday 23 | Sunday 24 | Monday 25 | |||||||||||||||||||||
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 |   |    |    |    | ||||||||||||||||||||
NE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 11 | ENE 11 | |
1147 | 1198 | 1093 | 969 | 958 | 929 | 831 | 721 | 641 | 775 | 513 | 522 | 414 | 414 | 361 | 302 | 248 | 248 | 216 | 225 | 250 | 265 | 286 | 292 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | |
High Tide | 10:17PM1.20m | 8:25AM1.17m | 11:09PM1.19m | 10:06AM1.06m | 11:57PM1.21m | 12:05PM1.03m | ||||||||||||||||||
Low Tide | 3:17AM0.93m | 3:49PM0.35m | 4:59AM0.85m | 4:54PM0.49m | 6:30AM0.72m | |||||||||||||||||||
 |  | | | |  | | | | | |  | |  | | | | | |  | | |  | | |
 | — | — | — | 4:30 | — | — | — | — | — | — | — | 4:30 | — | — | — | — | — | — | — | 4:28 | — | — | — | — |
 | 6:39 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | 6:42 |
— | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 13 | 14 | 14 | 15 | 14 | 16 | 17 | 18 | 17 | 18 | 18 | 18 | 18 | 19 | 19 | 20 | 19 | 19 | 19 | 18 | 19 | 20 | 22 | 22 |
6 | 8 | 9 | 11 | 9 | 10 | 12 | 14 | 13 | 15 | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 19 | 19 | 19 | 19 | 20 | 21 | 21 | |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SW 8 | SSW 8 | SW 8 | SSE 7 | SSW 7 | SSW 7 | S 7 | SSW 7 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | ENE 9 | ENE 9 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 8 | SE 8 |
 kJ | 40 | 30 | 23 | 15 | 10 | 10 | 9 | 8 | 9 | 580 | 513 | 522 | 414 | 414 | 361 | 302 | 248 | 153 | 174 | 184 | 194 | 194 | 183 | 188 |
Swell 2 Height (m) Direction Period (s) | S 9 | SE 8 | — | — | SW 8 | SSE 8 | WSW 7 | WSW 7 | WSW 7 | SW 7 | SW 7 | SW 7 | NE 10 | NNE 10 | ESE 10 | SE 6 | SE 7 | ENE 9 | ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 11 | ENE 11 |
| kJ | 2 | 2 | — | — | 9 | 6 | 5 | 5 | 5 | 2 | 2 | 2 | 4 | 10 | 10 | 94 | 114 | 248 | 216 | 225 | 250 | 265 | 286 | 292 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 7 | — | — | — | — | NE 11 | SW 7 | SW 7 | SW 7 | ESE 10 | ESE 10 | ESE 10 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | E 11 | E 16 |
| kJ | — | — | — | — | — | 2 | — | — | — | — | 5 | 2 | 2 | 2 | 10 | 10 | 11 | 11 | 23 | 12 | 12 | 12 | 2 | 5 |
Wind waves Height (m) Direction Period (s) | NE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | E 9 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | — | — | SE 7 | — | — | — | — | — | — |
| kJ | 1147 | 1198 | 1093 | 969 | 958 | 929 | 831 | 721 | 641 | 775 | 38 | 42 | 35 | 51 | 73 | — | — | 206 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 190 | 190 | 601 | 804 | 846 | 846 | 35 | 35 | 35 | 601 | 24 | 24 | 24 | 35 | 35 | 87 | 30 | 24 | 24 | 24 | 30 | 16 | 30 | 24 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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