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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Thursday 23 Apr 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
19.4° C
(Which is slightly warmer than usual)How big are the waves at Amatu today?
The current surf forecast for Amatu at 6AM is: 1.0m 6s primary swell from a Southeast direction and 0.6m 10s secondary swell from a East direction (forecast issued at 02:00am April 23). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Apr) | 2ft (0.6m) | 10s |
| Afternoon (23 Apr) | 1.5ft (0.5m) | 9s |
| Evening (23 Apr) | 1.5ft (0.5m) | 9s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 29mm), heaviest during Thu night. Very mild (max 18°C on Thu morning, min 12°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||||||||||
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 | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SE 7 | SE 7 | SE 6 | E 10 | SE 6 | SE 12 | E 10 | E 9 | E 9 | ESE 6 | E 9 | NE 6 | NE 7 | S 9 | SSW 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | E 6 | NE 13 | NE 12 | |
158 | 111 | 83 | 70 | 59 | 45 | 51 | 42 | 42 | 42 | 28 | 196 | 215 | 151 | 120 | 125 | 128 | 156 | 147 | 157 | 127 | 97 | 79 | 74 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross-off | cross | cross-on | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross | |
High Tide | 9:31PM1.12m | 7:03AM1.30m | 10:56PM1.07m | 7:53AM1.18m | 00:24AM1.08m | 9:39AM1.06m | ||||||||||||||||||
Low Tide | 1:35AM0.94m | 2:59PM0.11m | 2:36AM0.98m | 4:13PM0.25m | 4:58AM0.96m | 5:39PM0.36m | ||||||||||||||||||
 |  |  |  | | |  |  |  | | | | | | | | | | |  | | | | | |
 | — | 4:58 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:17 | — | — | — | — | — | — | — | 6:19 | — |
— | — | — | 1 | 1 | 4 | 6 | 10 | 4 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 17 | 17 | 18 | 17 | 14 | 13 | 13 | 14 | 13 | 12 | 14 | 16 | 15 | 14 | 14 | 14 | 14 | 13 | 14 | 14 | 15 | 15 | 14 |
18 | 17 | 17 | 18 | 16 | 14 | 12 | 9 | 8 | 7 | 6 | 8 | 10 | 10 | 10 | 10 | 10 | 9 | 8 | 8 | 9 | 11 | 12 | 11 | |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 7 | SE 6 | SE 6 | SE 6 | SE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | S 6 | SSW 8 | S 9 | S 9 | SSW 8 | SSW 8 | S 8 | S 8 | S 7 | NE 13 | NE 13 | NE 13 | NE 13 | NE 12 |
 kJ | 158 | 111 | 83 | 70 | 59 | 40 | 33 | 24 | 27 | 37 | 13 | 32 | 125 | 151 | 120 | 92 | 43 | 41 | 27 | 88 | 84 | 83 | 79 | 74 |
Swell 2 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 10 | E 9 | E 9 | E 9 | E 9 | S 8 | SW 8 | E 9 | E 8 | NE 15 | SW 8 | SW 8 | NE 14 | S 7 | SSE 7 | SSE 6 | SSE 6 | ENE 16 |
| kJ | 71 | 70 | 68 | 67 | 46 | 45 | 46 | 42 | 42 | 42 | 28 | 50 | 32 | 23 | 20 | 34 | 25 | 25 | 70 | 26 | 15 | 8 | 8 | 25 |
Swell 3 Height (m) Direction Period (s) | NE 14 | NE 14 | NE 14 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | E 9 | E 9 | ESE 12 | ESE 12 | ESE 12 | NE 15 | NE 14 | SW 8 | SW 8 | SW 8 | SW 8 | SSW 8 | S 6 |
| kJ | 51 | 50 | 50 | 26 | 25 | 39 | 23 | 22 | 22 | 22 | 22 | 28 | 40 | 14 | 14 | 14 | 56 | 52 | 24 | 11 | 11 | 10 | 6 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | ESE 6 | ENE 3 | NE 4 | NE 5 | NE 6 | NE 6 | NE 7 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | E 6 | E 6 | E 6 |
| kJ | — | — | — | — | — | — | 51 | 7 | 22 | 70 | 143 | 196 | 215 | 141 | 104 | 125 | 128 | 156 | 147 | 157 | 127 | 97 | 79 | 68 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 24 | 6 | 0 | 6 | 24 | 0 | 0 | 279 | 279 | 190 | 184 | 184 | 184 | 60 | 87 | 87 | 35 | 184 | 190 | 537 | 519 | 540 | 858 | 30 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
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