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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Monday 27 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
20.2° C
(Which is 1.4°C warmer than normal for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 1PM is: 1.8m 7s primary swell from a South-southeast direction and 0.4m 12s secondary swell from a Northeast direction, 1.7m 6s secondary swell from a South-southwest direction (forecast issued at 08:00am April 27). The wind direction is predicted to be offshore and the swell rating is 3.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Apr) | 5.5ft (1.7m) | 6s |
| Afternoon (27 Apr) | 4ft (1.2m) | 7s |
| Evening (27 Apr) | 3.5ft (1.1m) | 7s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 18mm), heaviest on Mon morning. Warm (max 21°C on Wed morning, min 13°C on Wed night). Winds increasing (calm on Mon night, strong winds from the SW by Tue night). | ||||||||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thu 30 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SE 6 | SE 6 | SSE 7 | S 7 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSW 7 | SSW 7 | S 7 | SSW 5 | SW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 7 | SW 7 | SW 6 | SW 6 | SSW 6 | SW 6 | SSW 6 | |
139 | 230 | 306 | 142 | 128 | 121 | 128 | 88 | 76 | 82 | 92 | 59 | 110 | 181 | 269 | 284 | 303 | 261 | 158 | 216 | 88 | 67 | 37 | 24 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross-off | off | cross-off | cross | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | |
High Tide | 1:47PM1.10m | 2:24AM1.24m | 2:49PM1.18m | 2:50AM1.29m | 3:38PM1.25m | |||||||||||||||||||
Low Tide | 8:07AM0.65m | 7:56PM0.45m | 8:46AM0.48m | 8:42PM0.49m | 9:19AM0.32m | 9:21PM0.53m | ||||||||||||||||||
 |  |  |  | |  |  | |  |  | | | | | | | | | | | |  | |  | |
 | 4:52 | — | — | — | — | — | — | 4:52 | — | — | — | — | — | — | — | 4:50 | — | — | — | — | — | — | — | 4:50 |
 | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:21 | — | — | — | — | — | — | — | 6:22 | — | — | 6:22 |
9 | 16 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | |
Temp °C | 17 | 18 | 15 | 17 | 16 | 14 | 14 | 15 | 16 | 19 | 20 | 20 | 18 | 19 | 19 | 19 | 19 | 20 | 21 | 19 | 17 | 15 | 14 | 13 |
17 | 19 | 11 | 14 | 12 | 13 | 14 | 14 | 13 | 16 | 18 | 16 | 13 | 14 | 14 | 14 | 15 | 16 | 18 | 18 | 15 | 10 | 10 | 8 | |
Swell 1 Height (m) Direction Period (s) | NE 13 | NE 12 | SSE 7 | S 7 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSW 7 | ESE 7 | ESE 7 | E 8 | E 8 | SSE 7 | E 9 | E 9 | E 9 | E 9 | E 9 | SSW 6 | SW 6 | SSW 6 | SW 6 | SSW 6 |
 kJ | 59 | 40 | 306 | 142 | 128 | 121 | 128 | 88 | 76 | 31 | 43 | 42 | 31 | 25 | 26 | 27 | 26 | 15 | 14 | 103 | 88 | 67 | 37 | 24 |
Swell 2 Height (m) Direction Period (s) | ENE 8 | ENE 8 | NE 12 | SE 7 | ESE 8 | ESE 7 | ESE 8 | ESE 7 | ESE 7 | NE 8 | NE 8 | NE 8 | SE 7 | E 9 | NE 8 | NE 8 | NE 9 | ENE 8 | ENE 8 | E 9 | E 9 | SE 7 | SE 8 | ESE 8 |
| kJ | 13 | 7 | 37 | 126 | 98 | 70 | 72 | 48 | 43 | 23 | 22 | 20 | 12 | 39 | 2 | 2 | 3 | 7 | 7 | 14 | 13 | 2 | 3 | 19 |
Swell 3 Height (m) Direction Period (s) | ESE 12 | ESE 12 | ENE 8 | NE 12 | NE 12 | NE 7 | NE 7 | NE 8 | NE 8 | NE 11 | NE 11 | SE 7 | NE 7 | NNE 7 | SE 11 | SE 11 | S 13 | SE 11 | SE 11 | NE 8 | NE 8 | S 13 | SE 11 | SE 8 |
| kJ | 14 | 14 | 12 | 22 | 22 | 7 | 14 | 23 | 23 | 5 | 5 | 8 | 9 | 5 | 5 | 5 | 3 | 5 | 5 | 11 | 9 | 3 | 5 | 3 |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | SSW 6 | NW 3 | N 3 | — | — | — | SSE 3 | SSW 7 | S 7 | SSW 5 | SW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 7 | SW 7 | SW 6 | NE 5 | ENE 5 | ENE 6 | ENE 6 |
| kJ | 139 | 230 | 253 | 2 | 1 | — | — | — | 1 | 82 | 92 | 59 | 110 | 181 | 269 | 284 | 303 | 261 | 158 | 216 | 13 | 95 | 139 | 119 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 24 | 12 | 6 | 0 | 16 | 16 | 0 | 24 | 24 | 24 | 24 | 849 | 846 | 563 | 279 | 96 | 52 | 35 | 29 | 6 | 29 | 2391 | 1505 | 190 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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