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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Tuesday 28 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
19.9° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 6AM is: 0.8m 7s primary swell from a South-southwest direction and 0.6m 8s secondary swell from a East-southeast direction (forecast issued at 02:00am April 28). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Apr) | 2.5ft (0.7m) | 7s |
| Afternoon (28 Apr) | 2ft (0.6m) | 8s |
| Evening (28 Apr) | 6ft (1.8m) | 6s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 23mm), heaviest during Thu night. Warm (max 20°C on Tue morning, min 14°C on Wed night). Winds decreasing (fresh winds from the SW on Tue night, light winds from the NE by Wed morning). | ||||||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
NE 7 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | E 8 | SSW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SSW 7 | SW 6 | SSW 6 | SSW 6 | SW 6 | SSW 6 | ENE 6 | ESE 7 | ENE 5 | E 5 | E 5 | E 5 | ESE 6 | |
132 | 88 | 70 | 43 | 63 | 42 | 56 | 209 | 252 | 237 | 201 | 165 | 219 | 80 | 49 | 39 | 25 | 81 | 18 | 72 | 80 | 83 | 85 | 136 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | |
High Tide | 2:24AM1.24m | 2:49PM1.18m | 2:50AM1.29m | 3:38PM1.25m | 3:15AM1.33m | 4:21PM1.29m | ||||||||||||||||||
Low Tide | 8:46AM0.48m | 8:42PM0.49m | 9:19AM0.32m | 9:21PM0.53m | 9:50AM0.18m | |||||||||||||||||||
 |  |  |  |  | | | | | | | | | | |  | | | | | | | |  | |
 | — | 4:52 | — | — | — | — | — | — | — | 4:50 | — | — | — | — | — | — | — | 4:50 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:21 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | |
Temp °C | 14 | 15 | 16 | 18 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 20 | 19 | 17 | 16 | 16 | 15 | 14 | 14 | 15 | 16 | 15 | 16 | 16 |
13 | 14 | 15 | 15 | 17 | 17 | 14 | 14 | 14 | 16 | 17 | 19 | 19 | 13 | 12 | 11 | 10 | 10 | 9 | 11 | 12 | 11 | 13 | 13 | |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SSW 8 | SSW 7 | SSW 7 | ESE 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | SSW 6 | SSW 6 | SSW 6 | SW 6 | SSW 6 | SW 6 | ESE 7 | E 8 | SE 9 | E 9 | SE 7 | NE 8 |
 kJ | 104 | 88 | 70 | 43 | 44 | 42 | 30 | 39 | 41 | 26 | 26 | 25 | 106 | 80 | 49 | 39 | 25 | 18 | 18 | 19 | 12 | 13 | 16 | 2 |
Swell 2 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 8 | ESE 7 | NE 7 | SSE 7 | SSE 7 | SSE 7 | NE 10 | NE 10 | NE 10 | NE 9 | E 9 | E 9 | ESE 9 | SE 8 | E 8 | E 8 | SW 6 | SW 6 | SW 6 | SSE 9 | SE 9 | SW 6 |
| kJ | 70 | 48 | 44 | 43 | 23 | 18 | 18 | 17 | 4 | 4 | 4 | 3 | 25 | 24 | 25 | 3 | 19 | 29 | 9 | 5 | 5 | 8 | 13 | 1 |
Swell 3 Height (m) Direction Period (s) | NE 7 | NE 8 | NE 7 | NE 7 | NE 11 | NE 7 | NE 6 | ENE 6 | SE 11 | SE 11 | SE 11 | SE 11 | ENE 8 | SE 11 | SE 11 | SE 11 | SE 7 | SE 8 | SSE 8 | SSE 8 | S 12 | NE 8 | NE 8 | E 13 |
| kJ | 65 | 45 | 26 | 25 | 5 | 11 | 6 | 4 | 5 | 5 | 5 | 5 | 7 | 5 | 5 | 5 | 2 | 3 | 6 | 7 | 3 | 2 | 2 | 3 |
Wind waves Height (m) Direction Period (s) | NE 7 | — | — | — | SSW 7 | SSW 4 | SSW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SSW 7 | SW 6 | NE 5 | NE 5 | ENE 5 | ENE 6 | ENE 6 | ENE 5 | ENE 5 | E 5 | E 5 | E 5 | ESE 6 |
| kJ | 132 | — | — | — | 63 | 22 | 56 | 209 | 252 | 237 | 201 | 165 | 219 | 14 | 55 | 103 | 111 | 81 | 77 | 72 | 80 | 83 | 85 | 136 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 8 | 24 | 24 | 24 | 2839 | 846 | 538 | 279 | 71 | 29 | 0 | 0 | 35 | 87 | 1078 | 903 | 903 | 1078 | 1078 | 231 | 1541 | 190 | 622 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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