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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm Monday 04 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
19.3° C
(Which is normal for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 6PM is: 3.5m 9s primary swell from a Southwest direction and 0.4m 10s secondary swell from a East-southeast direction (forecast issued at 02:00pm May 04). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 May) | - | - |
| Afternoon (04 May) | 11ft (3.5m) | 9s |
| Evening (04 May) | 8ft (2.5m) | 9s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 7mm), mostly falling on Wed night. Warm (max 21°C on Mon afternoon, min 13°C on Mon night). Winds decreasing (strong winds from the SW on Mon afternoon, light winds from the ESE by Wed night). | ||||||||||||||||||||||||
Mon 4 | Tuesday 5 | Wednesday 6 | Thu 7 | |||||||||||||||||||||
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 | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 9 | SSW 9 | SW 9 | SW 9 | SW 9 | SSW 9 | SW 9 | NE 7 | SW 9 | SW 9 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SE 6 | ESE 10 | SE 7 | |
2060 | 1760 | 1671 | 1134 | 760 | 497 | 183 | 121 | 64 | 54 | 63 | 61 | 60 | 59 | 58 | 56 | 63 | 65 | 80 | 87 | 77 | 80 | 103 | 131 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross | |
High Tide | 6:54PM1.22m | 5:17AM1.32m | 7:36PM1.17m | 5:46AM1.29m | 8:24PM1.12m | 6:19AM1.24m | ||||||||||||||||||
Low Tide | 11:49AM-0.02m | 11:57PM0.78m | 12:24PM0.02m | 00:29AM0.82m | 1:02PM0.08m | 1:04AM0.86m | ||||||||||||||||||
 |  | |  | | |  | | | | |  | |  | | | | | |  | | |  | | |
 | — | — | — | — | — | 4:45 | — | — | — | — | — | — | — | 4:43 | — | — | — | — | — | — | — | 4:43 | — | — |
 | — | — | 6:25 | — | — | — | — | — | — | — | 6:27 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | 6:28 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 2 | 1 | — | |
Temp °C | 22 | 21 | 20 | 18 | 16 | 14 | 13 | 16 | 17 | 16 | 16 | 17 | 17 | 17 | 17 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 18 | 19 |
15 | 14 | 11 | 13 | 10 | 8 | 9 | 11 | 13 | 12 | 13 | 13 | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 15 | 17 | 17 | 19 | 19 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SW 9 | SSW 9 | SW 9 | SW 9 | SW 9 | SW 9 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | SE 6 | SE 7 |
 kJ | 58 | 40 | 40 | 43 | 760 | 497 | 183 | 95 | 64 | 47 | 63 | 61 | 60 | 59 | 58 | 56 | 56 | 55 | 55 | 54 | 55 | 61 | 103 | 131 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | ESE 10 | ESE 10 | S 7 | NE 8 | S 7 | ESE 10 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 7 | SW 7 | SW 7 | SW 7 | W 6 | W 6 | — | ESE 10 | ESE 10 |
| kJ | — | — | — | — | 42 | 40 | 54 | 46 | 24 | 54 | 35 | 17 | 17 | 10 | 6 | 5 | 2 | 2 | 2 | 1 | 1 | — | 85 | 65 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | ESE 10 | S 7 | ESE 10 | S 7 | SSE 7 | NE 7 | NE 11 | — | SE 11 | N 10 | N 7 | N 7 | N 7 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 39 | 38 | 55 | 24 | 15 | 2 | 5 | — | 19 | 2 | 1 | 1 | 1 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 9 | SSW 9 | SW 9 | SW 9 | NE 5 | NE 5 | NE 5 | NE 7 | ENE 5 | E 4 | E 4 | SE 7 | SSE 4 | SSE 5 | SSE 5 | SSE 5 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SE 6 | — | ENE 4 |
| kJ | 2060 | 1760 | 1671 | 1134 | 4 | 33 | 29 | 121 | 9 | 7 | 7 | 55 | 22 | 35 | 42 | 55 | 63 | 65 | 80 | 87 | 77 | 80 | — | 8 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 519 | 804 | 537 | 35 | 87 | 78 | 0 | 0 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 190 | 24 | 126 | 126 | 24 | 24 | 24 | 24 | 16 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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