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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm Tuesday 05 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
19.1° C
(Which is slightly cooler than normal)How big are the waves at Amatu today?
The current surf forecast for Amatu at 8PM is: 0.6m 10s primary swell from a East-southeast direction and 0.4m 8s secondary swell from a Southwest direction, 0.8m 4s secondary swell from a Southeast direction (forecast issued at 02:00pm May 05). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 May) | - | - |
| Afternoon (05 May) | 2ft (0.6m) | 9s |
| Evening (05 May) | 2ft (0.6m) | 10s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 13mm), heaviest on Wed night. Warm (max 22°C on Fri morning, min 16°C on Tue afternoon). Winds increasing (calm on Thu afternoon, fresh winds from the SW by Fri morning). | ||||||||||||||||||||||||
Tue 5 | Wednesday 6 | Thursday 7 | Fri 8 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SW 9 | SW 9 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | SE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 7 | SE 7 | SE 7 | SSE 7 | S 7 | ESE 10 | S 7 | ESE 10 | ESE 10 | |
62 | 59 | 63 | 61 | 60 | 59 | 58 | 58 | 56 | 68 | 77 | 98 | 95 | 85 | 78 | 86 | 88 | 114 | 142 | 92 | 127 | 128 | 178 | 182 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | cross-off | cross-off | off | glassy | cross-on | cross-on | cross | cross | cross | cross | |
High Tide | 7:36PM1.17m | 5:46AM1.29m | 8:24PM1.12m | 6:19AM1.24m | 9:20PM1.09m | 6:56AM1.17m | ||||||||||||||||||
Low Tide | 12:24PM0.02m | 00:29AM0.82m | 1:02PM0.08m | 1:04AM0.86m | 1:46PM0.16m | 1:51AM0.90m | ||||||||||||||||||
 | |  |  |  |  |  | | | |  |  | | | | | | | | | | | | | |
 | — | — | — | — | — | 4:43 | — | — | — | — | — | — | — | 4:43 | — | — | — | — | — | — | — | 4:41 | — | — |
 | — | — | 6:27 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | 6:29 |
— | — | — | — | — | — | — | — | — | — | 1 | 1 | 3 | 2 | 4 | 1 | 1 | — | — | — | — | — | — | — | |
Temp °C | 17 | 16 | 16 | 16 | 16 | 16 | 17 | 18 | 18 | 18 | 17 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 18 | 17 | 17 | 18 | 21 |
12 | 12 | 12 | 12 | 13 | 13 | 15 | 14 | 15 | 16 | 16 | 17 | 16 | 18 | 19 | 18 | 21 | 21 | 20 | 18 | 16 | 15 | 16 | 18 | |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 9 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SE 6 | ESE 6 | SE 6 | SE 7 | SE 7 | SE 7 | SSE 7 | S 7 | S 7 | ESE 10 | ESE 10 | ESE 10 |
 kJ | 62 | 59 | 63 | 61 | 60 | 59 | 58 | 58 | 56 | 56 | 55 | 55 | 95 | 33 | 78 | 86 | 84 | 114 | 142 | 92 | 85 | 116 | 178 | 182 |
Swell 2 Height (m) Direction Period (s) | S 7 | ESE 10 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 7 | SW 7 | SW 7 | SW 7 | — | ESE 9 | SSE 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 8 | ESE 10 | SE 7 | — | — |
| kJ | 35 | 54 | 34 | 17 | 16 | 10 | 6 | 5 | 2 | 2 | 2 | — | 55 | 48 | 65 | 85 | 88 | 88 | 109 | 48 | 114 | 27 | — | — |
Swell 3 Height (m) Direction Period (s) | ESE 10 | S 7 | SSE 7 | NE 7 | S 6 | ESE 11 | SE 11 | NE 9 | N 8 | N 7 | N 6 | N 6 | N 6 | ESE 10 | — | — | — | — | — | SE 8 | SE 7 | — | — | — |
| kJ | 37 | 24 | 15 | 2 | 7 | 12 | 19 | 3 | 1 | 1 | 1 | 1 | 1 | 60 | — | — | — | — | — | 48 | 42 | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 5 | E 5 | E 4 | SE 4 | SE 4 | SE 5 | SE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SE 6 | — | SE 6 | — | NE 7 | N 7 | — | — | — | SSW 6 | S 7 | SSW 7 | SSW 7 |
| kJ | 14 | 12 | 9 | 20 | 26 | 38 | 44 | 55 | 55 | 68 | 77 | 98 | — | 85 | — | 2 | 1 | — | — | — | 127 | 128 | 139 | 118 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 35 | 87 | 563 | 24 | 24 | 24 | 24 | 24 | 24 | 87 | 601 | 96 | 24 | 24 | 0 | 0 | 0 | 0 | 24 | 24 | 24 | 30 | 30 | 279 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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