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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm Friday 08 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
19.7° C
(Which is normal for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 10PM is: 2.1m 7s primary swell from a South-southwest direction and 0.7m 10s secondary swell from a Southeast direction, 0.1m 11s secondary swell from a Northeast direction (forecast issued at 02:00pm May 08). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 May) | - | - |
| Afternoon (08 May) | 5ft (1.5m) | 6s |
| Evening (08 May) | 7ft (2.1m) | 7s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 22°C on Fri afternoon, min 16°C on Fri night). Winds decreasing (strong winds from the SW on Fri afternoon, calm by Sat morning). | ||||||||||||||||||||||||
Fri 8 | Saturday 9 | Sunday 10 | Mon 11 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
ESE 10 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | SW 7 | SW 8 | SW 8 | SW 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | ESE 9 | SE 6 | SSE 6 | SSE 6 | ESE 10 | ESE 10 | |
139 | 160 | 350 | 397 | 425 | 554 | 440 | 247 | 128 | 108 | 112 | 112 | 106 | 102 | 100 | 113 | 106 | 86 | 73 | 73 | 87 | 119 | 90 | 90 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | glassy | off | cross-on | cross-on | glassy | cross-off | cross-off | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 10:25PM1.08m | 7:46AM1.10m | 11:30PM1.10m | 9:11AM1.02m | 00:21AM1.14m | |||||||||||||||||||
Low Tide | 2:37PM0.25m | 3:00AM0.92m | 3:38PM0.33m | 4:43AM0.90m | 4:48PM0.39m | 6:15AM0.80m | ||||||||||||||||||
 |  | |  |  | | |  | | | | |  | | | | | | | | | | | | |
 | — | — | — | — | — | 4:41 | — | — | — | — | — | — | — | 4:39 | — | — | — | — | — | — | — | 4:39 | — | — |
 | — | — | 6:29 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | 6:31 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 22 | 21 | 20 | 19 | 16 | 16 | 18 | 19 | 21 | 17 | 17 | 16 | 16 | 16 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 19 |
20 | 18 | 16 | 14 | 12 | 8 | 14 | 16 | 18 | 18 | 13 | 15 | 15 | 15 | 14 | 15 | 15 | 14 | 15 | 15 | 15 | 15 | 15 | 17 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | SE 10 | SE 10 | SE 10 | ESE 10 | SW 8 | SW 8 | SW 8 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SSE 6 | ESE 10 |
 kJ | 133 | 135 | 112 | 112 | 110 | 95 | 440 | 247 | 128 | 108 | 112 | 112 | 106 | 102 | 100 | 113 | 106 | 86 | 73 | 73 | 73 | 65 | 85 | 90 |
Swell 2 Height (m) Direction Period (s) | — | NE 11 | NE 11 | NE 11 | N 11 | NE 11 | ESE 10 | SE 10 | SE 10 | WSW 7 | SW 8 | S 6 | SSW 6 | SSW 6 | SSW 6 | WSW 7 | SW 7 | NE 6 | SE 11 | ESE 11 | ESE 11 | SE 11 | ESE 10 | — |
| kJ | — | 5 | 5 | 5 | 2 | 5 | 92 | 82 | 82 | 37 | 28 | 20 | 13 | 12 | 7 | 4 | 2 | 2 | 20 | 13 | 13 | 31 | 90 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | N 11 | N 11 | NE 5 | S 7 | NE 5 | SW 7 | SW 7 | SW 7 | WSW 7 | NE 6 | NE 6 | W 6 | NNE 5 | — | E 10 | — | — | — |
| kJ | — | — | — | — | — | — | 2 | 2 | 22 | 32 | 6 | 14 | 14 | 12 | 5 | 2 | 2 | 1 | 2 | — | 2 | — | — | — |
Wind waves Height (m) Direction Period (s) | S 6 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | SW 7 | WSW 8 | NE 5 | — | — | S 6 | — | — | ENE 4 | ENE 4 | E 4 | ESE 4 | SE 5 | SE 5 | SE 6 | SSE 6 | SSE 6 | — | SSE 6 |
| kJ | 139 | 160 | 350 | 397 | 425 | 554 | 1227 | 23 | — | — | 21 | — | — | 4 | 3 | 6 | 21 | 35 | 53 | 69 | 87 | 119 | — | 57 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 567 | 519 | 537 | 538 | 86 | 30 | 0 | 0 | 0 | 0 | 189 | 24 | 0 | 0 | 0 | 24 | 24 | 24 | 24 | 24 | 24 | 30 | 30 | 24 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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