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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Thursday 14 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
18.0° C
(Which is 2.3°C colder than average for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 8AM is: 1.5m 10s primary swell from a East-southeast direction and 0.1m 7s secondary swell from a South direction (forecast issued at 02:00am May 14). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 May) | 5ft (1.5m) | 10s |
| Afternoon (14 May) | 4.5ft (1.4m) | 9s |
| Evening (14 May) | 5ft (1.6m) | 9s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Thu morning. Warm (max 21°C on Thu morning, min 15°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 14 | Friday 15 | Saturday 16 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ENE 9 | ENE 8 | ESE 7 | ESE 8 | |
471 | 471 | 408 | 383 | 321 | 307 | 380 | 425 | 339 | 300 | 440 | 409 | 400 | 397 | 351 | 313 | 311 | 247 | 224 | 188 | 132 | 103 | 188 | 187 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross | |
High Tide | 2:01AM1.30m | 3:03PM1.26m | 2:33AM1.36m | 3:59PM1.35m | 3:05AM1.42m | 4:54PM1.41m | ||||||||||||||||||
Low Tide | 8:35AM0.26m | 8:44PM0.61m | 9:16AM0.06m | 9:31PM0.69m | 9:58AM-0.11m | |||||||||||||||||||
 | |  | |  | |  |  | |  | | | | | | | | | | | | | | | |
 | — | 4:37 | — | — | — | — | — | — | — | 4:35 | — | — | — | — | — | — | — | 4:35 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:36 | — |
— | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 16 | 17 | 20 | 21 | 20 | 18 | 16 | 15 | 15 | 15 | 16 | 17 | 18 | 17 | 17 | 17 | 17 | 17 | 20 | 21 | 20 | 20 | 19 |
17 | 15 | 17 | 19 | 19 | 17 | 16 | 12 | 11 | 11 | 11 | 12 | 13 | 15 | 15 | 16 | 16 | 16 | 15 | 18 | 19 | 19 | 20 | 19 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | E 9 | E 9 | E 9 | E 9 | SE 12 | SE 10 | SE 10 | SE 9 | SE 11 | E 9 | E 9 | E 9 | E 9 | E 9 | SE 7 | ESE 7 | SE 7 | ESE 8 |
 kJ | 471 | 471 | 408 | 383 | 321 | 307 | 380 | 425 | 339 | 300 | 21 | 57 | 47 | 43 | 20 | 313 | 311 | 247 | 224 | 188 | 44 | 99 | 122 | 187 |
Swell 2 Height (m) Direction Period (s) | NE 10 | NE 10 | NE 10 | S 7 | S 7 | NE 10 | NE 10 | — | S 7 | — | SE 10 | SE 12 | SSE 12 | SE 12 | ESE 9 | SE 9 | SE 9 | SE 11 | SE 8 | ESE 9 | ESE 9 | E 9 | E 8 | E 8 |
| kJ | 4 | 4 | 4 | 1 | 1 | 4 | 4 | — | 1 | — | 4 | 6 | 15 | 22 | 17 | 28 | 20 | 19 | 29 | 53 | 30 | 85 | 71 | 37 |
Swell 3 Height (m) Direction Period (s) | S 9 | — | — | S 7 | — | — | — | — | — | — | — | SE 16 | S 7 | S 7 | NE 9 | SE 11 | SE 11 | SE 9 | SE 11 | SE 11 | SE 11 | SE 9 | ESE 9 | ESE 9 |
| kJ | 2 | — | — | 1 | — | — | — | — | — | — | — | 10 | 1 | 1 | 12 | 19 | 19 | 13 | 19 | 20 | 31 | 21 | 31 | 28 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ENE 3 | ENE 4 | NE 4 | NE 10 | NE 5 | NE 5 | E 9 | ENE 9 | ENE 9 | E 9 | E 9 | — | NE 7 | NE 7 | NE 6 | NNE 8 | ENE 9 | ENE 8 | ESE 7 | — |
| kJ | — | — | — | — | 1 | 10 | 26 | 4 | 40 | 50 | 440 | 409 | 400 | 397 | 351 | — | 37 | 22 | 11 | 6 | 132 | 103 | 188 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 35 | 87 | 87 | 279 | 190 | 40 | 190 | 190 | 2839 | 87 | 87 | 16 | 0 | 0 | 0 | 0 | 40 | 35 | 30 | 40 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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