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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm 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
18.1° 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 9PM is: 1.4m 9s primary swell from a East-southeast direction (forecast issued at 02:00pm May 14). An open ocean swell of 0.8m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 May) | - | - |
| Afternoon (14 May) | 5ft (1.5m) | 9s |
| Evening (14 May) | 4.5ft (1.4m) | 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 afternoon. Warm (max 22°C on Sun morning, min 14°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 14 | Friday 15 | Saturday 16 | Sun 17 | |||||||||||||||||||||
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 9 | E 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 9 | ENE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ENE 9 | ENE 9 | E 9 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | |
367 | 388 | 295 | 340 | 436 | 347 | 380 | 348 | 287 | 295 | 282 | 234 | 192 | 192 | 135 | 176 | 164 | 75 | 104 | 127 | 160 | 255 | 234 | 228 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross | glassy | cross-off | cross-off | cross-off | |
High Tide | 3:03PM1.26m | 2:33AM1.36m | 3:59PM1.35m | 3:05AM1.42m | 4:54PM1.41m | 3:40AM1.46m | ||||||||||||||||||
Low Tide | 8:44PM0.61m | 9:16AM0.06m | 9:31PM0.69m | 9:58AM-0.11m | 10:16PM0.77m | |||||||||||||||||||
 | |  |  | |  |  | |  | | |  | | | | | | | | | | | | | |
 | — | — | — | — | — | 4:35 | — | — | — | — | — | — | — | 4:35 | — | — | — | — | — | — | — | 4:33 | — | — |
 | — | — | 6:34 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:36 | — | — | — | — | 6:36 |
1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 20 | 20 | 18 | 16 | 15 | 14 | 15 | 16 | 18 | 18 | 17 | 18 | 17 | 17 | 16 | 19 | 21 | 20 | 20 | 19 | 18 | 17 | 17 | 21 |
18 | 17 | 15 | 12 | 12 | 11 | 12 | 13 | 15 | 15 | 15 | 17 | 17 | 17 | 15 | 18 | 20 | 18 | 19 | 19 | 19 | 17 | 17 | 20 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | E 9 | ESE 9 | ESE 9 | E 9 | E 9 | SE 12 | SE 10 | SE 10 | SE 9 | E 9 | E 9 | E 9 | E 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 8 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 |
 kJ | 367 | 388 | 295 | 340 | 436 | 347 | 21 | 57 | 47 | 55 | 282 | 234 | 192 | 192 | 135 | 106 | 164 | 61 | 50 | 127 | 160 | 255 | 234 | 228 |
Swell 2 Height (m) Direction Period (s) | S 7 | NNE 10 | NE 10 | — | NE 10 | NE 10 | SE 10 | SE 12 | SSE 12 | NNE 8 | SE 9 | SE 9 | SE 10 | SE 9 | SE 8 | ESE 9 | SE 9 | SE 9 | ESE 9 | E 9 | E 9 | NE 9 | SE 10 | SE 10 |
| kJ | 1 | 10 | 4 | — | 4 | 4 | 4 | 6 | 15 | 6 | 29 | 37 | 45 | 28 | 65 | 103 | 39 | 20 | 17 | 39 | 41 | 12 | 39 | 84 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NE 9 | NE 9 | S 6 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 12 | SE 11 | SE 11 | NE 8 | ESE 9 | ESE 9 | ENE 8 | NE 8 | NE 9 |
| kJ | — | — | — | — | — | — | — | 3 | 3 | 1 | 19 | 19 | 19 | 19 | 19 | 22 | 19 | 19 | 10 | 29 | 7 | 14 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | — | NE 4 | ENE 4 | NE 4 | NE 5 | NE 5 | E 9 | ENE 9 | E 9 | E 9 | — | — | — | NE 7 | NE 7 | ENE 9 | — | ESE 6 | ESE 6 | — | — | — | — | — |
| kJ | — | 11 | 24 | 24 | 64 | 29 | 380 | 348 | 287 | 295 | — | — | — | 11 | 11 | 176 | — | 75 | 104 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 35 | 87 | 87 | 190 | 40 | 40 | 40 | 35 | 40 | 43 | 87 | 40 | 0 | 0 | 0 | 16 | 16 | 40 | 24 | 30 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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