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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 pm Monday 25 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
20.9° C
(Which is normal for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 2AM is: 1.0m 11s primary swell from a East-northeast direction and 1.3m 8s secondary swell from a East-southeast direction (forecast issued at 08:00pm May 25). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 May) | 3.5ft (1.0m) | 11s |
| Afternoon (26 May) | 4ft (1.2m) | 8s |
| Evening (26 May) | 4ft (1.2m) | 8s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Wed morning. Warm (max 24°C on Wed afternoon, min 19°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 25 | Tuesday 26 | Wednesday 27 | Thursday 28 | |||||||||||||||||||||
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 | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | |
394 | 331 | 254 | 249 | 245 | 240 | 192 | 188 | 183 | 174 | 199 | 214 | 249 | 249 | 256 | 256 | 214 | 181 | 181 | 155 | 206 | 167 | 173 | 144 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-off | cross-off | cross-off | cross | cross-on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 00:40AM1.24m | 1:39PM1.08m | 1:18AM1.28m | 2:46PM1.14m | 1:53AM1.31m | |||||||||||||||||||
Low Tide | 6:00PM0.60m | 7:30AM0.56m | 7:02PM0.68m | 8:15AM0.41m | 7:57PM0.74m | 8:52AM0.28m | ||||||||||||||||||
 |  |  | | | | |  | | | | | | |  |  |  |  | | | | | | | |
 | — | — | — | 4:28 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — | — | 4:28 | — | — | — | — |
 | 6:42 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | 6:45 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | |
Temp °C | 20 | 19 | 19 | 19 | 20 | 22 | 23 | 23 | 21 | 21 | 20 | 20 | 20 | 22 | 23 | 24 | 23 | 22 | 22 | 22 | 22 | 23 | 24 | 22 |
20 | 19 | 20 | 20 | 21 | 22 | 23 | 23 | 21 | 22 | 22 | 22 | 21 | 23 | 25 | 26 | 26 | 25 | 24 | 24 | 23 | 23 | 22 | 20 | |
Swell 1 Height (m) Direction Period (s) | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 8 |
 kJ | 186 | 193 | 193 | 183 | 187 | 187 | 192 | 188 | 183 | 174 | 199 | 214 | 249 | 249 | 256 | 256 | 214 | 181 | 181 | 155 | 206 | 167 | 173 | 144 |
Swell 2 Height (m) Direction Period (s) | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | ENE 10 | ENE 10 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | NE 10 | ENE 10 |
| kJ | 394 | 331 | 254 | 249 | 245 | 240 | 187 | 180 | 146 | 146 | 104 | 75 | 74 | 69 | 57 | 41 | 44 | 44 | 43 | 41 | 41 | 41 | 28 | 42 |
Swell 3 Height (m) Direction Period (s) | SSW 8 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 6 | S 6 | S 6 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 13 | ESE 13 |
| kJ | 21 | 28 | 26 | 15 | 15 | 15 | 8 | 3 | 3 | 3 | 21 | 20 | 20 | 19 | 19 | 19 | 18 | 18 | 18 | 17 | 17 | 17 | 33 | 31 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 3 | SSW 4 | S 5 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 31 | 56 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 35 | 30 | 16 | 16 | 16 | 16 | 16 | 40 | 16 | 24 | 24 | 0 | 0 | 0 | 40 | 24 | 24 | 0 | 24 | 24 | 24 | 24 | 127 | 127 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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