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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 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 9PM is: 1.2m 11s primary swell from a East-northeast direction and 1.3m 8s secondary swell from a East-southeast direction (forecast issued at 02:00pm May 25). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 May) | - | - |
| Afternoon (25 May) | 4.5ft (1.3m) | 11s |
| Evening (25 May) | 4ft (1.2m) | 11s |
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 Wed afternoon. Warm (max 23°C on Tue morning, min 19°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 25 | Tuesday 26 | Wednesday 27 | Thu 28 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
ENE 11 | ENE 11 | ENE 11 | ENE 11 | ESE 8 | ENE 11 | ENE 11 | ENE 11 | ESE 8 | ESE 8 | ESE 8 | ENE 10 | ENE 10 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | |
350 | 387 | 394 | 331 | 254 | 265 | 245 | 240 | 192 | 188 | 183 | 153 | 143 | 150 | 177 | 177 | 177 | 186 | 181 | 181 | 204 | 197 | 202 | 167 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross-on | cross | cross-off | cross-off | cross-off | cross | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 12:05PM1.03m | 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 | — | — | — | — | — | — | |
Temp °C | 21 | 22 | 20 | 19 | 19 | 19 | 20 | 22 | 23 | 22 | 21 | 20 | 20 | 20 | 20 | 22 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 |
20 | 21 | 20 | 19 | 20 | 20 | 21 | 22 | 23 | 22 | 22 | 22 | 22 | 22 | 21 | 23 | 24 | 26 | 26 | 24 | 23 | 23 | 22 | 22 | |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | ESE 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 8 | ESE 8 | ESE 8 | ESE 8 |
 kJ | 223 | 200 | 186 | 193 | 219 | 198 | 203 | 187 | 192 | 188 | 183 | 153 | 142 | 150 | 177 | 177 | 177 | 186 | 181 | 181 | 204 | 197 | 202 | 167 |
Swell 2 Height (m) Direction Period (s) | ENE 11 | ENE 11 | 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 10 | ENE 9 | ENE 11 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | ENE 10 |
| kJ | 350 | 387 | 394 | 331 | 254 | 265 | 245 | 240 | 187 | 180 | 146 | 146 | 143 | 137 | 75 | 52 | 47 | 44 | 44 | 44 | 42 | 41 | 41 | 41 |
Swell 3 Height (m) Direction Period (s) | S 9 | SSW 9 | 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 |
| kJ | 2 | 8 | 21 | 28 | 25 | 15 | 15 | 15 | 8 | 3 | 3 | 3 | 21 | 20 | 20 | 19 | 19 | 19 | 18 | 18 | 18 | 17 | 17 | 17 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 5 | — | — | SSW 3 | SSW 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 8 | 22 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 35 | 35 | 16 | 35 | 16 | 16 | 0 | 16 | 16 | 16 | 16 | 24 | 24 | 0 | 0 | 0 | 40 | 24 | 24 | 24 | 24 | 24 | 35 | 127 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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