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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am 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
21.1° C
(Which is normal for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 7AM is: 1.2m 10s primary swell from a East-northeast direction and 1.3m 7s secondary swell from a Southeast direction (forecast issued at 02:00am May 25). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 May) | 4ft (1.2m) | 10s |
| 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 ForecastLight rain (total 5mm), mostly falling on Wed morning. Warm (max 23°C on Wed afternoon, min 19°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 25 | Tuesday 26 | Wednesday 27 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
ENE 9 | ENE 9 | ENE 10 | ENE 10 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ENE 10 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | SE 7 | |
276 | 283 | 276 | 331 | 350 | 387 | 343 | 331 | 270 | 249 | 245 | 198 | 187 | 184 | 158 | 149 | 158 | 158 | 173 | 169 | 164 | 193 | 202 | 200 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | on | on | on | on | |
High Tide | 11:57PM1.21m | 12:05PM1.03m | 00:40AM1.24m | 1:39PM1.08m | 1:18AM1.28m | 2:46PM1.14m | ||||||||||||||||||
Low Tide | 6:30AM0.72m | 6:00PM0.60m | 7:30AM0.56m | 7:02PM0.68m | 8:15AM0.41m | 7:57PM0.74m | ||||||||||||||||||
 | |  |  | | | |  | |  | | | |  | | | | | |  | | |  | | |
 | — | 4:28 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:44 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 1 | 1 | — | |
Temp °C | 19 | 19 | 19 | 21 | 22 | 22 | 20 | 19 | 19 | 20 | 20 | 22 | 22 | 22 | 21 | 20 | 20 | 20 | 20 | 22 | 22 | 23 | 23 | 22 |
18 | 19 | 19 | 20 | 21 | 21 | 20 | 19 | 20 | 21 | 20 | 22 | 22 | 22 | 21 | 21 | 22 | 22 | 22 | 24 | 23 | 25 | 25 | 23 | |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 7 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | SE 7 |
 kJ | 193 | 199 | 194 | 215 | 200 | 200 | 186 | 169 | 169 | 169 | 173 | 181 | 187 | 162 | 158 | 145 | 158 | 158 | 173 | 169 | 164 | 193 | 202 | 200 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 10 | ENE 10 | 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 11 | ENE 11 | ENE 11 | ENE 10 |
| kJ | 276 | 283 | 276 | 331 | 350 | 387 | 343 | 331 | 270 | 249 | 245 | 198 | 187 | 184 | 149 | 149 | 116 | 102 | 100 | 74 | 64 | 44 | 45 | 43 |
Swell 3 Height (m) Direction Period (s) | ESE 11 | ESE 11 | ESE 11 | ESE 11 | S 9 | SSW 9 | SSW 8 | S 7 | S 7 | S 7 | S 7 | ESE 15 | S 7 | S 6 | ESE 15 | S 6 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 14 | ESE 14 |
| kJ | 12 | 12 | 12 | 12 | 2 | 8 | 21 | 28 | 26 | 24 | 15 | 22 | 8 | 7 | 21 | 3 | 21 | 20 | 20 | 19 | 19 | 19 | 18 | 18 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 24 | 30 | 35 | 35 | 24 | 35 | 24 | 24 | 24 | 30 | 40 | 24 | 40 | 30 | 24 | 16 | 24 | 24 | 24 | 24 | 43 | 24 | 24 | 24 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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