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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Saturday 25 Apr 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
20.0° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 9AM is: 1.4m 7s primary swell from a East-northeast direction and 0.5m 8s secondary swell from a South direction, 0.5m 13s secondary swell from a Northeast direction (forecast issued at 02:00am April 25). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Apr) | 4.5ft (1.4m) | 7s |
| Afternoon (25 Apr) | 4.5ft (1.3m) | 7s |
| Evening (25 Apr) | 4.5ft (1.3m) | 7s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 33mm), heaviest during Mon morning. Very mild (max 17°C on Sun morning, min 13°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | E 7 | E 6 | NE 14 | NE 14 | NE 14 | NE 14 | NE 13 | NE 13 | SE 6 | SE 6 | ESE 6 | SE 6 | SE 6 | NE 6 | ENE 7 | ENE 7 | |
228 | 259 | 222 | 208 | 197 | 157 | 173 | 173 | 138 | 120 | 169 | 164 | 158 | 91 | 87 | 84 | 85 | 85 | 77 | 55 | 70 | 109 | 62 | 68 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross | cross-off | off | cross-off | off | cross-off | glassy | |
High Tide | 00:24AM1.08m | 9:39AM1.06m | 1:19AM1.12m | 12:12PM1.03m | 1:55AM1.17m | 1:47PM1.10m | ||||||||||||||||||
Low Tide | 4:58AM0.96m | 5:39PM0.36m | 7:12AM0.83m | 6:57PM0.42m | 8:07AM0.65m | 7:56PM0.45m | ||||||||||||||||||
 | |  | | | | |  | | |  |  | | | | | |  |  |  |  | |  | | |
 | — | 4:56 | — | — | — | — | — | — | — | 4:54 | — | — | — | — | — | — | — | 4:52 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:20 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 8 | 16 | 5 | — | 1 | — | |
Temp °C | 14 | 13 | 13 | 14 | 15 | 15 | 14 | 13 | 13 | 13 | 13 | 16 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 14 | 15 | 15 | 14 | 14 |
9 | 8 | 9 | 8 | 10 | 11 | 10 | 10 | 10 | 11 | 11 | 13 | 14 | 14 | 13 | 14 | 15 | 14 | 13 | 10 | 9 | 10 | 12 | 14 | |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | NE 13 | NE 13 | NE 13 | NE 12 | E 7 | E 6 | E 6 | ENE 6 | ENE 7 | ENE 7 | ESE 6 | NE 13 | SE 6 | SE 6 | ESE 6 | SE 6 | SE 6 | ENE 6 | ENE 7 | ENE 7 |
 kJ | 42 | 43 | 28 | 28 | 84 | 83 | 80 | 74 | 138 | 120 | 92 | 56 | 48 | 30 | 63 | 84 | 85 | 85 | 77 | 46 | 70 | 60 | 62 | 68 |
Swell 2 Height (m) Direction Period (s) | NE 15 | NE 14 | NE 14 | NE 13 | S 7 | S 7 | S 7 | SSW 7 | ENE 16 | ENE 15 | NE 14 | SE 6 | SE 6 | NE 14 | NE 13 | ENE 9 | NE 13 | NE 13 | NE 13 | NE 12 | NE 12 | SE 7 | SE 7 | SE 7 |
| kJ | 56 | 52 | 51 | 88 | 17 | 17 | 9 | 10 | 95 | 87 | 169 | 26 | 33 | 91 | 87 | 15 | 83 | 83 | 59 | 55 | 37 | 49 | 38 | 51 |
Swell 3 Height (m) Direction Period (s) | SW 9 | SW 8 | SW 8 | SW 8 | WSW 8 | SW 8 | ENE 16 | ENE 16 | NE 12 | NE 12 | SE 11 | NE 14 | NE 14 | SE 13 | ENE 8 | NE 8 | ENE 8 | ENE 8 | SE 8 | SE 8 | ESE 12 | S 7 | SSW 7 | S 6 |
| kJ | 21 | 18 | 11 | 11 | 7 | 3 | 26 | 25 | 36 | 35 | 5 | 164 | 158 | 7 | 14 | 9 | 7 | 12 | 17 | 16 | 14 | 23 | 26 | 31 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | — | — | — | — | — | SE 6 | — | ESE 6 | — | — | NE 8 | NE 5 | ENE 6 | NE 6 | — | — |
| kJ | 228 | 259 | 222 | 208 | 197 | 157 | 173 | 173 | — | — | — | — | — | 51 | — | 77 | — | — | 55 | 40 | 57 | 109 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 35 | 538 | 537 | 519 | 40 | 87 | 87 | 87 | 16 | 35 | 0 | 24 | 24 | 24 | 24 | 24 | 24 | 35 | 119 | 537 | 184 | 189 | 0 | 0 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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