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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 pm Friday 24 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 2AM is: 1.5m 7s primary swell from a East-northeast direction and 0.7m 8s secondary swell from a South direction, 0.4m 14s secondary swell from a Northeast direction (forecast issued at 08:00pm April 24). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Apr) | 5ft (1.5m) | 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 25mm), heaviest during Mon morning. Very mild (max 17°C on Sun morning, min 13°C on Fri night). Winds increasing (light winds from the ENE on Sat night, fresh winds from the N by Mon morning). | ||||||||||||||||||||||||
Fri 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||||||||
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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | E 7 | E 7 | NE 14 | NE 14 | NE 14 | ENE 14 | NE 13 | NE 13 | ESE 6 | NE 13 | ENE 8 | NE 12 | SE 6 | SE 6 | |
236 | 228 | 228 | 228 | 222 | 210 | 161 | 148 | 163 | 173 | 147 | 131 | 169 | 164 | 158 | 123 | 85 | 84 | 103 | 83 | 62 | 656 | 58 | 66 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | |
High Tide | 00:24AM1.08m | 9:39AM1.06m | 1:19AM1.12m | 12:12PM1.03m | 1:55AM1.17m | 1:47PM1.10m | ||||||||||||||||||
Low Tide | 4:13PM0.25m | 4:58AM0.96m | 5:39PM0.36m | 7:12AM0.83m | 6:57PM0.42m | 8:07AM0.65m | ||||||||||||||||||
 |  | | | |  | | | | |  | | | |  | | | |  | |  |  |  | | |
 | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:54 | — | — | — | — | — | — | — | 4:52 | — | — | — | — |
 | 6:17 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | 6:20 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 5 | 9 | 7 | — | |
Temp °C | 14 | 14 | 14 | 13 | 13 | 14 | 15 | 15 | 14 | 13 | 13 | 13 | 13 | 16 | 17 | 17 | 16 | 16 | 15 | 15 | 15 | 14 | 13 | 15 |
9 | 10 | 9 | 9 | 8 | 8 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 13 | 13 | 14 | 14 | 14 | 13 | 14 | 12 | 9 | 9 | 11 | |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | NE 13 | NE 13 | NE 13 | NE 12 | E 7 | E 7 | E 6 | ENE 6 | ENE 7 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | SE 6 | E 6 | SE 6 | SE 6 |
 kJ | 88 | 66 | 66 | 43 | 28 | 28 | 84 | 83 | 80 | 73 | 147 | 131 | 95 | 53 | 47 | 68 | 58 | 65 | 65 | 67 | 62 | 108 | 58 | 66 |
Swell 2 Height (m) Direction Period (s) | SW 9 | SW 9 | NE 15 | NE 14 | NE 14 | NE 13 | S 8 | S 7 | S 7 | ENE 16 | NE 12 | ENE 15 | NE 14 | SE 6 | SE 6 | ENE 14 | NE 13 | NE 13 | NE 13 | NE 13 | NE 13 | NE 12 | NE 12 | NE 12 |
| kJ | 21 | 21 | 56 | 52 | 51 | 88 | 18 | 17 | 8 | 25 | 36 | 87 | 169 | 26 | 33 | 123 | 85 | 84 | 83 | 83 | 59 | 40 | 37 | 36 |
Swell 3 Height (m) Direction Period (s) | ESE 12 | ENE 15 | SW 9 | SW 8 | SW 8 | SW 8 | WSW 8 | SW 8 | ENE 16 | S 7 | NE 15 | NE 12 | SE 11 | NE 14 | NE 14 | ENE 8 | NE 7 | NE 7 | ENE 8 | NE 8 | SE 8 | NE 8 | ENE 9 | ENE 9 |
| kJ | 14 | 22 | 21 | 18 | 18 | 11 | 7 | 3 | 26 | 4 | 57 | 35 | 5 | 164 | 158 | 12 | 13 | 8 | 11 | 16 | 11 | 17 | 17 | 8 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | — | — | — | — | — | SE 6 | — | — | ESE 6 | — | ENE 8 | NE 12 | NE 5 | NE 6 |
| kJ | 236 | 228 | 228 | 228 | 222 | 210 | 161 | 148 | 163 | 173 | — | — | — | — | — | 52 | — | — | 103 | — | 56 | 656 | 60 | 75 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 35 | 35 | 35 | 538 | 538 | 519 | 40 | 87 | 851 | 87 | 35 | 16 | 16 | 24 | 30 | 24 | 24 | 24 | 24 | 16 | 558 | 279 | 190 | 189 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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