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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Sunday 31 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
21.8° C
(Which is normal for this time of year)How big are the waves at Amatu today (31 May):
- Morning surf: Morning surf (31 May, local time) - 3ft (0.9m), 10s period with E swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 3ft (0.9m), 10s period with ESE swell.
- Evening surf: Evening surf (31 May, local time) - 2.5ft (0.8m), 12s period with S swell.
The current surf forecast for Amatu at 5PM is: 0.9m 10s primary swell from a East direction and 0.6m 12s secondary swell from a South direction, 0.6m 3s secondary swell from a South-southwest direction (forecast issued at 08:00am May 31). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 3ft (0.9m) | 10s |
| Afternoon (31 May) | 3ft (0.9m) | 10s |
| Evening (31 May) | 2.5ft (0.8m) | 12s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 6mm), mostly falling on Tue night. Warm (max 24°C on Sun morning, min 19°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||||||
Sunday 31 | Monday 1 | Tuesday 2 | Wed 3 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 10 | E 10 | E 10 | ESE 10 | E 10 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | S 12 | SSW 14 | SSW 14 | SW 13 | SW 13 | SW 13 | SW 12 | |
164 | 161 | 128 | 167 | 161 | 174 | 160 | 154 | 151 | 149 | 146 | 196 | 183 | 177 | 307 | 149 | 203 | 383 | 624 | 486 | 400 | 388 | 376 | 223 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | glassy | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | on | on | on | on | |
High Tide | 3:25AM1.35m | 5:46PM1.28m | 3:56AM1.35m | 6:25PM1.28m | 4:28AM1.35m | 7:03PM1.26m | ||||||||||||||||||
Low Tide | 10:33AM0.04m | 10:45PM0.87m | 11:07AM0.02m | 11:20PM0.88m | 11:42AM0.02m | 11:56PM0.89m | ||||||||||||||||||
 |  | | | |  | | |  | | | | | |  | | | | | | |  | | | |
 | 4:26 | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:24 |
 | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:47 | — | — | 6:47 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 20 | 22 | 24 | 24 | 23 | 20 | 19 | 19 | 19 | 22 | 23 | 23 | 21 | 21 | 21 | 20 | 21 | 21 | 22 | 22 | 22 | 21 | 21 | 20 |
21 | 23 | 25 | 24 | 21 | 15 | 16 | 18 | 18 | 22 | 22 | 22 | 20 | 20 | 20 | 20 | 21 | 20 | 21 | 21 | 22 | 21 | 21 | 20 | |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | ESE 10 | E 10 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | S 10 | S 10 | S 12 | SSW 13 | SSW 13 | SSW 12 | S 12 | SSW 14 | SSW 14 | SW 13 | SW 13 | SW 13 | SW 12 |
 kJ | 164 | 161 | 128 | 167 | 161 | 174 | 160 | 154 | 151 | 149 | 146 | 174 | 100 | 177 | 307 | 149 | 203 | 383 | 624 | 486 | 400 | 388 | 376 | 223 |
Swell 2 Height (m) Direction Period (s) | SSE 6 | S 6 | S 13 | S 12 | S 12 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | S 11 | SW 14 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 |
| kJ | 25 | 15 | 92 | 72 | 139 | 125 | 125 | 94 | 94 | 92 | 90 | 90 | 87 | 89 | 89 | 112 | 191 | 65 | 64 | 62 | 61 | 60 | 60 | 60 |
Swell 3 Height (m) Direction Period (s) | SW 6 | S 14 | S 6 | SSW 14 | SSW 14 | SE 12 | SSE 12 | SE 12 | SE 12 | SSE 5 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SW 16 | E 10 | E 10 | SW 15 | SE 12 | SE 11 | SE 11 | SE 11 | SE 11 | SW 16 |
| kJ | 7 | 33 | 16 | 69 | 39 | 23 | 15 | 21 | 23 | 13 | 99 | 196 | 183 | 168 | 96 | 65 | 64 | 181 | 21 | 20 | 20 | 20 | 20 | 161 |
Wind waves Height (m) Direction Period (s) | SW 4 | — | — | SSW 3 | SSW 3 | SSW 6 | SSW 6 | SSW 6 | SSW 5 | SW 5 | SSW 5 | SW 4 | S 3 | S 3 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | SSE 5 | SSE 6 | SSE 6 | SSE 6 |
| kJ | 4 | — | — | 2 | 9 | 107 | 108 | 84 | 50 | 18 | 17 | 9 | 6 | 4 | 4 | 14 | 11 | 10 | 9 | 28 | 69 | 98 | 87 | 93 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 6 | 0 | 0 | 24 | 2825 | 567 | 87 | 73 | 75 | 43 | 24 | 24 | 127 | 24 | 87 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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