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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm Friday 01 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
20.6° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 6PM is: 3.0m 9s primary swell from a South-southwest direction and 1.5m 9s secondary swell from a East-southeast direction, 0.1m 12s secondary swell from a Northeast direction (forecast issued at 02:00pm May 01). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 May) | - | - |
| Afternoon (01 May) | 13ft (4.0m) | 9s |
| Evening (01 May) | 11ft (3.5m) | 9s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 9mm), mostly falling on Fri afternoon. Warm (max 22°C on Sun night, min 15°C on Fri night). Winds increasing (calm on Sat afternoon, near gales from the SW by Mon morning). | ||||||||||||||||||||||||
Fri 1 | Saturday 2 | Sunday 3 | Mon 4 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SSE 9 | S 9 | SSW 9 | SW 9 | SW 9 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 9 | ESE 9 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 8 | SSW 9 | |
2032 | 2308 | 1530 | 1777 | 2112 | 2081 | 1160 | 836 | 451 | 273 | 200 | 162 | 124 | 142 | 129 | 126 | 100 | 100 | 114 | 218 | 344 | 597 | 1437 | 2746 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | cross-on | on | glassy | glassy | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 5:00PM1.30m | 4:02AM1.36m | 5:38PM1.29m | 4:25AM1.36m | 6:16PM1.26m | 4:50AM1.35m | ||||||||||||||||||
Low Tide | 10:19AM0.08m | 10:28PM0.63m | 10:48AM0.01m | 10:58PM0.68m | 11:18AM-0.02m | 11:28PM0.73m | ||||||||||||||||||
 |  |  |  | | | | | | | |  | | |  | | |  | | | |  |  | | |
 | — | — | — | — | — | 4:48 | — | — | — | — | — | — | — | 4:47 | — | — | — | — | — | — | — | 4:46 | — | — |
 | — | — | 6:23 | — | — | — | — | — | — | — | 6:23 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | 6:25 |
20 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | |
Temp °C | 19 | 20 | 18 | 17 | 15 | 15 | 16 | 19 | 19 | 20 | 18 | 18 | 17 | 17 | 18 | 20 | 21 | 21 | 19 | 19 | 19 | 20 | 22 | 22 |
13 | 15 | 11 | 8 | 6 | 8 | 13 | 16 | 16 | 19 | 18 | 17 | 16 | 16 | 18 | 20 | 18 | 17 | 14 | 14 | 13 | 14 | 15 | 15 | |
Swell 1 Height (m) Direction Period (s) | NE 13 | NE 13 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 9 | SW 8 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 |
 kJ | 26 | 6 | 370 | 270 | 172 | 130 | 1160 | 836 | 451 | 273 | 200 | 162 | 118 | 142 | 129 | 126 | 100 | 100 | 100 | 69 | 69 | 69 | 50 | 55 |
Swell 2 Height (m) Direction Period (s) | NE 10 | NE 10 | NE 12 | NE 12 | NE 12 | NE 12 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SE 9 | ESE 9 | ESE 9 | SW 8 | SW 7 | E 4 | ENE 4 | ENE 4 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | — |
| kJ | 15 | 4 | 6 | 6 | 6 | 5 | 90 | 94 | 124 | 113 | 152 | 121 | 124 | 88 | 42 | 13 | 6 | 2 | 4 | 4 | 4 | 4 | 4 | — |
Swell 3 Height (m) Direction Period (s) | — | — | S 15 | — | — | — | NE 11 | S 8 | S 7 | NE 11 | NE 11 | S 7 | S 7 | NE 11 | S 7 | SW 7 | NE 10 | NE 10 | — | N 8 | — | — | — | — |
| kJ | — | — | 4 | — | — | — | 5 | 33 | 48 | 5 | 5 | 39 | 25 | 5 | 14 | 25 | 4 | 4 | — | 1 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 9 | S 9 | SSW 9 | SW 9 | SW 9 | SW 10 | — | — | — | S 7 | — | — | — | ENE 3 | E 4 | SW 7 | SSW 7 | SSW 4 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 8 | SSW 9 |
| kJ | 2032 | 2308 | 1530 | 1777 | 2112 | 2081 | — | — | — | 46 | — | — | — | 1 | 16 | 75 | 40 | 54 | 114 | 218 | 344 | 597 | 1437 | 2746 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 43 | 75 | 537 | 537 | 537 | 519 | 0 | 0 | 87 | 24 | 0 | 0 | 0 | 35 | 40 | 24 | 30 | 1002 | 1002 | 889 | 804 | 540 | 519 | 519 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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