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Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm Thursday 04 Dec 2025 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
21.9° C
(Which is 1.8°C warmer than normal for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 8PM is: 0.7m 13s primary swell from a Northeast direction and 0.7m 9s secondary swell from a Southwest direction (forecast issued at 02:00pm December 04). An open ocean swell of 1.5m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 Dec) | - | - |
| Afternoon (04 Dec) | 3.5ft (1.0m) | 10s |
| Evening (04 Dec) | 2.5ft (0.7m) | 13s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 04 | Friday 05 | Saturday 06 | Sunday 07 | |||||||||||||||||||||
| 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 13 | 13 | 13 | 8 | 8 | 13 | 13 | 12 | 8 | 12 | 12 | 12 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 245 | 184 | 202 | 172 | 136 | 461 | 543 | 79 | 78 | 77 | 147 | 77 | 74 | 74 | 154 | 150 | 109 | 109 | 113 | 115 | 61 | 63 | 63 | 63 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- on | cross- on | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | glass | cross- on | cross- on | cross- off | cross | cross | cross | cross- off |
High Tide / height (m) | 2:59PM 1.56 | 5:25AM 1.50 | 3:39PM 1.60 | 6:16AM 1.50 | 4:21PM 1.61 | 7:05AM 1.46 | ||||||||||||||||||
Low Tide / height (m) | 9:39AM 0.95 | 10:10PM -0.15 | 10:25AM 1.00 | 10:56PM -0.21 | 11:08AM 1.03 | 11:42PM -0.19 | ||||||||||||||||||
Thursday 04 | Friday 05 | Saturday 06 | Sunday 07 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:33 |
| Sunset | - | 4:27 | - | - | - | - | - | - | - | 4:27 | - | - | - | - | - | - | - | 4:27 | - | - | - | - | - | - |
 |  |  |  |  | | | | | | | | | | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 9 | 10 | 9 | 10 | 9 | 9 | 9 | 10 | 11 | 12 | 10 | 10 | 9 | 9 | 8 | 9 | 12 | 13 | 13 | 12 | 13 | 12 | 12 | 12 |
| Feels °C (?) | 4 | 6 | 4 | 7 | 4 | 1 | 1 | 2 | 4 | 6 | 4 | 5 | 4 | 5 | 3 | 4 | 9 | 10 | 10 | 9 | 8 | 6 | 6 | 8 |
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Ocean Swells (m)- Wind Speed (km/h)
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