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Onjuku surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 pm Thursday 27 Nov 2025 JSTForecast update in hr min s Forecast update imminent
Onjuku surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Onjuku sea temperature is
21.3° C
(Which is slightly warmer than usual)How big are the waves at Onjuku today?
The current surf forecast for Onjuku at 4AM is: 1.3m 6s primary swell from a South-southwest direction and 0.8m 8s secondary swell from a East-northeast direction, 0.4m 9s secondary swell from a Southeast direction (forecast issued at 08:00pm November 27). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Nov) | 6ft (1.8m) | 7s |
| Afternoon (28 Nov) | 3.5ft (1.1m) | 8s |
| Evening (28 Nov) | 2.5ft (0.7m) | 8s |
Table - waves today at Onjuku. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thu 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||||||||
| 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 | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 9 | 8 | 6 | 7 | 8 | 8 | 8 | 8 | 12 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 107 | 125 | 126 | 92 | 188 | 303 | 897 | 169 | 86 | 62 | 119 | 130 | 107 | 121 | 66 | 58 | 71 | 72 | 65 | 64 | 64 | 64 | 64 | 65 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- off | off | cross- off | off | off | off | off | cross- off | cross- off | cross- off | cross | cross | cross | cross- off | cross- off | cross- off | glass | glass |
High Tide / height (m) | 7:30PM 1.14 | 10:56AM 1.22 | 9:09PM 1.04 | 11:41AM 1.26 | 11:24PM 1.01 | 12:19PM 1.30 | ||||||||||||||||||
Low Tide / height (m) | 3:03PM 1.01 | 3:11AM 0.43 | 4:52PM 0.92 | 4:15AM 0.53 | 6:14PM 0.77 | 5:26AM 0.63 | ||||||||||||||||||
Thu 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:24 | - | - | - | - | - | - | - | 6:24 | - | - | - | - | - | - | - | 6:26 | - | - |
| Sunset | - | - | - | - | - | - | - | 4:27 | - | - | - | - | - | - | - | 4:27 | - | - | - | - | - | - | - | 4:25 |
 |  | |  |  |  | | | | | | | |  |  | | | |  | | | | | | |
Rain (mm) | - | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - |
| Temp. °C | 18 | 16 | 17 | 18 | 17 | 18 | 17 | 18 | 15 | 14 | 13 | 12 | 11 | 12 | 12 | 13 | 14 | 14 | 14 | 13 | 12 | 12 | 14 | 15 |
| Feels °C (?) | 14 | 11 | 11 | 11 | 10 | 10 | 12 | 13 | 11 | 10 | 7 | 7 | 6 | 7 | 8 | 9 | 11 | 12 | 13 | 10 | 10 | 10 | 12 | 14 |
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