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Surf Forecasts:
Onjuku surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 pm Sunday 01 Mar 2026 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
15.0° C
(Which is 1.1°C colder than average for this time of year)How big are the waves at Onjuku today?
The current surf forecast for Onjuku at 12AM is: 0.9m 11s primary swell from a East-northeast direction and 0.6m 8s secondary swell from a Southeast direction (forecast issued at 08:00pm March 01). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (02 Mar) | 3ft (0.9m) | 14s |
| Afternoon (02 Mar) | 4ft (1.2m) | 14s |
| Evening (02 Mar) | 4ft (1.2m) | 14s |
Table - waves today at Onjuku. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sun 01 | Monday 02 | Tuesday 03 | Wednesday 04 | |||||||||||||||||||||
| 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) (?) | 11 | 11 | 11 | 11 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 7 | 14 | 14 | 8 | 9 | 14 | 9 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 256 | 214 | 183 | 145 | 407 | 336 | 415 | 490 | 490 | 490 | 482 | 482 | 1028 | 1535 | 1858 | 563 | 1744 | 2197 | 1075 | 2043 | 1660 | 1065 | 867 | 905 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | off | off | off | cross- off | cross- off |
High Tide / height (m) | 4:45AM 1.33 | 3:30PM 1.42 | 5:02AM 1.36 | 4:17PM 1.46 | 5:19AM 1.38 | |||||||||||||||||||
Low Tide / height (m) | 9:47PM 0.14 | 9:59AM 0.82 | 10:22PM 0.16 | 10:31AM 0.67 | 10:54PM 0.21 | 11:02AM 0.54 | ||||||||||||||||||
Sun 01 | Monday 02 | Tuesday 03 | Wednesday 04 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:05 | - | - |
| Sunset | - | - | - | - | - | - | - | 5:34 | - | - | - | - | - | - | - | 5:34 | - | - | - | - | - | - | - | 5:35 |
 | | | |  |  |  | | | | |  | | | | | | |  |  | | |  | | |
Rain (mm) | - | - | - | - | 1 | 2 | - | - | - | - | - | - | - | 2 | 3 | 4 | 5 | 4 | 8 | 13 | 6 | - | - | - |
| Temp. °C | 13 | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 10 | 11 | 11 | 11 | 10 | 9 | 9 | 10 | 12 | 13 | 5 | 5 | 6 | 9 | 12 |
| Feels °C (?) | 9 | 9 | 10 | 11 | 10 | 7 | 7 | 7 | 6 | 4 | 5 | 5 | 4 | 2 | 1 | 1 | 3 | 6 | 9 | -6 | -7 | -3 | 1 | 4 |
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Onjuku surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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