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Kuminatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Saturday 28 Feb 2026 JSTForecast update in hr min s Forecast update imminent
Kuminatu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kuminatu sea temperature is
14.7° C
(Which is 1.8°C colder than average for this time of year)How big are the waves at Kuminatu today?
The current surf forecast for Kuminatu at 5PM is: 1.3m 12s primary swell from a East-northeast direction and 0.6m 8s secondary swell from a Southeast direction (forecast issued at 08:00am February 28). The wind direction is predicted to be offshore and the swell rating is 3.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Feb) | 3ft (0.9m) | 13s |
| Afternoon (28 Feb) | 4.5ft (1.3m) | 12s |
| Evening (28 Feb) | 4.5ft (1.3m) | 9s |
Table - waves today at Kuminatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 28 | Sunday 01 | Monday 02 | Tue 03 | |||||||||||||||||||||
| 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 | 6 PM | 9 PM | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 13 | 13 | 12 | 12 | 9 | 9 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 14 | 14 | 13 | 14 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 322 | 246 | 235 | 493 | 469 | 267 | 339 | 409 | 352 | 305 | 305 | 238 | 196 | 143 | 103 | 143 | 121 | 284 | 323 | 352 | 418 | 418 | 424 | 424 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | off | cross- off | off | off | cross- off | cross- off | cross | on | on | on | cross- on | cross | cross- off | cross- off | cross | cross | cross | cross | cross | cross |
High Tide / height (m) | 4:05AM 1.17 | 1:45PM 1.20 | 4:22AM 1.23 | 2:54PM 1.30 | 4:44AM 1.28 | 3:47PM 1.39 | ||||||||||||||||||
Low Tide / height (m) | 9:02AM 0.95 | 9:08PM 0.06 | 9:39AM 0.81 | 9:53PM 0.02 | 10:13AM 0.66 | 10:31PM 0.03 | ||||||||||||||||||
Saturday 28 | Sunday 01 | Monday 02 | Tue 03 | |||||||||||||||||||||
| Sunrise | - | 6:11 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - |
| Sunset | - | - | - | 5:31 | - | - | - | - | - | - | - | 5:32 | - | - | - | - | - | - | - | 5:34 | - | - | - | - |
 |  |  |  |  | | | | | | | |  | | | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - |
| Temp. °C | 11 | 12 | 16 | 17 | 15 | 12 | 10 | 9 | 9 | 10 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 10 |
| Feels °C (?) | 9 | 9 | 13 | 14 | 9 | 7 | 4 | 5 | 4 | 5 | 10 | 10 | 9 | 10 | 11 | 12 | 11 | 7 | 7 | 6 | 6 | 6 | 7 | 5 |
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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 Kuminatu 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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