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Surf Forecasts:
Kuminatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm Wednesday 15 Apr 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
15.9° C
(Which is 2.3°C colder than average for this time of year)How big are the waves at Kuminatu today?
The current surf forecast for Kuminatu at 7PM is: 2.0m 15s primary swell from a South-southeast direction and 0.1m 15s secondary swell from a East direction, 1.2m 9s secondary swell from a Southeast direction (forecast issued at 02:00pm April 15). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Apr) | - | - |
| Afternoon (15 Apr) | 5.5ft (1.7m) | 16s |
| Evening (15 Apr) | 6ft (1.8m) | 15s |
Table - waves today at Kuminatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||||||||
| 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) (?) | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 16 | 16 | 15 | 15 | 9 | 15 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 15 | 16 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1230 | 1307 | 1885 | 1356 | 1319 | 1435 | 969 | 1750 | 803 | 1572 | 1292 | 1497 | 1358 | 1376 | 1472 | 1396 | 1220 | 1187 | 1171 | 1171 | 1358 | 1631 | 1956 | 1907 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | on | on | 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- off | cross | cross | cross | on | on | cross- on | on |
High Tide / height (m) | 3:10PM 1.28 | 3:28AM 1.33 | 3:59PM 1.37 | 3:54AM 1.38 | 4:48PM 1.42 | 4:21AM 1.42 | ||||||||||||||||||
Low Tide / height (m) | 9:10AM 0.37 | 9:22PM 0.32 | 9:43AM 0.19 | 10:00PM 0.38 | 10:19AM 0.01 | 10:37PM 0.47 | ||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:05 | - | - | - | - | - | - | - | 5:05 | - | - | - | - | - | - | - | 5:03 | - |
| Sunset | - | - | 6:09 | - | - | - | - | - | - | - | 6:10 | - | - | - | - | - | - | - | 6:12 | - | - | - | - | - |
 |  | |  |  | | | |  | | |  | |  | | |  | | |  | | | | | |
Rain (mm) | - | 1 | 2 | 4 | 7 | 9 | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 19 | 17 | 16 | 16 | 16 | 15 | 15 | 16 | 16 | 12 | 12 | 10 | 9 | 10 | 11 | 12 | 13 | 13 | 14 | 14 | 14 | 14 | 16 |
| Feels °C (?) | 18 | 18 | 16 | 16 | 16 | 15 | 10 | 9 | 8 | 8 | 3 | 3 | 2 | 2 | 4 | 5 | 7 | 9 | 10 | 12 | 11 | 12 | 13 | 14 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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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