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Surf Forecasts:
Matsube Bay surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Saturday 21 Mar 2026 JSTForecast update in hr min s Forecast update imminent
Matsube Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Matsube Bay sea temperature is
15.3° C
(Which is 1.7°C colder than average for this time of year)How big are the waves at Matsube Bay today?
The current surf forecast for Matsube Bay at 1PM is: 1.0m 13s primary swell from a East-northeast direction and 0.9m 6s secondary swell from a Northeast direction (forecast issued at 08:00am March 21). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 3.5ft (1.0m) | 13s |
| Afternoon (21 Mar) | 3.5ft (1.1m) | 13s |
| Evening (21 Mar) | 3ft (0.9m) | 12s |
Table - waves today at Matsube Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| 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) (?) | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 396 | 326 | 317 | 402 | 307 | 245 | 172 | 167 | 164 | 125 | 123 | 123 | 78 | 78 | 75 | 73 | 145 | 353 | 270 | 358 | 492 | 589 | 632 | 491 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | off | cross | cross | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross- off | cross | glass | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 5:26AM 1.47 | 6:18PM 1.42 | 5:47AM 1.48 | 7:06PM 1.33 | 6:09AM 1.48 | 8:02PM 1.22 | ||||||||||||||||||
Low Tide / height (m) | 11:52AM 0.20 | 11:58PM 0.61 | 12:30PM 0.15 | 12:24AM 0.75 | 1:11PM 0.15 | 12:47AM 0.88 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| Sunrise | 5:41 | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:39 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:51 | - | - | - | - | - | - | - | 5:52 | - | - | - | - |
 | | | |  | |  |  |  | |  | |  | | | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | 1 | 2 | - | - | - | - | - | - | - | - | 2 | 4 | 4 | 3 | - | - | - |
| Temp. °C | 6 | 8 | 12 | 12 | 12 | 12 | 13 | 12 | 12 | 13 | 14 | 14 | 13 | 13 | 14 | 12 | 12 | 10 | 9 | 10 | 10 | 10 | 10 | 10 |
| Feels °C (?) | -3 | 0 | 6 | 6 | 7 | 7 | 9 | 8 | 9 | 11 | 9 | 8 | 9 | 10 | 10 | 8 | 9 | 9 | 6 | 7 | 6 | 5 | 6 | 4 |
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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 Matsube Bay 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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