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Surf Forecasts:
Matsube Bay surfForecast / Chiba / Japan
16 Day 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)Best Forecast Surf Conditions for Matsube Bay this week:
The surf forecast for Matsube Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Mar 23) at 9AM. The primary swell is predicted to be 2.0m and 7s period with a secondary swell of 1.3m and 6s. Another secondary swell of 0.7m and 7s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Matsube Bay in the next 16 days are 2.0m 9s and forecast to arrive on Tuesday (Mar 24) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 7s period and expected on Tuesday (Mar 24) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Mon 23rd Mar) | 6.5ft (2.0m) 7s |
| Best Surf | 9AM (Mon 23rd Mar) | 6.5ft (2.0m) 7s |
| Most Powerful | 12AM (Tue 24th Mar) | 6.5ft (2.0m) 9s |
Table - best surf conditions forecast for Matsube Bay over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Moderate rain (total 16mm), heaviest on Mon morning. Very mild (max 14°C on Sun morning, min 8°C on Sat morning). Wind will be generally light. | Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Wed afternoon. Very mild (max 15°C on Tue morning, min 9°C on Wed night). Winds increasing (light winds from the NNW on Wed night, fresh winds from the NNE by Thu night). | ||||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 12 | 12 | 12 | 12 | 7 | 8 | 9 | 9 | 9 | 8 | 10 | 10 | 6 | 10 | 7 | 7 | 7 | 8 | 8 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 326 | 402 | 172 | 125 | 123 | 75 | 353 | 358 | 632 | 314 | 220 | 93 | 240 | 240 | 126 | 137 | 320 | 243 | 349 | 306 | 237 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross- on | cross | cross | cross | glass | cross- off | cross- off | cross- off | on | cross- on | cross- on | on | cross- off | cross- off | cross | cross- off | cross- off | cross- on | cross |
High Tide / height (m) | 6:18PM 1.42 | 5:47AM 1.48 | 7:06PM 1.33 | 6:09AM 1.48 | 8:02PM 1.22 | 6:33AM 1.46 | 9:18PM 1.11 | 6:58AM 1.41 | 7:26AM 1.33 | 8:07AM 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 | 2:00PM 0.20 | 1:00AM 0.99 | 3:04PM 0.28 | 4:36PM 0.36 | 6:27PM 0.38 | ||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||
| Sunrise | 5:41 | - | - | 5:41 | - | - | 5:39 | - | - | 5:37 | - | - | 5:35 | - | - | 5:35 | - | - | 5:33 | - | - |
| Sunset | - | 5:50 | - | - | 5:51 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:53 | - | - | 5:54 | - |
 | |  |  |  |  |  | |  | | | |  | |  | | |  | | | | |
Rain (mm) | - | - | 3 | - | - | - | 6 | 7 | - | - | - | - | 2 | 6 | 1 | - | 1 | - | - | - | - |
| Temp. °C | 12 | 12 | 13 | 14 | 14 | 14 | 10 | 10 | 10 | 15 | 15 | 13 | 11 | 13 | 10 | 13 | 13 | 13 | 15 | 14 | 13 |
| Feels °C (?) | 6 | 6 | 9 | 9 | 8 | 10 | 9 | 7 | 5 | 10 | 11 | 9 | 7 | 11 | 7 | 11 | 11 | 10 | 10 | 9 | 10 |
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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.
Information about the Matsube Bay Surf forecast
The above surf forecast table for Matsube Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Matsube Bay can be found by selecting the local surf guide option on the grey menu. Our Matsube Bay surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Matsube Bay) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Matsube Bay may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Matsube Bay is 2 km (1 miles) from Katsuura. If you plan a holiday in Chiba, look for hotels and other accommodation in Katsuura. Katsuura has rooms for a wide range of budgets as well as car hire and transport links.
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