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Kuminatu surfForecast / Chiba / Japan
12 Day Weather and Surf, issued 8 pm Friday 14 Mar 2025 JST
Best Forecast Surf Conditions for Kuminatu this week:
The surf forecast for Kuminatu over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Mar 16) at 12PM. The primary swell is predicted to be 4.0m and 10s period with a secondary swell of 3.5m and 10s. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Kuminatu in the next 12 days are 4.0m 11s and forecast to arrive on Sunday (Mar 16) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 7s period and expected on Wednesday (Mar 19) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Sun 16th Mar) | 13ft (4.0m) 10s |
| Best Surf | 12PM (Sun 16th Mar) | 13ft (4.0m) 10s |
| Most Powerful | 3PM (Sun 16th Mar) | 13ft (4.0m) 11s |
Table - best surf conditions forecast for Kuminatu over the next 12 days.
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wed 26 | |||||||||||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 5 | 6 | 9 | 11 | 10 | 9 | 9 | 10 | 10 | 11 | 11 | 7 | 9 | 10 | 10 | 11 | 12 | 12 | 11 | 11 | 11 | 6 | 6 | 12 | 6 | 7 | 6 | 5 | 10 | 4 | 5 | 6 | 6 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 56 | 44 | 84 | 325 | 1391 | 3472 | 1224 | 1503 | 822 | 296 | 92 | 97 | 77 | 136 | 513 | 520 | 627 | 412 | 289 | 280 | 211 | 119 | 82 | 128 | 196 | 35 | 255 | 65 | 55 | 25 | 16 | 22 | 84 | 101 | 245 | 808 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross- on | off | cross- off | cross- off | off | cross- off | cross | cross- off | cross- on | cross- off | off | off | cross- off | cross | cross- on | off | glass | glass | glass | cross- on | cross- on | cross | cross | cross | off | cross- on | cross | cross | cross- on | cross | cross | cross |
High Tide / height (m) | 5:20AM 1.31 | 5:24PM 1.36 | 5:36AM 1.32 | 5:57PM 1.33 | 5:53AM 1.32 | 6:31PM 1.28 | 6:11AM 1.31 | 7:06PM 1.20 | 6:29AM 1.29 | 7:44PM 1.11 | 6:49AM 1.26 | 8:32PM 1.00 | 7:10AM 1.21 | 9:51PM 0.91 | 7:32AM 1.15 | 8:00AM 1.08 | 2:57AM 1.02 | 9:48AM 1.01 | 3:01AM 1.11 | 12:40PM 1.05 | 3:18AM 1.19 | 1:58PM 1.18 | ||||||||||||||
Low Tide / height (m) | 11:09PM 0.18 | 11:17AM 0.31 | 11:34PM 0.25 | 11:43AM 0.22 | 11:59PM 0.34 | 12:09PM 0.16 | 12:22AM 0.43 | 12:37PM 0.14 | 12:44AM 0.53 | 1:08PM 0.14 | 1:04AM 0.63 | 1:45PM 0.18 | 1:22AM 0.73 | 2:31PM 0.24 | 1:34AM 0.83 | 3:40PM 0.30 | 5:25PM 0.32 | 6:37AM 0.99 | 7:01PM 0.26 | 8:13AM 0.88 | 8:04PM 0.17 | 8:46AM 0.74 | ||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wed 26 | |||||||||||||||||||||||||
| Sunrise | - | 5:50 | - | - | 5:48 | - | - | 5:48 | - | - | 5:47 | - | - | 5:45 | - | - | 5:43 | - | - | 5:41 | - | - | 5:41 | - | - | 5:39 | - | - | 5:37 | - | - | 5:37 | - | - | 5:35 | - |
| Sunset | - | - | 5:45 | - | - | 5:45 | - | - | 5:46 | - | - | 5:47 | - | - | 5:49 | - | - | 5:49 | - | - | 5:50 | - | - | 5:51 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:53 |
 |  |  |  |  | | |  |  |  | |  | | | | | | | | | |  | | | | | | | | | | |  | | | | |
Rain (mm) | - | 3 | 8 | 7 | 17 | 2 | - | - | 1 | 1 | 1 | - | 6 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 14 | 9 | 10 | 12 | 13 | 13 | 13 | 11 | 10 | 8 | 10 | 10 | 10 | 5 | 8 | 7 | 8 | 9 | 8 | 10 | 11 | 10 | 12 | 13 | 13 | 16 | 16 | 15 | 17 | 16 | 15 | 18 | 18 | 17 | 19 | 19 |
| Feels °C (?) | 10 | 1 | 4 | 7 | 8 | 7 | 5 | 3 | 4 | 2 | 7 | 7 | 1 | -3 | 1 | 3 | 4 | 5 | 5 | 8 | 9 | 8 | 8 | 9 | 9 | 9 | 9 | 10 | 15 | 13 | 14 | 14 | 13 | 12 | 13 | 13 |
Short Range Forecast: Heavy rain (total 38mm), heaviest during Sun morning. Very mild (max 14°C on Fri night, min 7°C on Sat afternoon). Winds increasing (light winds from the WSW on Fri night, near gales from the WSW by Sun night). | Days 3-6 Weather Summary Light rain (total 9mm), mostly falling on Tue night. Very mild (max 10°C on Tue morning, min 4°C on Wed night). Mainly strong winds. | Days 6-9 Weather Summary Mostly dry. Very mild (max 16°C on Sun morning, min 8°C on Thu night). Winds increasing (calm on Fri morning, fresh winds from the SW by Sun morning). | Long Range Forecast: Mostly dry. Very mild (max 19°C on Wed morning, min 13°C on Sun night). Winds increasing (light winds from the NW on Mon morning, fresh winds from the SW by Wed morning). | |||||||||||||||||||||||||||||||||
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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.
Information about the Kuminatu Surf forecast
The above surf forecast table for Kuminatu provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Kuminatu can be found by selecting the local surf guide option on the grey menu. Our Kuminatu 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 (Kuminatu) 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 Kuminatu 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.
Kuminatu is 6 km (4 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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