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Amatu surfForecast / Chiba / Japan
12 Day Weather and Surf, issued 2 pm Saturday 07 Jun 2025 JST
Best Forecast Surf Conditions for Amatu this week:
The surf forecast for Amatu over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jun 08) at 9AM. The primary swell is predicted to be 2ft and 10s period with a secondary swell of 2ft and 7s. Another secondary swell of 3ft and 7s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Amatu in the next 12 days are 11ft 11s and forecast to arrive on Saturday (Jun 14) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 8ft 11s period and expected on Saturday (Jun 14) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Sun 8th Jun) | 2.5ft (0.7m) 10s |
| Best Surf | 3AM (Sat 14th Jun) | 13ft (4.0m) 8s |
| Most Powerful | 9AM (Sat 14th Jun) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for Amatu over the next 12 days.
Sat 07 | Sunday 08 | Monday 09 | Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | Monday 16 | Tuesday 17 | Wednesday 18 | Thu 19 | ||||||||||||||||||||||||
| 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 | Night | AM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (ft) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 6 | 7 | 6 | 7 | 7 | 7 | 9 | 9 | 9 | 15 | 14 | 6 | 11 | 11 | 10 | 9 | 9 | 8 | 5 | 8 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 79 | 67 | 100 | 64 | 63 | 74 | 76 | 74 | 120 | 64 | 218 | 393 | 224 | 127 | 27 | 46 | 45 | 156 | 264 | 570 | 2973 | 1358 | 490 | 272 | 184 | 125 | 93 | 865 | 421 | 533 | 550 | 533 | 551 | 467 | 332 | 221 |
Wind (mph) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- off | cross | cross- on | glass | on | on | cross- off | cross- on | cross | cross | cross | cross- off | cross | cross | cross | cross | cross- on | on | off | cross- off | on | cross | cross- off | cross- off | cross- off | on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross |
High Tide / height (ft) | 3:07PM 3.74 | 1:48AM 4.23 | 3:57PM 3.94 | 2:20AM 4.3 | 4:41PM 4.1 | 2:52AM 4.36 | 5:21PM 4.2 | 3:25AM 4.43 | 6:00PM 4.27 | 4:00AM 4.46 | 6:38PM 4.3 | 4:36AM 4.49 | 7:16PM 4.33 | 5:15AM 4.49 | 7:55PM 4.33 | 5:55AM 4.43 | 8:33PM 4.33 | 6:40AM 4.3 | 9:10PM 4.3 | 7:33AM 4.13 | 9:48PM 4.27 | 8:38AM 3.87 | 10:26PM 4.23 | 10:05AM 3.67 | ||||||||||||
Low Tide / height (ft) | 8:04PM 2.69 | 8:56AM 0.85 | 8:53PM 2.82 | 9:30AM 0.52 | 9:38PM 2.92 | 10:05AM 0.26 | 10:18PM 2.99 | 10:40AM 0.1 | 10:56PM 3.02 | 11:16AM 0.03 | 11:34PM 3.02 | 11:54AM 0 | 12:12AM 3.05 | 12:32PM 0.1 | 12:52AM 3.05 | 1:12PM 0.26 | 1:35AM 3.02 | 1:53PM 0.56 | 2:25AM 2.92 | 2:38PM 0.92 | 3:25AM 2.76 | 3:26PM 1.41 | 4:36AM 2.43 | |||||||||||||
Sat 07 | Sunday 08 | Monday 09 | Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | Monday 16 | Tuesday 17 | Wednesday 18 | Thu 19 | ||||||||||||||||||||||||
| Sunrise | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 |
| Sunset | 6:51 | - | - | 6:51 | - | - | 6:52 | - | - | 6:52 | - | - | 6:52 | - | - | 6:52 | - | - | 6:53 | - | - | 6:53 | - | - | 6:53 | - | - | 6:54 | - | - | 6:54 | - | - | 6:54 | - | - |
 |  | |  |  | | |  |  | |  | | | |  | | | |  | | | | | | | |  | |  | | | | | | | | |
Rain (in) | - | - | - | 0.0 | 0.0 | - | - | 0.7 | 0.6 | - | - | - | - | - | - | - | - | - | 0.2 | 1.6 | - | - | 0.5 | 2.3 | 0.0 | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °F | 72 | 70 | 75 | 70 | 66 | 72 | 70 | 68 | 68 | 73 | 75 | 75 | 73 | 72 | 73 | 73 | 70 | 70 | 70 | 72 | 73 | 77 | 72 | 72 | 73 | 70 | 77 | 75 | 72 | 77 | 77 | 75 | 81 | 79 | 75 | 75 |
| Feels °F (?) | 68 | 73 | 77 | 70 | 64 | 75 | 72 | 70 | 72 | 73 | 72 | 72 | 70 | 70 | 68 | 70 | 72 | 72 | 72 | 66 | 72 | 79 | 75 | 77 | 79 | 73 | 81 | 79 | 75 | 79 | 77 | 75 | 77 | 73 | 72 | 72 |
Short Range Forecast: Heavy rain (total 1.3in), heaviest during Mon night. Warm (max 75°F on Sun morning, min 64°F on Sun night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Warm (max 75°F on Tue night, min 68°F on Thu night). Winds decreasing (strong winds from the SW on Tue night, light winds from the ENE by Thu night). | Days 6-9 Weather Summary Heavy rain (total 4.7in), heaviest during Sun morning. Warm (max 77°F on Sat afternoon, min 68°F on Fri night). Winds decreasing (strong winds from the S on Fri night, calm by Sat night). | Long Range Forecast: Mostly dry. Warm (max 81°F on Wed morning, min 72°F on Mon night). Winds increasing (light winds from the S on Mon afternoon, strong winds from the SW by Thu afternoon). | |||||||||||||||||||||||||||||||||
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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 Amatu 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 Amatu Surf forecast
The above surf forecast table for Amatu provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Amatu can be found by selecting the local surf guide option on the grey menu. Our Amatu 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 (Amatu) 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 Amatu 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.
Amatu is 9 km (6 miles) from Kawaguchi. If you plan a holiday in Chiba, look for hotels and other accommodation in Kawaguchi. Kawaguchi has rooms for a wide range of budgets as well as car hire and transport links.
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