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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
16 Day Weather and Surf, issued 2 pm Tuesday 26 May 2026 JSTForecast update in hr min s Forecast update imminent
Amatu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Amatu sea temperature is
21.1° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Amatu this week:
The surf forecast for Amatu over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (May 27) at 3AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.7m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Amatu in the next 16 days are 2.0m 15s and forecast to arrive on Tuesday (Jun 02) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Saturday (May 30) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 27th May) | 4.5ft (1.4m) 8s |
| Best Surf | 3PM (Tue 2nd Jun) | 5.5ft (1.7m) 14s |
| Most Powerful | 3AM (Tue 2nd Jun) | 6.5ft (2.0m) 15s |
Table - best surf conditions forecast for Amatu over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 26°C on Fri morning, min 20°C on Tue night). Winds increasing (light winds from the E on Tue night, fresh winds from the SW by Thu night). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Fri afternoon, min 19°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tue 26 | Wednesday 27 | Thursday 28 | Friday 29 | Saturday 30 | Sunday 31 | Monday 1 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SSW 7 | SSW 8 | SW 8 | SSW 8 | ESE 11 | ESE 11 | E 11 | S 13 | S 12 | SSW 14 | S 13 | S 14 | S 15 | SSW 14 | |
188 | 170 | 273 | 280 | 171 | 261 | 206 | 545 | 464 | 669 | 248 | 156 | 153 | 181 | 171 | 196 | 195 | 875 | 918 | 1597 | 1204 | |
Wind (km/h) | |||||||||||||||||||||
cross | cross-on | cross-off | cross-on | cross-on | on | on | cross | cross | cross | cross-off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 1:18AM1.28m | 2:46PM1.14m | 1:53AM1.31m | 3:39PM1.20m | 2:25AM1.33m | 4:25PM1.25m | 2:55AM1.34m | 5:06PM1.28m | 3:25AM1.35m | 5:46PM1.28m | 3:56AM1.35m | 6:25PM1.28m | 4:28AM1.35m | ||||||||
Low Tide | 7:02PM0.68m | 8:15AM0.41m | 7:57PM0.74m | 8:52AM0.28m | 8:46PM0.79m | 9:27AM0.17m | 9:29PM0.82m | 10:00AM0.09m | 10:09PM0.85m | 10:33AM0.04m | 10:45PM0.87m | 11:07AM0.02m | 11:20PM0.88m | 11:42AM0.02m | |||||||
 |  |  |  | | | | | | |  | | | | | | | | |  | | |
 | — | — | 4:28 | — | — | 4:28 | — | — | 4:26 | — | — | 4:26 | — | — | 4:26 | — | — | 4:26 | — | — | 4:26 |
 | 6:43 | — | — | 6:44 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:46 | — | — | 6:46 | — | 6:47 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 20 | 24 | 24 | 22 | 23 | 22 | 22 | 26 | 26 | 22 | 24 | 24 | 21 | 24 | 23 | 20 | 22 | 21 | 21 | 23 |
21 | 21 | 25 | 25 | 22 | 24 | 24 | 22 | 26 | 23 | 22 | 21 | 21 | 20 | 24 | 22 | 20 | 20 | 19 | 21 | 22 | |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | SSW 8 | ESE 11 | ESE 11 | E 11 | E 10 | S 12 | S 12 | S 13 | SSW 16 | S 15 | SSW 14 |
 kJ | 188 | 170 | 273 | 280 | 171 | 261 | 206 | 169 | 147 | 115 | 248 | 156 | 153 | 181 | 128 | 196 | 174 | 875 | 240 | 1597 | 1204 |
Swell 2 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 11 | NE 11 | NE 12 | ESE 11 | S 7 | SW 7 | SE 6 | S 13 | E 10 | SSW 14 | E 10 | E 10 | E 9 | E 9 |
| kJ | 180 | 143 | 56 | 42 | 42 | 42 | 42 | 44 | 33 | 21 | 161 | 22 | 19 | 37 | 171 | 128 | 195 | 68 | 65 | 62 | 60 |
Swell 3 Height (m) Direction Period (s) | S 6 | ESE 14 | ESE 14 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | — | S 15 | S 15 | NE 11 | SW 7 | NE 11 | SSW 16 | SE 6 | S 16 | E 10 | SE 12 | SE 11 | SE 11 | SE 12 |
| kJ | 3 | 21 | 19 | 19 | 18 | 17 | 31 | — | 4 | 4 | 19 | 34 | 5 | 47 | 38 | 127 | 96 | 21 | 20 | 19 | 21 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSW 4 | S 4 | S 6 | SSW 7 | SSW 8 | SW 8 | NE 5 | ENE 5 | SE 6 | — | SE 6 | SE 5 | — | — | S 14 | S 12 | SE 6 |
| kJ | — | — | — | — | 18 | 19 | 50 | 545 | 464 | 669 | 29 | 24 | 64 | — | 38 | 35 | — | — | 918 | 711 | 88 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 40 | 24 | 0 | 24 | 119 | 24 | 24 | 75 | 30 | 35 | 52 | 0 | 24 | 24 | 24 | 24 | 24 | 30 | 87 | 24 | 24 |
Best forecast wave conditions in Chiba | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 16 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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