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Katagai surfForecast / Chiba / Japan
12 Day Weather and Surf, issued 2 pm Wednesday 26 Nov 2025 JSTForecast update in hr min s Forecast update imminent
Katagai surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Katagai sea temperature is
16.1° C
(Which is 4.3°C colder than average for this time of year)Best Forecast Surf Conditions for Katagai this week:
The surf forecast for Katagai over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Nov 28) at 12PM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.4m and 11s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Katagai in the next 12 days are 0.7m 14s and forecast to arrive on Wednesday (Dec 03) at 6AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Tuesday (Dec 02) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Fri 28th Nov) | 3.5ft (1.0m) 8s |
| Best Surf | 9PM (Tue 2nd Dec) | 2ft (0.6m) 14s |
| Most Powerful | 6AM (Wed 3rd Dec) | 2.5ft (0.7m) 14s |
Table - best surf conditions forecast for Katagai over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Light rain (total 3mm), mostly falling on Thu night. Very mild (max 18°C on Fri afternoon, min 10°C on Fri night). Winds increasing (light winds from the SSE on Thu morning, fresh winds from the WSW by Fri morning). | Days 3-6 Weather Summary Mostly dry. Warm (max 20°C on Mon morning, min 12°C on Sat night). Winds increasing (calm on Sun morning, fresh winds from the SSW by Mon morning). | ||||||||||||||||||||||
Wed 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 01 | Tuesday 02 | |||||||||||||||||
| 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 (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 8 | 6 | 9 | 7 | 9 | 7 | 9 | 12 | 11 | 12 | 14 | 13 | 13 | 15 | 14 | 6 | 6 | 14 | 13 | 14 | 14 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 47 | 49 | 42 | 54 | 74 | 147 | 73 | 82 | 172 | 44 | 37 | 85 | 80 | 104 | 89 | 95 | 167 | 97 | 127 | 131 | 178 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | on | cross- on | cross | cross- off | off | cross- off | cross- off | cross- on | cross | off | glass | cross | cross | cross | cross | cross | off | cross- off | off | ||
High Tide / height (m) | 6:08PM 1.26 | 9:52AM 1.17 | 7:01PM 1.15 | 10:44AM 1.19 | 8:38PM 1.04 | 11:26AM 1.21 | 11:06PM 1.00 | 12:00PM 1.25 | 1:00AM 1.07 | 12:32PM 1.29 | 2:19AM 1.18 | 1:04PM 1.35 | 3:21AM 1.28 | ||||||||||
Low Tide / height (m) | 2:01AM 0.33 | 2:37PM 1.02 | 2:54AM 0.42 | 4:24PM 0.94 | 3:57AM 0.53 | 5:49PM 0.79 | 5:07AM 0.64 | 6:46PM 0.60 | 6:17AM 0.75 | 7:32PM 0.40 | 7:19AM 0.85 | 8:15PM 0.20 | 8:13AM 0.94 | ||||||||||
Wed 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 01 | Tuesday 02 | |||||||||||||||||
| Sunrise | - | - | 6:24 | - | - | 6:24 | - | - | 6:26 | - | - | 6:26 | - | - | 6:28 | - | - | 6:28 | - | - | 6:28 | ||
| Sunset | 4:25 | - | - | 4:25 | - | - | 4:25 | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 | - | - | 4:24 | - | - | ||
 |  | |  |  | | | | | |  | | | | | | | | | | | |||
Rain (mm) | - | - | - | - | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Temp. °C | 17 | 14 | 16 | 17 | 17 | 17 | 18 | 13 | 13 | 13 | 15 | 14 | 15 | 16 | 20 | 20 | 17 | 16 | 17 | 14 | 13 | ||
| Feels °C (?) | 12 | 9 | 12 | 13 | 11 | 10 | 12 | 9 | 9 | 9 | 13 | 13 | 13 | 13 | 14 | 15 | 16 | 12 | 16 | 13 | 4 | ||
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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 Katagai 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 Katagai Surf forecast
The above surf forecast table for Katagai provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Katagai can be found by selecting the local surf guide option on the grey menu. Our Katagai 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 (Katagai) 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 Katagai 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.
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