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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 am Saturday 21 Mar 2026 JSTForecast update in hr min s Forecast update imminent
Katahama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Katahama sea temperature is
14.9° C
(Which is 2.7°C colder than average for this time of year)How big are the waves at Katahama today?
The current surf forecast for Katahama at 3PM is: 0.3m 12s primary swell from a East direction and 0.7m 4s secondary swell from a East direction (forecast issued at 08:00am March 21). An open ocean swell of 0.5m 5s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 1ft (0.3m) | 12s |
| Afternoon (21 Mar) | 1ft (0.3m) | 12s |
| Evening (21 Mar) | 1ft (0.3m) | 13s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 27 | 27 | 27 | 28 | 28 | 28 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 16 | 31 | 59 | 134 | 204 | 314 | 327 | 270 | 256 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | glass | on | on | on | glass | off | off | cross- off | glass | cross- on | cross | cross- off | cross- off | cross- off | cross- off | off | glass | cross- on | cross- on | cross- on | glass | off | off |
High Tide / height (m) | 6:25AM 1.57 | 7:09PM 1.42 | 6:53AM 1.55 | 7:52PM 1.33 | 7:23AM 1.51 | 8:44PM 1.22 | ||||||||||||||||||
Low Tide / height (m) | 12:55PM 0.16 | 12:53AM 0.52 | 1:33PM 0.16 | 1:23AM 0.63 | 2:16PM 0.20 | 1:58AM 0.76 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| Sunrise | 5:50 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 5:58 | - | - | - | - | - | - | - | 5:59 | - | - | - | - | - | - | - | - | 6:00 | - | - | - |
 |  | | |  | | | | | |  | |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 7 | 10 | 12 | 12 | 13 | 12 | 11 | 10 | 9 | 11 | 13 | 13 | 13 | 13 | 12 | 11 | 11 | 11 | 12 | 13 | 13 | 12 | 11 | 10 |
| Feels °C (?) | 2 | 8 | 8 | 8 | 10 | 10 | 8 | 7 | 6 | 9 | 9 | 8 | 9 | 9 | 9 | 7 | 7 | 8 | 9 | 10 | 11 | 10 | 8 | 7 |
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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 Katahama 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.
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