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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 2 am Tuesday 31 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
15.1° C
(Which is 2.8°C colder than average for this time of year)How big are the waves at Katahama today?
The current surf forecast for Katahama at 8AM is: 0.3m 9s primary swell from a East direction and 0.1m 10s secondary swell from a East direction (forecast issued at 02:00am March 31). An open ocean swell of 1.6m 6s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Mar) | 1ft (0.3m) | 9s |
| Afternoon (31 Mar) | 0.5ft (0.2m) | 10s |
| Evening (31 Mar) | 0.5ft (0.1m) | 16s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 31 | Wednesday 01 | Thursday 02 | ||||||||||||||||||||||
| 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 | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 6 | 6 | 9 | 10 | 10 | 11 | 16 | 16 | 16 | 16 | 8 | 15 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 74 | 98 | 132 | 15 | 12 | 8 | 0 | 10 | 10 | 10 | 10 | 221 | 9 | 135 | 131 | 117 | 102 | 64 | 53 | 49 | 41 | 42 | 53 | 50 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | on | cross- on | cross | cross | cross- off | cross- off | cross- off | off | cross- on | on | cross- on | cross | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross |
High Tide / height (m) | 4:28AM 1.43 | 4:27PM 1.38 | 4:47AM 1.47 | 5:01PM 1.43 | 5:06AM 1.51 | 5:34PM 1.46 | ||||||||||||||||||
Low Tide / height (m) | 10:12PM 0.33 | 10:40AM 0.48 | 10:41PM 0.35 | 11:03AM 0.37 | 11:06PM 0.39 | 11:27AM 0.26 | ||||||||||||||||||
Tuesday 31 | Wednesday 01 | Thursday 02 | ||||||||||||||||||||||
| Sunrise | - | - | 5:35 | - | - | - | - | - | - | - | 5:35 | - | - | - | - | - | - | - | 5:33 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:06 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:07 | - |
 | |  |  | | | | |  | |  |  | | | |  | | | |  | | |  | | |
Rain (mm) | 2 | 3 | 2 | 12 | 30 | 15 | 2 | 1 | - | - | - | - | - | 3 | 5 | 7 | 3 | 2 | 1 | 1 | - | - | - | - |
| Temp. °C | 17 | 17 | 15 | 14 | 16 | 18 | 18 | 18 | 15 | 14 | 13 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 16 | 15 | 13 | 12 |
| Feels °C (?) | 16 | 14 | 14 | 12 | 12 | 11 | 11 | 14 | 9 | 9 | 12 | 14 | 11 | 13 | 10 | 9 | 9 | 12 | 10 | 9 | 12 | 13 | 11 | 10 |
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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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