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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 pm Sunday 12 Apr 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
15.8° 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 12AM is: 0.5m 10s primary swell from a Southeast direction and 0.7m 6s secondary swell from a East-southeast direction (forecast issued at 08:00pm April 12). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Apr) | 2ft (0.6m) | 11s |
| Afternoon (13 Apr) | 1.5ft (0.4m) | 10s |
| Evening (13 Apr) | 2.5ft (0.7m) | 11s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||||||||
| 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 | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 10 | 10 | 10 | 11 | 11 | 10 | 10 | 11 | 11 | 11 | 9 | 10 | 10 | 10 | 10 | 12 | 12 | 12 | 17 | 17 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 44 | 55 | 54 | 73 | 73 | 75 | 75 | 36 | 54 | 117 | 115 | 115 | 78 | 151 | 148 | 122 | 124 | 202 | 205 | 255 | 386 | 615 | 1529 | 1728 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | glass | glass | cross- off | glass | glass | cross- on | cross- on | cross- on | glass | glass | glass | glass | cross- on | on | on | on | cross- on | cross | cross- off | cross | cross | cross- on | on |
High Tide / height (m) | 3:29AM 1.38 | 3:23PM 1.25 | 3:53AM 1.42 | 4:04PM 1.33 | 4:14AM 1.46 | |||||||||||||||||||
Low Tide / height (m) | 8:52PM 0.43 | 9:46AM 0.61 | 9:36PM 0.43 | 10:13AM 0.48 | 10:10PM 0.45 | 10:38AM 0.36 | ||||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:18 | - | - | - | - | - | - | - | 5:18 | - | - | - | - | - | - | - | 5:16 | - | - | - |
| Sunset | 6:15 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - | 6:16 | - | - | - | - | - | - | - |
 |  | |  |  | | | |  |  | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 17 | 16 | 16 | 15 | 16 | 18 | 19 | 18 | 17 | 16 | 16 | 16 | 17 | 19 | 19 | 18 | 17 | 16 | 16 | 15 | 17 | 19 | 19 |
| Feels °C (?) | 16 | 18 | 17 | 16 | 15 | 17 | 17 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 18 | 16 | 16 | 16 | 15 | 15 | 13 | 15 | 17 | 17 |
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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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