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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 2 am Wednesday 08 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
15.4° C
(Which is 2.9°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: 0.7m 7s primary swell from a East direction (forecast issued at 02:00am April 08). An open ocean swell of 0.8m 9s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Apr) | 2.5ft (0.7m) | 7s |
| Afternoon (08 Apr) | 1.5ft (0.5m) | 7s |
| Evening (08 Apr) | 1.5ft (0.4m) | 9s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 08 | Thursday 09 | Friday 10 | ||||||||||||||||||||||
| 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) (?) | 9 | 9 | 8 | 7 | 7 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 5 | 5 | 6 | 10 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 74 | 97 | 28 | 43 | 48 | 23 | 19 | 19 | 49 | 47 | 45 | 53 | 51 | 50 | 61 | 31 | 36 | 80 | 162 | 38 | 33 | 30 | 32 | 31 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | glass | cross- on | cross- on | cross- on | cross- on | glass | off | off | glass | glass | cross | cross | cross | glass | cross- on | cross- on | cross- on | cross | cross- off | cross | cross- off | cross- off |
High Tide / height (m) | 9:12PM 1.20 | 7:54AM 1.36 | 10:47PM 1.13 | 8:37AM 1.23 | 1:12AM 1.16 | 10:06AM 1.09 | ||||||||||||||||||
Low Tide / height (m) | 2:11AM 0.88 | 3:25PM 0.30 | 3:24AM 0.99 | 4:45PM 0.39 | 6:15AM 1.02 | 6:25PM 0.45 | ||||||||||||||||||
Wednesday 08 | Thursday 09 | Friday 10 | ||||||||||||||||||||||
| Sunrise | - | - | 5:26 | - | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:12 | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:14 | - |
 |  |  | | | | | | | | | |  | | |  |  |  |  |  | | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 8 | 4 | 11 | 15 | 41 | 32 | 1 |
| Temp. °C | 8 | 8 | 8 | 11 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 15 | 16 | 17 | 16 | 16 | 15 | 15 | 15 | 16 | 16 | 17 | 18 | 17 |
| Feels °C (?) | 1 | 4 | 5 | 8 | 9 | 8 | 9 | 11 | 10 | 11 | 11 | 14 | 12 | 14 | 14 | 16 | 13 | 13 | 12 | 15 | 17 | 16 | 18 | 16 |
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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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