- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 2 am Friday 17 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
16.7° C
(Which is 2.1°C colder than average for this time of year)How big are the waves at Katahama today?
The current surf forecast for Katahama at 6AM is: 1.5m 14s primary swell from a South-southeast direction and 1.4m 7s secondary swell from a East direction (forecast issued at 02:00am April 17). An open ocean swell of 0.3m 12s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Apr) | 5ft (1.5m) | 14s |
| Afternoon (17 Apr) | 5ft (1.5m) | 14s |
| Evening (17 Apr) | 5.5ft (1.7m) | 16s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 17 | Saturday 18 | Sunday 19 | ||||||||||||||||||||||
| 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) (?) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1072 | 1010 | 899 | 886 | 886 | 874 | 969 | 1451 | 1586 | 1650 | 1788 | 1788 | 1982 | 1907 | 1785 | 1785 | 1737 | 1810 | 1785 | 1704 | 1728 | 1941 | 2298 | 2341 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | on | on | on | on | cross- on | cross- off | cross- off | glass | cross- on | cross- on | cross- on | glass | cross- off | cross- off | cross- off | cross | on | cross- on | cross- on | glass |
High Tide / height (m) | 4:55AM 1.54 | 5:47PM 1.46 | 5:19AM 1.57 | 6:22PM 1.45 | 5:45AM 1.59 | 7:01PM 1.42 | ||||||||||||||||||
Low Tide / height (m) | 11:03PM 0.54 | 11:28AM 0.15 | 11:28PM 0.59 | 11:57AM 0.09 | 11:55PM 0.65 | 12:30PM 0.06 | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | ||||||||||||||||||||||
| Sunrise | - | - | 5:13 | - | - | - | - | - | - | - | 5:11 | - | - | - | - | - | - | - | 5:11 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:21 | - |
 |  |  |  | |  | |  | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 13 | 12 | 13 | 14 | 15 | 14 | 14 | 14 | 13 | 13 | 15 | 17 | 17 | 17 | 16 | 15 | 15 | 15 | 17 | 19 | 19 | 18 | 17 |
| Feels °C (?) | 9 | 10 | 9 | 10 | 11 | 11 | 11 | 12 | 12 | 12 | 11 | 14 | 15 | 14 | 15 | 16 | 14 | 14 | 13 | 16 | 17 | 17 | 17 | 17 |
- Map Icons:
Break
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.
Nearest