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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 am Tuesday 14 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
16.2° C
(Which is 2.5°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: 0.9m 10s primary swell from a Southeast direction and 0.6m 4s secondary swell from a East direction (forecast issued at 08:00am April 14). An open ocean swell of 0.2m 4s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Apr) | 2.5ft (0.8m) | 10s |
| Afternoon (14 Apr) | 3ft (0.9m) | 10s |
| Evening (14 Apr) | 3ft (0.9m) | 12s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 14 | Wednesday 15 | Thursday 16 | Fri 17 | |||||||||||||||||||||
| 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) (?) | 9 | 10 | 10 | 10 | 10 | 12 | 12 | 12 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 15 | 14 | 15 | 16 | 16 | 15 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 78 | 133 | 148 | 148 | 151 | 202 | 205 | 212 | 399 | 601 | 1611 | 1184 | 1829 | 1571 | 1441 | 1297 | 1261 | 1350 | 1498 | 1460 | 1431 | 1258 | 1225 | 1102 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | on | on | cross- on | cross | cross | cross | cross | cross | cross | cross | cross- off | off | cross- off | glass | glass | cross- on | cross- on | on | cross | cross | cross |
High Tide / height (m) | 3:53AM 1.42 | 4:04PM 1.33 | 4:14AM 1.46 | 4:40PM 1.40 | 4:34AM 1.50 | 5:14PM 1.44 | ||||||||||||||||||
Low Tide / height (m) | 10:13AM 0.48 | 10:10PM 0.45 | 10:38AM 0.36 | 10:38PM 0.49 | 11:02AM 0.25 | 11:03PM 0.54 | ||||||||||||||||||
Tuesday 14 | Wednesday 15 | Thursday 16 | Fri 17 | |||||||||||||||||||||
| Sunrise | 5:18 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - | 5:15 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:16 | - | - | - | - | - | - | - | 6:17 | - | - | - | - | - | - | - | 6:19 | - | - | - |
 |  | |  | |  | |  |  | | | | | | | | | | | | |  | |  | |
Rain (mm) | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | 1 | 2 | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 18 | 19 | 19 | 18 | 18 | 17 | 16 | 16 | 16 | 17 | 18 | 17 | 15 | 15 | 16 | 15 | 18 | 19 | 18 | 17 | 14 | 13 | 12 |
| Feels °C (?) | 15 | 17 | 18 | 15 | 15 | 16 | 15 | 15 | 14 | 13 | 14 | 15 | 15 | 13 | 15 | 16 | 15 | 19 | 17 | 15 | 14 | 11 | 10 | 9 |
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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
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