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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 pm 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
15.8° 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 4AM is: 0.5m 8s primary swell from a Southeast direction (forecast issued at 08:00pm April 08). An open ocean swell of 0.6m 8s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 Apr) | 2ft (0.6m) | 8s |
| Afternoon (09 Apr) | 2ft (0.6m) | 8s |
| Evening (09 Apr) | 1.5ft (0.5m) | 8s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wed 08 | Thursday 09 | Friday 10 | Saturday 11 | |||||||||||||||||||||
| 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) (?) | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 10 | 5 | 6 | 6 | 10 | 9 | 9 | 9 | 9 | 11 | 11 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 19 | 29 | 28 | 34 | 45 | 53 | 51 | 40 | 31 | 31 | 27 | 74 | 165 | 39 | 33 | 32 | 29 | 32 | 46 | 46 | 46 | 57 | 56 | 56 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | glass | glass | glass | cross- off | glass | cross- on | cross | glass | cross- off | cross- off | cross | cross- on | off | glass | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 10:47PM 1.13 | 8:37AM 1.23 | 1:12AM 1.16 | 10:06AM 1.09 | 2:22AM 1.25 | 1:02PM 1.06 | ||||||||||||||||||
Low Tide / height (m) | 3:25PM 0.30 | 3:24AM 0.99 | 4:45PM 0.39 | 6:15AM 1.02 | 6:25PM 0.45 | 8:27AM 0.90 | ||||||||||||||||||
Wed 08 | Thursday 09 | Friday 10 | Saturday 11 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - |
| Sunset | 6:12 | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:14 | - | - | - | - | - | - | - |
 |  | | | | |  |  | |  |  |  |  | | | | |  |  | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 2 | 9 | 11 | 15 | 27 | 21 | 29 | 1 | - | - | - | - | - | - |
| Temp. °C | 13 | 13 | 12 | 12 | 11 | 13 | 15 | 16 | 16 | 14 | 13 | 13 | 14 | 14 | 15 | 17 | 17 | 17 | 17 | 17 | 17 | 20 | 22 | 21 |
| Feels °C (?) | 9 | 11 | 10 | 10 | 9 | 12 | 12 | 13 | 15 | 12 | 12 | 12 | 14 | 13 | 16 | 15 | 17 | 16 | 15 | 14 | 13 | 13 | 14 | 12 |
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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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