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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 2 pm Saturday 06 Dec 2025 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
17.8° C
(Which is 2.6°C colder than average for this time of year)How big are the waves at Katahama today?
The current surf forecast for Katahama at 9PM is: 0.4m 9s primary swell from a Southeast direction (forecast issued at 02:00pm December 06). An open ocean swell of 0.6m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Dec) | - | - |
| Afternoon (06 Dec) | 1.5ft (0.4m) | 9s |
| Evening (06 Dec) | 1.5ft (0.4m) | 9s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | |||||||||||||||||||||
| 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 | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 17 | 21 | 20 | 20 | 20 | 20 | 19 | 18 | 22 | 23 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 22 | 22 | 19 | 18 | 22 | 33 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off |
High Tide / height (m) | 5:10PM 1.63 | 7:10AM 1.50 | 5:48PM 1.61 | 7:50AM 1.50 | 6:31PM 1.55 | 8:34AM 1.49 | ||||||||||||||||||
Low Tide / height (m) | 11:41AM 1.01 | 12:18AM 0.09 | 12:22PM 1.00 | 12:56AM 0.12 | 1:10PM 0.99 | 1:37AM 0.18 | ||||||||||||||||||
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:41 | - | - | - | - | - | - | - | 6:41 |
| Sunset | - | 4:35 | - | - | - | - | - | - | - | 4:35 | - | - | - | - | - | - | - | 4:36 | - | - | - | - | - | - |
 | |  | | | | | | | | | | | | | |  | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 12 | 11 | 9 | 10 | 11 | 9 | 11 | 14 | 15 | 13 | 12 | 11 | 11 | 12 | 13 | 15 | 15 | 12 | 9 | 8 | 8 | 8 | 9 |
| Feels °C (?) | 9 | 8 | 6 | 3 | 5 | 5 | 2 | 3 | 6 | 7 | 7 | 6 | 6 | 5 | 6 | 6 | 8 | 7 | 4 | 1 | 2 | 4 | 4 | 6 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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