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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 2 am Monday 18 May 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
19.4° C
(Which is 1.6°C colder than average for this time of year)How big are the waves at Katahama today?
The current surf forecast for Katahama at 7AM is: 0.9m 9s primary swell from a East-southeast direction and 0.1m 7s secondary swell from a Southeast direction (forecast issued at 02:00am May 18). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 3ft (0.9m) | 8s |
| Afternoon (18 May) | 3ft (0.9m) | 8s |
| Evening (18 May) | 2.5ft (0.7m) | 9s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 23mm), heaviest during Wed afternoon. Warm (max 23°C on Tue morning, min 18°C on Wed afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 11 | SE 10 | ESE 10 | ESE 10 | SE 10 | ESE 10 | ESE 10 | ESE 10 | |
106 | 137 | 131 | 103 | 103 | 103 | 108 | 80 | 86 | 72 | 80 | 55 | 73 | 73 | 72 | 69 | 92 | 98 | 130 | 127 | 142 | 125 | 122 | 120 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | on | cross-on | cross-on | cross | cross-off | glassy | glassy | glassy | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross | cross | |
High Tide | 5:14AM1.60m | 6:59PM1.44m | 5:47AM1.59m | 7:42PM1.43m | 6:25AM1.53m | 8:30PM1.40m | ||||||||||||||||||
Low Tide | 11:35PM0.87m | 12:14PM0.05m | 00:11AM0.90m | 12:51PM0.07m | 00:54AM0.93m | 1:34PM0.12m | ||||||||||||||||||
 | |  | | | | | | | | | | | |  | | |  |  | |  | | |  | |
 | — | 4:41 | — | — | — | — | — | — | — | 4:41 | — | — | — | — | — | — | — | 4:41 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 5 | 3 | 3 | |
Temp °C | 21 | 20 | 19 | 22 | 22 | 22 | 22 | 21 | 20 | 19 | 19 | 21 | 23 | 22 | 21 | 20 | 20 | 19 | 20 | 20 | 19 | 18 | 18 | 18 |
21 | 20 | 19 | 22 | 19 | 20 | 21 | 21 | 20 | 19 | 19 | 20 | 21 | 20 | 20 | 20 | 21 | 20 | 21 | 21 | 21 | 17 | 17 | 18 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | E 8 | E 9 | E 9 | SE 11 | SE 10 | SE 11 | SE 10 | ESE 10 | ESE 10 | SE 10 | ESE 10 | ESE 10 | ESE 10 |
 kJ | 106 | 137 | 131 | 103 | 103 | 103 | 108 | 80 | 86 | 72 | 80 | 37 | 60 | 63 | 72 | 69 | 92 | 98 | 130 | 127 | 142 | 125 | 122 | 120 |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 7 | SE 7 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SE 11 | E 9 | E 9 | E 10 | E 10 | S 3 | S 7 | S 7 | S 7 | S 7 | SSW 7 |
| kJ | 6 | 6 | 2 | 2 | 6 | 5 | 5 | 10 | 17 | 17 | 38 | 55 | 73 | 73 | 41 | 42 | 48 | 54 | 1 | 1 | 1 | 4 | 14 | 15 |
Swell 3 Height (m) Direction Period (s) | SE 8 | SE 7 | — | — | SE 12 | — | SE 11 | SE 10 | — | — | — | ESE 10 | — | — | — | — | — | — | S 7 | S 8 | S 8 | — | — | SW 8 |
| kJ | 2 | 2 | — | — | 5 | — | 19 | 16 | — | — | — | 20 | — | — | — | — | — | — | 1 | 1 | 1 | — | — | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 3 | SW 3 | SSW 3 | SW 3 | SW 3 | SW 3 | SSW 3 | — | SSW 7 | SSW 6 | S 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 4 | 4 | 2 | 2 | 2 | 2 | — | 9 | 8 | 13 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 6 | 6 | 6 | 13 | 208 | 65 | 6 | 6 | 6 | 6 | 6 | 6 | 382 | 382 | 236 | 2 | 6 | 2 | 2 | 6 | 2 | 13 | 13 | 13 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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