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Surf Forecasts:
Katahama surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 pm Saturday 30 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
20.6° C
(Which is 1.6°C colder than average for this time of year)How big are the waves at Katahama today (31 May):
- Morning surf: Morning surf (31 May, local time) - 2ft (0.6m), 14s period with S swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 2ft (0.6m), 10s period with E swell.
- Evening surf: Evening surf (31 May, local time) - 3.5ft (1.1m), 12s period with S swell.
The current surf forecast for Katahama at 2AM is: 0.6m 10s primary swell from a East direction and 0.3m 6s secondary swell from a South-southeast direction (forecast issued at 08:00pm May 30). An open ocean swell of 0.5m 4s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 2ft (0.6m) | 14s |
| Afternoon (31 May) | 2ft (0.6m) | 10s |
| Evening (31 May) | 3.5ft (1.1m) | 12s |
Table - waves today at Katahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 26°C on Sun afternoon, min 19°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 30 | Sunday 31 | Monday 1 | Tuesday 2 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
E 11 | E 11 | E 10 | E 10 | E 10 | S 14 | S 13 | E 10 | E 10 | S 12 | E 10 | S 11 | SSE 6 | E 10 | S 11 | S 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 10 | E 10 | E 10 | |
83 | 110 | 78 | 77 | 104 | 142 | 225 | 73 | 71 | 336 | 49 | 303 | 33 | 52 | 224 | 121 | 46 | 45 | 44 | 43 | 28 | 50 | 49 | 49 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-off | off | glassy | glassy | glassy | glassy | cross-off | on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross-off | glassy | glassy | cross-on | on | cross-on | |
High Tide | 5:30PM1.43m | 4:15AM1.58m | 6:05PM1.45m | 4:46AM1.60m | 6:41PM1.47m | 5:21AM1.61m | ||||||||||||||||||
Low Tide | 10:41PM0.94m | 11:19AM0.10m | 11:14PM0.95m | 11:52AM0.07m | 11:50PM0.96m | 12:27PM0.07m | ||||||||||||||||||
 |  |  | |  | | | |  |  | | | | | | | | | | | | | | | |
 | — | — | — | 4:35 | — | — | — | — | — | — | — | 4:35 | — | — | — | — | — | — | — | 4:35 | — | — | — | — |
 | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | — | — | 6:54 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 22 | 20 | 20 | 20 | 22 | 23 | 26 | 24 | 21 | 20 | 20 | 19 | 22 | 24 | 23 | 22 | 21 | 21 | 20 | 20 | 21 | 21 | 22 |
21 | 20 | 20 | 21 | 20 | 22 | 23 | 25 | 22 | 20 | 19 | 20 | 20 | 23 | 23 | 22 | 21 | 21 | 22 | 21 | 22 | 22 | 21 | 23 | |
Swell 1 Height (m) Direction Period (s) | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 | S 13 | S 13 | E 10 | S 12 | SSW 6 | S 6 | S 11 | S 11 | S 11 | SSW 14 | S 13 | SSW 13 | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SSW 13 |
 kJ | 83 | 110 | 78 | 77 | 104 | 102 | 225 | 319 | 71 | 336 | 145 | 101 | 235 | 231 | 224 | 547 | 905 | 901 | 1057 | 929 | 1482 | 1628 | 1677 | 1581 |
Swell 2 Height (m) Direction Period (s) | E 6 | SW 6 | SW 6 | SSE 6 | SW 4 | S 14 | E 10 | E 10 | SE 12 | E 10 | S 12 | S 11 | SSE 6 | SSW 15 | S 14 | S 10 | E 10 | E 10 | E 10 | SSW 17 | E 9 | E 10 | E 10 | E 10 |
| kJ | 17 | 15 | 14 | 6 | 8 | 142 | 74 | 73 | 22 | 75 | 333 | 303 | 33 | 370 | 311 | 121 | 46 | 45 | 44 | 373 | 28 | 50 | 49 | 49 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SSE 6 | SSE 6 | SW 6 | S 15 | SW 4 | SW 6 | SE 12 | S 8 | SE 12 | E 10 | S 15 | S 15 | E 10 | SSW 16 | E 10 | SE 11 | SE 11 | SE 11 | E 9 | SE 11 | SSE 6 | E 10 | SE 11 |
| kJ | 3 | 7 | 7 | 6 | 70 | 4 | 12 | 23 | 1 | 22 | 49 | 119 | 218 | 52 | 155 | 46 | 20 | 19 | 19 | 43 | 18 | 18 | 49 | 18 |
Wind waves Height (m) Direction Period (s) | SSW 6 | SW 3 | WSW 4 | WSW 4 | W 4 | — | — | — | S 12 | SSW 6 | — | — | SW 5 | SW 5 | SW 5 | SW 4 | — | — | — | — | — | — | — | — |
| kJ | 36 | 5 | 7 | 9 | 11 | — | — | — | 584 | 110 | — | — | 23 | 16 | 11 | 10 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 65 | 6 | 6 | 6 | 2 | 2 | 2 | 6 | 65 | 65 | 6 | 2 | 2 | 2 | 65 | 65 | 65 | 6 | 2 | 2 | 2 | 13 | 13 | 65 |
Best forecast wave conditions in Shizuoka | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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