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Surf Forecasts:
Shida surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Monday 18 May 2026 JSTForecast update in hr min s Forecast update imminent
Shida surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Shida sea temperature is
18.7° C
(Which is 1.8°C colder than average for this time of year)How big are the waves at Shida today?
The current surf forecast for Shida at 4PM is: 0.9m 8s primary swell from a East-southeast direction and 0.4m 7s secondary swell from a Southeast direction (forecast issued at 08:00am May 18). The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 3.5ft (1.1m) | 8s |
| Afternoon (18 May) | 3ft (0.9m) | 8s |
| Evening (18 May) | 2.5ft (0.8m) | 8s |
Table - waves today at Shida. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Wed night. Warm (max 25°C on Wed morning, min 18°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ESE 8 | ESE 8 | ESE 9 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SE 10 | ESE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 | |
190 | 160 | 176 | 127 | 134 | 94 | 94 | 90 | 64 | 73 | 77 | 161 | 137 | 139 | 142 | 142 | 163 | 160 | 137 | 134 | 128 | 147 | 144 | 125 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | glassy | cross-on | |
High Tide | 3:42AM1.57m | 6:21PM1.44m | 4:19AM1.58m | 7:13PM1.39m | 4:58AM1.55m | 8:09PM1.33m | ||||||||||||||||||
Low Tide | 11:04AM-0.12m | 11:04PM1.04m | 11:49AM-0.10m | 11:44PM1.07m | 12:36PM-0.02m | 00:31AM1.09m | ||||||||||||||||||
 | | | | |  | | | | | | |  | | | | |  | | | |  | | | |
 | 4:31 | — | — | — | — | — | — | 4:31 | — | — | — | — | — | — | — | 4:31 | — | — | — | — | — | — | — | 4:30 |
 | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | 6:38 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 19 | 21 | 22 | 22 | 21 | 20 | 19 | 19 | 19 | 22 | 22 | 22 | 21 | 20 | 19 | 19 | 19 | 23 | 25 | 24 | 22 | 21 | 20 | 18 |
20 | 21 | 21 | 20 | 20 | 20 | 18 | 19 | 18 | 20 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 22 | 23 | 23 | 23 | 24 | 23 | 16 | |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 9 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 |
 kJ | 190 | 160 | 176 | 127 | 134 | 94 | 94 | 90 | 62 | 73 | 55 | 161 | 137 | 139 | 142 | 142 | 163 | 160 | 137 | 134 | 128 | 147 | 144 | 125 |
Swell 2 Height (m) Direction Period (s) | ENE 10 | ENE 10 | SSE 8 | SE 7 | SE 7 | SE 7 | SE 10 | SE 9 | SE 9 | SE 9 | SE 10 | ENE 9 | ENE 9 | NE 9 | NE 10 | NE 9 | SSE 4 | S 5 | NE 9 | SSW 4 | SSW 4 | ENE 8 | ENE 8 | NE 8 |
| kJ | 9 | 9 | 11 | 14 | 13 | 12 | 25 | 41 | 64 | 68 | 77 | 8 | 8 | 23 | 23 | 22 | 4 | 7 | 19 | 11 | 6 | 6 | 6 | 9 |
Swell 3 Height (m) Direction Period (s) | — | SE 8 | ENE 10 | ENE 10 | SE 10 | SE 10 | SSE 7 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 11 | NE 9 | NE 9 | NE 9 | NE 9 | NE 8 | NE 8 | — | ENE 8 | ENE 8 | NE 8 | S 8 | S 8 |
| kJ | — | 14 | 9 | 9 | 16 | 16 | 9 | 8 | 8 | 8 | 8 | 2 | 29 | 29 | 27 | 27 | 18 | 18 | — | 7 | 6 | 17 | 1 | 1 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSW 3 | SSW 3 | SSW 3 | S 3 | S 3 | S 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SW 4 | SW 4 | SSW 4 | SW 4 | SW 4 | SW 4 | — | — |
| kJ | — | — | — | — | 1 | 3 | 3 | 6 | 6 | 6 | 15 | 16 | 16 | 12 | 11 | 13 | 14 | 6 | 11 | 21 | 7 | 4 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 153 | 153 | 115 | 115 | 153 | 592 | 592 | 115 | 115 | 115 | 115 | 1 | 0 | 7 | 7 | 0 | 0 | 0 | 27 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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