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Surf Forecasts:
Shida surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Thursday 21 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
20.5° C
(Which is normal for this time of year)How big are the waves at Shida today?
The current surf forecast for Shida at 1PM is: 2.1m 7s primary swell from a South-southwest direction and 0.7m 10s secondary swell from a East-southeast direction, 0.1m 7s secondary swell from a Northeast direction (forecast issued at 08:00am May 21). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 5ft (1.5m) | 6s |
| Afternoon (21 May) | 6.5ft (2.0m) | 8s |
| Evening (21 May) | 5ft (1.5m) | 8s |
Table - waves today at Shida. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 21mm), heaviest during Thu afternoon. Warm (max 25°C on Thu morning, min 14°C on Fri night). Winds increasing (light winds from the W on Thu afternoon, strong winds from the NNE by Fri morning). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SE 9 | S 6 | SSW 7 | SSW 8 | SSW 8 | S 8 | S 8 | NE 7 | NE 7 | NE 7 | NE 7 | NE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | |
88 | 184 | 420 | 438 | 373 | 301 | 186 | 147 | 215 | 293 | 452 | 906 | 1176 | 1083 | 942 | 761 | 697 | 586 | 494 | 435 | 554 | 395 | 402 | 342 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross | on | on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | |
High Tide | 5:41AM1.47m | 9:07PM1.29m | 6:32AM1.36m | 10:05PM1.27m | 7:39AM1.23m | 10:57PM1.27m | ||||||||||||||||||
Low Tide | 1:26PM0.10m | 1:33AM1.08m | 2:20PM0.25m | 3:01AM1.04m | 3:18PM0.40m | |||||||||||||||||||
 |  |  |  | |  | |  | | | | | | | | | | | |  | | | | | |
 | 4:30 | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — | — | 4:28 |
 | — | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:40 | — | — | 6:40 |
1 | — | 1 | 8 | 4 | 1 | 1 | — | — | 1 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 25 | 24 | 21 | 17 | 16 | 16 | 17 | 17 | 17 | 16 | 15 | 15 | 14 | 15 | 15 | 16 | 17 | 18 | 19 | 19 | 19 | 19 | 19 |
21 | 23 | 23 | 22 | 14 | 13 | 12 | 13 | 13 | 12 | 9 | 7 | 8 | 7 | 10 | 9 | 10 | 12 | 14 | 16 | 16 | 16 | 17 | 17 | |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | ESE 10 | SSW 8 | S 8 | S 8 | S 8 | SSW 8 | S 7 | S 7 | S 7 | S 7 | S 7 | SSW 7 | SSW 7 | S 7 | S 6 | S 6 | S 6 | E 9 | SW 7 | ESE 12 | E 9 |
 kJ | 88 | 86 | 90 | 83 | 373 | 301 | 186 | 124 | 94 | 70 | 51 | 39 | 26 | 16 | 16 | 9 | 8 | 7 | 3 | 3 | 389 | 2 | 14 | 342 |
Swell 2 Height (m) Direction Period (s) | ENE 8 | ENE 7 | NE 7 | E 11 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SE 9 | ESE 10 | — | — | S 9 | SE 7 | SW 10 | SW 8 | SW 8 | SSE 7 | S 6 | S 6 | NE 11 | NE 11 | NE 10 |
| kJ | 6 | 5 | 2 | 2 | 61 | 59 | 59 | 58 | 58 | 41 | 37 | — | — | 6 | 2 | 4 | 10 | 2 | 5 | 3 | 3 | 5 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | E 12 | NE 12 | E 11 | NE 11 | NE 11 | E 11 | NE 11 | NE 11 | — | — | — | — | — | — | — | SW 10 | SE 8 | — | — | — | SW 7 | — | SW 7 | SE 12 |
| kJ | 3 | 6 | 3 | 5 | 5 | 2 | 5 | 5 | — | — | — | — | — | — | — | 4 | 2 | — | — | — | 2 | — | 2 | 6 |
Wind waves Height (m) Direction Period (s) | S 6 | S 6 | SSW 7 | SSW 8 | NE 5 | NE 5 | NE 6 | NE 7 | NE 7 | NE 7 | NE 7 | NE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | SE 6 |
| kJ | 80 | 184 | 420 | 438 | 13 | 82 | 120 | 147 | 215 | 293 | 452 | 906 | 1176 | 1083 | 942 | 761 | 697 | 586 | 494 | 435 | 554 | 395 | 402 | 77 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 155 | 565 | 23 | 1 | 63 | 63 | 63 | 85 | 216 | 216 | 216 | 583 | 544 | 626 | 829 | 875 | 872 | 872 | 956 | 956 | 115 | 829 | 115 | 63 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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