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Surf Forecasts:
Matsube Bay surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Wednesday 06 May 2026 JSTForecast update in hr min s Forecast update imminent
Matsube Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Matsube Bay sea temperature is
19.0° C
(Which is slightly cooler than normal)How big are the waves at Matsube Bay today?
The current surf forecast for Matsube Bay at 6AM is: 0.6m 9s primary swell from a East-southeast direction and 0.8m 5s secondary swell from a South-southeast direction (forecast issued at 02:00am May 06). An open ocean swell of 0.2m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 May) | 3ft (0.9m) | 6s |
| Afternoon (06 May) | 3ft (0.9m) | 6s |
| Evening (06 May) | 3.5ft (1.1m) | 6s |
Table - waves today at Matsube Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 21°C on Fri morning, min 16°C on Fri night). Winds increasing (calm on Wed night, strong winds from the SW by Fri night). | ||||||||||||||||||||||||
Wednesday 6 | Thursday 7 | Friday 8 | ||||||||||||||||||||||
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 10 | ESE 9 | ESE 9 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SSE 7 | SSE 7 | SSE 7 | S 7 | S 7 | SSW 7 | SSW 7 | SE 10 | SSW 7 | SSW 6 | SSW 6 | SSW 7 | |
60 | 59 | 58 | 56 | 56 | 56 | 72 | 72 | 86 | 106 | 100 | 88 | 150 | 153 | 145 | 134 | 192 | 161 | 157 | 151 | 171 | 241 | 307 | 553 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | glassy | glassy | glassy | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | |
High Tide | 5:26AM1.39m | 8:14PM1.17m | 5:56AM1.34m | 9:14PM1.13m | 6:29AM1.27m | |||||||||||||||||||
Low Tide | 11:59PM0.95m | 12:55PM0.22m | 00:28AM0.99m | 1:37PM0.29m | 1:08AM1.02m | 2:26PM0.37m | ||||||||||||||||||
 |  |  |  | | |  |  | | | | | | | | |  | | | | | | | | |
 | — | 4:43 | — | — | — | — | — | — | — | 4:41 | — | — | — | — | — | — | — | 4:41 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:27 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:29 | — |
— | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 17 | 17 | 18 | 18 | 17 | 18 | 18 | 17 | 17 | 17 | 19 | 19 | 20 | 19 | 19 | 19 | 19 | 19 | 20 | 21 | 21 | 20 | 19 |
13 | 13 | 14 | 14 | 15 | 15 | 17 | 18 | 17 | 18 | 19 | 21 | 21 | 20 | 19 | 18 | 17 | 17 | 17 | 17 | 17 | 16 | 14 | 11 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SSE 7 | SSE 7 | SSE 7 | S 7 | S 7 | S 7 | S 7 | SE 10 | SE 10 | SE 10 | ESE 10 | SE 11 |
 kJ | 60 | 59 | 58 | 56 | 56 | 56 | 55 | 72 | 86 | 106 | 100 | 88 | 150 | 153 | 145 | 134 | 138 | 111 | 107 | 151 | 154 | 160 | 141 | 115 |
Swell 2 Height (m) Direction Period (s) | SW 8 | SW 8 | WSW 8 | WSW 7 | SW 7 | SW 7 | SW 7 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SE 10 | ESE 10 | — | — | NE 11 | NE 11 | NE 11 |
| kJ | 16 | 10 | 6 | 5 | 2 | 2 | 2 | 55 | 56 | 54 | 56 | 67 | 86 | 86 | 88 | 90 | 90 | 104 | 133 | — | — | 5 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | N 11 | ESE 11 | SE 11 | NE 9 | N 8 | N 7 | N 6 | SW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 12 | 19 | 3 | 1 | 1 | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 4 | SSE 4 | SSE 5 | SSE 6 | SSE 6 | SSE 6 | SE 6 | — | — | — | — | — | — | — | — | — | S 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 6 | SSW 6 | SSW 7 |
| kJ | 19 | 22 | 31 | 53 | 53 | 55 | 72 | — | — | — | — | — | — | — | — | — | 192 | 161 | 157 | 135 | 171 | 241 | 307 | 553 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 137 | 202 | 15 | 15 | 15 | 127 | 127 | 23 | 23 | 0 | 0 | 0 | 0 | 15 | 15 | 107 | 107 | 107 | 107 | 86 | 532 | 291 | 532 | 549 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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