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Surf Forecasts:
Mera surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Tuesday 05 May 2026 JSTForecast update in hr min s Forecast update imminent
Mera surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mera sea temperature is
19.3° C
(Which is normal for this time of year)How big are the waves at Mera today?
The current surf forecast for Mera at 10AM is: 1.1m 9s primary swell from a Southwest direction and 0.4m 10s secondary swell from a East-southeast direction (forecast issued at 02:00am May 05). An open ocean swell of 0.8m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 May) | 4ft (1.2m) | 9s |
| Afternoon (05 May) | 3ft (0.9m) | 8s |
| Evening (05 May) | 2ft (0.6m) | 10s |
Table - waves today at Mera. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 17mm), heaviest on Thu morning. Very mild (max 19°C on Thu afternoon, min 15°C on Tue morning). Winds increasing (calm on Wed night, fresh winds from the SW by Thu night). | ||||||||||||||||||||||||
Tuesday 5 | Wednesday 6 | Thursday 7 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
WSW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 8 | SE 10 | ESE 10 | ESE 10 | ESE 9 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 | ESE 10 | SE 7 | SE 7 | SE 7 | SSE 7 | S 7 | |
1797 | 573 | 349 | 226 | 168 | 102 | 76 | 63 | 61 | 59 | 58 | 58 | 56 | 56 | 55 | 55 | 57 | 60 | 81 | 97 | 90 | 114 | 307 | 357 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | off | off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross-on | glassy | off | cross-off | cross | on | on | |
High Tide | 5:13AM1.36m | 7:31PM1.22m | 5:39AM1.31m | 8:16PM1.16m | 6:07AM1.26m | |||||||||||||||||||
Low Tide | 11:57PM0.79m | 12:22PM0.02m | 00:29AM0.83m | 12:57PM0.07m | 1:02AM0.87m | 1:37PM0.14m | ||||||||||||||||||
 | |  |  |  | | |  |  | | | | | | | |  | |  |  | | | | | |
 | — | 4:47 | — | — | — | — | — | — | — | 4:46 | — | — | — | — | — | — | — | 4:45 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:29 | — | — | — | — | — | — | — | 6:29 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 3 | 8 | 2 | — | — | — | |
Temp °C | 18 | 15 | 14 | 15 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 18 |
14 | 5 | 5 | 10 | 12 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 15 | 16 | 16 | 15 | 16 | 18 | 20 | 18 | 16 | 20 | 20 | 17 | |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SSE 6 | SE 6 | SE 6 | SE 7 | SE 7 | SE 7 | SE 7 | SSE 7 |
 kJ | 1283 | 573 | 349 | 226 | 168 | 102 | 54 | 53 | 61 | 59 | 58 | 58 | 56 | 56 | 55 | 55 | 57 | 60 | 68 | 97 | 86 | 114 | 183 | 289 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | S 7 | S 7 | ESE 10 | ESE 10 | ESE 10 | SE 10 | ESE 10 | SW 8 | SW 8 | SW 7 | SW 7 | WSW 7 | WSW 7 | SW 6 | SW 6 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 |
| kJ | 42 | 39 | 26 | 38 | 38 | 55 | 76 | 63 | 31 | 15 | 14 | 8 | 5 | 4 | 2 | 1 | 54 | 56 | 81 | 88 | 90 | 90 | 42 | 43 |
Swell 3 Height (m) Direction Period (s) | — | ESE 10 | ESE 10 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | — | — | — | SE 11 | — | — | — | — | N 12 | SW 7 | W 7 | W 7 | — | — | N 7 | — | — |
| kJ | — | 41 | 40 | 16 | 9 | 16 | 15 | — | — | — | 19 | — | — | — | — | 3 | 2 | 1 | 1 | — | — | 1 | — | — |
Wind waves Height (m) Direction Period (s) | WSW 9 | NE 3 | NE 4 | NE 4 | ENE 8 | E 4 | E 4 | SE 4 | SE 4 | SSE 5 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | — | — | — | — | — | — | SSE 7 | S 7 |
| kJ | 1797 | 4 | 43 | 26 | 49 | 10 | 12 | 19 | 24 | 40 | 53 | 55 | 55 | 55 | 55 | 55 | — | — | — | — | — | — | 307 | 357 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 69 | 69 | 0 | 0 | 0 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 153 | 64 | 64 | 36 | 0 | 0 | 33 | 12 | 12 | 12 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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