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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 7AM is: 1.4m 9s primary swell from a Southwest direction and 0.5m 7s secondary swell from a South direction (forecast issued at 02:00am May 05). An open ocean swell of 1.0m 4s is not directed at the surf break. The wind direction is predicted to be 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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