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Surf Forecasts:
Mera surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 pm Sunday 07 Dec 2025 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
20.9° C
(Which is slightly warmer than usual)How big are the waves at Mera today?
The current surf forecast for Mera at 12AM is: 1.7m 7s primary swell from a West direction and 0.9m 7s secondary swell from a West-southwest direction, 0.4m 9s secondary swell from a Southeast direction (forecast issued at 08:00pm December 07). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Dec) | - | - |
| Afternoon (08 Dec) | - | - |
| Evening (08 Dec) | 5.5ft (1.7m) | 7s |
Table - waves today at Mera. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sun 07 | Monday 08 | Tuesday 09 | Wednesday 10 | |||||||||||||||||||||
| 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 7 | 7 | 6 | 6 | 6 | 9 | 9 | 9 | 9 | 8 | 8 | 9 | 10 | 10 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 222 | 255 | 262 | 190 | 112 | 47 | 374 | 537 | 482 | 263 | 193 | 44 | 27 | 21 | 32 | 30 | 41 | 41 | 44 | 154 | 154 | 147 | 141 | 141 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | glass | cross | cross- off | cross | cross- on | cross- on | cross- on | cross- on | cross- off | off | off | off | off | off | off | off | off | cross- off | cross- off | off | off | cross- off | glass |
High Tide / height (m) | 4:52PM 1.56 | 7:42AM 1.39 | 5:34PM 1.49 | 8:28AM 1.33 | 6:19PM 1.39 | 9:12AM 1.27 | ||||||||||||||||||
Low Tide / height (m) | 12:20AM -0.13 | 12:24PM 1.01 | 1:05AM -0.02 | 1:10PM 0.99 | 1:51AM 0.12 | 2:05PM 0.95 | ||||||||||||||||||
Sun 07 | Monday 08 | Tuesday 09 | Wednesday 10 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:35 | - | - |
| Sunset | - | - | - | - | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:29 |
 | | | | |  | |  |  | | | | | | | | | | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 15 | 15 | 14 | 14 | 14 | 16 | 17 | 17 | 16 | 14 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 |
| Feels °C (?) | 12 | 14 | 12 | 11 | 11 | 10 | 8 | 6 | 7 | 10 | 8 | 6 | 4 | 4 | 5 | 6 | 6 | 8 | 8 | 8 | 6 | 6 | 7 | 10 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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