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Surf Forecasts:
Mera surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Monday 08 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 1PM is: 2.4m 6s primary swell from a West-southwest direction and 0.4m 10s secondary swell from a Southeast direction (forecast issued at 08:00am December 08). An open ocean swell of 0.1m 13s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Dec) | 4ft (1.2m) | 6s |
| Afternoon (08 Dec) | 8ft (2.5m) | 7s |
| Evening (08 Dec) | 5ft (1.6m) | 6s |
Table - waves today at Mera. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 08 | Tuesday 09 | Wednesday 10 | Thu 11 | |||||||||||||||||||||
| 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 | 6 PM | 9 PM | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 6 | 6 | 7 | 7 | 6 | 6 | 6 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 130 | 100 | 419 | 554 | 431 | 198 | 170 | 39 | 27 | 21 | 32 | 30 | 40 | 40 | 82 | 154 | 154 | 68 | 138 | 138 | 146 | 80 | 82 | 96 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | cross- on | cross- on | cross- off | off | off | off | off | off | off | off | cross- off | cross- off | off | off | cross- off | off | cross- off | glass | cross- on | on | cross- on |
High Tide / height (m) | 7:42AM 1.39 | 5:34PM 1.49 | 8:28AM 1.33 | 6:19PM 1.39 | 9:12AM 1.27 | 7:11PM 1.27 | ||||||||||||||||||
Low Tide / height (m) | 12:24PM 1.01 | 1:05AM -0.02 | 1:10PM 0.99 | 1:51AM 0.12 | 2:05PM 0.95 | 2:37AM 0.29 | ||||||||||||||||||
Monday 08 | Tuesday 09 | Wednesday 10 | Thu 11 | |||||||||||||||||||||
| Sunrise | - | 6:35 | - | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:29 | - | - | - | - |
 |  | |  |  | | | | |  | | | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 14 | 16 | 17 | 17 | 16 | 14 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 11 | 11 | 11 | 11 | 12 | 13 | 13 | 13 | 13 | 13 |
| Feels °C (?) | 10 | 8 | 6 | 6 | 7 | 10 | 8 | 6 | 4 | 4 | 5 | 5 | 5 | 6 | 8 | 8 | 6 | 6 | 9 | 11 | 11 | 11 | 9 | 8 |
- 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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