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Surf Forecasts:
Mera surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm Wednesday 10 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
21.1° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Mera today?
The current surf forecast for Mera at 5PM is: 0.8m 9s primary swell from a East-southeast direction and 0.4m 6s secondary swell from a Southwest direction (forecast issued at 02:00pm December 10). The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Dec) | - | - |
| Afternoon (10 Dec) | 2.5ft (0.8m) | 9s |
| Evening (10 Dec) | 2.5ft (0.8m) | 9s |
Table - waves today at Mera. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 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 | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 10 | 12 | 12 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 115 | 113 | 113 | 99 | 106 | 135 | 78 | 77 | 74 | 74 | 193 | 441 | 640 | 471 | 250 | 129 | 101 | 72 | 56 | 144 | 139 | 127 | 89 | 86 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | cross | on | on | on | on | cross- on | cross- on | cross- off | off | cross- off | cross- off | cross- off | off | off | off | off | off |
High Tide / height (m) | 9:12AM 1.27 | 7:11PM 1.27 | 9:55AM 1.23 | 8:19PM 1.13 | 10:35AM 1.22 | 10:07PM 1.01 | ||||||||||||||||||
Low Tide / height (m) | 2:05PM 0.95 | 2:37AM 0.29 | 3:18PM 0.90 | 3:26AM 0.46 | 4:51PM 0.81 | 4:19AM 0.62 | ||||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 |
| Sunset | - | 4:29 | - | - | - | - | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:29 | - | - | - | - | - | - |
 |  |  |  | |  | | | |  | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 13 | 15 | 16 | 16 | 16 | 15 | 10 | 8 | 8 | 8 | 7 | 6 | 6 | 6 | 5 | 6 |
| Feels °C (?) | 9 | 9 | 8 | 7 | 8 | 9 | 8 | 9 | 8 | 6 | 5 | 5 | 3 | 8 | -2 | -3 | -2 | -1 | -3 | -4 | -2 | -1 | -2 | 0 |
- 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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