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Surf Forecasts:
Mera surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Tuesday 19 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
20.0° C
(Which is slightly cooler than normal)How big are the waves at Mera today?
The current surf forecast for Mera at 7AM is: 0.6m 11s primary swell from a Southeast direction and 0.7m 9s secondary swell from a East direction, 0.4m 3s secondary swell from a West-southwest direction (forecast issued at 02:00am May 19). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 2ft (0.6m) | 11s |
| Afternoon (19 May) | 2.5ft (0.7m) | 11s |
| Evening (19 May) | 2.5ft (0.8m) | 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 19mm), heaviest on Thu afternoon. Warm (max 22°C on Wed night, min 15°C on Thu night). Winds increasing (calm on Thu morning, strong winds from the NNE by Thu night). | ||||||||||||||||||||||||
Tuesday 19 | Wednesday 20 | Thursday 21 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
E 8 | E 9 | SE 11 | SE 11 | SE 10 | SE 11 | SE 10 | SE 10 | ESE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 10 | ESE 10 | ESE 10 | SE 10 | ESE 10 | ESE 10 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | |
90 | 99 | 92 | 92 | 108 | 110 | 102 | 115 | 178 | 196 | 229 | 151 | 192 | 168 | 161 | 157 | 177 | 142 | 142 | 218 | 230 | 232 | 231 | 203 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | glassy | cross-off | cross-off | cross-off | |
High Tide | 4:50AM1.48m | 7:31PM1.35m | 5:28AM1.45m | 8:25PM1.29m | 6:11AM1.37m | |||||||||||||||||||
Low Tide | 11:38PM0.90m | 12:12PM-0.21m | 00:19AM0.94m | 12:59PM-0.13m | 1:04AM0.96m | 1:49PM-0.01m | ||||||||||||||||||
 | |  | | | | |  | | | |  | | |  | |  | |  | | | | | | |
 | — | 4:35 | — | — | — | — | — | — | — | 4:33 | — | — | — | — | — | — | — | 4:33 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:39 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | 1 | 2 | 2 | 3 | 5 | — | |
Temp °C | 20 | 20 | 19 | 20 | 20 | 21 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 20 | 19 | 18 | 16 | 15 |
19 | 18 | 17 | 18 | 18 | 19 | 17 | 18 | 18 | 18 | 19 | 20 | 18 | 19 | 20 | 20 | 21 | 20 | 22 | 21 | 21 | 17 | 11 | 10 | |
Swell 1 Height (m) Direction Period (s) | E 8 | E 9 | E 9 | E 9 | SE 10 | SE 11 | SE 10 | SE 10 | ESE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 10 | ESE 10 | ESE 10 | SE 10 | ESE 10 | ESE 10 | SSW 6 | SSW 7 | SSW 7 | SSW 7 | SSW 7 |
 kJ | 90 | 99 | 78 | 81 | 108 | 110 | 102 | 115 | 178 | 196 | 229 | 151 | 192 | 168 | 161 | 157 | 177 | 142 | 142 | 108 | 152 | 232 | 231 | 203 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 10 | SE 11 | SE 11 | E 9 | E 9 | E 9 | E 10 | NE 9 | NE 9 | NE 9 | E 10 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 |
| kJ | 40 | 80 | 92 | 92 | 78 | 79 | 60 | 77 | 3 | 3 | 3 | 70 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 117 | 115 | 105 | 83 | 74 |
Swell 3 Height (m) Direction Period (s) | SE 7 | NE 9 | — | — | NE 9 | NE 9 | NE 9 | NE 9 | — | — | NE 9 | NE 9 | — | — | — | — | — | — | — | NE 8 | NE 8 | NE 7 | NE 6 | ESE 10 |
| kJ | 12 | 3 | — | — | 3 | 3 | 3 | 3 | — | — | 13 | 3 | — | — | — | — | — | — | — | 2 | 2 | 2 | 5 | 74 |
Wind waves Height (m) Direction Period (s) | SW 3 | SW 3 | WSW 3 | WSW 3 | SW 3 | SW 3 | SW 4 | SW 4 | SW 4 | SW 4 | WSW 4 | SW 3 | SW 4 | SW 4 | SW 4 | SSW 4 | SW 3 | SSW 4 | SSW 5 | SSW 6 | SSW 7 | NNW 3 | NNW 3 | NE 4 |
| kJ | 2 | 3 | 3 | 4 | 3 | 6 | 8 | 8 | 10 | 10 | 8 | 6 | 10 | 12 | 12 | 9 | 3 | 13 | 43 | 218 | 230 | 4 | 2 | 21 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 87 | 73 | 73 | 87 | 529 | 529 | 504 | 73 | 73 | 73 | 70 | 70 | 204 | 87 | 87 | 73 | 74 | 64 | 69 | 12 | 0 | 12 | 88 | 57 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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