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Surf Forecasts:
Mera surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Sunday 17 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
19.2° C
(Which is 1.5°C colder than average for this time of year)How big are the waves at Mera today?
The current surf forecast for Mera at 5AM is: 0.9m 9s primary swell from a East-southeast direction and 0.3m 11s secondary swell from a Southeast direction (forecast issued at 02:00am May 17). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 3ft (0.9m) | 9s |
| Afternoon (17 May) | 3ft (0.9m) | 9s |
| Evening (17 May) | 4ft (1.2m) | 9s |
Table - waves today at Mera. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 21°C on Sun afternoon, min 18°C on Tue night). Winds increasing (calm on Sun morning, fresh winds from the SSW by Tue night). | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
ESE 9 | ESE 7 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | E 9 | ESE 9 | ESE 8 | ESE 8 | E 9 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | |
124 | 40 | 143 | 140 | 140 | 134 | 184 | 208 | 237 | 184 | 180 | 190 | 166 | 158 | 129 | 115 | 110 | 106 | 92 | 92 | 134 | 110 | 102 | 115 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-off | cross | glassy | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | cross-on | on | on | |
High Tide | 3:38AM1.45m | 5:48PM1.43m | 4:13AM1.48m | 6:39PM1.41m | 4:50AM1.48m | 7:31PM1.35m | ||||||||||||||||||
Low Tide | 10:16PM0.78m | 10:43AM-0.19m | 10:58PM0.85m | 11:26AM-0.23m | 11:38PM0.90m | 12:12PM-0.21m | ||||||||||||||||||
 | |  | | | | | | | | | | | | | | | | |  |  | | |  | |
 | — | 4:35 | — | — | — | — | — | — | — | 4:35 | — | — | — | — | — | — | — | 4:35 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:38 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 18 | 18 | 19 | 20 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 20 | 20 | 19 | 19 | 20 | 20 | 21 | 20 | 20 |
18 | 17 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 19 | 19 | 18 | 19 | 19 | 19 | 18 | 18 | 19 | 18 | 19 | 18 | 18 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 7 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | E 9 | ESE 9 | ESE 8 | ESE 8 | E 9 | E 9 | E 9 | SE 11 | SE 11 | SE 10 | SE 10 |
 kJ | 124 | 40 | 143 | 140 | 140 | 134 | 184 | 208 | 237 | 184 | 180 | 190 | 166 | 158 | 129 | 115 | 110 | 106 | 76 | 81 | 134 | 110 | 102 | 115 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 10 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | NE 9 | — | NE 11 | NE 11 | NE 10 | SE 8 | SE 7 | SE 7 | SE 10 | SE 11 | SE 8 | SE 11 | SE 11 | E 9 | E 9 | E 9 | E 10 |
| kJ | 37 | 47 | 19 | 19 | 19 | 17 | 4 | 21 | — | 5 | 5 | 4 | 14 | 14 | 14 | 36 | 40 | 57 | 92 | 92 | 60 | 59 | 61 | 77 |
Swell 3 Height (m) Direction Period (s) | SSE 10 | ESE 9 | SE 11 | NE 9 | ENE 9 | ENE 9 | — | — | — | — | — | NE 10 | NE 10 | SE 10 | SE 10 | SE 7 | NE 10 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | SSE 4 |
| kJ | 10 | 33 | 19 | 3 | 8 | 7 | — | — | — | — | — | 4 | 4 | 16 | 16 | 12 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 7 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 2 | SW 3 | SW 3 | SW 3 | SW 3 | SW 3 | WSW 3 | S 4 | S 4 | SW 3 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 2 | 2 | 2 | 2 | 1 | 8 | 9 | 5 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 12 | 0 | 0 | 33 | 36 | 64 | 12 | 0 | 0 | 0 | 36 | 64 | 64 | 64 | 77 | 77 | 73 | 73 | 77 | 64 | 64 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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