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Surf Forecasts:
Mera surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Monday 04 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
18.9° C
(Which is slightly cooler than normal)How big are the waves at Mera today?
The current surf forecast for Mera at 3PM is: 3.5m 9s primary swell from a Southwest direction and 0.4m 10s secondary swell from a East-southeast direction (forecast issued at 08:00am May 04). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 May) | 15ft (4.5m) | 9s |
| Afternoon (04 May) | 11ft (3.5m) | 9s |
| Evening (04 May) | 11ft (3.5m) | 9s |
Table - waves today at Mera. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 22mm), heaviest during Mon morning. Warm (max 20°C on Mon morning, min 14°C on Mon night). Winds decreasing (near gales from the WSW on Mon afternoon, light winds from the SSE by Wed night). | ||||||||||||||||||||||||
Monday 4 | Tuesday 5 | Wednesday 6 | Thu 7 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 8 | SW 9 | SW 10 | SW 9 | SW 9 | SW 9 | WSW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 8 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | SE 6 | SSE 6 | SSE 6 | SSE 6 | ESE 9 | ESE 9 | ESE 9 | |
2142 | 3202 | 2323 | 2244 | 1969 | 1735 | 2252 | 669 | 376 | 220 | 148 | 102 | 63 | 63 | 61 | 59 | 58 | 58 | 56 | 56 | 55 | 55 | 55 | 56 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | on | off | cross-off | off | off | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross-off | |
High Tide | 4:47AM1.39m | 6:52PM1.27m | 5:13AM1.36m | 7:31PM1.22m | 5:39AM1.31m | 8:16PM1.16m | ||||||||||||||||||
Low Tide | 11:50AM-0.02m | 11:57PM0.79m | 12:22PM0.02m | 00:29AM0.83m | 12:57PM0.07m | 1:02AM0.87m | ||||||||||||||||||
 |  |  |  | |  | | |  | | |  | |  |  | | | | | | |  | | | |
 | 4:48 | — | — | — | — | — | — | 4:47 | — | — | — | — | — | — | — | 4:46 | — | — | — | — | — | — | — | 4:45 |
 | — | — | — | — | 6:27 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:29 | — | — | 6:29 |
1 | 8 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 5 | |
Temp °C | 21 | 20 | 19 | 20 | 19 | 17 | 17 | 14 | 14 | 15 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 17 |
11 | 13 | 10 | 10 | 8 | 8 | 9 | 3 | 5 | 9 | 12 | 12 | 11 | 14 | 14 | 14 | 15 | 16 | 15 | 14 | 15 | 16 | 18 | 17 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 8 | SW 8 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SSE 6 | SSE 6 | SSE 5 | SE 5 | SE 5 |
 kJ | 51 | 33 | 34 | 39 | 42 | 42 | 1385 | 669 | 376 | 220 | 148 | 102 | 54 | 63 | 61 | 59 | 58 | 58 | 56 | 53 | 47 | 36 | 32 | 32 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SE 10 | ESE 10 | ESE 10 | WSW 8 | SW 8 | SW 8 | SW 7 | SW 7 | WSW 7 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
| kJ | — | — | — | — | — | — | 41 | 41 | 40 | 38 | 77 | 55 | 63 | 44 | 31 | 15 | 14 | 8 | 5 | 56 | 55 | 55 | 55 | 56 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | NNW 4 | SSE 7 | SSE 7 | — | N 7 | S 6 | N 11 | — | WSW 7 | WSW 6 | SW 6 | SW 6 | SW 6 | SW 5 |
| kJ | — | — | — | — | — | — | — | — | — | — | 1 | 9 | 9 | — | 1 | 3 | 2 | — | 5 | 4 | 2 | 1 | 1 | 1 |
Wind waves Height (m) Direction Period (s) | SSW 8 | SW 9 | SW 10 | SW 9 | SW 9 | SW 9 | WSW 9 | NE 4 | NE 5 | NE 5 | ENE 4 | E 4 | E 4 | SE 7 | SE 4 | SE 4 | SE 5 | SE 6 | SSE 6 | — | — | — | — | — |
| kJ | 2142 | 3202 | 2323 | 2244 | 1969 | 1735 | 2252 | 22 | 89 | 37 | 19 | 15 | 13 | 55 | 18 | 28 | 39 | 44 | 53 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 500 | 483 | 483 | 767 | 521 | 61 | 500 | 69 | 57 | 0 | 36 | 64 | 64 | 64 | 64 | 36 | 36 | 36 | 64 | 64 | 77 | 64 | 36 | 0 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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