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Surf Forecasts:
Mera surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 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 5AM is: 3.5m 8s primary swell from a South-southwest direction and 0.5m 10s secondary swell from a East-southeast direction (forecast issued at 02:00am May 04). An open ocean swell of 0.1m 10s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 May) | 13ft (4.0m) | 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 20mm), heaviest during Mon morning. Warm (max 20°C on Mon morning, min 14°C on Mon night). Winds decreasing (near gales from the SW on Mon afternoon, light winds from the SSE by Wed night). | ||||||||||||||||||||||||
Monday 4 | Tuesday 5 | Wednesday 6 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
SSW 6 | SSW 7 | SSW 8 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 8 | SW 8 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | SE 6 | SE 6 | ESE 9 | ESE 9 | ESE 9 | |
384 | 937 | 1959 | 2644 | 2199 | 2147 | 2150 | 2019 | 1452 | 744 | 412 | 269 | 142 | 100 | 69 | 63 | 61 | 59 | 58 | 58 | 56 | 56 | 55 | 55 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | on | on | on | cross-off | cross-off | off | off | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross | |
High Tide | 4:47AM1.39m | 6:52PM1.27m | 5:13AM1.36m | 7:31PM1.22m | 5:39AM1.31m | 8:16PM1.16m | ||||||||||||||||||
Low Tide | 11:26PM0.75m | 11:50AM-0.02m | 11:57PM0.79m | 12:22PM0.02m | 00:29AM0.83m | 12:57PM0.07m | ||||||||||||||||||
 |  |  |  |  |  | | |  |  |  | | | | | | | | | | | | | | |
 | — | 4:48 | — | — | — | — | — | — | — | 4:47 | — | — | — | — | — | — | — | 4:46 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:27 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:29 | — |
— | 1 | 1 | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | |
Temp °C | 20 | 20 | 21 | 20 | 19 | 19 | 19 | 17 | 18 | 15 | 14 | 15 | 16 | 16 | 16 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 18 |
13 | 11 | 11 | 13 | 10 | 9 | 9 | 7 | 13 | 6 | 5 | 9 | 12 | 12 | 12 | 13 | 14 | 15 | 16 | 15 | 16 | 15 | 15 | 16 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SW 9 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SW 8 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | SE 6 | SE 5 | SE 5 | SE 5 |
 kJ | 68 | 71 | 51 | 54 | 39 | 33 | 42 | 42 | 42 | 744 | 412 | 269 | 142 | 100 | 69 | 51 | 61 | 59 | 58 | 58 | 44 | 42 | 35 | 30 |
Swell 2 Height (m) Direction Period (s) | NE 10 | NE 10 | — | E 10 | — | — | — | — | — | S 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SW 8 | WSW 8 | SW 7 | SW 7 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
| kJ | 4 | 4 | — | 17 | — | — | — | — | — | 27 | 41 | 39 | 38 | 55 | 64 | 63 | 30 | 23 | 14 | 13 | 56 | 56 | 55 | 55 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | ESE 10 | — | — | SSE 7 | S 7 | S 7 | ENE 4 | — | — | N 11 | SW 7 | WSW 7 | WSW 7 | WSW 6 | SW 6 |
| kJ | — | — | — | — | — | — | — | — | — | 42 | — | — | 9 | 15 | 8 | 7 | — | — | 2 | 13 | 5 | 4 | 4 | 1 |
Wind waves Height (m) Direction Period (s) | SSW 6 | SSW 7 | SSW 8 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | — | NE 4 | NE 5 | ENE 4 | E 4 | E 4 | SE 4 | SE 4 | SE 5 | SE 5 | SE 6 | — | — | — | — |
| kJ | 384 | 937 | 1959 | 2644 | 2199 | 2147 | 2150 | 2019 | 1452 | — | 49 | 44 | 20 | 14 | 12 | 17 | 25 | 32 | 42 | 50 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 767 | 504 | 500 | 483 | 483 | 521 | 500 | 50 | 69 | 56 | 55 | 0 | 36 | 47 | 64 | 64 | 64 | 74 | 36 | 64 | 64 | 64 | 64 | 70 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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