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Surf Forecasts:
Mera surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Sunday 31 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
22.4° C
(Which is slightly warmer than usual)How big are the waves at Mera today (31 May):
- Morning surf: Morning surf (31 May, local time) - 3ft (0.9m), 10s period with E swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 2.5ft (0.8m), 10s period with E swell.
- Evening surf: Evening surf (31 May, local time) - 2.5ft (0.8m), 12s period with S swell.
The current surf forecast for Mera at 4PM is: 0.8m 10s primary swell from a East direction and 0.6m 12s secondary swell from a South direction, 0.5m 6s secondary swell from a South direction (forecast issued at 08:00am May 31). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 3ft (0.9m) | 10s |
| Afternoon (31 May) | 2.5ft (0.8m) | 10s |
| Evening (31 May) | 2.5ft (0.8m) | 12s |
Table - waves today at Mera. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 11mm), heaviest on Tue night. Warm (max 23°C on Sun morning, min 19°C on Sun night). Mainly strong winds. | ||||||||||||||||||||||||
Sunday 31 | Monday 1 | Tuesday 2 | Wed 3 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
E 10 | E 10 | ESE 10 | E 10 | SSW 12 | S 12 | S 11 | S 11 | S 11 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SW 13 | SW 13 | SSW 13 | SSW 13 | SW 16 | |
167 | 161 | 136 | 128 | 548 | 171 | 160 | 154 | 151 | 229 | 288 | 468 | 425 | 597 | 475 | 384 | 373 | 752 | 961 | 732 | 711 | 563 | 538 | 468 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | glassy | cross | on | on | on | on | on | on | on | on | cross-on | cross-on | on | on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | |
High Tide | 3:17AM1.39m | 5:38PM1.32m | 3:49AM1.40m | 6:14PM1.32m | 4:22AM1.39m | 6:50PM1.31m | ||||||||||||||||||
Low Tide | 10:29AM0.01m | 10:36PM0.87m | 11:02AM-0.00m | 11:12PM0.87m | 11:36AM0.00m | 11:48PM0.88m | ||||||||||||||||||
 | | | | |  | | |  | | | | | |  |  | | | | | |  | | | |
 | 4:28 | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — | — | 4:26 |
 | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:47 | — | — | — | — | — | — | — | 6:49 | — | — | 6:49 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | |
Temp °C | 21 | 21 | 23 | 23 | 22 | 20 | 19 | 19 | 19 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 20 |
21 | 22 | 23 | 22 | 17 | 14 | 15 | 17 | 18 | 20 | 20 | 19 | 20 | 19 | 20 | 20 | 21 | 20 | 20 | 21 | 21 | 21 | 21 | 19 | |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | ESE 10 | E 10 | E 10 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SW 13 | SW 13 | SSW 13 | SSW 13 | SW 12 |
 kJ | 167 | 161 | 136 | 128 | 125 | 171 | 160 | 154 | 151 | 114 | 141 | 468 | 425 | 597 | 475 | 384 | 373 | 752 | 961 | 732 | 711 | 563 | 538 | 330 |
Swell 2 Height (m) Direction Period (s) | SW 7 | SW 6 | S 13 | S 12 | SE 12 | E 10 | E 10 | E 10 | E 10 | E 10 | SSW 16 | E 10 | E 10 | E 10 | E 10 | SW 16 | SW 15 | E 10 | E 10 | E 9 | E 9 | E 9 | SW 17 | SW 16 |
| kJ | 11 | 20 | 87 | 106 | 23 | 96 | 94 | 100 | 94 | 92 | 288 | 90 | 64 | 89 | 65 | 299 | 340 | 65 | 65 | 62 | 62 | 61 | 222 | 468 |
Swell 3 Height (m) Direction Period (s) | SSE 6 | SSE 6 | SW 6 | SSW 14 | — | SE 12 | SE 12 | SW 18 | SSE 5 | SSW 16 | E 10 | SE 11 | SW 17 | SE 11 | SW 16 | E 10 | E 10 | SE 12 | SE 12 | SE 12 | SE 12 | SW 16 | E 9 | E 9 |
| kJ | 6 | 6 | 10 | 41 | — | 23 | 22 | 13 | 15 | 229 | 92 | 20 | 76 | 20 | 171 | 65 | 65 | 21 | 21 | 21 | 21 | 171 | 60 | 60 |
Wind waves Height (m) Direction Period (s) | WSW 3 | SW 4 | — | S 6 | SSW 12 | SSW 6 | SSW 6 | SSW 6 | SW 5 | SW 5 | SW 5 | SW 5 | SW 5 | SSE 3 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | SSE 5 | SSE 6 | SSE 6 | SSE 6 | SE 6 |
| kJ | 5 | 3 | — | 18 | 548 | 151 | 115 | 90 | 35 | 22 | 13 | 8 | 6 | 5 | 6 | 12 | 12 | 12 | 24 | 44 | 81 | 93 | 90 | 137 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 0 | 12 | 36 | 2785 | 529 | 69 | 60 | 61 | 36 | 64 | 64 | 88 | 64 | 69 | 64 | 47 | 47 | 47 | 64 | 64 | 61 | 61 | 36 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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