Surf Forecasts:
Mera surf forecast from 20 Aug 2026:
- Best quality surf: Sunday 23 Aug, 6PM (local time) - 3ft (0.9m), 15s period, SSE swell with glassy winds.
- Most powerful swell: Thursday 27 Aug, 6AM (local time) - 16ft (5.0m), 11s period, S swell with 5,327 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 9AM (local time) - 3ft (0.9m), 10s period with E swell.
Best Forecast Surf Conditions for Mera this week:
The surf forecast for Mera over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 23) at 9AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.6m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Mera in the next 16 days are 5.0m 11s and forecast to arrive on Thursday (Aug 27) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Sun 23rd Aug) | 3ft (0.9m) 10s |
| Best Surf | 6PM (Sun 23rd Aug) | 3ft (0.9m) 15s |
| Most Powerful | 6AM (Thu 27th Aug) | 16ft (5.0m) 11s |
Table - best surf conditions forecast for Mera over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 27°C on Thu morning, min 26°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Tue night. Warm (max 27°C on Sun afternoon, min 25°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SE 10 | SE 11 | SE 11 | SE 11 | SSW 9 | SSW 10 | E 10 | E 11 | E 10 | E 10 | SSE 15 | SSE 15 | SSE 16 | SSE 14 | SSE 14 | S 15 | S 14 | S 13 | S 12 | S 11 | S 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 53 | 57 | 56 | 62 | 61 | 83 | 125 | 188 | 202 | 158 | 150 | 1431 | 3455 | 1900 | 2598 | 4878 | 3999 | 3169 | 2482 | 3056 | 2810 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | on | cross-on | on | on | on | on | glassy | glassy | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on |
High Tide | 10:12AM1.08m | 8:13PM1.40m | 8:45PM1.33m | 9:52PM1.26m | 3:52PM1.25m | 00:16AM1.24m | 4:06PM1.31m | 1:45AM1.30m | 4:25PM1.37m | 2:39AM1.39m | 4:44PM1.42m | ||||||||||
Low Tide | 2:05PM0.97m | 4:20AM0.54m | 6:01AM0.54m | 7:29AM0.47m | 8:02PM1.15m | 8:27AM0.38m | 8:54PM1.06m | 9:09AM0.29m | 9:28PM0.96m | 9:44AM0.22m | 9:58PM0.87m | ||||||||||
 |  |  | | | | | |  |  | | | | |  | | |  |  | | | |
 | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:07 | — | — | 5:07 | — | — |
 | — | 6:23 | — | — | 6:22 | — | — | 6:21 | — | — | 6:20 | — | — | 6:19 | — | — | 6:16 | — | — | 6:15 | — |
mm | — | — | — | — | — | — | — | — | 1 | 2 | — | 2 | — | — | — | — | — | 7 | 33 | 16 | 31 |
Temp °C | 27 | 27 | 26 | 26 | 27 | 26 | 27 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 27 | 27 | 27 | 25 | 26 | 27 |
Feels °C | 30 | 29 | 29 | 28 | 28 | 27 | 29 | 28 | 28 | 30 | 32 | 29 | 28 | 28 | 28 | 31 | 30 | 30 | 27 | 24 | 27 |
Swell 1 Height (m) Direction Period (s) | SE 6 | SE 5 | SE 11 | SSW 9 | SSW 9 | SSW 10 | E 10 | E 11 | E 10 | E 10 | E 9 | SSE 15 | SSE 16 | SSE 14 | SSE 14 | S 15 | S 14 | S 13 | E 13 | E 12 | SW 13 |
| kJ | 15 | 14 | 56 | 62 | 61 | 83 | 125 | 188 | 202 | 158 | 87 | 1431 | 3455 | 1900 | 2598 | 4878 | 3999 | 3169 | 157 | 103 | 1021 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 11 | SSW 8 | SE 11 | E 9 | E 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSE 15 | SW 8 | E 12 | SSE 18 | S 17 | E 14 | E 14 | E 13 | E 18 | E 16 | E 15 |
| kJ | 53 | 57 | 22 | 57 | 43 | 47 | 73 | 73 | 54 | 52 | 150 | 57 | 175 | 1652 | 1009 | 324 | 229 | 215 | 55 | 82 | 161 |
Swell 3 Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 8 | SE 5 | SE 11 | SE 11 | SSE 5 | SE 11 | SSE 4 | SSE 4 | SW 8 | E 9 | SW 10 | E 12 | E 15 | SW 10 | SW 10 | SW 11 | — | — | E 12 |
| kJ | 26 | 26 | 24 | 7 | 30 | 30 | 17 | 29 | 6 | 6 | 35 | 58 | 80 | 180 | 275 | 35 | 16 | 18 | — | — | 67 |
Wind waves Height (m) Direction Period (s) | — | — | S 2 | SW 2 | SW 3 | SSW 3 | WSW 3 | S 5 | WSW 3 | — | — | — | — | — | — | — | — | — | S 12 | S 11 | S 10 |
| kJ | — | — | 1 | 1 | 2 | 4 | 2 | 16 | 1 | — | — | — | — | — | — | — | — | — | 2482 | 3056 | 2810 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 64 | 64 | 64 | 70 | 70 | 74 | 36 | 88 | 36 | 0 | 0 | 12 | 36 | 64 | 61 | 501 | 501 | 61 | 14 | 70 | 820 |
Best forecast wave conditions in Chiba | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mera surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Mera Surf forecast
The above surf forecast table for Mera provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mera can be found by selecting the local surf guide option on the grey menu. Our Mera surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Mera) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Mera may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Mera is 9 km (6 miles) from Tateyama. If you plan a holiday in Chiba, look for hotels and other accommodation in Tateyama. Tateyama has rooms for a wide range of budgets as well as car hire and transport links.
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