Mera Surf Break

Lat Long: 34.90° N 139.84° E

Mera Surf Forecast and Surf Report

Issued: 8 pm 08 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
27.4° C
0.6° 

Mera surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Mera surf forecast from 8 Aug 2026:

  • Best quality surf: Sunday 9 Aug, 3AM (local time) - 6ft (1.9m), 14s period, ESE swell with glassy winds.
  • Most powerful swell: Monday 10 Aug, 3PM (local time) - 7.5ft (2.3m), 12s period, E swell with 1,444 kJ wave energy.
  • Next surfable swell (1★+): Sunday 9 Aug, 3AM (local time) - 6ft (1.9m), 14s period with ESE 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 09) at 3AM. The primary swell is predicted to be 1.9m and 14s period with a secondary swell of 1.3m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 2.3m 12s and forecast to arrive on Monday (Aug 10) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 10s period and expected on Friday (Aug 14) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sun 9th Aug)6ft (1.9m) 14s
Best Surf 3AM (Sun 9th Aug)6ft (1.9m) 14s
Most Powerful 3PM (Mon 10th Aug)7.5ft (2.3m) 12s

Table - best surf conditions forecast for Mera over the next 16 days.


Short Range Forecast

Light rain (total 3mm), mostly falling on Tue morning. Warm (max 27°C on Sun morning, min 22°C on Tue morning). Winds increasing (calm on Sun morning, fresh winds from the SW by Tue afternoon).

Days 5-7 Weather Summary

Heavy rain (total 44mm), heaviest during Thu night. Warm (max 28°C on Thu afternoon, min 24°C on Thu night). Mainly fresh winds.

Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
4
4
4
4
4
4
2
0
0
1
2
2
2
1
3
0
2
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
ESE
14
1.9
ESE
13
1.9
E
13
1.8
E
12
2
E
12
2.3
E
12
1.9
E
11
1.8
E
11
1.8
E
12
0.8
SW
11
1.1
SW
11
1.2
SSW
11
1
SSW
11
1.1
E
10
1.2
E
10
1.5
E
10
0.7
SW
9
1.8
E
10
2.2
E
10
Wave Graph
Metric surfscale
Energy kJ
1206
1308
1226
957
1111
1444
819
790
909
155
278
340
238
230
273
431
90
696
938
Wind (km/h)
10
SSE
5
ENE
5
SE
10
NNE
20
NNE
15
ENE
20
NNE
15
WSW
35
SW
25
S
20
ESE
15
E
15
ENE
20
NE
20
ENE
20
ENE
30
NNE
20
ENE
20
NE
Wind State
cross-on
glassy
glassy
off
off
cross-off
off
cross-on
on
cross-on
cross-off
cross-off
off
off
cross-off
off
off
cross-off
off
High Tide
10:52PM1.37m
3:58PM1.33m
00:44AM1.39m
4:28PM1.41m
2:08AM1.46m
4:56PM1.46m
3:10AM1.54m
5:22PM1.49m
4:02AM1.60m
5:47PM1.51m
4:50AM1.61m
6:10PM1.51m
Low Tide
7:39AM0.25m
8:05PM1.20m
8:42AM0.13m
9:11PM1.12m
9:34AM0.04m
9:54PM1.01m
10:19AM0.00m
10:33PM0.88m
10:58AM0.02m
11:09PM0.76m
11:34AM0.10m
11:45PM0.65m
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
light rain
light rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
mod rain
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:54
4:56
4:56
4:56
4:58
4:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:36
6:35
6:34
6:32
6:31
6:30
 mm
2
1
6
6
5
6
1
12
2
6
12
Temp °C
26
27
27
26
27
27
25
24
26
27
27
27
26
27
28
26
28
27
26
Feels °C
29
31
30
28
28
28
24
23
24
25
28
28
28
28
30
27
29
28
27
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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