Mera Surf Break

Lat Long: 34.90° N 139.84° E

Mera Surf Forecast and Surf Report

Issued: 2 am 28 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
27.8°C
0.9° 

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


Mera surf forecast from 27 Aug 2026:

  • Best quality surf: Saturday 29 Aug, 12AM (local time) - 2.5ft (0.7m), 12s period, E swell with cross-offshore winds.
  • Most powerful swell: Wednesday 2 Sep, 9PM (local time) - 4ft (1.2m), 12s period, SSW swell with 392 kJ wave energy.
  • Next surfable swell (1★+): Saturday 29 Aug, 12AM (local time) - 2.5ft (0.7m), 12s 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 Saturday (Aug 29) at 12AM. The primary swell is predicted to be 0.7m and 12s period with a secondary swell of 1.2m and 6s. Another secondary swell of 1.4m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 1.2m 12s and forecast to arrive on Wednesday (Sep 02) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Wednesday (Sep 02) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Sat 29th Aug)2.5ft (0.7m) 12s
Best Surf12AM (Sat 29th Aug)2.5ft (0.7m) 12s
Most Powerful 9PM (Wed 2nd Sep)4ft (1.2m) 12s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Fri night. Warm (max 27°C on Fri morning, min 23°C on Sat night). Winds decreasing (fresh winds from the SW on Fri morning, calm by Sun afternoon).

Days 4-6 Weather Summary

Light rain (total 7mm), mostly falling on Tue morning. Warm (max 28°C on Tue morning, min 26°C on Mon morning). Wind will be generally light.

Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
2
1
0
0
0
0
0
0
0
0
1
1
2
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
SW
6
0.7
E
12
0.7
E
12
0.6
E
12
0.6
E
11
0.5
SW
9
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
9
0.4
ESE
13
0.9
SSW
10
0.9
SSW
10
0.9
E
11
1.1
SSW
10
1.1
SSW
11
1.1
SSW
11
1.2
SSW
12
1.1
SSW
11
1.1
SSW
11
1.2
SSW
11
Wave Graph
Metric surfscale
Energy kJ
175
138
137
98
94
39
26
27
28
31
59
155
167
202
270
270
265
379
297
307
346
Wind (km/h)
40
SW
25
WSW
10
N
20
ENE
15
ENE
20
NNE
10
NNE
5
NNW
5
W
10
SSW
20
SSW
15
SSW
10
SE
15
SSE
15
SE
10
S
20
SSW
20
SW
25
SW
30
SSW
20
SW
Wind State
on
cross-on
cross-off
off
cross-off
off
off
cross-off
glassy
on
on
on
cross
cross
cross
cross-on
cross-on
on
on
on
on
High Tide
5:23PM1.49m
4:39AM1.56m
5:42PM1.51m
5:18AM1.56m
6:00PM1.53m
5:58AM1.53m
6:19PM1.53m
6:42AM1.47m
6:38PM1.53m
7:32AM1.37m
6:58PM1.52m
8:33AM1.25m
7:21PM1.50m
Low Tide
10:45AM0.18m
10:57PM0.67m
11:14AM0.23m
11:27PM0.57m
11:42AM0.31m
11:59PM0.48m
12:10PM0.44m
00:34AM0.40m
12:38PM0.59m
1:12AM0.36m
1:04PM0.75m
1:57AM0.35m
1:29PM0.91m
2:55AM0.37m
cloud
part cloud
light rain
thunderstorm
cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
thunderstorm
clear
thunderstorm
thunderstorm
clear
thunderstorm
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:09
5:09
5:11
5:11
5:11
5:13
5:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:13
6:12
6:10
6:08
6:07
6:07
6:05
 mm
1
2
1
3
2
1
Temp °C
27
27
27
26
26
23
24
24
25
27
27
27
28
28
27
28
28
27
28
28
27
Feels °C
25
27
30
27
27
22
27
27
29
30
28
30
31
31
30
31
31
29
29
28
28
  • 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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