Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 8 pm 12 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
23.0° C

Normal for this time of year

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


Mera surf forecast from 12 Jun 2026:

  • Best quality surf: Tuesday 16 Jun, 12PM (local time) - 5.5ft (1.7m), 9s period, E swell with cross-offshore winds.
  • Most powerful swell: Tuesday 16 Jun, 12AM (local time) - 7.5ft (2.3m), 9s period, E swell with 828 kJ wave energy.
  • Next surfable swell (1★+): Saturday 13 Jun, 6AM (local time) - 2ft (0.6m), 9s period with SW 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 (Jun 13) at 6AM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.5m and 7s. Another secondary swell of 0.5m and 4s 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 2.3m 9s and forecast to arrive on Tuesday (Jun 16) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 7s period and expected on Thursday (Jun 18) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sat 13th Jun)2ft (0.6m) 9s
Best Surf12PM (Tue 16th Jun)5.5ft (1.7m) 9s
Most Powerful12AM (Tue 16th Jun)7.5ft (2.3m) 9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 20mm), heaviest during Mon morning. Warm (max 23°C on Sat afternoon, min 17°C on Mon morning). Winds increasing (light winds from the NW on Fri night, strong winds from the ENE by Mon morning).

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Thu afternoon. Warm (max 22°C on Wed morning, min 17°C on Mon night). Winds decreasing (strong winds from the N on Mon night, light winds from the SSW by Tue night).

Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Fri
19
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
1
0
0
0
0
0
0
1
0
2
1
0
0
0
0
0
0
0
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
SW
8
0.6
SW
8
0.7
ESE
8
0.7
E
8
0.7
E
8
0.7
E
9
0.8
E
8
1.1
E
8
2.3
E
7
2.3
E
9
1.8
E
9
1.7
E
9
0.5
SW
8
0.4
SW
7
0.4
SW
7
0.3
SW
7
0.9
SSE
5
0.3
SE
10
1.3
SW
9
0.7
SW
8
0.4
SSE
10
Wave Graph
Metric surfscale
Energy kJ
45
57
60
60
66
71
91
173
483
828
521
455
28
19
13
10
35
15
269
68
39
Wind (km/h)
15
SW
5
NNW
20
SSW
20
SW
10
SSW
20
S
20
SE
35
E
40
NE
40
N
25
N
10
SSE
10
SSW
10
S
20
S
20
S
20
SE
20
ESE
30
WSW
10
NE
5
ENE
Wind State
on
cross-off
on
on
cross-on
cross-on
cross
cross-off
off
cross-off
cross-off
cross-on
on
cross-on
cross-on
cross-on
cross
cross-off
on
off
cross-off
High Tide
1:38AM1.39m
4:13PM1.36m
2:24AM1.45m
5:06PM1.42m
3:10AM1.50m
5:55PM1.45m
3:57AM1.53m
6:41PM1.44m
4:43AM1.53m
7:24PM1.41m
5:31AM1.49m
8:05PM1.36m
6:21AM1.42m
Low Tide
8:58AM0.03m
9:10PM0.96m
9:46AM-0.10m
10:01PM0.98m
10:33AM-0.18m
10:48PM0.99m
11:20AM-0.20m
11:33PM0.97m
12:07PM-0.17m
00:17AM0.94m
12:52PM-0.08m
1:03AM0.90m
1:36PM0.06m
rain showers
cloud
clear
clear
part cloud
cloud
light rain
mod rain
light rain
rain showers
clear
clear
clear
clear
clear
part cloud
light rain
light rain
heavy rain
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:26
4:26
4:26
4:26
4:26
4:26
4:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:53
6:54
6:54
6:54
6:55
6:55
6:55
 mm
2
4
9
5
1
1
4
26
1
Temp °C
22
22
23
22
22
22
22
18
18
18
21
21
21
22
22
21
22
21
22
21
21
Feels °C
20
23
22
21
23
21
23
12
12
12
21
21
21
21
20
19
21
20
21
23
23
Swell 1
Height (m)
Direction
Period (s)
0.6
SW
8
0.6
SW
8
0.7
ESE
8
0.7
E
8
0.7
E
8
0.7
E
9
0.8
E
8
0.6
SSE
5
0.3
SSE
7
2.3
E
9
1.8
E
9
1.7
E
9
1.4
ENE
9
1.1
ENE
9
1
ENE
9
0.9
ENE
9
0.8
ENE
9
0.3
SE
10
1.3
SW
9
0.7
SW
8
0.5
SW
8
Energy kJ
45
57
60
60
66
71
91
17
9
828
521
455
326
206
173
119
98
15
269
68
31
Swell 2
Height (m)
Direction
Period (s)
0.4
SSE
6
0.6
ESE
7
0.6
SW
8
0.5
SSE
7
0.6
S
6
0.4
SW
7
0.3
SW
7
0.1
SW
7
0.1
SE
14
0.7
SSE
8
0.6
SSW
9
0.4
SSW
8
0.5
SW
8
0.4
SW
7
0.4
SW
7
0.3
SW
7
0.3
SE
10
0.3
SW
7
1.1
SSE
7
0.4
SSE
6
0.4
SSE
10
Energy kJ
15
38
43
25
25
14
7
2
7
70
59
25
28
19
13
7
16
8
108
12
39
Swell 3
Height (m)
Direction
Period (s)
0.3
E
6
0.5
S
7
0.5
S
7
0.4
SW
8
0.4
SW
8
0.2
ESE
15
0.2
ESE
15
0.1
SE
9
0.1
SW
7
0.1
S
22
0.4
SSE
8
0.3
NNW
4
0.1
SE
20
0.2
SSE
9
0.2
SSE
10
0.2
SSE
10
0.3
SW
8
0.1
SE
15
0.5
ENE
9
0.4
SE
8
0.3
SW
11
Energy kJ
5
26
23
23
15
21
21
3
2
9
23
3
15
8
10
10
9
9
47
14
20
Wind waves
Height (m)
Direction
Period (s)
0.4
SSW
3
0.4
WSW
4
0.4
SW
5
0.6
SW
4
0.4
SW
4
0.5
S
6
0.5
SSE
4
1.1
E
8
2.3
E
7
1.6
N
5
0.9
N
5
0.3
SW
3
0.4
SSW
3
0.9
SSE
5
1.8
ESE
6
1.9
ENE
7
2.1
NNE
8
2.1
NE
9
Energy kJ
4
7
8
14
4
18
8
173
483
136
34
1
3
35
193
313
558
671
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
3
3
1
1
1
2
2
2
1
1
1
2
1
1
Distance (km)
36
0
88
70
64
64
70
501
244
70
43
36
35
64
64
64
64
47
36
0
0
Best forecast wave conditions in Chiba
Rating
(10 max)
1
1
1
1
1
1
4
2
2
2
1
1
1
3
1
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
2
4
4
3
2
1
2
2
2
2
1
1
3
3
2
Header Global
Rating
(10 max)
4
8
5
5
5
4
5
9
5
5
5
5
5
6
5
4
5
4
6
5
5
  • 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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