Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 2 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: Saturday 13 Jun, 3AM (local time) - 2ft (0.6m), 9s period, SW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 16 Jun, 12AM (local time) - 8ft (2.5m), 9s period, E swell with 1,132 kJ wave energy.
  • Next surfable swell (1★+): Saturday 13 Jun, 3AM (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 3AM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.4m and 6s. 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 2.5m 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 2.5m 8s period and expected on Monday (Jun 15) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sat 13th Jun)2ft (0.6m) 9s
Best Surf 3AM (Sat 13th Jun)2ft (0.6m) 9s
Most Powerful12AM (Tue 16th Jun)8ft (2.5m) 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 Fri night, min 17°C on Mon morning). Winds increasing (calm on Sat morning, fresh winds from the NE by Mon morning).

Days 5-7 Weather Summary

Heavy rain (total 40mm), heaviest during Wed night. Warm (max 22°C on Wed afternoon, min 17°C on Mon afternoon). Winds increasing (light winds from the NW on Tue morning, strong winds from the SSW by Thu morning).

Fri
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
0
1
0
0
0
0
0
0
1
1
2
0
0
0
0
0
0
0
0
0
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)
0.7
SW
9
0.6
SW
8
0.6
SW
8
0.7
ESE
8
0.7
E
8
0.8
E
9
0.8
E
9
0.8
E
8
0.1
SE
14
2.3
E
7
2.5
E
9
1.9
E
9
0.6
SSW
8
0.5
SW
8
0.4
SW
8
0.4
SW
8
0.9
E
8
1.2
E
8
2.2
SSW
8
0.9
SW
8
0.9
SW
8
Wave Graph
Metric surfscale
Energy kJ
76
45
57
60
61
94
94
91
8
494
1132
588
44
28
20
20
113
201
525
104
104
Wind (km/h)
20
SSW
15
SW
5
NNW
15
SSW
15
SSW
10
S
20
S
15
SE
30
E
40
NE
40
N
20
N
10
SSW
20
SW
20
SSW
25
S
25
S
45
S
45
SSW
50
SW
30
SW
Wind State
on
on
glassy
on
on
cross-on
cross-on
cross
cross-off
off
cross-off
cross-off
on
on
cross-on
cross-on
cross-on
cross-on
on
on
on
High Tide
3:12PM1.26m
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
8:11PM0.91m
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
thunderstorm
rain showers
cloud
clear
clear
part cloud
part cloud
light rain
heavy rain
heavy rain
rain showers
clear
clear
clear
clear
part cloud
heavy rain
mod rain
light rain
part cloud
cloud
<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
1
2
5
12
13
2
17
8
5
Temp °C
22
23
21
23
22
22
22
21
18
18
18
21
21
21
21
22
22
22
23
23
23
Feels °C
21
22
23
22
22
24
22
21
14
12
12
21
21
20
20
20
19
17
18
17
22
Swell 1
Height (m)
Direction
Period (s)
0.7
SW
9
0.6
SW
8
0.6
SW
8
0.7
ESE
8
0.7
E
8
0.8
E
9
0.8
E
9
0.8
E
8
0.1
SW
7
0.2
ESE
13
2.5
E
9
1.9
E
9
1.6
E
9
1.3
ENE
9
1
ENE
9
1
E
9
0.9
E
8
0.5
SW
7
2.2
SSW
8
0.9
SW
8
0.9
SW
8
Energy kJ
76
45
57
60
61
94
94
91
2
17
1132
588
412
283
166
151
113
25
525
104
104
Swell 2
Height (m)
Direction
Period (s)
0.6
SSE
7
0.3
E
6
0.6
ESE
7
0.6
SW
8
0.4
SW
8
0.5
S
6
0.3
SW
7
0.3
SW
7
0.1
SE
9
0.1
SW
7
0.6
S
8
0.8
SSW
9
0.6
SSW
8
0.5
SW
8
0.4
SW
8
0.4
SW
8
0.4
SW
8
0.3
SE
10
0.6
ENE
9
0.8
SSE
6
0.5
ENE
9
Energy kJ
35
5
38
43
23
19
9
7
3
2
50
94
44
28
20
20
14
16
59
41
44
Swell 3
Height (m)
Direction
Period (s)
0.4
ENE
6
0.3
SSW
11
0.5
S
7
0.1
E
16
0.1
E
16
0.4
SW
8
0.2
ESE
15
0.2
ESE
15
0.1
SE
14
0.1
S
24
0.1
S
22
0.7
SSE
8
0.4
SSE
7
0.3
SSE
6
0.2
SSE
6
0.2
SSE
5
0.2
SSE
10
0.1
SE
16
0.2
SSE
9
0.5
ENE
9
0.5
SSE
6
Energy kJ
14
23
26
5
5
15
21
21
8
11
9
54
16
8
3
3
10
10
9
45
17
Wind waves
Height (m)
Direction
Period (s)
0.2
SSW
2
0.7
S
6
0.6
S
7
0.7
S
7
0.4
SSE
6
0.4
SSE
6
1.4
ESE
5
2.3
E
7
1.3
N
5
1
N
5
0.2
SSE
2
1.2
E
8
0.8
NNW
4
0.5
N
4
0.4
NE
3
Energy kJ
1
38
32
42
12
12
97
494
85
48
1
201
20
7
3
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
2
3
1
1
3
2
2
2
1
1
1
3
1
Distance (km)
64
36
0
70
64
36
64
64
521
483
148
33
64
64
64
64
70
529
504
500
36
Best forecast wave conditions in Chiba
Rating
(10 max)
1
1
1
1
1
1
1
1
4
3
2
2
2
1
2
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
1
2
3
3
3
4
3
2
2
2
3
1
1
4
2
Header Global
Rating
(10 max)
9
4
7
5
5
4
4
5
9
5
5
5
5
4
8
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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