Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 2 am 12 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
22.0° C

Slightly cooler than normal

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


Mera surf forecast from 11 Jun 2026:

  • Best quality surf: Monday 15 Jun, 9PM (local time) - 5.5ft (1.7m), 7s period, ESE swell with offshore winds.
  • Most powerful swell: Thursday 18 Jun, 9PM (local time) - 5.5ft (1.7m), 9s period, SSW swell with 465 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 0.5m and 7s. Another secondary swell of 0.4m 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 1.7m 9s and forecast to arrive on Thursday (Jun 18) 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 1.6m 5s period and expected on Monday (Jun 15) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sat 13th Jun)2ft (0.6m) 9s
Best Surf 9PM (Mon 15th Jun)5.5ft (1.7m) 7s
Most Powerful 9PM (Thu 18th Jun)5.5ft (1.7m) 9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 6mm), mostly falling on Fri morning. Warm (max 23°C on Fri night, min 20°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 5mm), mostly falling on Wed night. Warm (max 22°C on Wed morning, min 18°C on Mon morning). Winds decreasing (fresh winds from the ENE on Mon afternoon, calm by Tue morning).

Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
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
0
1
0
0
0
0
0
0
0
1
2
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
Wave
Height (m)
Direction
Period (s)
0.8
SW
9
0.7
SW
9
0.6
SW
8
0.7
ESE
7
0.8
ESE
8
0.8
E
8
0.8
E
8
0.9
ESE
8
0.8
E
8
0.7
E
8
0.1
SE
14
1.3
ESE
7
1.6
ESE
8
1.6
E
8
1.4
E
8
1.3
E
8
1.2
E
8
1
E
8
1.2
E
9
1
E
9
1.1
SW
8
Wave Graph
Metric surfscale
Energy kJ
95
76
45
57
77
80
90
118
89
66
7
183
333
316
251
239
199
135
239
171
142
Wind (km/h)
10
SSW
20
SSW
10
SW
10
N
10
SW
10
SW
5
SSW
20
S
15
SE
25
ESE
30
ENE
25
NNE
5
NE
15
SSW
20
SW
15
SW
20
SSW
20
SW
15
SE
30
ESE
35
NNW
Wind State
cross-on
on
on
cross-off
on
on
on
cross-on
cross
cross-off
off
cross-off
off
cross-on
on
on
on
on
cross
cross-off
cross-off
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
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
rain showers
thunderstorm
rain showers
part cloud
part cloud
clear
rain showers
rain showers
rain showers
light rain
cloud
clear
clear
clear
clear
part cloud
cloud
light rain
heavy rain
heavy rain
heavy 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
 mm
1
1
1
1
1
1
2
3
14
38
19
Temp °C
22
22
23
21
22
22
22
22
21
19
20
19
20
21
21
22
22
22
19
21
21
Feels °C
22
21
22
21
22
22
24
22
21
16
16
16
20
20
20
21
21
21
18
18
21
Swell 1
Height (m)
Direction
Period (s)
0.8
SW
9
0.7
SW
9
0.6
SW
8
0.7
ESE
7
0.8
ESE
8
0.8
E
8
0.8
E
8
0.9
ESE
8
0.8
E
8
0.7
E
8
0.1
SE
14
1.3
ESE
7
1.6
ESE
8
1.6
E
8
1.4
E
8
1.3
E
8
1.2
E
8
1
E
8
0.4
SW
7
1
E
9
1.1
SW
8
Energy kJ
95
76
45
57
77
80
90
118
89
66
7
183
333
316
251
239
199
135
14
164
142
Swell 2
Height (m)
Direction
Period (s)
0.8
SSE
7
0.5
SSE
7
0.3
SSW
11
0.6
SW
8
0.6
SW
8
0.6
SW
8
0.4
SSE
6
0.3
SW
7
0.3
SW
7
0.1
SW
7
0.1
SE
9
0.2
ESE
13
0.2
ESE
13
0.4
SSW
8
0.4
SW
7
0.4
SW
7
0.3
SW
7
0.2
SSE
10
0.2
SSE
10
0.9
WSW
10
0.9
E
9
Energy kJ
54
26
23
57
43
41
13
9
7
2
3
17
17
24
13
12
7
10
10
171
130
Swell 3
Height (m)
Direction
Period (s)
0.4
ENE
6
0.4
ENE
6
0.3
E
5
0.5
S
7
0.1
E
16
0.5
SSE
6
0.4
SW
8
0.2
ESE
15
0.2
SSE
6
0.1
SE
14
0.1
SW
6
0.1
S
22
0.1
SE
21
0.2
ESE
13
0.1
SE
20
0.2
S
6
0.1
SE
18
0.1
SE
16
0.2
WSW
11
0.9
SSE
5
0.7
SE
6
Energy kJ
14
14
5
24
5
23
20
21
3
8
2
9
18
17
15
3
12
10
12
41
32
Wind waves
Height (m)
Direction
Period (s)
0.7
S
6
0.6
S
7
0.6
S
6
0.3
SSE
6
0.4
SE
4
1.1
SE
5
1.6
ESE
6
1.1
ENE
8
0.5
N
4
0.5
S
7
1.2
E
9
0.6
NNW
3
Energy kJ
37
34
30
7
3
55
173
159
6
26
239
9
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
2
1
2
2
2
2
2
2
2
1
1
1
Distance (km)
36
64
33
0
36
36
36
64
64
483
483
33
0
64
64
70
64
64
14
483
73
Best forecast wave conditions in Chiba
Rating
(10 max)
1
1
1
1
1
1
1
1
1
2
3
2
2
2
2
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
1
1
1
1
1
1
1
1
2
2
4
3
2
2
2
2
3
1
1
2
Header Global
Rating
(10 max)
6
6
9
5
5
5
4
7
5
9
4
5
5
5
5
5
5
4
5
6
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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