Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 8 am 16 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 16 Jun 2026:

  • Best quality surf: Friday 19 Jun, 12AM (local time) - 3.5ft (1.1m), 8s period, SW swell with glassy winds.
  • Most powerful swell: Sunday 21 Jun, 12AM (local time) - 10ft (3.0m), 9s period, SW swell with 1,401 kJ wave energy.
  • Next surfable swell (1★+): Thursday 18 Jun, 12AM (local time) - 4ft (1.2m), 5s period with S 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 Thursday (Jun 18) at 12AM. The primary swell is predicted to be 1.2m and 5s period with a secondary swell of 0.2m and 10s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 3.0m 9s and forecast to arrive on Sunday (Jun 21) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 10s period and expected on Monday (Jun 22) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Thu 18th Jun)4ft (1.2m) 5s
Best Surf12AM (Fri 19th Jun)3.5ft (1.1m) 8s
Most Powerful12AM (Sun 21st Jun)10ft (3.0m) 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 48mm), heaviest during Thu morning. Warm (max 23°C on Thu afternoon, min 19°C on Tue morning). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 47mm), heaviest during Sun morning. Warm (max 24°C on Fri afternoon, min 21°C on Sun night). Winds increasing (calm on Fri night, strong winds from the SSW by Sun morning).

Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
0
0
0
1
1
1
2
1
0
1
0
0
3
0
0
1
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
E
8
1.4
E
8
1.1
E
8
0.4
SW
7
0.3
SE
11
1.2
S
5
1.6
SSE
7
1.6
SSE
7
1.1
SW
8
0.8
SE
6
0.6
SW
8
0.7
SW
8
0.6
SW
8
1
SW
7
3
SW
9
2.1
SW
9
1.5
SW
10
1.2
SW
9
1
SW
9
0.8
SW
8
0.7
SW
8
Wave Graph
Metric surfscale
Energy kJ
368
278
177
12
18
75
212
233
151
53
45
55
35
104
1401
763
407
230
148
78
60
Wind (km/h)
5
ESE
15
S
15
SSW
10
SSE
25
S
5
W
20
N
10
NW
0
SSE
10
E
10
SE
5
ESE
20
ENE
20
E
10
SE
40
SSW
30
NW
20
NNW
30
N
30
NNE
30
NNE
Wind State
glassy
cross-on
cross-on
cross-on
cross-on
glassy
cross-off
cross
glassy
cross-off
cross
glassy
cross-off
cross-off
cross
cross-on
cross
cross-off
cross-off
off
off
High Tide
6:41PM1.44m
4:43AM1.53m
7:24PM1.41m
5:31AM1.49m
8:05PM1.36m
6:21AM1.42m
8:42PM1.32m
7:16AM1.31m
9:17PM1.29m
8:19AM1.19m
9:50PM1.27m
9:42AM1.08m
10:23PM1.27m
Low Tide
11:20AM-0.20m
11:33PM0.97m
12:07PM-0.17m
00:17AM0.94m
12:52PM-0.08m
1:03AM0.90m
1:36PM0.06m
1:54AM0.85m
2:20PM0.22m
2:52AM0.79m
3:02PM0.41m
4:00AM0.71m
3:46PM0.59m
clear
part cloud
part cloud
clear
part cloud
heavy rain
rain showers
clear
clear
clear
part cloud
part cloud
part cloud
cloud
heavy rain
heavy rain
rain showers
mod rain
light rain
light rain
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>
6:54
6:55
6:55
6:55
6:57
6:57
6:57
 mm
30
18
13
25
2
7
2
1
3
Temp °C
20
21
21
21
21
21
22
23
22
23
24
23
23
23
23
23
22
21
20
19
18
Feels °C
20
19
20
21
19
21
22
24
24
25
26
26
23
23
24
20
20
20
18
15
14
Swell 1
Height (m)
Direction
Period (s)
1.6
E
8
1.4
E
8
1.1
E
8
0.9
ENE
8
0.9
ENE
9
0.7
ENE
10
1.6
SSE
7
1.6
SSE
7
1
SSE
6
0.8
SE
6
0.6
SW
8
0.7
SW
8
0.6
SW
8
0.8
SW
7
2.1
SSW
9
2.1
SW
9
1.5
SW
10
1.2
SW
9
1
SW
9
1.6
ENE
10
1.5
ENE
10
Energy kJ
368
278
177
118
116
98
212
233
75
39
45
55
35
64
673
763
407
230
148
554
424
Swell 2
Height (m)
Direction
Period (s)
0.4
SSW
7
0.4
SSW
8
0.4
SSW
7
0.4
SW
7
0.4
SW
7
0.2
SSE
10
1.3
SW
8
0.9
WSW
8
0.4
ENE
10
0.6
SW
8
0.4
SSE
5
0.4
ESE
7
0.4
SE
10
0.6
E
4
0.6
ENE
10
1.1
SSE
7
1
S
7
0.6
S
7
0.5
SE
10
0.8
SW
8
0.7
SW
8
Energy kJ
18
22
21
12
12
10
206
106
36
53
10
18
34
13
63
140
106
34
49
78
60
Swell 3
Height (m)
Direction
Period (s)
0.2
ESE
13
0.2
ESE
13
0.4
SE
6
0.4
SE
6
0.3
SE
11
0.1
SE
16
0.6
ENE
9
0.4
ENE
10
0.2
SSE
9
0.4
ENE
9
0.4
SE
10
0.4
SE
10
0.3
ESE
8
0.5
ENE
9
0.4
SE
9
0.6
ENE
10
0.6
ENE
10
0.6
SE
10
0.1
E
16
0.5
SE
10
0.5
SE
10
Energy kJ
17
17
10
9
18
10
68
38
8
32
35
25
12
44
31
65
63
60
5
48
49
Wind waves
Height (m)
Direction
Period (s)
0.5
SSE
3
1.2
S
5
0.3
NNW
2
1.1
SW
8
0.4
ENE
3
0.5
E
6
0.8
ENE
9
1
SW
7
3
SW
9
1
NW
4
1
N
5
1.2
NE
9
1.6
ENE
10
Energy kJ
5
75
1
151
2
18
88
104
1401
35
45
242
520
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
1
2
1
4
2
2
1
1
1
2
1
1
1
3
2
1
1
1
Distance (km)
0
64
64
64
64
0
12
12
0
0
36
0
504
1419
14
61
12
12
153
500
50
Best forecast wave conditions in Chiba
Rating
(10 max)
2
2
2
1
2
1
4
2
2
1
1
1
1
3
4
Best forecast wave conditions in Japan
Rating
(10 max)
2
3
2
2
3
2
4
2
2
1
1
1
4
1
4
4
3
4
4
1
1
Header Global
Rating
(10 max)
5
5
4
4
5
4
5
6
6
6
6
7
4
5
4
9
8
6
5
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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