Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 8 pm 16 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
22.4° 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 16 Jun 2026:

  • Best quality surf: Monday 22 Jun, 12PM (local time) - 5.5ft (1.7m), 9s period, E swell with offshore winds.
  • Most powerful swell: Sunday 21 Jun, 12AM (local time) - 8ft (2.5m), 8s period, SW swell with 919 kJ wave energy.
  • Next surfable swell (1★+): Thursday 18 Jun, 9AM (local time) - 2.5ft (0.8m), 8s 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 Thursday (Jun 18) at 9AM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.9m and 6s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 2.5m 8s and forecast to arrive on Sunday (Jun 21) at 12AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 10s period and expected on Sunday (Jun 21) at 6PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Thu 18th Jun)2.5ft (0.8m) 8s
Best Surf12PM (Mon 22nd Jun)5.5ft (1.7m) 9s
Most Powerful12AM (Sun 21st Jun)8ft (2.5m) 8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 10mm), heaviest on Wed night. Warm (max 23°C on Thu morning, min 20°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 88mm), heaviest during Sat afternoon. Warm (max 23°C on Fri night, min 19°C on Sun night). Winds increasing (light winds from the S on Fri night, strong winds from the NNW by Sun morning).

Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tue
23
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
0
0
0
1
1
1
1
0
0
0
1
0
0
0
0
1
0
1
0
2
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)
1.1
E
8
0.4
SW
7
0.3
SE
11
0.8
SSE
5
0.8
SW
8
0.8
SW
8
1
SE
6
1
SSW
8
0.7
SW
8
0.7
SW
8
0.4
SE
10
0.9
SSE
10
2.5
SW
8
1.6
SW
9
1.2
SW
9
0.8
SW
9
0.6
SW
8
0.5
SE
10
1.5
E
9
1.4
E
9
1.1
E
9
Wave Graph
Metric surfscale
Energy kJ
177
12
18
25
77
79
73
137
57
61
34
164
919
396
235
104
54
49
383
325
203
Wind (km/h)
15
SE
10
SSE
20
SSE
10
ESE
20
NNE
5
NNE
5
ENE
0
SE
20
SSW
15
SSW
15
SE
25
ESE
25
SW
45
NNW
35
N
35
NNE
25
NNE
25
ENE
20
SE
15
SE
10
NE
Wind State
cross
cross-on
cross
cross-off
off
off
off
glassy
cross-on
cross-on
cross
cross-off
on
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross
off
High Tide
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
11:30AM1.02m
Low Tide
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
5:17AM0.61m
4:35PM0.76m
part cloud
part cloud
cloud
rain showers
part cloud
part cloud
clear
clear
clear
part cloud
thunderstorm
heavy rain
heavy rain
rain showers
cloud
part cloud
rain showers
light rain
mod 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
6:57
 mm
10
2
43
38
1
1
3
9
5
3
Temp °C
21
22
21
21
23
23
22
23
23
23
23
22
22
21
21
20
22
21
21
22
22
Feels °C
21
22
19
22
24
25
24
25
23
24
25
22
19
15
17
15
20
19
20
23
24
Swell 1
Height (m)
Direction
Period (s)
1.1
E
8
0.9
ENE
8
0.9
ENE
9
0.7
ENE
10
0.9
SE
6
1
SE
6
1
SE
6
1
SSW
8
0.7
SW
8
0.7
SW
8
0.5
SW
7
0.5
SW
7
1.8
SW
8
1.6
SW
9
1.2
SW
9
0.8
SW
9
0.6
SW
8
1.6
E
9
1.5
E
9
1.4
E
9
1.1
E
9
Energy kJ
177
118
119
94
54
71
73
137
57
61
27
23
448
396
235
104
54
449
383
325
203
Swell 2
Height (m)
Direction
Period (s)
0.4
SSW
7
0.4
SW
7
0.4
SW
7
0.4
SW
8
0.8
SW
8
0.8
SW
8
0.6
SW
7
0.4
ENE
9
0.4
ENE
9
0.4
ENE
9
0.4
SE
10
0.3
ENE
8
0.4
ESE
6
0.4
SE
9
0.3
SE
9
0.4
SE
10
0.4
SE
10
0.5
SW
8
0.5
SE
10
0.5
SE
11
0.6
SSE
5
Energy kJ
21
12
12
24
77
79
42
32
26
26
34
14
10
29
13
35
35
31
51
61
17
Swell 3
Height (m)
Direction
Period (s)
0.4
SE
6
0.4
SE
6
0.3
SE
11
0.2
SSE
10
0.6
ENE
9
0.6
ENE
9
0.5
SW
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.3
ENE
9
0.2
SSE
12
0.4
SE
9
0.3
SE
11
0.3
SE
11
0.1
E
16
0.1
E
16
0.5
SE
10
0.4
SW
8
0.3
SW
7
0.5
SE
11
Energy kJ
11
9
18
10
68
65
44
26
35
25
15
15
31
20
19
5
5
49
20
8
59
Wind waves
Height (m)
Direction
Period (s)
0.5
SE
3
0.8
SSE
5
0.5
ENE
4
0.4
ENE
4
0.5
S
5
0.4
S
5
0.4
S
5
0.9
SSE
10
2.5
SW
8
1.1
NNE
4
2.2
ENE
9
2.1
ENE
9
1.8
ENE
9
Energy kJ
5
25
7
7
14
8
7
164
919
47
766
745
552
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
2
Distance (km)
47
64
64
64
0
0
0
0
64
64
64
88
60
88
204
483
0
153
73
36
0
Best forecast wave conditions in Chiba
Rating
(10 max)
2
1
2
1
1
1
1
1
1
1
1
3
1
2
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
1
1
1
2
1
1
1
1
2
4
3
1
2
2
2
2
2
2
Header Global
Rating
(10 max)
4
4
5
4
5
9
6
6
6
7
7
4
5
8
9
5
5
5
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
How to use the Wavefinder
submit an eyeball surf report

Quick surf report for Mera:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mera surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest