Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 8 pm 26 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
23.3° 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 26 Jun 2026:

  • Best quality surf: Sunday 28 Jun, 9PM (local time) - 4ft (1.2m), 10s period, SW swell with offshore winds.
  • Most powerful swell: Sunday 28 Jun, 12AM (local time) - 13ft (4.0m), 12s period, SW swell with 4,048 kJ wave energy.
  • Next surfable swell (1★+): Sunday 28 Jun, 9PM (local time) - 4ft (1.2m), 10s 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 Sunday (Jun 28) at 9PM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 1.1m and 8s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 4.0m 12s and forecast to arrive on Sunday (Jun 28) 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 1.9m 6s period and expected on Wednesday (Jul 01) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 28th Jun)4ft (1.2m) 10s
Best Surf 9PM (Sun 28th Jun)4ft (1.2m) 10s
Most Powerful12AM (Sun 28th Jun)13ft (4.0m) 12s

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 175mm), heaviest during Sat afternoon. Warm (max 25°C on Sat night, min 21°C on Sun night). Winds decreasing (strong winds from the SSW on Sat night, light winds from the ENE by Sun night).

Days 5-7 Weather Summary

Heavy rain (total 33mm), heaviest during Wed afternoon. Warm (max 23°C on Tue morning, min 21°C on Mon night). Winds increasing (calm on Tue night, fresh winds from the NNE by Wed night).

Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Fri
3
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
8
2
2
2
2
2
1
1
1
1
2
1
0
1
1
1
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)
1.1
SW
13
3.5
SW
9
3
SSW
9
4
SW
12
2.5
SSW
11
2.1
SSW
10
1.1
SW
9
0.9
SW
9
0.8
SSE
9
0.7
SE
9
0.7
SE
9
0.7
SE
9
0.7
SE
9
1.1
ESE
9
1.4
SW
9
0.9
SSW
7
0.6
SW
7
0.5
ESE
8
0.9
E
8
1.4
ESE
6
1.4
ESE
7
Wave Graph
Metric surfscale
Energy kJ
444
1927
1210
4048
1677
898
225
126
103
86
81
81
81
188
319
97
36
40
113
155
191
Wind (km/h)
30
SSW
30
SW
40
S
20
NNW
15
SSW
15
ESE
15
NE
15
NE
10
E
15
ENE
10
ENE
10
ESE
5
SSE
5
NE
30
E
25
N
15
NE
10
ENE
15
ENE
10
ENE
15
SSE
Wind State
on
on
cross-on
cross-off
on
cross-off
off
off
cross-off
off
off
cross-off
glassy
glassy
cross-off
cross-off
off
cross-off
cross-off
off
cross
High Tide
1:19AM1.34m
4:27PM1.26m
2:08AM1.37m
5:03PM1.31m
2:53AM1.39m
5:36PM1.35m
3:34AM1.41m
6:07PM1.37m
4:12AM1.43m
6:38PM1.37m
4:49AM1.43m
7:09PM1.37m
5:26AM1.42m
Low Tide
9:00AM0.20m
8:58PM1.01m
9:40AM0.14m
9:46PM0.98m
10:17AM0.09m
10:26PM0.95m
10:52AM0.05m
11:03PM0.92m
11:27AM0.04m
11:39PM0.90m
12:00PM0.05m
00:14AM0.87m
12:34PM0.08m
thunderstorm
heavy rain
heavy rain
thunderstorm
rain showers
light rain
light rain
cloud
part cloud
clear
clear
part cloud
light rain
mod rain
heavy rain
cloud
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:28
4:28
4:28
4:28
4:30
4:30
4:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:58
6:58
6:58
6:58
6:58
6:58
6:58
 mm
42
13
78
35
1
3
3
5
10
18
Temp °C
24
22
23
25
23
22
22
23
23
22
23
23
23
22
21
22
23
23
22
23
24
Feels °C
23
21
20
22
25
23
25
25
24
23
25
24
26
23
19
19
24
25
23
25
25
Swell 1
Height (m)
Direction
Period (s)
1.1
SW
13
3
SSW
9
0.3
E
8
3
S
10
2.5
SSW
11
2.1
SSW
10
1.1
SW
9
0.9
SW
9
0.8
SW
8
0.7
SE
9
0.7
SE
9
0.7
SE
9
0.7
SE
9
0.5
SW
7
1.4
SW
9
0.9
SSW
7
0.7
E
6
0.5
ESE
8
0.7
SE
5
0.4
SW
7
0.4
SW
7
Energy kJ
444
1274
12
2072
1677
898
225
126
80
86
81
81
81
25
287
97
36
40
28
19
13
Swell 2
Height (m)
Direction
Period (s)
0.4
SE
10
1.2
SW
13
0.3
ESE
16
3
SW
12
0.3
E
9
0.3
ESE
15
1
SSE
8
0.6
SSE
7
0.8
SSE
9
0.7
SW
8
0.6
SW
8
0.5
SW
8
0.4
SW
7
0.3
ESE
13
0.3
ESE
13
0.9
E
6
0.6
SW
7
0.5
SW
7
0.4
SW
7
0.2
ESE
12
0.2
ESE
12
Energy kJ
37
473
51
2665
14
44
117
36
103
63
35
28
19
35
34
50
33
26
14
14
14
Swell 3
Height (m)
Direction
Period (s)
0.2
ENE
10
0.3
ESE
16
0.1
NE
9
0.3
E
9
0.2
ESE
16
0.2
E
8
0.3
ESE
15
0.5
SE
9
0.3
ESE
15
0.6
E
5
0.3
ESE
14
0.3
ENE
5
0.3
ESE
13
0.1
NE
10
0.6
ESE
9
0.4
ESE
9
0.2
ESE
12
0.4
SE
9
0.1
NE
9
0.1
NE
12
Energy kJ
10
51
3
14
25
6
42
41
42
21
36
4
35
4
52
29
15
22
3
5
Wind waves
Height (m)
Direction
Period (s)
1.3
SSW
6
3.5
SW
9
3
SSW
9
4
SW
12
0.4
NE
6
0.6
ENE
5
0.4
ENE
5
1.1
ESE
9
2
ESE
6
0.2
N
4
0.9
ESE
6
0.9
E
8
1.4
ESE
6
1.4
ESE
7
Energy kJ
136
1927
1210
4048
14
17
8
188
319
1
45
113
155
191
Nearest Offshore or Glassy
Rating
(10 max)
1
4
4
4
2
2
2
2
2
1
1
1
1
2
1
1
1
1
1
1
1
Distance (km)
60
36
61
55
50
70
0
0
0
0
0
0
0
0
39
50
0
0
0
0
47
Best forecast wave conditions in Chiba
Rating
(10 max)
3
4
2
2
2
2
1
1
1
1
2
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
3
4
4
4
4
3
2
2
2
1
1
2
3
2
2
3
1
1
1
2
1
Header Global
Rating
(10 max)
7
5
6
5
4
7
5
6
6
7
6
5
5
5
5
5
4
5
7
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