Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 8 am 23 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
23.6° 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 23 Jun 2026:

  • Best quality surf: Sunday 28 Jun, 3AM (local time) - 23ft (7.0m), 16s period, SW swell with onshore winds.
  • Most powerful swell: Sunday 28 Jun, 3AM (local time) - 23ft (7.0m), 16s period, SW swell with 23,087 kJ wave energy.
  • Next surfable swell (1★+): Thursday 25 Jun, 12AM (local time) - 1.5ft (0.5m), 11s period with SE 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 25) at 12AM. The primary swell is predicted to be 0.5m and 11s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 7.0m 16s and forecast to arrive on Sunday (Jun 28) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 10s period and expected on Wednesday (Jun 24) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Thu 25th Jun)1.5ft (0.5m) 11s
Best Surf 3AM (Sun 28th Jun)23ft (7.0m) 16s
Most Powerful 3AM (Sun 28th Jun)23ft (7.0m) 16s

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 12mm), heaviest on Thu afternoon. Warm (max 24°C on Thu night, min 19°C on Thu afternoon). Winds increasing (calm on Wed night, fresh winds from the SSW by Thu night).

Days 4-6 Weather Summary

Heavy rain (total 80mm), heaviest during Sat morning. Warm (max 25°C on Fri morning, min 21°C on Sat morning). Winds decreasing (stormy winds from the S on Sat night, calm by Sun night).

Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
0
1
2
3
1
0
0
0
1
3
0
2
0
3
2
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)
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.6
SW
15
1
SW
14
1.1
SW
13
2.5
SSW
6
3
SSW
8
1.3
SW
14
1.7
SW
14
1.4
SW
13
7
SSW
10
3
SW
13
2.1
SW
11
1.3
SW
10
1
SW
9
0.9
SW
9
0.6
SE
10
Wave Graph
Metric surfscale
Energy kJ
60
59
55
55
56
55
186
384
458
475
1086
641
1099
683
9867
3165
1054
341
159
110
73
Wind (km/h)
20
NE
15
ENE
10
NE
10
NNE
5
E
5
NW
5
SE
10
ENE
10
SW
40
SW
40
SW
25
SSW
20
WSW
10
ESE
50
WSW
20
W
20
WSW
15
ENE
20
NE
30
ENE
15
E
Wind State
off
off
off
cross-off
cross-off
glassy
glassy
off
on
on
on
on
on
cross-off
on
cross-on
on
off
off
cross-off
cross-off
High Tide
11:30AM1.02m
10:59PM1.28m
1:21PM1.04m
11:41PM1.29m
2:46PM1.12m
00:28AM1.32m
3:44PM1.20m
1:19AM1.34m
4:27PM1.26m
2:08AM1.37m
5:03PM1.31m
2:53AM1.39m
5:36PM1.35m
Low Tide
4:35PM0.76m
6:29AM0.50m
5:36PM0.89m
7:28AM0.39m
6:51PM0.98m
8:17AM0.29m
8:01PM1.01m
9:00AM0.20m
8:58PM1.01m
9:40AM0.14m
9:46PM0.98m
10:17AM0.09m
10:26PM0.95m
cloud
cloud
rain showers
part cloud
part cloud
cloud
light rain
mod rain
light rain
thunderstorm
light rain
rain showers
heavy rain
heavy rain
rain showers
part cloud
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:26
4:26
4:28
4:28
4:28
4:28
4:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:57
6:58
6:58
6:58
6:58
6:58
 mm
1
2
6
3
5
2
2
27
25
19
Temp °C
22
21
21
22
22
22
22
20
24
25
25
22
21
23
25
24
24
24
24
23
22
Feels °C
22
21
21
23
23
25
25
21
23
22
21
20
21
21
11
24
24
28
23
20
21
Swell 1
Height (m)
Direction
Period (s)
0.6
SW
7
1.1
ENE
10
1.3
ENE
10
1.1
ENE
10
1
ENE
9
0.8
ENE
9
0.7
E
8
1
SW
14
1.1
SW
13
0.5
ESE
11
0.2
ESE
18
1.3
SW
14
1.7
SW
14
1.4
SW
13
0.2
ESE
16
3
SW
13
2.1
SW
11
1.3
SW
10
1
SW
9
0.9
SW
9
0.6
SW
8
Energy kJ
27
231
301
235
181
103
66
384
458
68
31
641
1099
683
25
3165
1054
341
159
110
54
Swell 2
Height (m)
Direction
Period (s)
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.6
SSW
13
0.5
SE
10
0.7
S
6
0.2
ENE
10
0.1
NE
10
0.7
SSE
7
0.6
E
8
0.9
SSE
9
1.8
SSE
9
1.4
SSE
8
1.1
SSE
8
0.6
SSE
7
0.7
SE
9
0.6
SE
10
Energy kJ
60
59
55
55
56
55
108
49
38
10
4
48
49
149
516
268
142
35
83
73
Swell 3
Height (m)
Direction
Period (s)
0.1
E
15
0.4
SW
6
0.3
SW
6
0.2
S
5
0.2
SSW
5
0.3
SW
14
0.6
SW
15
0.4
SSW
10
0.6
E
6
0.2
ESE
18
0.4
SE
11
0.5
E
8
0.4
SE
10
0.7
ESE
8
0.2
E
8
0.3
ESE
15
0.3
ESE
15
0.5
SE
9
0.3
ESE
15
0.3
ESE
14
Energy kJ
4
14
6
2
2
33
186
36
27
31
31
33
37
72
5
44
42
41
42
41
Wind waves
Height (m)
Direction
Period (s)
1.1
ENE
10
0.2
SSW
5
0.7
E
8
1.2
SSW
7
2.5
SSW
6
3
SSW
8
1.3
SW
7
7
SSW
10
0.7
ENE
4
1
E
5
1.2
E
5
Energy kJ
231
3
57
135
475
1086
189
9867
13
42
82
Nearest Offshore or Glassy
Rating
(10 max)
1
3
2
2
1
1
2
3
3
3
4
1
1
3
3
5
4
3
2
1
1
Distance (km)
0
204
40
40
36
0
0
0
36
148
88
69
50
0
61
36
33
0
0
204
14
Best forecast wave conditions in Chiba
Rating
(10 max)
1
2
2
2
1
2
3
1
2
3
4
4
3
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
3
2
2
2
4
2
3
4
4
4
4
4
4
4
5
4
3
2
1
1
Header Global
Rating
(10 max)
5
5
7
9
8
5
5
4
5
5
5
5
5
5
5
9
9
7
7
9
6
  • 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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