Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 2 pm 27 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
23.8° 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 27 Jun 2026:

  • Best quality surf: Sunday 28 Jun, 6AM (local time) - 10ft (3.0m), 12s period, SSW swell with glassy winds.
  • Most powerful swell: Sunday 28 Jun, 3AM (local time) - 11ft (3.5m), 12s period, SSW swell with 3,129 kJ wave energy.
  • Next surfable swell (1★+): Sunday 28 Jun, 6AM (local time) - 10ft (3.0m), 12s period with SSW 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 6AM. The primary swell is predicted to be 3.0m and 12s period with a secondary swell of 0.2m and 16s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 3.5m 12s and forecast to arrive on Sunday (Jun 28) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Thursday (Jul 02) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sun 28th Jun)10ft (3.0m) 12s
Best Surf 6AM (Sun 28th Jun)10ft (3.0m) 12s
Most Powerful 3AM (Sun 28th Jun)11ft (3.5m) 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 57mm), heaviest during Sat afternoon. Warm (max 24°C on Sat afternoon, min 21°C on Sun morning). Winds decreasing (strong winds from the SSW on Sat afternoon, calm by Sat night).

Days 5-7 Weather Summary

Heavy rain (total 35mm), heaviest during Wed morning. Warm (max 24°C on Tue afternoon, min 21°C on Thu night). Wind will be generally light.

Sat
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
4
3
1
1
1
0
1
1
0
0
0
0
1
1
1
1
1
0
0
0
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)
3.5
SSW
8
2.5
S
11
2.5
SSW
11
1.6
SW
10
1.2
SW
9
0.9
SW
8
0.8
SSE
9
0.7
SE
9
0.7
SE
9
0.7
SE
9
1.8
SW
7
1.7
SW
8
1.1
SW
8
1.3
WSW
8
0.6
ESE
9
1.1
SW
8
0.7
SW
7
0.6
SW
7
0.6
SW
7
0.5
SW
7
0.4
SW
7
Wave Graph
Metric surfscale
Energy kJ
1611
1736
1684
527
241
118
103
88
81
81
295
381
157
208
51
129
54
44
32
23
17
Wind (km/h)
50
SSW
20
N
10
SE
25
ESE
10
NW
10
NNE
10
SE
10
E
10
E
15
S
25
WSW
20
SSW
15
S
10
NW
10
NE
15
ENE
20
NE
15
NE
15
ENE
10
ENE
10
ENE
Wind State
cross-on
cross-off
cross
cross-off
cross
off
cross
cross-off
cross-off
cross-on
on
on
cross-on
cross
off
off
off
off
off
cross-off
cross-off
High Tide
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
7:37PM1.36m
6:04AM1.39m
Low Tide
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
00:49AM0.84m
heavy rain
rain showers
rain showers
mod rain
rain showers
part cloud
clear
part cloud
part cloud
cloud
mod rain
heavy rain
heavy rain
light rain
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:28
4:28
4:28
4:30
4:30
4:31
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
38
1
4
9
5
6
14
12
3
Temp °C
24
23
23
22
22
22
23
23
24
24
23
22
23
23
24
24
22
22
22
22
23
Feels °C
20
25
25
21
26
24
25
25
26
26
23
23
26
26
25
25
22
23
23
23
24
Swell 1
Height (m)
Direction
Period (s)
0.3
ESE
16
2.5
S
11
2.5
SSW
11
1.6
SW
10
1.2
SW
9
0.9
SW
8
0.8
SSE
9
0.7
SE
9
0.7
SE
9
0.8
SW
7
0.6
SE
9
1.7
SW
8
1.1
SW
8
1.1
SW
8
0.7
SW
7
1.1
SW
8
0.7
SW
7
0.6
SW
7
0.6
E
6
0.5
E
7
0.4
ENE
7
Energy kJ
51
1736
1684
527
241
118
103
88
81
62
67
381
157
142
51
129
54
44
28
22
18
Swell 2
Height (m)
Direction
Period (s)
0.3
E
8
2.2
SW
12
0.3
E
9
1.2
SSE
8
1
SSE
8
0.6
SSE
7
0.7
SW
8
0.6
SW
8
0.6
SW
7
0.7
SE
9
0.3
ESE
13
0.6
SE
9
0.8
SSE
6
0.7
ESE
9
0.6
ESE
9
0.6
ESE
8
0.5
E
5
0.4
ESE
9
0.6
SW
7
0.5
SW
7
0.4
SW
7
Energy kJ
13
1313
14
207
117
41
64
48
44
81
35
67
38
70
49
48
12
26
32
23
17
Swell 3
Height (m)
Direction
Period (s)
0.1
NE
9
0.2
ESE
16
0.2
ESE
16
0.3
ESE
15
0.3
ESE
15
0.5
SE
9
0.3
ENE
4
0.3
ESE
14
0.3
ESE
14
0.3
ESE
14
0.1
NE
10
0.3
ESE
13
0.6
ESE
9
0.6
SSE
6
0.3
SSE
6
0.2
ESE
12
0.4
ESE
9
0.3
SSE
6
0.3
SSE
6
0.3
ESE
9
0.2
ESE
12
Energy kJ
3
25
25
44
42
40
4
41
36
36
4
35
54
29
6
15
25
6
6
16
14
Wind waves
Height (m)
Direction
Period (s)
3.5
SSW
8
0.7
ESE
4
0.2
ENE
4
1.8
SW
7
1.3
WSW
8
0.3
NE
2
0.8
ENE
4
0.5
ENE
5
0.5
E
5
0.2
S
6
0.3
SSW
3
Energy kJ
1611
13
1
295
208
1
21
14
14
2
2
Nearest Offshore or Glassy
Rating
(10 max)
4
3
2
2
3
1
1
1
1
1
1
2
1
2
1
1
1
1
1
1
1
Distance (km)
52
43
39
43
12
0
36
0
0
64
60
36
33
12
0
0
0
0
563
40
811
Best forecast wave conditions in Chiba
Rating
(10 max)
4
3
3
1
1
1
1
2
1
1
2
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
4
4
4
3
3
1
1
2
2
2
2
2
2
2
2
1
1
1
1
1
1
Header Global
Rating
(10 max)
6
6
8
5
5
6
5
6
5
5
5
5
5
5
5
5
6
6
5
8
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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