Mera Surf Break

Mera 48 hour detailed Surf Forecast

Lat Long: 34.90° N 139.84° E

Issued: 2 am 21 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.


How big are the waves at Mera today (21 Jun):

  • Morning surf: Morning surf (21 Jun, local time) - 6ft (1.9m), 6s period with SW swell.
  • Afternoon surf: Afternoon surf (21 Jun, local time) - 8ft (2.5m), 8s period with SW swell.
  • Evening surf: Evening surf (21 Jun, local time) - 10ft (3.0m), 8s period with WSW swell.

The current surf forecast for Mera at 6AM is: 1.5m 5s primary swell from a South direction and 0.4m 9s secondary swell from a Southeast direction (forecast issued at 02:00am June 21). An open ocean swell of 0.8m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (21 Jun)6ft (1.9m)6s
Afternoon (21 Jun)8ft (2.5m)8s
Evening (21 Jun)10ft (3.0m)8s

Table - waves today at Mera. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 8mm), mostly falling on Sun morning. Warm (max 26°C on Sun afternoon, min 19°C on Mon night). Winds decreasing (near gales from the SW on Sun afternoon, calm by Mon morning).

Sunday
21
Monday
22
Tuesday
23
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
0
0
0
0
0
0
0
2
4
2
2
2
2
1
0
1
1
1
1
1
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SE
5
1.5
SSE
5
1.5
S
5
1.9
SW
6
2.4
SW
7
2.5
SW
8
3
SW
8
3
WSW
8
3
WSW
8
1.7
SW
8
1.6
SW
8
1.3
SW
8
1.2
SW
8
1.1
SW
8
1.1
SW
8
0.9
SW
8
0.9
SW
7
0.4
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
Wave Graph
Metric surfscale
Energy kJ
68
108
120
260
540
799
1207
1162
1165
392
349
233
177
131
131
94
77
40
60
60
60
59
58
56
Wind (km/h)
35
SSE
35
S
40
SSW
45
SW
50
SW
50
SW
40
WSW
20
NW
15
NNW
15
N
15
NNE
10
NNE
0
S
15
ESE
20
ENE
20
ENE
15
NNE
15
NNE
15
NE
15
NE
10
NE
10
E
15
ENE
15
ENE
Wind State
cross
cross-on
cross-on
on
on
on
on
cross
cross-off
cross-off
off
off
glassy
cross-off
cross-off
off
off
off
off
off
off
cross-off
cross-off
cross-off
High Tide
9:17PM1.29m
8:19AM1.19m
9:50PM1.27m
9:42AM1.08m
10:23PM1.27m
11:30AM1.02m
Low Tide
2:52AM0.79m
3:02PM0.41m
4:00AM0.71m
3:46PM0.59m
5:17AM0.61m
4:35PM0.76m
mod rain
light rain
thunderstorm
thunderstorm
part cloud
clear
part cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:26
4:26
4:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:57
6:57
 mm
6
4
2
3
1
2
2
Temp °C
22
23
23
23
24
26
25
24
22
21
21
21
22
22
21
20
20
19
20
21
21
21
21
21
Feels °C
19
20
20
19
20
20
20
24
23
21
21
21
24
22
19
18
20
19
20
20
21
21
21
21
Swell 1
Height (m)
Direction
Period (s)
0.7
ENE
9
0.8
ENE
10
0.8
ENE
10
0.7
ENE
10
0.7
ENE
10
0.5
ENE
9
0.5
ENE
10
0.5
ENE
10
2.2
SW
8
1.7
SW
8
1.6
SW
8
1.3
SW
8
1.2
SW
8
1.1
SW
8
1.1
SW
8
0.9
SW
8
0.9
SW
7
0.6
SW
7
0.5
SW
7
0.5
SE
11
0.5
SE
11
0.5
SE
11
1.4
ENE
10
1.4
ENE
10
Energy kJ
76
105
107
83
83
50
51
56
682
392
349
233
177
131
131
94
77
38
22
60
60
59
356
394
Swell 2
Height (m)
Direction
Period (s)
0.6
SW
7
0.4
SE
9
0.4
SE
9
0.4
ESE
6
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.5
ENE
10
0.5
ENE
10
0.5
ENE
9
0.7
ENE
10
0.8
ENE
10
0.8
ENE
10
0.9
ENE
10
0.4
SE
10
0.4
SE
10
0.4
SE
11
0.5
SE
11
0.4
SW
7
0.3
SW
7
0.3
SW
6
0.5
SE
11
0.5
SE
11
Energy kJ
27
30
29
13
29
30
29
31
56
52
47
95
116
127
154
35
36
40
60
16
7
7
58
56
Swell 3
Height (m)
Direction
Period (s)
0.1
E
18
0.3
SE
12
0.3
SE
11
0.4
SE
9
0.3
SE
11
0.3
SE
11
0.3
SE
11
0.2
ENE
12
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.1
S
11
0.1
S
11
0.1
S
10
0.1
S
10
0.1
E
15
0.1
S
10
0.1
S
10
0.2
SSW
6
0.2
SSW
6
Energy kJ
6
21
20
29
19
19
19
15
35
35
35
35
35
35
35
2
2
2
2
4
2
2
4
3
Wind waves
Height (m)
Direction
Period (s)
1.3
SE
5
1.5
SSE
5
1.5
S
5
1.9
SW
6
2.4
SW
7
2.5
SW
8
3
SW
8
3
WSW
8
3
WSW
8
1.2
ENE
10
1.4
ENE
10
1.4
NE
9
1.5
ENE
10
1.5
ENE
10
1.4
ENE
10
1.4
ENE
10
Energy kJ
68
108
120
260
540
799
1207
1162
1165
253
342
360
421
439
394
373
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
3
1
1
3
1
4
2
2
2
2
1
1
1
1
1
1
1
1
3
1
1
Distance (km)
504
504
148
244
69
483
36
73
0
0
0
0
0
0
47
0
0
0
0
0
153
56
47
47
Best forecast wave conditions in Chiba
Rating
(10 max)
3
4
3
2
2
2
1
1
3
3
4
1
3
3
3
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
3
3
2
2
3
1
4
3
3
2
2
1
2
2
3
3
4
1
1
3
1
2
Header Global
Rating
(10 max)
5
5
5
9
9
9
8
8
7
7
7
6
6
6
7
7
5
5
5
5
5
6
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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