Mera Surf Break

Mera 48 hour detailed Surf Forecast

Lat Long: 34.90° N 139.84° E

Issued: 2 pm 21 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
23.5° 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):

  • Afternoon surf: Afternoon surf (21 Jun, local time) - 8ft (2.5m), 8s period with SW swell.
  • Evening surf: Evening surf (21 Jun, local time) - 8ft (2.5m), 8s period with SW swell.

The current surf forecast for Mera at 9PM is: 2.5m 8s primary swell from a Southwest direction and 0.4m 9s secondary swell from a Southeast direction (forecast issued at 02:00pm June 21). An open ocean swell of 0.5m 10s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (JST) & DateWave HeightWave Period
Morning (21 Jun)--
Afternoon (21 Jun)8ft (2.5m)8s
Evening (21 Jun)8ft (2.5m)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 Mon night. Warm (max 25°C on Sun afternoon, min 19°C on Mon night). Winds decreasing (strong winds from the SW on Sun afternoon, calm by Mon morning).

Sun
21
Monday
22
Tuesday
23
Wed
24
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
12 AM
3 AM
6 AM
9 AM
Rating
(10 max)
0
0
0
3
3
1
1
2
1
1
1
1
1
1
1
1
0
0
0
0
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
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
SW
7
2.5
SW
8
3
SW
8
2.5
SW
8
2.5
WSW
8
1.7
SW
8
1.6
SW
8
1.3
SW
8
1.1
SW
8
1.1
SW
7
0.8
SW
7
0.8
SW
7
0.8
SW
7
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.4
SE
11
0.5
SE
11
0.5
SE
10
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
Wave Graph
Metric surfscale
Energy kJ
539
864
1006
813
1008
389
319
203
145
121
65
75
59
56
59
60
60
43
56
53
56
55
56
55
Wind (km/h)
45
SW
45
SW
35
WSW
15
NNW
25
N
20
N
15
NNE
10
NNE
5
N
10
E
15
ENE
15
NE
15
NNE
20
NNE
20
NE
20
NNE
15
NNE
10
ENE
10
E
10
ENE
10
NE
15
NE
20
NE
15
NE
Wind State
on
on
on
cross-off
cross-off
cross-off
cross-off
off
glassy
cross-off
off
off
off
off
off
off
off
cross-off
cross-off
cross-off
off
off
off
off
High Tide
9:50PM1.27m
9:42AM1.08m
10:23PM1.27m
11:30AM1.02m
10:59PM1.28m
Low Tide
3:02PM0.41m
4:00AM0.71m
3:46PM0.59m
5:17AM0.61m
4:35PM0.76m
6:29AM0.50m
part cloud
clear
part cloud
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:26
4:26
4:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:57
6:57
6:57
 mm
1
2
1
4
Temp °C
24
25
24
23
22
21
21
21
22
22
21
20
20
19
19
20
21
22
21
21
20
20
20
21
Feels °C
21
21
22
25
21
20
20
21
24
23
21
20
20
18
17
19
20
23
21
22
20
20
19
21
Swell 1
Height (m)
Direction
Period (s)
0.7
ENE
10
0.5
ENE
9
0.5
ENE
10
0.5
ENE
10
2.1
SW
8
1.7
SW
8
1.6
SW
8
1.3
SW
8
1.1
SW
8
1.1
SW
7
1
ENE
10
0.9
ENE
10
1.1
ENE
10
1
ENE
10
1.1
ENE
10
1.4
ENE
10
1.4
ENE
10
1.4
ENE
10
1.4
ENE
10
1.4
ENE
10
1.3
ENE
10
1.2
ENE
10
1.2
ENE
10
1.1
ENE
9
Energy kJ
83
50
51
54
582
389
319
203
145
121
183
148
205
179
240
378
373
373
356
348
335
282
271
225
Swell 2
Height (m)
Direction
Period (s)
0.4
SE
9
0.4
SE
9
0.5
SE
9
0.4
SE
9
0.5
ENE
10
0.6
ENE
10
0.5
ENE
9
0.8
ENE
10
0.9
ENE
10
0.9
ENE
10
0.8
SW
7
0.8
SW
7
0.8
SW
7
0.6
SW
7
0.6
SW
7
0.6
SW
6
0.4
SW
6
0.4
SE
11
0.5
SE
11
0.5
SE
10
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
Energy kJ
29
21
41
31
52
71
44
133
160
154
65
75
59
38
37
26
14
43
56
53
56
55
56
55
Swell 3
Height (m)
Direction
Period (s)
0.3
SE
11
0.3
SE
11
0.3
ENE
12
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
0.4
SE
10
0.5
SE
10
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.4
SW
6
0.4
SW
6
0.3
SW
6
0.3
SW
6
0.3
SW
6
0.3
SW
6
0.2
SSW
13
Energy kJ
19
19
28
15
35
35
35
35
35
35
35
35
50
56
59
60
60
13
12
5
5
5
5
17
Wind waves
Height (m)
Direction
Period (s)
2.3
SW
7
2.5
SW
8
3
SW
8
2.5
SW
8
2.5
WSW
8
0.5
E
3
0.5
ENE
4
0.6
NE
3
0.8
NE
4
1.1
NE
5
0.3
NNW
4
0.4
NE
3
Energy kJ
539
864
1006
813
1008
5
7
6
17
51
2
2
Nearest Offshore or Glassy
Rating
(10 max)
2
2
3
3
2
3
2
2
1
1
1
1
1
1
1
1
3
1
1
1
2
2
2
1
Distance (km)
36
43
36
0
40
12
12
0
0
0
0
0
0
0
0
0
40
47
47
47
40
40
40
36
Best forecast wave conditions in Chiba
Rating
(10 max)
2
3
2
3
2
3
2
2
2
1
1
2
2
1
4
1
3
3
3
2
2
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
3
3
3
3
2
3
2
2
3
1
2
2
2
2
4
3
3
1
3
3
3
2
2
3
Header Global
Rating
(10 max)
9
9
8
8
7
7
7
6
6
5
7
6
5
5
5
5
5
6
5
5
5
5
6
8
  • 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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