Mera Surf Break

Mera 48 hour detailed Surf Forecast

Lat Long: 34.90° N 139.84° E

Issued: 2 am 18 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
22.0° C

1.0°C colder than average for this time of year

Mera surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

How big are the waves at Mera today (18 Jun):

  • Morning surf: Morning surf (18 Jun, local time) - 4.5ft (1.4m), 8s period with SW swell.
  • Afternoon surf: Afternoon surf (18 Jun, local time) - 4ft (1.2m), 7s period with SSE swell.
  • Evening surf: Evening surf (18 Jun, local time) - 4ft (1.2m), 9s period with SW swell.

The current surf forecast for Mera at 6AM is: 2.2m 7s primary swell from a South-southwest direction and 0.3m 8s secondary swell from a Southeast direction (forecast issued at 02:00am June 18). An open ocean swell of 0.6m 9s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (18 Jun)4.5ft (1.4m)8s
Afternoon (18 Jun)4ft (1.2m)7s
Evening (18 Jun)4ft (1.2m)9s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast

Heavy rain (total 47mm), heaviest during Thu morning. Warm (max 23°C on Thu afternoon, min 20°C on Sat afternoon). Winds decreasing (fresh winds from the N on Thu morning, light winds from the WNW by Thu night).

Thursday
18
Friday
19
Saturday
20
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
1
2
0
0
1
0
0
0
1
1
0
0
0
0
0
0
1
1
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
Wave
Height (m)
Direction
Period (s)
1
SSE
5
1.2
SW
8
2.2
SSW
7
1.4
SW
8
1.6
S
7
1.2
SSE
7
0.9
SSW
8
1.2
SW
9
1.3
SW
9
1.2
SW
8
1
SW
8
0.8
SW
8
0.8
SW
8
0.8
SW
8
0.8
SW
8
0.8
SW
8
0.8
SW
8
0.7
SW
8
0.6
SW
8
0.6
SW
7
0.6
SW
7
0.5
SW
7
0.5
SW
7
1.6
SE
6
Wave Graph
Metric surfscale
Energy kJ
46
160
432
223
250
136
93
241
275
201
129
93
77
95
95
93
77
63
46
44
33
23
22
154
Wind (km/h)
15
SE
5
SW
10
ENE
35
N
35
N
20
N
20
WSW
25
SW
15
SW
5
WNW
15
ENE
20
ENE
15
E
20
E
20
E
20
E
20
ENE
20
ENE
20
ENE
20
E
20
ESE
20
ESE
25
ESE
25
SE
Wind State
cross
on
cross-off
cross-off
cross-off
cross-off
on
on
on
cross-on
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
5:31AM1.49m
8:05PM1.36m
6:21AM1.42m
8:42PM1.32m
7:16AM1.31m
Low Tide
00:17AM0.94m
12:52PM-0.08m
1:03AM0.90m
1:36PM0.06m
1:54AM0.85m
2:20PM0.22m
heavy rain
heavy rain
heavy rain
heavy rain
rain showers
clear
clear
clear
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
mod rain
mod rain
<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>
—
—
—
—
—
—
6:55
—
—
—
—
—
—
—
6:55
—
—
—
—
—
—
—
6:57
—
 mm
25
16
25
17
1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1
6
8
Temp °C
21
21
21
21
21
23
23
22
22
22
21
22
23
23
22
22
21
21
21
21
22
21
20
21
Feels °C
22
24
24
18
17
22
23
21
23
25
22
22
24
23
22
22
21
20
20
20
21
20
19
20
Swell 1
Height (m)
Direction
Period (s)
0.7
ENE
10
0.9
SSE
6
0.6
ENE
9
1.4
SW
8
1.6
S
7
1.2
SSE
7
1
SSE
7
1.2
SW
9
0.9
SE
7
0.8
SSE
6
1
SW
8
0.8
SW
8
0.8
SW
8
0.8
SW
8
0.8
SW
8
0.8
SW
8
0.8
SW
8
0.7
SW
8
0.6
SW
8
0.6
SW
7
0.6
ENE
9
0.6
ENE
9
0.7
ENE
10
0.7
ENE
10
Energy kJ
94
53
69
223
250
136
93
241
75
54
129
93
77
95
95
93
77
63
46
44
58
58
81
88
Swell 2
Height (m)
Direction
Period (s)
0.6
SW
8
0.6
ENE
9
0.3
SE
8
1.4
SSE
7
0.8
SW
8
0.6
SSW
7
0.9
SSW
8
0.9
SSE
7
0.4
ENE
9
0.4
ENE
9
0.8
SSE
6
0.7
SSE
6
0.4
SE
10
0.4
SSE
6
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
ENE
9
0.4
SE
10
0.6
ENE
9
0.6
SW
7
0.5
SW
7
0.5
SW
7
0.5
SW
7
Energy kJ
43
69
10
176
67
40
81
81
33
32
45
33
35
12
35
35
35
31
34
55
33
23
22
21
Swell 3
Height (m)
Direction
Period (s)
0.2
SSE
10
0.2
SSE
10
0.3
SE
10
0.6
ENE
9
0.5
ENE
9
0.7
SW
7
0.6
SE
9
0.6
SSE
9
0.4
SE
9
0.2
SSE
9
0.4
ENE
9
0.4
ENE
9
0.4
NE
9
0.4
SE
10
0.3
ENE
9
0.3
ENE
9
0.4
NE
9
0.4
SE
10
0.1
SE
13
0.2
SSE
13
0.2
SSE
12
0.2
SSE
12
0.2
SSE
12
0.4
SE
10
Energy kJ
10
10
16
69
50
54
61
53
20
8
32
27
20
35
16
16
20
34
7
16
15
15
15
23
Wind waves
Height (m)
Direction
Period (s)
1
SSE
5
1.2
SW
8
2.2
SSW
7
0.4
NNW
4
0.9
N
4
0.8
N
4
0.8
W
8
0.9
SW
8
1.3
SW
9
1.2
SW
8
—
—
0.6
SE
6
0.6
E
4
0.7
ESE
4
0.7
ESE
4
0.7
ESE
4
0.6
E
4
1
E
4
1.1
ESE
4
1.2
ESE
5
1.3
ESE
5
1.5
SE
5
1.6
SE
6
Energy kJ
46
160
432
7
28
24
76
94
275
201
—
—
28
9
16
16
16
10
33
50
59
83
124
154
Nearest Offshore or Glassy
Nunoshima
Shikoku
Uchiboso
Chiba
Mera
Chiba
Kamogawa
Chiba
Shimoda Yamatoken (Tatado Hama)
Shizuoka
Amatu
Chiba
Chikura
Chiba
Kamogawa
Chiba
Chikura
Chiba
Chikura
Chiba
Mera
Chiba
Uchiboso
Chiba
Uchiboso
Chiba
Keta Reef Oshima
Izu Islands
Keta Reef Oshima
Izu Islands
Keta Reef Oshima
Izu Islands
Kaiser's (Hachijojima Island)
Izu Islands
Mera
Chiba
Mera
Chiba
Ikumi Beach
Shikoku
Gyongpo Beach
South Korea
Gyongpo Beach
South Korea
Aoshima Harbour
Kyu Shu
Omaezaki
Shizuoka
Rating
(10 max)
1
1
2
3
1
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
Distance (km)
500
14
0
33
87
40
12
33
12
12
0
14
14
47
47
47
204
0
0
533
1031
1031
850
153
Best forecast wave conditions in Chiba
Uchiboso
Mera
Big Ben
Kuminatu
Malibu
Tsurigasaki Surfing Beach (Tokyo 2020)
Tsurigasaki Surfing Beach (Tokyo 2020)
Kuminatu
Uchiboso
Uchiboso
Uchiboso
Mera
Mera
Rating
(10 max)
1
2
3
2
2
2
2
2
1
1
1
1
1
Best forecast wave conditions in Japan
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Big Ben
Chiba
Susuki
Shizuoka
Kuminatu
Chiba
Malibu
Chiba
Tsurigasaki Surfing Beach (Tokyo 2020)
Chiba
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Nunoshima
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Kaiser's (Hachijojima Island)
Izu Islands
Niyodo Rivermouth
Shikoku
Yasuda Rivermouth
Shikoku
Udo Shrine
Kyu Shu
Kaiser's (Hachijojima Island)
Izu Islands
Rating
(10 max)
1
2
2
3
1
2
2
2
2
2
2
1
1
1
1
1
1
1
1
1
2
2
Header Global
Ahijedero
Mexico
Otago Peninsula - Allans Beach
New Zealand
Dunedin - Cob Cottage
New Zealand
Cobblestones
Australia
Boneyards
South Africa
Papatowai
New Zealand
Papatowai
New Zealand
Papatowai
New Zealand
Otago Peninsula - Allans Beach
New Zealand
Dinner Plates
New Zealand
Dinner Plates
New Zealand
Tora Point
New Zealand
Trial Harbour
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Easter Reef
Australia
Hut Gulley
Australia
Amanzimtoti
South Africa
Left Point
Australia
Amanzimtoti
South Africa
Ahijedero
Mexico
Ahijedero
Mexico
Lebu
Chile
Rating
(10 max)
4
4
5
5
5
9
9
9
5
5
5
5
6
6
6
5
9
5
4
5
4
4
4
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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