Mera Surf Break

Lat Long: 34.90° N 139.84° E

Mera 48 hour detailed Surf Forecast

Issued: 8 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
26.1°C
0.4° 

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 (20 Sep):

  • Morning surf: Morning surf (20 Sep, local time) - 11ft (3.5m), 12s period with SE swell.
  • Afternoon surf: Afternoon surf (20 Sep, local time) - 11ft (3.5m), 11s period with SE swell.
  • Evening surf: Evening surf (20 Sep, local time) - 11ft (3.5m), 12s period with SSE swell.

The current surf forecast for Mera at 4PM is: 3.5m 11s primary swell from a Southeast direction and 0.3m 13s secondary swell from a East direction (forecast issued at 08:00am September 20). An open ocean swell of 1.0m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (20 Sep)11ft (3.5m)12s
Afternoon (20 Sep)11ft (3.5m)11s
Evening (20 Sep)11ft (3.5m)12s

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


Short Range Forecast

Heavy rain (total 126mm), heaviest during Mon night. Warm (max 27°C on Mon morning, min 22°C on Sun morning). Mainly stormy winds.

Sunday
20
Monday
21
Tuesday
22
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)
4
3
3
3
3
4
4
5
8
4
5
6
0
!
!
0
0
0
0
2
2
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
SE
12
3.5
SE
12
3.5
SE
11
3.5
SE
11
3.5
SE
11
3.5
SSE
12
3.5
SSE
12
4
SSE
12
4.5
SSE
12
4.5
SSE
12
4.5
SSE
12
5
SSE
12
6.5
SSE
13
8.5
SSE
14
8.5
SSE
14
3
SE
10
2.5
SSE
10
2
SSE
10
1.9
SSE
9
1.8
S
9
1.6
S
8
1.4
S
8
Wave Graph
Metric surfscale
Energy kJ
3253
2845
2767
2788
2918
2981
3609
3921
5895
5417
6600
8165
14149
30758
28742
1836
1220
748
612
509
356
253
Wind (km/h)
30
NE
35
NNE
35
NE
30
NNE
30
NNE
30
NNE
30
NE
20
ENE
20
E
25
ESE
30
ESE
35
ESE
50
ESE
65
ESE
80
E
90
NW
25
W
25
SW
15
S
10
SE
20
NE
35
ENE
Wind State
off
off
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-on
on
cross-on
cross
off
cross-off
High Tide
8:22PM1.20m
3:07PM1.24m
00:00AM1.16m
3:20PM1.31m
Low Tide
4:59AM0.57m
6:48AM0.53m
8:05PM1.09m
7:52AM0.45m
8:35PM0.97m
heavy rain
heavy rain
heavy rain
mod rain
light rain
light rain
light rain
mod rain
mod rain
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
heavy rain
heavy rain
light rain
part cloud
part cloud
clear
clear
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
5:26
5:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:40
5:39
5:37
 mm
18
11
15
8
3
2
4
6
8
5
4
5
10
13
19
11
1
1
Temp °C
23
22
23
23
23
24
24
25
26
27
27
27
27
27
26
25
26
26
26
27
26
25
Feels °C
22
20
21
22
22
23
24
27
28
28
28
26
24
21
17
13
27
26
28
30
27
23
  • 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
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mera surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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