Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 2 am 14 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
23.0° 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 13 Jun 2026:

  • Best quality surf: Saturday 20 Jun, 12AM (local time) - 6ft (1.9m), 8s period, E swell with cross-offshore winds.
  • Most powerful swell: Monday 15 Jun, 6PM (local time) - 8ft (2.5m), 9s period, E swell with 1,064 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 16 Jun, 9AM (local time) - 5ft (1.5m), 8s period with E 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 Tuesday (Jun 16) at 9AM. The primary swell is predicted to be 1.5m and 8s period with a secondary swell of 0.2m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 2.5m 9s and forecast to arrive on Monday (Jun 15) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 7s period and expected on Monday (Jun 15) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Tue 16th Jun)5ft (1.5m) 8s
Best Surf12AM (Sat 20th Jun)6ft (1.9m) 8s
Most Powerful 6PM (Mon 15th Jun)8ft (2.5m) 9s

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 23mm), heaviest during Mon morning. Warm (max 22°C on Sun morning, min 17°C on Sun night). Winds decreasing (strong winds from the ENE on Mon morning, calm by Tue morning).

Days 4-6 Weather Summary

Heavy rain (total 72mm), heaviest during Thu night. Warm (max 25°C on Fri afternoon, min 21°C on Wed morning). Winds decreasing (strong winds from the S on Thu night, light winds from the WNW by Fri afternoon).

Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
1
1
2
0
0
0
0
0
0
0
0
0
1
3
0
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
E
8
0.7
E
8
0.7
E
8
2
E
6
2.1
ESE
8
2.1
ESE
9
1.5
E
8
1.3
E
8
1.1
E
8
0.4
SW
7
0.3
SW
7
0.4
SW
9
0.9
E
9
0.6
SW
8
0.6
SW
8
2
ESE
7
1.7
ESE
7
1.9
E
8
1.5
E
8
1.4
E
8
1.4
E
8
Wave Graph
Metric surfscale
Energy kJ
64
69
68
293
587
631
291
213
161
12
8
29
127
55
53
394
327
476
291
260
257
Wind (km/h)
15
SSW
20
S
20
SSE
40
ENE
35
NNE
30
NNE
10
N
15
S
5
SSW
10
SE
20
SSE
15
S
20
SSE
25
SE
45
S
30
N
10
WNW
15
ESE
25
ENE
20
ENE
25
ENE
Wind State
cross-on
cross-on
cross-on
off
off
cross-off
cross-off
cross-on
on
cross
cross-on
cross-on
cross
cross
cross-on
cross-off
cross
cross-off
cross-off
off
off
High Tide
5:06PM1.42m
3:10AM1.50m
5:55PM1.45m
3:57AM1.53m
6:41PM1.44m
4:43AM1.53m
7:24PM1.41m
5:31AM1.49m
8:05PM1.36m
6:21AM1.42m
8:42PM1.32m
7:16AM1.31m
9:17PM1.29m
Low Tide
9:46AM-0.10m
10:01PM0.98m
10:33AM-0.18m
10:48PM0.99m
11:20AM-0.20m
11:33PM0.97m
12:07PM-0.17m
00:17AM0.94m
12:52PM-0.08m
1:03AM0.90m
1:36PM0.06m
1:54AM0.85m
2:20PM0.22m
2:52AM0.79m
cloud
cloud
heavy rain
mod rain
light rain
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
light rain
heavy rain
rain showers
part cloud
cloud
cloud
cloud
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:26
4:26
4:26
4:26
4:26
4:26
4:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:54
6:54
6:54
6:55
6:55
6:55
6:57
 mm
11
10
2
5
60
7
22
Temp °C
22
22
21
18
19
18
20
20
20
22
22
21
22
22
23
23
25
23
20
21
20
Feels °C
22
21
19
12
14
13
21
19
21
21
21
20
21
21
19
22
26
25
18
20
18
Swell 1
Height (m)
Direction
Period (s)
0.7
E
8
0.7
E
8
0.7
E
8
0.2
SSW
6
2.1
ESE
8
2.1
ESE
9
1.5
E
8
1.3
E
8
1.1
E
8
0.9
ENE
8
1
E
10
0.9
ENE
9
0.9
E
9
0.8
ENE
9
0.6
ENE
9
0.6
SW
8
0.6
SW
8
1.8
E
8
1.5
E
8
0.4
SW
7
0.4
SE
9
Energy kJ
64
69
68
4
587
631
291
213
161
112
196
141
127
101
61
40
46
418
291
17
31
Swell 2
Height (m)
Direction
Period (s)
0.6
S
6
0.4
SW
7
0.3
SW
7
0.1
SE
14
0.1
S
24
0.1
E
13
0.2
SSW
7
0.3
S
6
0.4
SW
7
0.4
SW
7
0.3
SW
7
0.4
SW
9
0.6
SW
8
0.6
SW
8
0.6
SW
8
0.1
SE
14
0.2
SSE
10
0.5
SW
7
0.4
SW
7
0.4
SE
10
0.4
SW
7
Energy kJ
25
14
7
8
11
3
5
7
12
12
8
29
43
55
53
8
10
25
19
24
16
Swell 3
Height (m)
Direction
Period (s)
0.4
SW
8
0.2
ESE
15
0.2
ESE
15
0.1
S
22
0.2
ESE
13
0.3
SW
7
0.1
SE
20
0.3
SE
7
0.1
SE
12
0.2
SSE
10
0.2
SSE
10
0.4
SE
10
0.3
SE
11
0.2
SSE
10
0.1
SE
14
0.3
SE
10
0.4
SE
10
0.2
SSE
12
0.2
SSE
12
Energy kJ
15
21
21
9
17
7
15
7
6
10
10
24
18
10
7
16
25
15
14
Wind waves
Height (m)
Direction
Period (s)
0.5
S
6
0.6
SSE
4
2
E
6
1.6
ENE
8
1
N
5
0.3
NNW
4
0.3
SE
6
0.3
SE
3
0.4
SE
3
0.9
SE
5
1.5
SE
6
2
ESE
7
1.7
ESE
7
1.9
E
8
1.8
ENE
8
1.4
E
8
1.4
E
8
Energy kJ
18
12
293
343
41
2
5
1
4
31
141
394
327
476
414
260
257
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
3
1
2
2
2
2
2
2
1
1
1
2
2
3
2
2
1
Distance (km)
153
64
64
483
244
43
0
64
35
64
64
64
47
64
244
40
12
0
204
0
14
Best forecast wave conditions in Chiba
Rating
(10 max)
1
1
3
3
2
2
2
2
2
1
1
2
2
3
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
3
3
3
3
3
2
2
4
2
2
2
1
2
2
3
2
2
3
Header Global
Rating
(10 max)
5
5
5
9
5
5
5
5
5
4
4
5
7
9
8
8
9
5
5
5
4
  • 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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