Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 8 pm 28 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
23.7° 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 28 Jun 2026:

  • Best quality surf: Monday 29 Jun, 6AM (local time) - 3.5ft (1.1m), 9s period, SW swell with cross-offshore winds.
  • Most powerful swell: Friday 3 Jul, 3AM (local time) - 7.5ft (2.3m), 8s period, SW swell with 605 kJ wave energy.
  • Next surfable swell (1★+): Monday 29 Jun, 6AM (local time) - 3.5ft (1.1m), 9s period with SW 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 Monday (Jun 29) at 6AM. The primary swell is predicted to be 1.1m and 9s period with a secondary swell of 0.7m 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 2.3m 8s and forecast to arrive on Friday (Jul 03) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 9s period and expected on Saturday (Jul 04) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 29th Jun)3.5ft (1.1m) 9s
Best Surf 6AM (Mon 29th Jun)3.5ft (1.1m) 9s
Most Powerful 3AM (Fri 3rd Jul)7.5ft (2.3m) 8s

Table - best surf conditions forecast for Mera over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 12mm), heaviest on Tue night. Warm (max 24°C on Mon afternoon, min 21°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 32mm), heaviest during Thu morning. Warm (max 24°C on Thu afternoon, min 20°C on Thu morning). Mainly fresh winds.

Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sun
5
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
2
1
0
1
0
0
1
1
0
0
0
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
Wave
Height (m)
Direction
Period (s)
1.7
SSW
9
0.9
SW
8
0.8
SSE
9
1
SW
7
0.7
SW
8
0.7
SE
9
0.6
SE
9
1.2
SW
8
0.8
SW
8
0.6
ESE
9
0.6
ESE
9
1.1
S
4
2.3
SW
7
1.4
SW
8
1.1
SW
8
0.6
SW
7
0.3
SE
12
0.4
SW
7
0.3
SE
9
0.9
E
8
0.8
E
8
Wave Graph
Metric surfscale
Energy kJ
433
118
103
99
68
81
67
196
93
53
49
44
552
248
128
42
21
11
14
113
88
Wind (km/h)
20
W
5
N
10
SSW
15
WSW
10
NE
10
SSE
10
SW
20
ENE
25
NE
10
NW
10
SSE
25
SSW
30
N
25
N
20
N
20
NNE
20
NNE
15
E
10
E
20
SE
30
SSE
Wind State
cross-on
cross-off
cross-on
on
off
cross-on
on
cross-off
off
cross
cross
on
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
cross
cross
High Tide
2:53AM1.39m
5:36PM1.35m
3:34AM1.41m
6:07PM1.37m
4:12AM1.43m
6:38PM1.37m
4:49AM1.43m
7:09PM1.37m
5:26AM1.42m
7:37PM1.36m
6:04AM1.39m
8:04PM1.35m
6:47AM1.34m
Low Tide
9:46PM0.98m
10:17AM0.09m
10:26PM0.95m
10:52AM0.05m
11:03PM0.92m
11:27AM0.04m
11:39PM0.90m
12:00PM0.05m
00:14AM0.87m
12:34PM0.08m
00:49AM0.84m
1:06PM0.15m
1:27AM0.80m
1:40PM0.25m
rain showers
rain showers
clear
clear
part cloud
cloud
mod rain
rain showers
part cloud
cloud
heavy rain
heavy rain
light rain
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:28
4:28
4:30
4:30
4:31
4:31
4:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:58
6:58
6:58
6:58
6:58
6:58
6:58
 mm
2
1
8
1
17
13
2
1
2
3
Temp °C
22
23
24
23
23
24
23
22
24
23
20
24
22
22
24
22
22
22
22
22
23
Feels °C
23
27
27
24
26
27
26
21
23
24
22
23
23
21
24
21
22
23
23
21
22
Swell 1
Height (m)
Direction
Period (s)
1.7
SSW
9
0.9
SW
8
0.8
SW
8
0.6
SE
9
0.7
SW
8
0.7
SE
9
0.6
SE
9
1.2
SW
8
0.8
SW
8
0.6
ESE
9
0.6
ESE
9
0.4
ESE
8
0.4
ESE
9
1.4
SW
8
1.1
SW
8
0.6
SW
7
0.4
SW
7
1
ENE
9
1
E
9
0.9
E
8
0.8
E
8
Energy kJ
433
118
78
71
57
81
67
196
93
53
49
28
26
248
128
42
16
147
162
113
88
Swell 2
Height (m)
Direction
Period (s)
0.3
ESE
15
0.6
SSE
7
0.8
SSE
9
0.3
ESE
14
0.6
SE
9
0.6
SW
7
0.6
S
5
0.6
ESE
9
0.6
ESE
9
0.5
E
5
0.4
SW
7
0.4
E
5
0.2
ESE
12
0.3
ESE
9
0.4
SSE
6
0.3
SSE
6
0.3
SE
12
0.4
SW
7
0.3
SW
6
0.2
SSW
5
0.1
SE
10
Energy kJ
42
41
103
41
68
33
15
55
54
13
12
9
14
16
13
6
21
11
6
3
4
Swell 3
Height (m)
Direction
Period (s)
0.2
E
8
0.5
SE
9
0.3
ESE
15
0.2
E
8
0.3
ESE
14
0.3
ESE
14
0.5
SW
7
0.3
ESE
13
0.6
S
6
0.5
SW
7
0.3
E
5
0.2
ESE
12
0.1
NE
10
0.2
ESE
12
0.3
ESE
9
0.3
ESE
9
0.2
ESE
9
0.3
SE
8
0.3
SE
9
0.1
SE
10
0.1
SW
6
Energy kJ
5
41
42
5
36
36
23
35
30
27
4
15
4
14
16
16
7
11
14
4
1
Wind waves
Height (m)
Direction
Period (s)
1
SW
7
0.9
S
5
0.9
E
4
0.8
E
4
0.4
ENE
5
1.1
S
4
2.3
SW
7
0.6
ENE
4
0.9
ENE
7
0.9
ENE
9
0.5
S
3
Energy kJ
99
37
26
25
8
44
552
13
88
132
5
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
2
1
1
1
1
1
1
1
1
2
2
2
2
1
1
2
1
1
Distance (km)
33
0
36
12
0
36
33
14
0
12
33
153
33
40
12
56
850
1419
56
70
501
Best forecast wave conditions in Chiba
Rating
(10 max)
2
2
1
2
1
1
1
1
1
1
1
2
2
2
2
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
2
2
2
1
2
1
1
1
3
2
2
2
2
1
1
2
1
1
Header Global
Rating
(10 max)
5
9
7
5
5
5
5
5
5
5
4
8
5
5
4
7
4
4
5
9
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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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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