Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 2 am 29 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, 9AM (local time) - 3ft (0.9m), 8s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 2 Jul, 9PM (local time) - 5.5ft (1.7m), 6s period, SSW swell with 215 kJ wave energy.
  • Next surfable swell (1★+): Monday 29 Jun, 9AM (local time) - 3ft (0.9m), 8s 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 9AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.6m 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 1.7m 6s and forecast to arrive on Thursday (Jul 02) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Jul 03) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Mon 29th Jun)3ft (0.9m) 8s
Best Surf 9AM (Mon 29th Jun)3ft (0.9m) 8s
Most Powerful 9PM (Thu 2nd Jul)5.5ft (1.7m) 6s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 24°C on Mon afternoon, min 22°C on Mon morning). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 31mm), heaviest during Thu afternoon. Warm (max 24°C on Fri afternoon, min 20°C on Thu morning). Winds decreasing (fresh winds from the N on Thu night, calm by Sat morning).

Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
1
1
0
1
2
1
0
0
0
0
0
1
1
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SW
8
0.8
SSE
9
1
SW
8
0.7
SE
9
0.7
SE
9
0.6
SE
9
1.1
SSW
8
0.8
SSW
7
0.6
ESE
9
0.5
ESE
9
1.2
S
5
1.3
SSE
6
1
SW
8
0.9
SW
8
0.7
SW
8
0.6
SW
7
0.4
SW
7
0.4
ESE
10
0.4
ESE
10
0.6
SW
7
0.5
ESE
11
Wave Graph
Metric surfscale
Energy kJ
118
103
110
86
81
67
149
62
53
42
63
134
120
93
55
33
16
38
40
42
65
Wind (km/h)
5
N
10
SSW
10
SW
10
E
10
SSE
5
NE
15
NNE
5
SE
20
SW
5
NNW
20
SSE
30
N
20
NNE
5
NE
10
NE
5
ENE
5
S
15
SSE
20
SSW
20
NNW
20
NNE
Wind State
cross-off
cross-on
on
cross-off
cross-on
glassy
cross-off
glassy
on
glassy
cross-on
cross-off
cross-off
glassy
off
off
cross-on
cross-on
cross-on
cross-off
cross-off
High Tide
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
8:30PM1.34m
Low Tide
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
2:11AM0.75m
part cloud
clear
clear
part cloud
cloud
part cloud
part cloud
cloud
cloud
heavy rain
rain showers
part cloud
part cloud
clear
part cloud
cloud
part cloud
part cloud
rain showers
part cloud
cloud
<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
 mm
13
18
2
Temp °C
23
24
23
23
23
23
24
24
23
20
22
21
23
24
22
22
22
23
25
22
21
Feels °C
27
26
25
26
25
25
25
27
25
22
23
19
23
26
24
25
23
23
26
22
20
Swell 1
Height (m)
Direction
Period (s)
0.9
SW
8
0.8
SW
8
0.8
SW
8
0.7
SE
9
0.7
SE
9
0.7
SW
7
1.1
SSW
8
0.8
SSW
7
0.6
ESE
9
0.5
ESE
9
0.4
ESE
8
1.3
SSE
6
1
SW
8
0.9
SW
8
0.7
SW
8
0.6
SW
7
0.4
ENE
7
0.4
ENE
7
0.4
ESE
10
0.6
SW
7
0.6
SW
7
Energy kJ
118
78
69
86
81
50
149
62
53
42
23
134
120
93
55
33
20
21
40
36
39
Swell 2
Height (m)
Direction
Period (s)
0.6
SSE
7
0.8
SSE
9
0.7
SE
9
0.6
SW
8
0.6
SW
7
0.6
SE
9
0.6
ESE
9
0.6
ESE
9
0.3
SSE
5
0.4
SW
6
0.3
ESE
12
1
SW
7
0.8
SSE
6
0.6
SE
6
0.6
SE
6
0.4
SE
6
0.4
SW
7
0.4
SW
6
0.4
SW
6
0.5
E
4
0.5
ESE
11
Energy kJ
41
103
90
48
34
67
55
54
6
10
30
89
46
30
23
13
16
13
8
7
65
Swell 3
Height (m)
Direction
Period (s)
0.5
SE
9
0.3
ESE
15
0.3
ESE
14
0.3
ESE
14
0.3
ESE
14
0.3
ESE
13
0.3
ESE
13
0.4
ESE
4
0.3
E
5
0.3
W
3
0.3
SE
9
0.4
ESE
9
0.4
ESE
9
0.4
SSW
6
0.4
ENE
7
0.4
ENE
7
0.4
SSE
5
0.4
ESE
10
0.1
SE
10
0.4
ESE
10
0.4
ENE
8
Energy kJ
41
42
41
36
36
35
35
5
4
2
12
26
26
12
21
21
11
38
4
42
27
Wind waves
Height (m)
Direction
Period (s)
1
SW
8
0.2
NNE
2
0.6
SW
6
1.2
S
5
0.4
NW
4
0.6
NNW
4
0.3
NNW
3
0.3
E
3
0.2
ESE
3
0.7
ENE
8
0.5
E
4
Energy kJ
110
1
25
63
4
11
2
1
1
60
7
Nearest Offshore or Glassy
Rating
(10 max)
2
1
2
1
1
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
Distance (km)
0
36
12
0
36
0
0
0
64
12
47
40
56
0
0
40
35
56
70
12
33
Best forecast wave conditions in Chiba
Rating
(10 max)
2
1
2
1
1
1
2
1
1
1
2
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
2
1
2
2
1
1
2
3
2
2
2
1
1
1
1
1
1
1
Header Global
Rating
(10 max)
9
7
5
5
5
5
5
5
5
5
8
6
5
5
6
7
5
5
9
9
9
  • 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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