Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 8 am 25 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
23.5° 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 25 Jun 2026:

  • Best quality surf: Sunday 28 Jun, 9AM (local time) - 11ft (3.5m), 12s period, SSW swell with glassy winds.
  • Most powerful swell: Sunday 28 Jun, 6AM (local time) - 15ft (4.5m), 13s period, SSW swell with 6,020 kJ wave energy.
  • Next surfable swell (1★+): Friday 26 Jun, 12AM (local time) - 3ft (0.9m), 13s 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 Friday (Jun 26) at 12AM. The primary swell is predicted to be 0.9m and 13s period. 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 4.5m 13s and forecast to arrive on Sunday (Jun 28) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 7s period and expected on Thursday (Jun 25) at 6PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 26th Jun)3ft (0.9m) 13s
Best Surf 9AM (Sun 28th Jun)11ft (3.5m) 12s
Most Powerful 6AM (Sun 28th Jun)15ft (4.5m) 13s

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 182mm), heaviest during Sat morning. Warm (max 25°C on Fri morning, min 20°C on Thu night). Winds increasing (calm on Thu night, strong winds from the W by Fri night).

Days 4-6 Weather Summary

Moderate rain (total 15mm), heaviest on Mon night. Warm (max 23°C on Sun morning, min 21°C on Mon night). Wind will be generally light.

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
1
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
2
0
0
0
1
2
3
5
3
2
1
2
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)
0.6
SW
15
0.9
SW
14
0.9
SW
13
2
SSW
14
1.2
SW
14
1.3
SW
13
1.4
SW
13
1.8
SW
9
2.5
S
12
3.5
SSW
12
1.9
SW
11
1.3
SW
10
1
SW
9
0.9
SW
9
1
SW
8
0.8
SE
9
0.7
SE
9
0.6
SE
9
0.8
SSW
8
0.6
SE
9
0.6
SE
9
Wave Graph
Metric surfscale
Energy kJ
143
304
269
1576
541
562
623
528
1747
3017
762
290
162
129
138
97
81
67
74
65
64
Wind (km/h)
25
E
25
NE
10
N
35
SW
40
SW
40
W
30
E
15
NNW
25
NE
5
SW
20
ESE
10
ESE
15
E
15
ESE
15
ESE
25
E
25
E
20
N
15
N
10
SW
20
S
Wind State
cross-off
off
cross-off
on
on
cross-on
cross-off
cross-off
off
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
on
cross-on
High Tide
2:46PM1.12m
00:28AM1.32m
3:44PM1.20m
1:19AM1.34m
4:27PM1.26m
2:08AM1.37m
5:03PM1.31m
2:53AM1.39m
5:36PM1.35m
3:34AM1.41m
6:07PM1.37m
4:12AM1.43m
6:38PM1.37m
Low Tide
6:51PM0.98m
8:17AM0.29m
8:01PM1.01m
9:00AM0.20m
8:58PM1.01m
9:40AM0.14m
9:46PM0.98m
10:17AM0.09m
10:26PM0.95m
10:52AM0.05m
11:03PM0.92m
11:27AM0.04m
11:39PM0.90m
heavy rain
light rain
light rain
cloud
light rain
heavy rain
heavy rain
cloud
rain showers
cloud
light rain
light rain
light rain
cloud
light rain
rain showers
light rain
thunderstorm
cloud
light rain
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:28
4:28
4:28
4:28
4:28
4:28
4:30
<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
15
5
3
1
12
75
71
2
4
1
4
1
2
1
2
23
Temp °C
21
21
22
25
24
23
21
22
22
23
22
22
22
22
22
22
22
22
23
23
22
Feels °C
20
19
24
24
21
20
20
23
23
26
22
23
23
22
22
21
21
23
25
25
24
Swell 1
Height (m)
Direction
Period (s)
0.6
SSW
13
1.2
S
7
0.9
SW
13
0.4
SE
11
1.2
SW
14
1.3
SW
13
1.4
SW
13
1.8
SW
9
1.1
SW
11
3.5
SSW
12
1.9
SW
11
1.3
SW
10
1
SW
9
0.9
SW
9
1
SW
8
0.8
SE
9
0.7
SE
9
0.7
SW
7
0.8
SSW
8
0.6
SE
9
0.6
SE
9
Energy kJ
108
142
269
43
541
562
623
528
326
3017
762
290
162
129
138
97
81
56
74
65
64
Swell 2
Height (m)
Direction
Period (s)
0.6
SW
15
0.9
SW
14
0.9
ENE
7
0.4
ENE
7
0.4
SE
11
1
SSW
6
0.4
SE
10
1.6
S
8
0.2
ESE
16
0.6
N
5
1.4
SSE
8
1.1
SSE
8
0.9
SSE
7
0.7
SSE
7
0.9
SSE
7
0.8
SW
9
0.6
SW
9
0.6
SE
9
0.6
SE
9
0.6
SW
7
0.5
S
4
Energy kJ
143
304
68
15
42
88
35
316
25
15
277
153
76
40
68
95
59
67
67
31
9
Swell 3
Height (m)
Direction
Period (s)
0.4
SE
10
0.4
SE
10
0.8
SSE
7
0.3
NE
10
0.2
E
7
0.4
SE
10
0.3
ESE
16
0.6
ENE
8
0.1
NE
9
0.2
ESE
16
0.3
ESE
15
0.4
ENE
8
0.4
SE
9
0.6
SE
9
0.6
SE
9
0.3
ENE
6
0.3
ESE
14
0.3
ESE
13
0.3
ESE
13
0.5
S
5
0.4
SW
6
Energy kJ
36
35
50
15
3
37
51
53
3
25
44
22
30
52
49
7
36
35
35
13
14
Wind waves
Height (m)
Direction
Period (s)
0.7
E
8
1.7
ENE
6
2
SSW
14
1.7
SW
6
0.4
ENE
9
0.9
NE
4
2.5
S
12
0.4
NNW
4
0.3
N
3
0.9
ENE
4
0.9
ENE
6
0.8
ENE
7
0.7
ENE
6
0.4
SW
4
Energy kJ
66
218
1576
223
25
29
1747
5
2
24
64
58
44
6
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
2
3
2
1
3
4
5
2
2
1
2
1
1
1
1
1
1
1
Distance (km)
57
14
0
483
244
148
64
12
14
0
47
0
14
0
14
500
504
12
12
36
33
Best forecast wave conditions in Chiba
Rating
(10 max)
1
2
1
3
4
5
3
2
1
2
1
2
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
3
3
3
5
3
2
3
3
4
5
4
3
2
2
2
2
1
2
2
2
1
Header Global
Rating
(10 max)
5
5
5
6
7
5
6
6
5
6
6
5
6
5
9
7
5
5
7
5
6
  • 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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