Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 8 pm 23 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 23 Jun 2026:

  • Best quality surf: Sunday 28 Jun, 3AM (local time) - 25ft (7.5m), 13s period, SW swell with cross-shore winds.
  • Most powerful swell: Sunday 28 Jun, 6AM (local time) - 20ft (6.0m), 16s period, SW swell with 17,298 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 24 Jun, 9PM (local time) - 2ft (0.6m), 11s period with SE 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 Wednesday (Jun 24) at 9PM. The primary swell is predicted to be 0.6m and 11s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 6.0m 16s and forecast to arrive on Sunday (Jun 28) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 10s period and expected on Wednesday (Jun 24) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Wed 24th Jun)2ft (0.6m) 11s
Best Surf 3AM (Sun 28th Jun)25ft (7.5m) 13s
Most Powerful 6AM (Sun 28th Jun)20ft (6.0m) 16s

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 39mm), heaviest during Thu morning. Warm (max 25°C on Fri morning, min 20°C on Tue night). Winds increasing (calm on Thu night, strong winds from the SSW by Fri afternoon).

Days 5-7 Weather Summary

Heavy rain (total 130mm), heaviest during Sat night. Warm (max 24°C on Sat night, min 21°C on Fri night). Mainly stormy winds.

Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tue
30
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
0
0
1
1
0
2
0
0
0
2
3
0
6
3
3
2
0
0
0
1
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)
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.6
SE
11
0.6
SSW
13
0.9
SW
14
0.8
SW
14
1.3
SW
14
2.5
SW
7
1.3
SW
14
1.5
SW
14
1.6
SW
13
1.6
SW
14
4
SW
14
2.2
SW
12
1.3
SW
10
0.9
SW
9
0.8
SW
9
0.7
SE
9
0.6
SE
9
0.6
SE
9
Wave Graph
Metric surfscale
Energy kJ
55
55
56
72
112
304
228
650
671
632
837
905
930
6308
1313
362
144
103
90
67
52
Wind (km/h)
15
NNE
15
NNE
10
ESE
5
ESE
25
ENE
35
N
5
NNE
25
SSW
45
SSW
35
SW
20
N
10
S
90
NNW
15
SSE
20
E
10
ENE
25
ENE
25
ENE
15
E
15
E
10
ESE
Wind State
off
off
cross-off
cross-off
cross-off
cross-off
glassy
on
on
on
cross-off
cross-on
cross-off
cross
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
High Tide
10:59PM1.28m
1:21PM1.04m
11:41PM1.29m
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
Low Tide
6:29AM0.50m
5:36PM0.89m
7:28AM0.39m
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
part cloud
clear
cloud
light rain
heavy rain
heavy rain
cloud
thunderstorm
light rain
heavy rain
rain showers
heavy rain
rain showers
clear
cloud
part cloud
cloud
light rain
light rain
rain showers
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:26
4:28
4:28
4:28
4:28
4:28
4:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:57
6:58
6:58
6:58
6:58
6:58
6:58
 mm
3
19
12
1
4
17
2
44
66
1
5
1
Temp °C
20
22
22
22
20
20
21
25
25
23
23
22
24
23
23
23
22
22
22
23
23
Feels °C
20
23
23
24
18
16
21
23
21
26
24
25
23
24
23
25
21
21
22
24
24
Swell 1
Height (m)
Direction
Period (s)
1.3
ENE
10
1.2
ENE
10
1
ENE
9
0.8
ENE
9
0.6
SSW
13
0.9
SW
14
1.1
S
7
1.3
SW
14
0.4
SE
11
1.3
SW
14
1.5
SW
14
1.6
SW
13
1.6
SW
14
4
SW
14
2.2
SW
12
1.3
SW
10
0.9
SW
9
0.8
SW
9
0.7
SE
9
0.6
SE
9
0.6
SE
9
Energy kJ
301
248
181
101
108
304
110
650
30
632
837
905
930
6308
1313
362
144
95
90
67
52
Swell 2
Height (m)
Direction
Period (s)
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.6
SE
11
0.5
SW
15
0.4
SE
10
0.9
SW
8
0.7
SSE
6
0.2
ENE
10
0.4
SE
10
0.7
SSE
6
1.6
SSE
8
0.2
ESE
16
0.2
ESE
16
1.4
SSE
8
1.1
SSE
8
0.6
SE
9
0.8
SSE
9
0.6
SW
8
0.6
E
5
0.5
SW
8
Energy kJ
55
55
56
72
112
35
88
33
10
37
32
306
25
25
270
149
52
103
54
20
28
Swell 3
Height (m)
Direction
Period (s)
0.3
SW
6
0.1
SW
6
0.2
S
12
0.3
SW
14
0.4
SE
10
0.4
ENE
8
0.8
SW
14
0.4
SE
11
0.2
ESE
18
0.3
E
10
0.4
SE
10
0.6
E
8
0.1
NE
9
0.2
E
16
0.3
ESE
15
0.3
ESE
15
0.3
ESE
15
0.4
NE
7
0.3
ESE
14
0.6
SW
8
0.3
ESE
14
Energy kJ
6
1
10
33
36
20
228
43
31
18
35
52
3
20
44
42
42
13
41
38
36
Wind waves
Height (m)
Direction
Period (s)
0.7
ENE
8
1.1
ESE
4
0.4
NW
4
1
SW
6
2.5
SW
7
1.7
SW
6
0.5
E
8
2.4
SSE
6
0.5
E
4
0.9
ESE
7
0.6
E
4
0.6
E
5
1
ESE
6
Energy kJ
70
50
5
80
671
219
33
484
9
70
13
16
72
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
2
1
2
3
3
2
1
4
3
3
2
1
1
1
1
Distance (km)
12
12
36
0
90
55
0
61
500
88
12
47
73
148
47
0
0
50
14
36
0
Best forecast wave conditions in Chiba
Rating
(10 max)
2
2
2
1
2
2
3
2
3
2
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
3
2
4
1
4
4
4
3
3
4
2
5
4
4
3
2
2
1
1
1
Header Global
Rating
(10 max)
5
8
9
8
5
5
5
5
6
5
5
5
5
5
9
8
5
6
6
5
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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