Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 2 am 23 Jun 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
23.6° 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 22 Jun 2026:

  • Best quality surf: Thursday 25 Jun, 12PM (local time) - 2.5ft (0.7m), 13s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 28 Jun, 3PM (local time) - 16ft (5.0m), 16s period, SW swell with 13,412 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 23 Jun, 9AM (local time) - 1.5ft (0.5m), 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 Tuesday (Jun 23) at 9AM. The primary swell is predicted to be 0.5m and 11s period with a secondary swell of 0.6m and 7s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 5.0m 16s and forecast to arrive on Sunday (Jun 28) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Monday (Jun 29) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Tue 23rd Jun)1.5ft (0.5m) 11s
Best Surf12PM (Thu 25th Jun)2.5ft (0.7m) 13s
Most Powerful 3PM (Sun 28th Jun)16ft (5.0m) 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 27mm), heaviest during Thu night. Warm (max 23°C on Thu night, min 19°C on Tue morning). Winds increasing (light winds from the SSE on Wed night, near gales from the SW by Thu night).

Days 4-6 Weather Summary

Light rain (total 8mm), mostly falling on Sat night. Warm (max 25°C on Sat night, min 21°C on Sun night). Winds increasing (light winds from the SW on Sat morning, severe gales from the SW by Sun morning).

Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
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
0
0
0
0
0
1
1
0
0
0
0
1
0
0
0
0
2
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.6
SE
11
0.6
SW
15
1
SW
14
3
SW
7
3
SW
7
3
SW
8
2.3
SW
14
1.3
SW
13
1.3
SW
13
1.3
SW
12
3.5
SSW
8
5
SW
16
2.3
SW
12
1.3
SW
10
1
SW
10
0.7
SE
10
Wave Graph
Metric surfscale
Energy kJ
60
59
55
55
56
71
183
373
893
742
1147
2201
637
618
488
1311
13412
1499
330
177
92
Wind (km/h)
25
NE
15
NE
15
NE
15
NNE
10
E
10
SSE
10
S
20
SE
40
SSW
55
SW
45
SW
40
WSW
20
SW
20
SSW
20
SSW
70
SSW
50
WSW
30
E
20
ENE
20
E
10
ESE
Wind State
off
off
off
off
cross-off
cross
cross-on
cross
on
on
on
on
on
on
on
cross-on
on
cross-off
cross-off
cross-off
cross-off
High Tide
11:30AM1.02m
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
Low Tide
4:35PM0.76m
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
cloud
part cloud
rain showers
part cloud
cloud
light rain
mod rain
mod rain
heavy rain
light rain
cloud
part cloud
part cloud
part cloud
rain showers
thunderstorm
part cloud
cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:26
4:26
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
 mm
1
1
6
7
12
2
5
1
Temp °C
21
21
21
22
22
22
20
21
23
23
23
23
24
24
25
25
25
23
21
21
22
Feels °C
20
20
20
23
23
23
21
20
20
16
19
18
25
25
21
17
20
20
20
20
22
Swell 1
Height (m)
Direction
Period (s)
0.6
SW
7
1.2
ENE
10
1.3
ENE
10
1.2
ENE
10
1
E
9
0.8
ENE
9
0.7
E
8
1
SW
14
0.6
E
6
0.4
ESE
11
0.4
SE
11
0.5
E
8
1.3
SW
13
1.3
SW
13
1.3
SW
12
0.2
ESE
16
0.3
ESE
15
2.3
SW
12
1.3
SW
10
1
SW
10
0.7
SE
10
Energy kJ
27
269
301
271
169
99
66
373
28
47
30
37
637
618
488
25
44
1499
330
177
92
Swell 2
Height (m)
Direction
Period (s)
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.6
SE
11
0.6
SSW
13
0.5
SE
10
0.4
SE
10
0.2
ESE
18
0.3
E
8
0.4
SE
11
0.5
E
9
0.4
ESE
8
0.9
SSE
6
0.1
SW
19
1.3
SSE
8
0.9
SSE
8
0.8
SSE
9
0.7
SW
9
Energy kJ
60
59
55
55
56
71
108
49
36
31
10
29
39
22
59
14
229
85
99
76
Swell 3
Height (m)
Direction
Period (s)
0.1
E
15
0.4
SW
6
0.3
SW
6
0.2
SSW
5
0.2
SSW
12
0.3
SW
14
0.6
SW
15
0.4
SSW
10
0.2
ENE
10
0.2
ENE
10
0.2
ESE
18
0.2
ESE
18
0.3
ESE
16
0.3
ESE
16
0.4
ESE
8
0.1
NE
9
0.3
ESE
15
0.3
ESE
15
0.2
ESE
15
0.6
ENE
9
Energy kJ
4
10
6
3
13
33
183
36
10
10
31
30
51
51
20
3
42
42
21
59
Wind waves
Height (m)
Direction
Period (s)
1.3
ENE
10
0.7
E
8
3
SW
7
3
SW
7
3
SW
8
2.3
SW
14
1.6
S
8
1.3
S
6
3.5
SSW
8
5
SW
16
0.6
ENE
3
1.3
ENE
6
0.8
ENE
5
Energy kJ
296
58
893
742
1147
2201
294
137
1311
13412
6
111
32
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
2
1
1
2
1
1
3
3
1
3
1
1
5
3
2
1
1
1
Distance (km)
0
47
40
40
36
47
36
39
61
504
504
60
36
87
61
521
60
501
39
47
0
Best forecast wave conditions in Chiba
Rating
(10 max)
1
2
2
1
1
1
2
3
1
3
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
3
2
2
2
2
3
1
3
3
4
3
3
1
1
5
4
2
2
1
1
Header Global
Rating
(10 max)
5
5
5
7
9
8
6
5
5
5
6
5
5
5
5
5
8
9
7
7
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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