Surf Break

Lat Long: 34.90° N 139.84° E

Mera Surf Forecast and Surf Report

Issued: 2 pm 27 Sep 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
25.5°C
0.4° 

Mera surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Mera surf forecast from 27 Sep 2026:

  • Best quality surf: Tuesday 29 Sep, 6AM (local time) - 3ft (0.9m), 13s period, SW swell with offshore winds.
  • Most powerful swell: Sunday 4 Oct, 9PM (local time) - 7.5ft (2.3m), 15s period, SSE swell with 2,548 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 29 Sep, 6AM (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 Tuesday (Sep 29) at 6AM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 1.2m and 6s. Another secondary swell of 1.3m and 6s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 2.3m 15s and forecast to arrive on Sunday (Oct 04) at 9PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Friday (Oct 02) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Tue 29th Sep)3ft (0.9m) 13s
Best Surf 6AM (Tue 29th Sep)3ft (0.9m) 13s
Most Powerful 9PM (Sun 4th Oct)7.5ft (2.3m) 15s

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


Short Range Forecast

Heavy rain (total 31mm), heaviest during Tue night. Warm (max 24°C on Mon morning, min 19°C on Tue afternoon). Winds increasing (calm on Sun afternoon, strong winds from the SW by Mon morning).

Days 5-7 Weather Summary

Heavy rain (total 29mm), heaviest during Thu night. Warm (max 26°C on Thu night, min 19°C on Wed afternoon). Mainly strong winds.

Sun
27
Monday
28
Tuesday
29
Wednesday
30
Thursday
1
Friday
2
Saturday
3
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
1
2
2
2
1
1
2
3
3
0
0
1
1
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
SSW
6
0.8
SSW
6
1.5
SSW
6
1.2
SSW
5
1.3
SSW
7
1.1
SW
13
1.1
SW
12
1.1
SW
12
0.9
SW
11
1
SW
11
1
SW
10
1.1
SSW
10
3
S
8
1.8
S
9
0.9
SE
7
0.7
SE
7
1.4
ESE
7
1.6
ESE
7
2
ESE
8
2.4
ESE
9
Wave Graph
Metric surfscale
Energy kJ
43
47
143
72
158
380
346
361
202
242
208
235
1004
529
82
45
171
284
474
921
Wind (km/h)
5
NNE
20
SW
40
SW
30
WSW
15
WSW
25
NE
20
NE
20
NE
25
NE
25
NNE
20
N
10
E
10
SSW
5
E
30
NE
30
ENE
25
NE
30
NE
35
NE
35
NNE
Wind State
glassy
on
on
on
on
off
off
off
off
off
cross-off
cross-off
on
glassy
off
off
off
off
off
off
High Tide
4:47PM1.54m
5:14AM1.58m
5:07PM1.57m
5:58AM1.55m
5:28PM1.58m
6:44AM1.47m
5:50PM1.58m
7:37AM1.37m
6:13PM1.55m
8:46AM1.25m
6:39PM1.49m
10:44AM1.17m
7:08PM1.41m
Low Tide
11:00PM0.31m
11:13AM0.54m
11:33PM0.22m
11:43AM0.66m
00:10AM0.16m
12:11PM0.80m
00:50AM0.16m
12:39PM0.93m
1:37AM0.20m
1:05PM1.04m
2:36AM0.29m
1:25PM1.14m
cloud
light rain
thunderstorm
thunderstorm
cloud
cloud
light rain
heavy rain
light rain
cloud
part cloud
light rain
light rain
thunderstorm
part cloud
part cloud
clear
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
5:31
—
—
5:33
—
—
5:33
—
—
5:33
—
—
5:35
—
—
5:35
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:30
—
—
5:30
—
—
5:28
—
—
5:27
—
—
5:25
—
—
5:23
—
—
5:22
—
 mm
—
5
1
4
—
—
4
14
3
—
—
1
5
23
—
—
—
—
—
—
Temp °C
23
23
24
24
24
23
20
20
20
19
21
24
25
26
22
21
21
20
21
19
Feels °C
26
21
21
23
26
21
19
18
18
16
24
27
26
23
19
16
17
15
15
13
  • 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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