Mera Surf Break

Lat Long: 34.90° N 139.84° E

Mera Surf Forecast and Surf Report

Issued: 2 pm 02 Sep 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
27.1°C
0.3° 

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


Mera surf forecast from 2 Sep 2026:

  • Best quality surf: Friday 4 Sep, 3AM (local time) - 2.5ft (0.7m), 11s period, SSW swell with offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 9AM (local time) - 16ft (5.0m), 12s period, SSE swell with 7,751 kJ wave energy.
  • Next surfable swell (1★+): Friday 4 Sep, 12AM (local time) - 2.5ft (0.7m), 11s period with SSW 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 (Sep 04) at 12AM. The primary swell is predicted to be 0.7m and 11s period with a secondary swell of 0.5m and 6s. 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 12s and forecast to arrive on Wednesday (Sep 09) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 8s period and expected on Sunday (Sep 06) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 4th Sep)2.5ft (0.7m) 11s
Best Surf 3AM (Fri 4th Sep)2.5ft (0.7m) 11s
Most Powerful 9AM (Wed 9th Sep)16ft (5.0m) 12s

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


Short Range Forecast

Heavy rain (total 148mm), heaviest during Fri night. Warm (max 28°C on Thu morning, min 20°C on Fri night). Winds increasing (light winds from the S on Wed night, fresh winds from the NE by Fri night).

Days 5-7 Weather Summary

Heavy rain (total 218mm), heaviest during Sun night. Warm (max 28°C on Tue morning, min 21°C on Sun night). Winds decreasing (near gales from the N on Sun night, light winds from the ENE by Mon night).

Wed
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
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
1
1
0
0
1
0
0
0
0
1
0
0
1
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)
1
E
10
1
E
11
0.9
E
10
0.8
E
10
0.7
SSW
11
0.7
SSW
10
0.8
SSW
10
0.8
SSW
10
1.4
E
7
1.6
E
7
1.8
E
7
0.7
SW
10
0.6
SW
9
1.9
E
8
1.5
E
9
1.4
E
8
1.4
SSE
8
2
S
12
2.5
SSE
11
4
SSE
13
Wave Graph
Metric surfscale
Energy kJ
194
237
162
123
121
104
109
123
167
233
297
88
53
466
328
283
277
1117
1426
4552
Wind (km/h)
15
SE
10
S
15
SSW
25
SSW
20
NE
10
N
25
NNE
35
NE
30
NNE
35
NNE
35
NNE
40
NNE
30
ENE
45
NE
45
N
40
N
35
NE
40
SE
50
SSE
45
S
Wind State
cross
cross-on
on
on
off
cross-off
cross-off
off
off
off
off
off
off
off
cross-off
cross-off
off
cross
cross
cross-on
High Tide
6:58PM1.52m
8:33AM1.25m
7:21PM1.50m
10:10AM1.14m
7:49PM1.45m
8:29PM1.38m
3:39PM1.28m
10:32PM1.30m
3:39PM1.35m
1:03AM1.33m
3:58PM1.41m
2:21AM1.43m
Low Tide
1:57AM0.35m
1:29PM0.91m
2:55AM0.37m
1:46PM1.05m
4:17AM0.40m
6:04AM0.38m
6:50PM1.25m
7:32AM0.30m
8:28PM1.14m
8:33AM0.22m
9:07PM0.99m
part cloud
light rain
cloud
cloud
thunderstorm
thunderstorm
mod rain
heavy rain
heavy rain
light rain
cloud
light rain
mod rain
heavy rain
mod rain
light rain
heavy rain
mod rain
mod rain
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:13
5:13
5:15
5:16
5:16
5:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:07
6:05
6:04
6:02
6:00
6:00
5:58
 mm
3
2
1
8
120
14
1
3
8
166
10
3
17
10
9
28
Temp °C
27
27
28
28
27
25
23
22
21
22
22
23
24
24
22
22
25
28
28
27
Feels °C
28
30
30
30
30
28
22
20
18
18
18
20
22
21
18
18
27
26
25
25
  • 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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