Mera Surf Break

Lat Long: 34.90° N 139.84° E

Mera Surf Forecast and Surf Report

Issued: 2 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
27.8°C
0.9° 

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


Mera surf forecast from 26 Aug 2026:

  • Best quality surf: Thursday 27 Aug, 12PM (local time) - 2.5ft (0.8m), 11s period, SW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 1 Sep, 9PM (local time) - 5.5ft (1.7m), 14s period, S swell with 1,094 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 12PM (local time) - 2.5ft (0.8m), 11s 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 Thursday (Aug 27) at 12PM. The primary swell is predicted to be 0.8m and 11s period with a secondary swell of 0.5m and 10s. Another secondary swell of 1.0m and 6s is also forecast. 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 1.7m 14s and forecast to arrive on Tuesday (Sep 01) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Saturday (Aug 29) at 6PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Thu 27th Aug)2.5ft (0.8m) 11s
Best Surf12PM (Thu 27th Aug)2.5ft (0.8m) 11s
Most Powerful 9PM (Tue 1st Sep)5.5ft (1.7m) 14s

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


Short Range Forecast

Moderate rain (total 18mm), heaviest on Thu morning. Warm (max 28°C on Wed morning, min 24°C on Thu afternoon). Winds decreasing (fresh winds from the SW on Wed afternoon, light winds from the NNW by Fri night).

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Sat morning. Warm (max 26°C on Sat morning, min 24°C on Sat night). Wind will be generally light.

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
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)
0
0
0
0
2
0
0
0
2
1
1
0
0
0
0
0
0
1
1
3
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
SSW
11
1
SSW
12
0.9
SW
11
0.9
SW
11
0.8
SW
10
0.8
E
13
0.8
E
12
0.7
E
12
0.7
E
12
0.6
E
12
0.6
E
11
0.4
SW
6
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SW
10
0.4
SSW
11
0.6
S
10
0.7
S
10
1.4
S
16
1.7
S
13
Wave Graph
Metric surfscale
Energy kJ
278
260
176
169
124
215
196
138
137
98
94
12
26
27
35
33
50
73
87
967
986
Wind (km/h)
25
WSW
35
SW
35
SW
20
WSW
10
NNE
15
SSW
20
WSW
25
WSW
10
NNW
15
ENE
15
ENE
15
NE
10
NNE
10
NNE
10
NNE
5
N
5
SW
5
SSE
5
SE
15
SSE
15
SSE
Wind State
on
on
on
cross-on
off
cross-on
on
on
cross-off
off
off
off
off
off
cross-off
cross-off
glassy
glassy
glassy
cross
cross-on
High Tide
4:44PM1.42m
3:22AM1.46m
5:04PM1.46m
4:01AM1.53m
5:23PM1.49m
4:39AM1.56m
5:42PM1.51m
5:18AM1.56m
6:00PM1.53m
5:58AM1.53m
6:19PM1.53m
6:42AM1.47m
6:38PM1.53m
Low Tide
9:44AM0.22m
9:58PM0.87m
10:16AM0.18m
10:28PM0.77m
10:45AM0.18m
10:57PM0.67m
11:14AM0.23m
11:27PM0.57m
11:42AM0.31m
11:59PM0.48m
12:10PM0.44m
00:34AM0.40m
12:38PM0.59m
1:12AM0.36m
clear
clear
rain showers
mod rain
cloud
light rain
thunderstorm
part cloud
rain showers
light rain
cloud
light rain
cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:07
5:07
5:09
5:09
5:11
5:11
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:15
6:15
6:13
6:12
6:10
6:08
6:07
 mm
2
6
3
3
4
2
1
6
Temp °C
28
28
27
27
26
26
27
27
26
26
26
25
24
25
25
25
26
26
27
28
27
Feels °C
29
28
28
29
29
27
28
28
27
27
27
25
26
28
28
29
31
31
32
31
30
  • 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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