Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 2 pm 03 Jul 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
23.7° C

Slightly cooler than normal

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


Mera surf forecast from 3 Jul 2026:

  • Best quality surf: Tuesday 7 Jul, 6PM (local time) - 8ft (2.4m), 16s period, SE swell with offshore winds.
  • Most powerful swell: Wednesday 8 Jul, 3PM (local time) - 10ft (3.0m), 16s period, SSE swell with 3,812 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 7 Jul, 3PM (local time) - 7.5ft (2.3m), 16s 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 (Jul 07) at 3PM. The primary swell is predicted to be 2.3m and 16s period with a secondary swell of 1.2m and 8s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 3.0m 16s and forecast to arrive on Wednesday (Jul 08) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Sunday (Jul 05) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Tue 7th Jul)7.5ft (2.3m) 16s
Best Surf 6PM (Tue 7th Jul)8ft (2.4m) 16s
Most Powerful 3PM (Wed 8th Jul)10ft (3.0m) 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 48mm), heaviest during Sat night. Warm (max 24°C on Sat afternoon, min 21°C on Sat night). Winds increasing (light winds from the WSW on Sat night, fresh winds from the NE by Mon morning).

Days 5-7 Weather Summary

Moderate rain (total 10mm), heaviest on Mon afternoon. Warm (max 23°C on Tue afternoon, min 21°C on Mon night). Winds decreasing (fresh winds from the NE on Mon afternoon, calm by Thu morning).

Fri
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
1
0
0
0
0
0
0
0
1
1
2
2
4
4
5
5
4
4
4
4
5
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)
0.8
SW
7
0.6
SW
7
0.5
SW
7
0.4
SE
11
0.3
SE
10
0.1
SE
10
1.8
ESE
7
1.8
ESE
7
1.6
ESE
7
1.5
ESE
7
0.7
SSE
16
1.3
SSE
17
2.3
SE
16
2.3
SSE
16
1.7
SSE
18
3
SSE
16
2.4
SSE
15
2.3
S
14
2.4
S
15
1.6
SSW
17
2.5
S
16
Wave Graph
Metric surfscale
Energy kJ
65
33
23
31
15
4
306
330
245
228
240
890
2709
2648
1726
3812
2394
2247
2697
1463
3386
Wind (km/h)
10
E
10
ENE
10
ESE
15
SSE
5
WSW
20
ESE
25
ESE
30
ENE
35
NE
30
NE
30
NNE
35
NNE
25
NE
20
NE
15
NE
15
E
10
ENE
10
NE
10
ESE
5
NE
5
NNW
Wind State
cross-off
cross-off
cross-off
cross
on
cross-off
cross-off
cross-off
off
off
off
cross-off
off
off
off
cross-off
cross-off
off
cross-off
glassy
glassy
High Tide
7:37PM1.36m
6:04AM1.39m
8:04PM1.35m
6:47AM1.34m
8:30PM1.34m
7:38AM1.27m
8:57PM1.33m
8:41AM1.18m
9:26PM1.34m
10:08AM1.11m
10:01PM1.34m
12:08PM1.09m
10:47PM1.35m
Low Tide
00:49AM0.84m
1:06PM0.15m
1:27AM0.80m
1:40PM0.25m
2:11AM0.75m
2:15PM0.39m
3:04AM0.68m
2:52PM0.56m
4:07AM0.59m
3:36PM0.74m
5:22AM0.49m
4:35PM0.92m
6:39AM0.35m
cloud
part cloud
light rain
light rain
heavy rain
light rain
mod rain
heavy rain
light rain
light rain
light rain
part cloud
light rain
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:31
4:31
4:31
4:33
4:33
4:33
4:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:58
6:58
6:57
6:57
6:57
6:57
6:55
 mm
2
1
18
3
8
13
3
4
5
1
Temp °C
22
22
23
24
22
23
23
23
23
22
21
22
23
22
23
23
23
23
25
24
24
Feels °C
23
23
24
25
23
21
22
23
22
20
18
19
23
21
22
23
24
24
27
27
28
Swell 1
Height (m)
Direction
Period (s)
0.8
SW
7
0.6
SW
7
0.5
SW
7
0.4
ENE
8
0.5
E
8
0.1
SW
6
0.3
ESE
10
0.4
SW
7
1.6
ESE
7
1.5
ESE
7
1.2
ESE
7
1.5
ESE
11
2.3
SE
16
2.3
SSE
16
2
SSE
15
3
SSE
16
2.4
SSE
15
2.3
S
14
2.4
S
15
1.9
S
14
2.5
S
16
Energy kJ
65
33
23
22
33
1
21
18
245
228
156
527
2709
2648
1622
3812
2394
2247
2697
1463
3386
Swell 2
Height (m)
Direction
Period (s)
0.5
S
6
0.5
ENE
7
0.4
ENE
7
0.4
SW
7
0.2
WSW
6
0.1
SE
10
0.2
SSW
7
0.4
SE
15
0.6
SE
14
0.8
SE
13
0.8
SE
12
1.3
SSE
17
1.2
E
8
1.3
ESE
9
1.7
SSE
18
1
E
8
0.8
ESE
8
0.9
ESE
8
1
ESE
8
1.6
SSW
17
0.7
E
9
Energy kJ
18
27
20
11
4
4
5
55
158
196
197
890
187
258
1726
131
87
115
128
1302
79
Swell 3
Height (m)
Direction
Period (s)
0.3
ESE
9
0.4
SSE
6
0.2
ESE
9
0.4
SE
11
0.3
SE
10
0.1
NE
9
0.1
SE
16
0.1
SE
11
0.4
SW
7
0.3
SW
7
0.7
SSE
16
0.3
SW
7
0.4
SW
6
1.1
ESE
8
0.9
ESE
8
1
ESE
8
0.8
ESE
9
0.4
SE
11
Energy kJ
16
10
8
31
15
3
10
5
13
7
240
7
10
167
115
128
101
31
Wind waves
Height (m)
Direction
Period (s)
0.4
ENE
6
0.2
ESE
2
0.6
SSE
3
0.6
SSE
4
1.6
ESE
5
1.8
ESE
7
1.8
ESE
7
1
SSW
4
0.9
SW
4
Energy kJ
15
1
8
15
140
306
330
42
31
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
2
2
3
4
4
5
5
4
4
4
4
5
Distance (km)
0
36
64
64
35
500
47
39
57
153
90
153
0
0
0
0
0
0
0
0
0
Best forecast wave conditions in Chiba
Rating
(10 max)
1
1
1
1
1
2
4
4
5
5
4
4
4
5
5
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
2
2
2
3
3
3
4
4
5
6
5
5
8
6
6
Header Global
Rating
(10 max)
5
8
5
4
5
5
9
6
7
6
9
7
5
6
9
9
9
6
5
6
6
  • 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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