Mera Surf Break

Mera Surf Forecast and Surf Report

Lat Long: 34.90° N 139.84° E

Issued: 8 pm 05 Jul 2026 (local time)

Forecast update in  hr  min

Today's Mera sea temperature is
23.8° 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 5 Jul 2026:

  • Best quality surf: Wednesday 8 Jul, 9AM (local time) - 7.5ft (2.3m), 17s period, SSE swell with offshore winds.
  • Most powerful swell: Saturday 11 Jul, 9AM (local time) - 11ft (3.5m), 17s period, SSW swell with 6,346 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 7 Jul, 3AM (local time) - 3.5ft (1.1m), 12s 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 3AM. The primary swell is predicted to be 1.1m and 12s period with a secondary swell of 0.7m and 16s. Another secondary swell of 1.2m and 7s 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 3.5m 17s and forecast to arrive on Saturday (Jul 11) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 7th Jul)3.5ft (1.1m) 12s
Best Surf 9AM (Wed 8th Jul)7.5ft (2.3m) 17s
Most Powerful 9AM (Sat 11th Jul)11ft (3.5m) 17s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 4mm), mostly falling on Sun night. Warm (max 24°C on Tue morning, min 22°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 24°C on Thu morning, min 23°C on Wed night). Wind will be generally light.

Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
Sun
12
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
1
1
1
2
3
3
4
5
5
4
4
4
4
4
3
5
5
3
3
2
2
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)
1.4
SE
7
0.8
SE
14
0.9
SE
13
0.7
SSE
16
1.1
SSE
16
1.4
SSE
14
1.7
SSE
16
2.3
SSE
17
2.5
SSE
16
2.4
SSE
16
2.4
S
15
2.4
S
16
2.5
S
15
3
S
17
3
SSW
16
3
SSW
18
3.5
SSW
17
3
SSW
17
3
SSW
17
2.5
SSW
16
2.5
SW
16
Wave Graph
Metric surfscale
Energy kJ
173
245
286
244
589
834
1361
3105
3173
2662
2508
2768
2987
4732
4447
6005
6346
5619
5582
3880
3118
Wind (km/h)
20
ESE
20
E
20
E
20
E
20
NE
20
E
15
ENE
10
NE
15
E
10
E
10
ESE
15
SE
10
SSE
10
SSE
20
SSE
10
SSW
10
SSE
15
SSE
20
S
20
S
20
S
Wind State
cross-off
cross-off
cross-off
cross-off
off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
7:38AM1.27m
8:57PM1.33m
8:41AM1.18m
9:26PM1.34m
10:08AM1.11m
10:01PM1.34m
12:08PM1.09m
10:47PM1.35m
2:11PM1.17m
11:46PM1.37m
3:34PM1.28m
00:56AM1.41m
4:28PM1.38m
Low Tide
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
6:07PM1.06m
7:47AM0.20m
7:50PM1.12m
8:47AM0.06m
light rain
cloud
cloud
light rain
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
part cloud
clear
clear
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:31
4:33
4:33
4:33
4:33
4:35
4:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:57
6:57
6:57
6:57
6:55
6:55
6:55
 mm
3
1
Temp °C
23
23
23
23
24
24
23
24
24
23
24
24
24
24
24
23
24
24
24
25
24
Feels °C
23
23
22
23
24
23
23
25
25
24
26
25
26
26
24
24
25
24
24
25
24
Swell 1
Height (m)
Direction
Period (s)
0.4
SW
6
0.8
SE
14
0.9
SE
13
0.9
SE
12
1.1
SSE
16
1.4
SSE
14
1.7
SSE
16
2.3
SSE
17
2.5
SSE
16
2.4
SSE
16
2.4
S
15
2.4
S
16
2.5
S
15
3
S
17
3
SSW
16
3
SSW
18
3.5
SSW
17
3
SSW
17
3
SSW
17
2.5
SSW
16
2.5
SW
16
Energy kJ
15
245
286
244
589
834
1361
3105
3173
2662
2508
2768
2987
4732
4447
6005
6346
5619
5582
3880
3118
Swell 2
Height (m)
Direction
Period (s)
0.4
SE
15
0.4
SW
7
0.4
SW
7
0.7
SSE
16
1.1
SE
11
0.9
SSE
18
1.2
E
8
1.2
ESE
8
1
ESE
8
0.9
ESE
8
0.9
ESE
8
1.6
SSW
17
0.9
ESE
8
0.9
ESE
10
0.6
E
10
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
Energy kJ
55
11
11
212
288
597
186
197
140
116
107
1302
107
135
67
41
41
41
41
41
Swell 3
Height (m)
Direction
Period (s)
0.3
ESE
11
0.3
ENE
8
0.1
NE
8
0.3
SW
6
0.3
SW
6
0.8
S
20
1.2
S
18
1
E
8
0.9
ESE
8
0.1
SE
14
0.1
SE
13
Energy kJ
22
13
3
6
6
536
952
131
99
7
7
Wind waves
Height (m)
Direction
Period (s)
1.4
SE
7
1.4
ESE
7
1.3
ESE
7
1.3
ESE
7
1.1
E
7
1.4
ESE
10
1.2
E
7
Energy kJ
173
170
163
158
113
443
134
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
3
3
4
5
5
4
4
4
4
4
5
5
5
4
4
3
4
Distance (km)
70
14
39
14
0
14
0
0
0
0
0
0
47
14
64
64
47
64
64
61
64
Best forecast wave conditions in Chiba
Rating
(10 max)
1
1
2
3
3
4
5
5
5
4
4
4
4
5
5
5
4
4
4
4
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
2
3
3
3
4
5
5
5
5
5
8
8
9
9
5
9
5
4
4
Header Global
Rating
(10 max)
7
6
5
8
7
5
5
9
8
9
6
7
8
8
6
9
6
4
9
7
7
  • 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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