Mera surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 pm Monday 27 Apr 2026 JST
Forecast update in hr  min  s Forecast update imminent
Mera surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mera sea temperature is
20.5° C
(Which is 1.5°C warmer than normal for this time of year)

How big are the waves at Mera today?

The current surf forecast for Mera at 2AM is: 1.1m 7s primary swell from a Southwest direction and 0.7m 7s secondary swell from a East-southeast direction (forecast issued at 08:00pm April 27). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be glassy.

Time (JST) & DateWave HeightWave Period
Morning (28 Apr)2.5ft (0.7m)7s
Afternoon (28 Apr)3.5ft (1.0m)4s
Evening (28 Apr)5.5ft (1.7m)6s

Table - waves today at Mera. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 3mm), mostly falling on Wed night. Warm (max 20°C on Wed afternoon, min 12°C on Wed night). Winds decreasing (strong winds from the SW on Tue night, light winds from the NNW by Wed afternoon).

Mon
27
Tuesday
28
Wednesday
29
Thursday
30
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
Rating
(10 max)
0
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
1
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
1.2
SSW
7
1.3
SSW
7
1.2
SW
7
1
SW
7
0.9
SW
7
0.7
SW
7
0.7
SW
7
0.5
E
8
1.5
SW
5
1.7
SW
6
1.7
SW
6
1.8
SW
6
2.1
SW
6
1.7
SW
6
1.6
SW
6
1.7
SW
6
1.8
SW
6
1.4
SW
6
1
SW
6
0.7
SW
6
0.6
SW
6
0.3
SE
9
0.3
SE
9
1.5
E
7
Wave Graph
Metric surfscale
Energy kJ
128
160
160
107
75
47
46
30
122
183
178
209
317
224
177
205
231
152
76
39
25
14
12
202
Wind (km/h)
30
NNE
20
NE
10
ENE
5
SSE
10
SSW
20
SSW
25
S
35
SW
40
SW
45
SW
45
SW
45
SW
40
SW
35
WSW
25
WSW
25
WSW
5
NNW
35
ENE
30
NE
30
NE
30
NE
25
NE
25
ENE
25
ENE
cross-off
off
off
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
cross-on
on
cross-off
off
off
off
off
off
off
cross-off
High Tide
2:28AM1.20m
2:52PM1.16m
2:50AM1.26m
3:41PM1.23m
3:12AM1.32m
Low Tide
7:57PM0.43m
8:46AM0.45m
8:41PM0.49m
9:18AM0.29m
9:18PM0.54m
9:49AM0.15m
light rain
clear
clear
cloud
cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
light rain
light rain
light rain
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:54
4:52
4:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:21
6:22
6:22
6:23
1
1
1
1
Temp °C
17
16
15
16
17
18
19
19
19
19
19
19
19
19
19
20
18
16
15
14
12
13
15
15
12
13
14
15
15
15
16
14
13
13
13
13
13
14
15
16
18
10
9
9
5
7
9
9
Swell 1
Height (m)
Direction
Period (s)
1.2
SSW
7
1.3
SSW
7
1.2
SW
7
1
SW
7
0.9
SW
7
0.7
SW
7
0.5
E
8
0.5
E
8
0.5
E
8
0.5
E
8
0.5
E
9
0.4
E
9
0.4
E
9
0.4
E
9
0.4
E
9
0.3
ESE
9
0.3
ESE
9
1.4
SW
6
1
SW
6
0.7
SW
6
0.6
SW
6
0.4
SW
6
0.4
SW
6
0.3
SE
9
Energy kJ
128
160
160
107
75
47
29
29
29
29
40
26
26
25
25
15
15
152
76
39
25
14
10
12
Swell 2
Height (m)
Direction
Period (s)
0.9
ESE
7
0.8
ESE
7
0.8
ESE
7
0.6
ESE
7
0.5
ESE
7
0.5
ESE
7
0.3
ENE
8
0.4
SE
7
0.4
SE
7
0.4
SSE
7
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
NE
8
0.3
E
9
0.1
SE
8
0.2
SSE
8
0.3
SE
8
0.3
SE
9
0.3
SE
9
0.3
SW
6
Energy kJ
84
68
62
43
31
31
12
12
12
18
5
5
5
5
5
5
2
14
3
6
11
12
12
6
Swell 3
Height (m)
Direction
Period (s)
0.2
ENE
8
0.2
ENE
8
0.2
ENE
8
0.6
ENE
8
0.4
ENE
8
0.3
ENE
8
0.3
SSE
7
0.2
ENE
7
0.2
ENE
7
0.1
SE
11
0.1
S
14
0.1
S
13
0.1
S
13
0.1
S
13
0.1
NE
9
0.1
NE
8
0.1
S
13
0.1
NE
7
0.1
SE
11
0.1
SE
11
0.1
S
12
0.1
S
12
0.1
S
12
Energy kJ
6
6
6
40
26
12
9
5
5
5
4
4
3
3
3
3
3
2
5
4
3
3
3
Wind waves
Height (m)
Direction
Period (s)
0.3
N
2
0.6
NE
3
0.6
ENE
4
0.7
SW
7
1
SW
4
1.5
SW
5
1.7
SW
6
1.7
SW
6
1.8
SW
6
2.1
SW
6
1.7
SW
6
1.6
SW
6
1.7
SW
6
1.8
SW
6
0.4
NE
5
1.7
ENE
6
1.6
ENE
6
1.6
ENE
6
1.5
ENE
6
1.6
ENE
7
1.5
E
7
Energy kJ
1
7
13
46
30
122
183
178
209
317
224
177
205
231
10
170
196
185
183
206
202
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
1
1
1
1
1
1
1
1
1
2
2
1
2
2
1
1
1
1
1
1
1
Distance (km)
69
0
0
12
64
64
64
2074
808
526
244
526
59
36
36
12
0
813
77
1081
1081
1081
1419
1425
Best forecast wave conditions in Chiba
Rating
(10 max)
2
2
1
1
1
1
2
3
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
1
1
1
1
1
1
1
1
2
3
2
2
2
1
1
1
1
1
1
Header Global
Rating
(10 max)
6
6
6
6
5
5
5
5
5
5
5
8
9
9
9
8
7
6
9
9
8
6
5
5
  • 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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