Mera surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 am Tuesday 28 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 6AM is: 0.9m 7s primary swell from a Southwest direction and 0.5m 8s secondary swell from a East-southeast direction (forecast issued at 02:00am April 28). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (28 Apr)2.5ft (0.7m)7s
Afternoon (28 Apr)3ft (0.9m)6s
Evening (28 Apr)5ft (1.6m)6s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 21mm), heaviest during Thu night. Very mild (max 19°C on Tue morning, min 14°C on Wed night). Winds decreasing (strong winds from the SW on Tue night, light winds from the WNW by Thu night).

Tuesday
28
Wednesday
29
Thursday
30
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
6 PM
9 PM
Rating
(10 max)
2
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
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>
Wave
Height (m)
Direction
Period (s)
1.2
SW
7
1.1
SW
7
0.9
SW
7
0.7
SW
7
0.7
SW
7
0.9
SW
6
1.4
SW
5
1.6
SW
6
1.6
SW
6
1.8
SW
6
1.8
SW
6
1.5
SW
6
1.3
SW
6
1.3
SW
6
1.3
SW
6
1
SW
6
0.7
SW
6
0.6
SW
6
0.5
SW
6
0.4
SW
6
0.2
SSE
9
0.3
SW
6
0.2
SSE
9
1.5
ESE
6
Wave Graph
Metric surfscale
Energy kJ
160
126
73
47
46
59
98
163
165
216
236
167
132
132
132
72
34
27
16
11
8
6
8
150
Wind (km/h)
10
ENE
10
S
15
SSW
20
SSW
25
SSW
35
SW
45
SW
45
SW
45
SW
40
SW
35
WSW
15
WNW
10
NW
5
NE
25
ENE
35
ENE
30
ENE
25
NE
25
NE
25
NE
25
ENE
25
ENE
20
ENE
25
E
off
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
cross-on
cross
off
cross-off
off
off
off
off
off
off
cross-off
cross-off
cross-off
High Tide
2:28AM1.20m
2:52PM1.16m
2:50AM1.26m
3:41PM1.23m
3:12AM1.32m
4:23PM1.29m
Low Tide
8:46AM0.45m
8:41PM0.49m
9:18AM0.29m
9:18PM0.54m
9:49AM0.15m
clear
part cloud
clear
part cloud
cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
cloud
light rain
light rain
cloud
light rain
<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>
6:22
6:22
6:23
1
1
1
2
Temp °C
16
16
17
18
19
19
19
19
19
19
19
18
18
18
17
16
16
15
14
14
15
15
16
16
15
14
15
15
16
14
12
13
13
13
14
16
17
18
13
10
11
11
9
9
11
10
12
13
Swell 1
Height (m)
Direction
Period (s)
1.2
SW
7
1.1
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
0.4
E
9
0.4
E
9
0.4
E
9
0.4
E
9
0.3
E
9
0.3
ESE
9
1.3
SW
6
1
SW
6
0.7
SW
6
0.6
SW
6
0.5
SW
6
0.4
SW
6
0.3
SW
6
0.3
SW
6
0.2
WSW
6
1.5
ESE
6
Energy kJ
160
126
73
47
29
29
29
30
26
27
26
25
14
16
132
72
34
27
16
11
5
6
4
150
Swell 2
Height (m)
Direction
Period (s)
0.8
ESE
7
0.6
ESE
7
0.5
ESE
8
0.5
ESE
7
0.3
SSE
7
0.4
SE
7
0.4
SE
7
0.4
SE
7
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
ESE
9
0.1
SE
11
0.1
SE
8
0.2
SSE
8
0.3
SE
10
0.3
SE
8
0.2
SSE
9
0.1
SE
9
0.2
SSE
9
0.1
SW
6
Energy kJ
62
43
32
31
9
12
12
11
5
5
5
5
5
3
15
5
3
6
16
10
8
3
8
1
Swell 3
Height (m)
Direction
Period (s)
0.5
NE
5
0.4
ENE
8
0.4
NE
8
0.3
ENE
8
0.3
NE
8
0.3
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
SE
11
0.1
NE
5
0.1
S
8
0.1
SE
11
0.1
E
11
0.2
E
8
0.1
S
12
0.1
S
12
0.1
SE
12
0.1
NE
8
Energy kJ
11
23
17
12
9
11
5
5
4
4
3
3
3
5
1
1
5
2
5
3
3
6
2
Wind waves
Height (m)
Direction
Period (s)
0.7
SW
7
0.9
SW
6
1.4
SW
5
1.6
SW
6
1.6
SW
6
1.8
SW
6
1.8
SW
6
1.5
SW
6
1.3
SW
6
1.3
SW
6
0.5
NE
5
1.2
ENE
4
1.5
ENE
6
1.5
ENE
6
1.4
ENE
6
1.4
ENE
6
1.4
E
6
1.5
E
6
1.5
E
6
0.7
SSW
4
Energy kJ
46
59
98
163
165
216
236
167
132
132
12
54
136
140
118
131
125
151
156
14
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
1
1
1
1
1
2
1
2
1
1
1
1
2
1
1
1
1
1
1
1
1
Distance (km)
0
33
64
64
64
2799
808
501
244
59
36
14
12
0
47
1081
864
864
1081
1081
204
1500
153
585
Best forecast wave conditions in Chiba
Rating
(10 max)
2
1
1
1
1
1
2
1
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
1
1
1
1
1
1
2
1
2
1
2
1
1
1
1
1
1
1
1
1
Header Global
Rating
(10 max)
6
6
5
5
4
5
5
5
5
8
9
9
9
8
7
6
9
8
7
6
5
5
5
4
  • 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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