Mera surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 am 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
20.8° C
(Which is 1.8°C warmer than normal for this time of year)

How big are the waves at Mera today?

The current surf forecast for Mera at 4PM is: 1.3m 7s primary swell from a South-southwest direction and 1.0m 7s secondary swell from a East-southeast direction (forecast issued at 08:00am April 27). An open ocean swell of 0.3m 4s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (27 Apr)5.5ft (1.7m)6s
Afternoon (27 Apr)4ft (1.2m)7s
Evening (27 Apr)4.5ft (1.3m)7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 15mm), heaviest on Mon morning. Warm (max 20°C on Wed morning, min 13°C on Wed night). Winds increasing (light winds from the E on Mon night, strong winds from the SW by Tue night).

Monday
27
Tuesday
28
Wednesday
29
Thu
30
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
12 AM
3 AM
Rating
(10 max)
0
0
0
2
0
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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>
<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)
1.5
SE
6
1.7
SSE
6
1.7
SSE
7
1.2
SSW
7
1.3
SSW
7
1.3
SSW
7
1.2
SW
8
1.1
SW
7
0.9
SSW
7
0.6
SW
7
0.9
SSW
7
1.1
SSW
4
1.6
SW
6
1.7
SW
6
1.8
SW
6
1.9
SW
6
2.1
SW
6
1.8
SW
6
1.5
SW
6
1.7
SW
6
1.6
SW
6
1.4
WSW
6
1
SW
6
0.7
SW
6
Wave Graph
Metric surfscale
Energy kJ
170
222
262
147
167
169
164
126
88
37
75
43
157
177
202
244
328
244
161
198
172
131
65
34
Wind (km/h)
25
ESE
20
SW
20
NW
20
NNE
30
NNE
15
NE
10
E
10
SSE
20
S
25
S
20
SSW
40
SW
45
SW
45
SW
45
SW
45
SW
40
SW
35
WSW
25
WSW
35
SW
15
W
30
ENE
30
NE
35
NE
cross-off
on
cross
off
cross-off
off
cross-off
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
on
on
on
cross-on
off
off
off
High Tide
1:50PM1.07m
2:28AM1.20m
2:52PM1.16m
2:50AM1.26m
3:41PM1.23m
Low Tide
8:11AM0.64m
7:57PM0.43m
8:46AM0.45m
8:41PM0.49m
9:18AM0.29m
9:18PM0.54m
heavy rain
rain showers
cloud
cloud
cloud
rain showers
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:54
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
12
12
1
1
Temp °C
18
18
16
17
16
16
16
16
18
19
19
19
18
19
19
19
19
19
20
20
19
16
15
14
16
17
13
14
10
13
15
14
15
16
17
13
11
13
13
13
13
14
15
14
17
11
10
8
Swell 1
Height (m)
Direction
Period (s)
0.2
ENE
13
1.7
SSE
6
1.7
SSE
7
1.2
SSW
7
1.3
SSW
7
1.3
SSW
7
1.2
SW
8
1.1
SW
7
0.9
SSW
7
0.6
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
E
9
0.3
ESE
9
1.2
SW
6
1
SW
6
0.7
SW
6
Energy kJ
17
222
262
147
167
169
164
126
88
37
29
29
29
30
25
27
26
26
14
14
15
96
65
34
Swell 2
Height (m)
Direction
Period (s)
0.2
ENE
9
0.2
ENE
13
0.2
ENE
12
1.1
SE
7
0.9
ESE
7
0.8
ESE
7
0.8
ESE
7
0.6
ESE
8
0.6
ESE
7
0.5
ESE
8
0.2
ENE
8
0.3
SE
7
0.4
SSE
7
0.4
SSE
7
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
NE
8
0.1
SE
11
0.1
NE
9
0.3
E
9
0.2
SSE
7
0.2
SSE
8
Energy kJ
7
16
15
116
84
70
62
44
43
32
7
7
18
17
5
5
5
5
3
5
3
13
4
7
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
12
0.2
ENE
8
0.1
NE
9
0.2
ENE
8
0.2
ENE
8
0.2
ENE
8
0.2
NNE
3
0.2
ENE
8
0.2
ENE
8
0.1
NE
8
0.1
SE
7
0.2
ENE
8
0.1
NE
8
0.1
SE
11
0.1
NE
8
0.1
S
13
0.1
S
13
0.1
S
13
0.1
SE
11
0.1
NE
8
0.1
SE
11
0.1
NE
5
0.1
SE
8
0.1
SE
11
Energy kJ
6
7
3
6
6
6
1
6
6
3
2
6
2
5
2
4
3
3
5
3
5
1
3
5
Wind waves
Height (m)
Direction
Period (s)
1.5
SE
6
0.1
W
8
0.4
NW
3
0.3
NNW
4
0.5
N
3
0.3
NNE
3
0.4
SSE
3
0.6
S
4
0.9
SSW
7
1.1
SSW
4
1.6
SW
6
1.7
SW
6
1.8
SW
6
1.9
SW
6
2.1
SW
6
1.8
SW
6
1.5
SW
6
1.7
SW
6
1.6
SW
6
1.4
WSW
6
1.1
ENE
5
1.4
ENE
6
Energy kJ
170
1
2
2
5
2
3
9
75
43
157
177
202
244
328
244
161
198
172
131
50
128
Nearest Offshore or Glassy
Rating
(10 max)
1
2
3
2
1
2
2
1
1
1
1
1
1
1
1
1
2
2
1
2
1
1
1
1
Distance (km)
47
51
12
0
39
0
0
64
64
64
64
811
808
526
244
73
55
36
39
33
12
2351
1465
153
Best forecast wave conditions in Chiba
Rating
(10 max)
2
2
3
2
2
2
2
1
1
1
1
2
2
1
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
3
2
1
2
2
1
1
1
1
1
1
1
1
2
2
2
1
2
1
1
1
Header Global
Rating
(10 max)
9
9
8
7
6
6
6
6
5
5
5
5
5
5
5
5
8
9
9
8
7
7
9
7
  • 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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