Mera surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 am Wednesday 29 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
20.9° 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 10AM is: 1.4m 6s primary swell from a Southwest direction and 0.4m 9s secondary swell from a East direction (forecast issued at 02:00am April 29). The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (29 Apr)5ft (1.6m)6s
Afternoon (29 Apr)4.5ft (1.3m)6s
Evening (29 Apr)2.5ft (0.8m)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 73mm), heaviest during Fri morning. Very mild (max 19°C on Fri morning, min 13°C on Wed night). Mainly near gales.

Wednesday
29
Thursday
30
Friday
1
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)
0
0
0
1
0
2
0
0
0
0
0
1
0
1
0
0
0
0
1
1
2
4
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)
1.7
SW
6
1.8
SW
6
1.7
SW
6
1.6
SW
6
1.1
SW
6
1.3
SW
6
1
SW
6
0.8
SW
6
0.7
SW
6
0.6
SW
6
0.5
SW
6
1.6
E
6
1.4
E
6
1.2
E
6
0.3
SE
8
0.1
SW
6
1.7
ESE
6
1.9
SE
6
2.5
SE
7
3
SE
8
3
SSE
8
3
SSE
9
2.1
SE
9
3
SW
8
Wave Graph
Metric surfscale
Energy kJ
178
209
219
206
98
116
73
51
35
23
18
206
163
112
9
1
223
287
689
1318
1320
1405
718
1287
Wind (km/h)
45
SW
45
SW
35
SW
15
NW
10
WNW
10
E
35
ENE
35
E
35
ENE
30
NE
30
NE
25
ENE
25
ENE
20
ENE
25
ENE
25
E
25
E
35
SE
30
E
20
SW
25
NNW
5
N
35
SW
55
SW
on
on
on
cross
cross
cross-off
cross-off
cross-off
off
off
off
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
on
cross-off
glassy
on
on
High Tide
2:50AM1.26m
3:41PM1.23m
3:12AM1.32m
4:23PM1.29m
3:34AM1.37m
5:02PM1.31m
Low Tide
9:18AM0.29m
9:18PM0.54m
9:49AM0.15m
9:52PM0.60m
10:19AM0.05m
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
cloud
cloud
light rain
light rain
light rain
cloud
cloud
light rain
cloud
light rain
light rain
mod rain
heavy rain
heavy rain
light rain
cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:52
4:52
4:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:23
6:24
2
3
2
1
2
5
7
24
25
2
Temp °C
19
19
19
18
18
18
16
16
14
14
13
13
14
14
15
15
16
17
17
19
15
16
18
17
13
13
14
17
18
18
10
11
8
9
8
8
9
10
10
11
13
12
14
18
11
16
14
7
Swell 1
Height (m)
Direction
Period (s)
0.4
E
9
0.4
E
9
0.4
E
9
1.4
SW
6
1.1
SW
6
1
SW
6
1
SW
6
0.8
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
0.3
SE
8
0.1
SW
6
0.1
SW
6
0.1
E
8
0.1
E
12
0.1
E
12
3
SSE
8
3
SSE
9
2.1
SE
9
1.6
SE
9
Energy kJ
26
27
26
152
98
73
73
51
35
23
18
9
5
5
9
1
1
1
3
3
1320
1405
718
427
Swell 2
Height (m)
Direction
Period (s)
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.4
E
9
0.4
E
9
0.3
E
9
0.1
SE
11
0.1
SE
8
0.1
SE
8
0.1
SE
8
0.2
SSE
8
0.1
S
12
0.1
SE
9
0.2
SSE
10
0.1
SW
6
0.1
SW
6
0.1
E
13
0.1
NE
12
0.1
NE
13
0.1
E
13
0.1
NE
13
0.1
NE
11
0.1
NE
12
Energy kJ
5
5
5
25
25
14
5
3
3
3
7
3
3
9
1
1
3
5
7
3
6
4
6
Swell 3
Height (m)
Direction
Period (s)
0.1
S
14
0.1
S
13
0.1
S
13
0.1
SE
11
0.1
SE
11
0.1
NE
8
0.1
S
13
0.1
SE
11
0.1
SE
11
0.1
S
12
0.1
S
12
0.1
S
12
0.1
S
12
0.1
S
12
0.1
SE
9
0.1
NE
13
0.1
E
11
0.1
NE
14
0.1
NE
10
0.1
NE
8
0.1
NE
12
Energy kJ
4
4
3
5
5
3
3
5
5
3
3
3
3
3
3
7
2
7
4
3
6
Wind waves
Height (m)
Direction
Period (s)
1.7
SW
6
1.8
SW
6
1.7
SW
6
1.6
SW
6
1.3
SW
6
0.7
ENE
9
1.4
ENE
5
1.6
ENE
6
1.6
ENE
6
1.6
E
6
1.6
E
6
1.4
E
6
1.2
E
6
1.2
ESE
6
1.5
ESE
6
1.7
ESE
6
1.9
SE
6
2.5
SE
7
3
SE
8
2.2
SSW
8
1.9
SSW
8
3
SW
8
Energy kJ
178
209
219
206
116
80
103
154
176
200
206
163
112
97
141
223
287
689
1318
597
480
1287
Nearest Offshore or Glassy
Rating
(10 max)
2
1
2
2
1
2
1
1
1
2
1
1
1
1
1
1
1
1
2
2
2
4
2
1
Distance (km)
244
60
36
12
12
0
914
148
1081
1081
1081
1081
14
0
483
578
73
47
483
14
52
0
500
500
Best forecast wave conditions in Chiba
Rating
(10 max)
1
3
2
2
2
1
1
2
4
5
Best forecast wave conditions in Japan
Rating
(10 max)
2
1
3
2
2
2
1
1
1
1
2
3
1
3
3
4
4
5
2
1
Header Global
Rating
(10 max)
5
5
8
9
9
9
8
8
7
7
6
5
5
5
5
4
6
6
6
6
7
7
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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