Mera surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 pm Saturday 30 May 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
22.4° C
(Which is slightly warmer than usual)

How big are the waves at Mera today (31 May):

  • Morning surf: Morning surf (31 May, local time) - 3ft (0.9m), 10s period with E swell.
  • Afternoon surf: Afternoon surf (31 May, local time) - 2.5ft (0.8m), 10s period with E swell.
  • Evening surf: Evening surf (31 May, local time) - 2.5ft (0.8m), 12s period with S swell.

The current surf forecast for Mera at 3AM is: 0.9m 10s primary swell from a East direction and 0.4m 7s secondary swell from a Southwest direction, 0.5m 6s secondary swell from a South-southwest direction (forecast issued at 08:00pm May 30). The wind direction is predicted to be onshore.

Time (JST) & DateWave HeightWave Period
Morning (31 May)3ft (0.9m)10s
Afternoon (31 May)2.5ft (0.8m)10s
Evening (31 May)2.5ft (0.8m)12s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 24°C on Sun afternoon, min 20°C on Sun night). Mainly fresh winds.

Sat
30
Sunday
31
Monday
1
Tuesday
2
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
0
0
0
0
1
0
2
0
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
Swell
Height Map
Height MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.9
E
11
0.9
E
10
0.9
E
10
0.9
E
10
0.9
E
10
0.9
E
10
0.8
ESE
10
0.8
E
10
0.7
S
12
0.8
S
12
1.5
SW
6
0.8
S
11
0.8
S
11
0.7
SSW
16
0.8
SSW
16
1.2
SSW
15
1
SSW
14
1.2
SSW
14
1.2
SSW
13
1.2
SSW
13
1.2
SSW
13
1.6
SSW
15
1.7
SSW
14
1.7
SSW
14
Wave Graph
Metric surfscale
Energy kJ
181
174
171
171
167
161
136
128
136
171
160
154
151
229
288
588
431
529
468
491
426
1125
1114
1068
Wind (km/h)
20
S
20
SW
15
SW
15
SW
5
W
10
NNW
10
WNW
5
W
15
SSW
15
WSW
30
SW
30
WSW
15
W
10
WSW
20
SW
25
SW
20
SSW
20
SSW
25
SW
20
SSW
20
SSW
15
S
20
S
20
S
cross-on
on
on
on
cross-on
cross-off
cross-on
glassy
on
on
on
on
cross-on
cross-on
on
on
on
on
on
on
on
cross-on
cross-on
cross-on
High Tide
5:01PM1.30m
3:17AM1.39m
5:38PM1.32m
3:49AM1.40m
6:14PM1.32m
4:22AM1.39m
Low Tide
9:58PM0.86m
10:29AM0.01m
10:36PM0.87m
11:02AM-0.00m
11:12PM0.87m
11:36AM0.00m
clear
cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:28
4:28
4:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:46
6:46
6:47
6:49
Temp °C
23
22
21
21
21
21
22
24
23
22
20
20
20
21
21
21
21
21
21
21
21
21
21
22
22
21
20
20
22
21
21
24
23
21
17
17
20
22
19
19
20
20
19
20
20
20
19
21
Swell 1
Height (m)
Direction
Period (s)
0.9
E
11
0.9
E
10
0.9
E
10
0.9
E
10
0.9
E
10
0.9
E
10
0.8
ESE
10
0.8
E
10
0.8
E
10
0.8
S
12
0.8
S
11
0.8
S
11
0.8
S
11
0.7
S
11
0.7
S
11
1.2
SSW
15
1
SSW
14
1.2
SSW
14
1.2
SSW
13
1.2
SSW
13
1.2
SSW
13
1.6
SSW
15
1.7
SSW
14
1.7
SSW
14
Energy kJ
181
174
171
171
167
161
136
128
127
171
160
154
151
114
108
588
431
529
468
491
426
1125
1114
1068
Swell 2
Height (m)
Direction
Period (s)
0.7
SE
6
0.6
SE
6
0.6
SE
6
0.4
SW
7
0.3
SSE
6
0.4
SW
6
0.5
S
13
0.6
S
12
0.7
S
12
0.7
E
10
0.7
E
10
0.7
E
10
0.7
E
10
0.7
E
10
0.8
SSW
16
0.6
E
10
0.6
E
10
0.6
E
10
0.6
E
10
0.6
E
10
0.9
SW
16
0.6
E
10
0.6
E
9
0.6
E
9
Energy kJ
36
23
20
11
6
14
87
106
136
96
94
98
94
92
288
66
64
66
65
65
353
65
62
62
Swell 3
Height (m)
Direction
Period (s)
0.4
SW
7
0.4
SW
7
0.4
SW
7
0.3
ESE
5
0.4
SW
7
0.3
SSE
6
0.4
SW
6
0.4
SE
6
0.3
SSW
14
0.3
SE
12
0.3
SE
12
0.1
SW
18
0.5
SSE
6
0.7
SSW
16
0.7
E
10
0.3
SE
11
0.3
SE
11
0.3
SE
11
0.5
SW
17
0.6
SW
16
0.6
E
10
0.3
SE
12
0.3
SE
11
0.3
SE
12
Energy kJ
16
16
16
5
11
6
10
8
40
23
22
13
17
229
92
20
19
20
135
219
65
21
20
21
Wind waves
Height (m)
Direction
Period (s)
0.3
SW
2
0.4
SW
3
0.5
SSW
6
0.4
SW
3
0.4
WSW
6
0.6
SW
3
1.6
SW
5
1.5
SW
6
1.3
SW
6
0.9
SW
5
0.7
SW
5
0.6
SW
4
0.6
WSW
4
0.6
SW
3
0.5
SW
3
Energy kJ
1
2
19
2
16
8
138
141
101
49
24
16
10
7
5
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
1
1
1
2
2
1
2
2
1
2
2
2
2
3
1
1
1
2
2
4
2
Distance (km)
64
64
36
64
12
0
12
0
36
12
36
59
12
12
64
70
88
69
69
61
73
64
153
64
Best forecast wave conditions in Chiba
Rating
(10 max)
1
2
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
1
3
1
2
2
2
3
3
3
2
3
3
3
4
3
4
4
4
3
4
4
4
4
4
Header Global
Rating
(10 max)
5
5
6
8
7
7
7
7
7
6
5
5
5
5
5
5
5
4
5
5
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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