Mera surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 am Sunday 31 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 4PM is: 0.8m 10s primary swell from a East direction and 0.6m 12s secondary swell from a South direction, 0.5m 6s secondary swell from a South direction (forecast issued at 08:00am May 31). 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

Moderate rain (total 11mm), heaviest on Tue night. Warm (max 23°C on Sun morning, min 19°C on Sun night). Mainly strong winds.

Sunday
31
Monday
1
Tuesday
2
Wed
3
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
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.9
E
10
0.9
E
10
0.8
ESE
10
0.8
E
10
1.4
SSW
12
0.8
S
12
0.8
S
11
0.8
S
11
0.8
S
11
0.7
SSW
16
0.8
SSW
16
1
SSW
15
1
SSW
14
1.3
SSW
14
1.2
SSW
13
1.1
SSW
13
1.1
SSW
13
1.4
SSW
14
1.6
SSW
14
1.4
SW
13
1.4
SW
13
1.3
SSW
13
1.3
SSW
13
1
SW
16
Wave Graph
Metric surfscale
Energy kJ
167
161
136
128
548
171
160
154
151
229
288
468
425
597
475
384
373
752
961
732
711
563
538
468
Wind (km/h)
10
WNW
5
NW
10
NW
15
SSW
40
SW
40
SW
30
SW
20
SW
20
SW
15
SW
20
SSW
25
SSW
20
SSW
20
SSW
15
SSW
15
S
15
SSE
20
SSE
20
SSE
20
S
20
S
20
S
20
S
20
SE
cross-on
glassy
cross
on
on
on
on
on
on
on
on
cross-on
cross-on
on
on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
High Tide
3:17AM1.39m
5:38PM1.32m
3:49AM1.40m
6:14PM1.32m
4:22AM1.39m
6:50PM1.31m
Low Tide
10:29AM0.01m
10:36PM0.87m
11:02AM-0.00m
11:12PM0.87m
11:36AM0.00m
11:48PM0.88m
cloud
cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:28
4:28
4:28
4:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:46
6:47
6:49
6:49
1
1
Temp °C
21
21
23
23
22
20
19
19
19
20
21
21
21
21
21
21
21
21
21
22
22
22
22
20
21
22
23
22
17
14
15
17
18
20
20
19
20
19
20
20
21
20
20
21
21
21
21
19
Swell 1
Height (m)
Direction
Period (s)
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
0.8
S
11
1
SSW
15
1
SSW
14
1.3
SSW
14
1.2
SSW
13
1.1
SSW
13
1.1
SSW
13
1.4
SSW
14
1.6
SSW
14
1.4
SW
13
1.4
SW
13
1.3
SSW
13
1.3
SSW
13
1.1
SW
12
Energy kJ
167
161
136
128
125
171
160
154
151
114
141
468
425
597
475
384
373
752
961
732
711
563
538
330
Swell 2
Height (m)
Direction
Period (s)
0.4
SW
7
0.5
SW
6
0.5
S
13
0.6
S
12
0.3
SE
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
0.7
E
10
0.6
E
10
0.7
E
10
0.6
E
10
0.8
SW
16
0.9
SW
15
0.6
E
10
0.6
E
10
0.6
E
9
0.6
E
9
0.6
E
9
0.6
SW
17
1
SW
16
Energy kJ
11
20
87
106
23
96
94
100
94
92
288
90
64
89
65
299
340
65
65
62
62
61
222
468
Swell 3
Height (m)
Direction
Period (s)
0.3
SSE
6
0.3
SSE
6
0.4
SW
6
0.3
SSW
14
0.3
SE
12
0.3
SE
12
0.1
SW
18
0.5
SSE
5
0.7
SSW
16
0.7
E
10
0.3
SE
11
0.4
SW
17
0.3
SE
11
0.6
SW
16
0.6
E
10
0.6
E
10
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.6
SW
16
0.6
E
9
0.6
E
9
Energy kJ
6
6
10
41
23
22
13
15
229
92
20
76
20
171
65
65
21
21
21
21
171
60
60
Wind waves
Height (m)
Direction
Period (s)
0.4
WSW
3
0.4
SW
4
0.5
S
6
1.4
SSW
12
1.6
SSW
6
1.3
SSW
6
1.2
SSW
6
0.8
SW
5
0.6
SW
5
0.5
SW
5
0.4
SW
5
0.4
SW
5
0.4
SSE
3
0.4
SSE
4
0.6
SSE
4
0.6
SSE
4
0.6
SSE
4
0.8
SSE
4
1
SSE
5
1.2
SSE
6
1.2
SSE
6
1.2
SSE
6
1.4
SE
6
Energy kJ
5
3
18
548
151
115
90
35
22
13
8
6
5
6
12
12
12
24
44
81
93
90
137
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
1
2
2
1
2
1
2
2
2
3
2
1
2
2
2
2
2
2
1
1
3
Distance (km)
12
0
12
36
2785
529
69
60
61
36
64
64
88
64
69
64
47
47
47
64
64
61
61
36
Best forecast wave conditions in Chiba
Rating
(10 max)
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
3
2
3
3
4
4
3
4
4
4
4
4
4
4
2
4
4
3
3
3
Header Global
Rating
(10 max)
7
7
7
7
7
6
5
5
5
5
5
5
5
4
5
9
5
5
5
8
5
6
4
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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