Mera surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 pm Monday 25 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
20.6° C
(Which is slightly cooler than normal)

How big are the waves at Mera today?

The current surf forecast for Mera at 4AM is: 1.3m 8s primary swell from a East-southeast direction (forecast issued at 08:00pm May 25). An open ocean swell of 1.0m 11s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (26 May)4ft (1.2m)8s
Afternoon (26 May)4ft (1.2m)8s
Evening (26 May)3.5ft (1.1m)8s

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 23°C on Wed afternoon, min 20°C on Mon night). Winds increasing (light winds from the ESE on Wed night, fresh winds from the S by Thu afternoon).

Mon
25
Tuesday
26
Wednesday
27
Thursday
28
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)
1
2
2
1
2
1
1
2
1
1
1
2
2
2
2
2
1
1
0
0
0
0
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)
1.4
ESE
8
1.3
ESE
8
1.3
ESE
8
1.2
ESE
8
1.3
ESE
8
1.2
ESE
8
1.2
ESE
8
1.2
ESE
8
1.2
ESE
8
1.1
ESE
8
1.2
ESE
8
1.4
ESE
7
1.4
ESE
7
1.4
ESE
8
1.4
ESE
8
1.4
ESE
8
1.3
ESE
8
1.3
ESE
8
1.2
ESE
8
1.1
ESE
8
1.2
ESE
8
1
ESE
8
1
E
8
1
E
8
Wave Graph
Metric surfscale
Energy kJ
213
204
178
158
187
174
171
188
179
149
170
208
208
214
214
220
191
181
151
131
181
144
147
144
Wind (km/h)
15
E
15
ENE
10
NE
15
ENE
15
ENE
10
NE
10
NE
15
ENE
20
ENE
15
E
10
E
15
NE
15
NNE
15
NNE
10
NNE
10
ESE
10
SE
5
ESE
10
SSW
10
SSW
15
SSW
20
SSW
30
SSW
30
SSW
cross-off
off
off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross
cross-off
on
on
cross-on
cross-on
on
on
High Tide
00:34AM1.19m
1:37PM1.05m
1:08AM1.24m
2:46PM1.13m
1:40AM1.29m
Low Tide
5:55PM0.58m
7:23AM0.53m
6:56PM0.68m
8:08AM0.37m
7:50PM0.76m
8:46AM0.24m
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
part cloud
cloud
clear
part cloud
cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
clear
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:31
4:30
4:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:43
6:44
6:45
6:45
Temp °C
21
20
20
20
20
21
22
22
22
21
21
21
21
21
22
23
23
23
23
22
22
22
22
22
21
20
21
20
19
21
22
22
21
22
22
22
22
22
23
24
25
25
25
23
23
21
20
20
Swell 1
Height (m)
Direction
Period (s)
1.4
ESE
8
1.3
ESE
8
1.3
ESE
8
1.2
ESE
8
1.3
ESE
8
1.2
ESE
8
1.2
ESE
8
1.2
ESE
8
0.7
ENE
10
1.1
ESE
8
1.2
ESE
8
1.4
ESE
7
1.4
ESE
7
1.4
ESE
8
1.4
ESE
8
1.4
ESE
8
1.3
ESE
8
1.3
ESE
8
1.2
ESE
8
1.1
ESE
8
1.2
ESE
8
1
ESE
8
1
E
8
1
E
8
Energy kJ
213
204
178
158
187
174
171
188
104
149
170
208
208
214
214
220
191
181
151
131
181
144
147
144
Swell 2
Height (m)
Direction
Period (s)
1
ENE
11
1
ENE
11
0.9
ENE
11
1
ENE
11
0.9
ENE
11
0.9
ENE
11
0.9
ENE
10
0.9
ENE
10
0.2
ESE
15
0.9
ENE
10
0.7
ENE
10
0.6
ENE
10
0.6
ENE
10
0.5
ENE
9
0.5
ENE
10
0.4
ENE
10
0.4
ENE
10
0.4
ENE
11
0.4
ENE
10
0.4
NE
10
0.4
NE
10
0.4
NE
10
0.3
ENE
10
0.3
ENE
10
Energy kJ
273
273
217
254
206
198
191
146
21
143
102
75
74
48
56
42
40
44
41
26
27
27
21
21
Swell 3
Height (m)
Direction
Period (s)
0.4
SW
8
0.5
S
7
0.5
S
7
0.5
S
7
0.4
S
7
0.3
S
7
0.2
ESE
15
0.2
ESE
15
0.1
SE
11
0.2
S
6
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
13
0.2
ESE
13
0.2
ESE
13
0.2
ESE
13
0.2
ESE
13
0.3
ESE
13
Energy kJ
17
27
25
23
15
8
22
22
4
3
21
20
20
19
19
19
19
18
18
17
17
17
17
32
Wind waves
Height (m)
Direction
Period (s)
1.2
ENE
10
1.2
ESE
8
0.7
SW
4
0.8
SSW
4
1.1
S
5
Energy kJ
286
179
13
21
55
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
1
2
1
1
2
1
1
1
2
2
2
2
2
1
1
1
2
2
2
1
1
Distance (km)
14
0
0
0
0
0
0
0
14
0
0
0
0
0
0
0
47
0
36
64
64
64
88
88
Best forecast wave conditions in Chiba
Rating
(10 max)
1
2
2
1
2
1
1
2
1
1
1
2
2
2
2
2
2
2
2
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
2
2
1
1
2
1
1
1
2
2
2
2
2
1
2
2
2
2
3
3
3
Header Global
Rating
(10 max)
5
4
4
4
4
4
5
5
9
9
9
5
6
7
7
7
8
9
9
7
6
9
7
9
  • 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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