Mera surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 am 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
20.7° C
(Which is slightly cooler than normal)

How big are the waves at Mera today?

The current surf forecast for Mera at 2PM is: 1.4m 8s primary swell from a East-southeast direction and 0.3m 8s secondary swell from a South-southwest direction (forecast issued at 08:00am 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 (25 May)4.5ft (1.3m)8s
Afternoon (25 May)4.5ft (1.4m)8s
Evening (25 May)4.5ft (1.3m)8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 4mm), mostly falling on Wed morning. Warm (max 23°C on Wed afternoon, min 20°C on Mon night). Wind will be generally light.

Monday
25
Tuesday
26
Wednesday
27
Thu
28
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)
2
2
2
1
1
2
2
1
2
1
2
1
0
2
1
1
1
1
1
1
1
1
0
0
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)
1.5
SE
8
1.3
SE
8
1.4
SE
8
1.4
ESE
8
1.4
ESE
8
1.3
ESE
8
1.3
ESE
8
1.3
SE
8
1.3
ESE
8
1.3
ESE
8
1.3
ESE
8
1.2
ESE
8
1.2
ESE
8
1.2
ESE
8
1.1
ESE
8
1.1
ESE
8
1.1
ESE
8
1.2
ESE
7
1.2
ESE
7
1.3
ESE
7
1.4
ESE
7
1.4
ESE
7
1.3
ESE
7
1.3
ESE
7
Wave Graph
Metric surfscale
Energy kJ
248
200
229
213
213
204
204
181
187
183
192
179
174
179
149
145
138
153
153
181
208
203
178
160
Wind (km/h)
20
NE
15
NE
10
ENE
15
E
15
ENE
15
E
10
ENE
10
ENE
15
ENE
10
NE
10
NE
10
ENE
15
E
15
ENE
15
NE
10
NE
15
NE
10
E
5
E
10
SE
10
SSE
5
S
10
S
15
SSW
off
off
off
cross-off
cross-off
cross-off
off
off
off
off
off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross
cross
cross-on
cross-on
cross-on
High Tide
12:00PM1.00m
00:34AM1.19m
1:37PM1.05m
1:08AM1.24m
2:46PM1.13m
1:40AM1.29m
Low Tide
6:23AM0.70m
5:55PM0.58m
7:23AM0.53m
6:56PM0.68m
8:08AM0.37m
7:50PM0.76m
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
cloud
part cloud
part cloud
cloud
part cloud
clear
light rain
rain showers
rain showers
rain showers
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:31
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
1
1
1
1
Temp °C
19
21
21
21
21
20
20
20
20
22
22
22
21
21
21
21
21
22
22
22
23
23
23
22
18
20
21
20
21
20
21
20
19
22
22
22
21
21
21
22
22
24
25
24
25
25
24
23
Swell 1
Height (m)
Direction
Period (s)
1.5
SE
8
1.3
SE
8
1.4
SE
8
1
ENE
11
1.4
ESE
8
1.3
ESE
8
1.3
ESE
8
1.3
SE
8
1.3
ESE
8
1.3
ESE
8
1.3
ESE
8
1.2
ESE
8
1.2
ESE
8
1.2
ESE
8
1.1
ESE
8
1.1
ESE
8
1.1
ESE
8
1.2
ESE
7
1.2
ESE
7
1.3
ESE
7
1.4
ESE
7
1.4
ESE
7
1.3
ESE
7
1.3
ESE
7
Energy kJ
248
200
229
263
213
204
204
181
187
183
192
179
174
179
149
145
138
153
153
181
208
203
178
160
Swell 2
Height (m)
Direction
Period (s)
1
ENE
10
1.1
ENE
10
1
ENE
11
0.3
SSW
8
1
ENE
11
1
ENE
11
0.9
ENE
11
0.9
ENE
11
0.9
ENE
11
0.9
ENE
11
0.9
ENE
10
0.9
ENE
10
0.7
ENE
10
0.7
ENE
10
0.7
ENE
10
0.6
ENE
10
0.6
ENE
10
0.5
ENE
10
0.5
ENE
10
0.4
ENE
11
0.4
ENE
10
0.4
ENE
10
0.4
ENE
10
0.4
ENE
10
Energy kJ
193
265
249
14
273
273
217
210
206
198
155
146
106
104
104
77
75
56
54
44
40
43
42
40
Swell 3
Height (m)
Direction
Period (s)
0.2
ESE
11
0.2
ESE
11
0.2
SSW
9
0.3
SSW
9
0.4
SW
8
0.4
S
7
0.5
S
7
0.1
SE
15
0.4
S
7
0.3
S
7
0.2
ESE
15
0.2
S
6
0.2
ESE
15
0.2
ESE
15
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
Energy kJ
12
12
8
15
17
15
24
9
15
8
22
3
21
21
21
20
20
19
19
19
19
18
18
17
Wind waves
Height (m)
Direction
Period (s)
1.4
ENE
9
1.4
ENE
10
1.4
ESE
8
Energy kJ
321
341
213
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
1
1
2
2
1
2
1
2
1
1
2
1
1
1
1
1
1
1
2
2
2
Distance (km)
0
0
0
14
14
0
0
0
0
0
0
0
70
0
0
0
0
0
0
47
47
12
64
64
Best forecast wave conditions in Chiba
Rating
(10 max)
2
2
2
1
1
2
2
1
2
1
2
1
2
1
2
2
1
1
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
4
2
3
1
2
2
2
2
2
1
2
1
1
2
1
2
2
2
1
1
1
2
2
2
Header Global
Rating
(10 max)
5
5
4
4
4
4
4
4
4
4
5
8
9
9
9
9
5
6
6
7
7
7
6
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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