Mera surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 pm Saturday 23 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
21.3° C
(Which is normal for this time of year)

How big are the waves at Mera today?

The current surf forecast for Mera at 1AM is: 0.9m 6s primary swell from a Southeast direction (forecast issued at 08:00pm May 23). An open ocean swell of 1.6m 10s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (24 May)6ft (1.9m)9s
Afternoon (24 May)6ft (1.9m)7s
Evening (24 May)4.5ft (1.3m)9s

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 2mm), mostly falling on Sun morning. Warm (max 22°C on Mon afternoon, min 18°C on Sat night). Wind will be generally light.

Sat
23
Sunday
24
Monday
25
Tuesday
26
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)
2
2
0
0
2
4
1
1
1
2
2
2
2
2
2
1
1
4
2
2
2
2
2
2
Swell
Height Map
Height MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
2.1
E
10
2
E
10
0.9
SE
6
1
SE
6
1.4
E
10
1.9
E
9
1.9
ESE
7
1.9
ESE
7
1.3
E
9
1.3
E
9
1.4
SE
8
1.5
SE
8
1.6
SE
8
1.5
ESE
8
1.4
ESE
8
1.6
ESE
8
1.5
ESE
8
2.1
E
9
1.4
ESE
8
1.2
ESE
8
1.3
ESE
8
1.2
ESE
8
1.2
ESE
8
1.2
ESE
8
Wave Graph
Metric surfscale
Energy kJ
796
725
54
73
361
641
316
336
287
269
227
264
298
285
242
322
291
716
262
197
221
190
190
185
Wind (km/h)
30
ENE
25
ENE
20
ENE
15
ENE
15
ENE
15
ENE
20
E
20
E
20
E
15
E
20
ENE
20
NE
20
NE
20
NE
15
ENE
20
ENE
20
E
10
E
10
NE
10
NE
15
ENE
15
ENE
15
E
15
E
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
High Tide
11:11PM1.16m
9:52AM1.03m
11:56PM1.16m
12:00PM1.00m
00:34AM1.19m
1:37PM1.05m
Low Tide
3:43PM0.30m
4:51AM0.84m
4:48PM0.45m
6:23AM0.70m
5:55PM0.58m
7:23AM0.53m
cloud
part cloud
cloud
part cloud
cloud
light rain
rain showers
part cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:31
4:31
4:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:42
6:43
6:43
6:44
1
1
Temp °C
17
18
18
18
18
18
19
20
20
20
20
19
19
21
21
22
21
21
20
20
20
21
21
21
12
14
15
16
17
16
17
18
19
19
18
17
17
20
20
21
20
22
21
20
20
21
20
20
Swell 1
Height (m)
Direction
Period (s)
0.1
SW
7
0.1
SW
7
0.9
SE
6
1.4
ENE
10
1.4
E
10
1.4
E
10
0.1
NW
4
0.3
ESE
10
1.3
SE
7
1.5
SE
7
1.4
SE
8
1.5
SE
8
1.6
SE
8
1.5
ESE
8
1.4
ESE
8
1
ENE
11
1
ENE
11
1.4
ESE
8
1.4
ESE
8
1.2
ESE
8
1.3
ESE
8
1.2
ESE
8
0.9
ENE
11
0.9
ENE
11
Energy kJ
2
2
54
370
361
361
1
19
179
237
227
264
298
285
242
259
268
262
262
197
221
190
202
161
Swell 2
Height (m)
Direction
Period (s)
0.1
SE
12
1
SE
6
1.1
SE
6
0.1
E
16
0.1
E
16
0.1
E
16
1.2
ENE
10
1.2
ENE
10
0.4
SSW
8
0.5
S
8
1
ENE
11
1
ENE
11
1.1
ENE
11
0.9
ENE
11
0.9
ENE
11
0.3
S
7
0.3
S
6
Energy kJ
6
73
91
5
5
5
279
285
22
30
263
259
270
206
206
8
7
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
7
0.1
SW
7
0.1
NW
4
0.1
SW
10
0.2
SSW
9
0.2
SSW
9
0.1
E
16
0.5
S
8
0.4
S
7
0.4
S
7
0.4
S
7
0.4
S
7
0.2
ESE
15
0.2
ESE
15
Energy kJ
2
2
1
4
8
8
5
29
17
15
15
15
22
22
Wind waves
Height (m)
Direction
Period (s)
2.1
E
10
2
E
10
1.6
E
10
1
SE
6
1.9
E
9
1.9
ESE
7
1.9
ESE
7
1.3
E
9
1.3
E
9
1.3
ENE
9
1.3
ENE
9
1.2
ENE
10
1.4
ENE
10
1.5
ENE
10
1.6
ESE
8
1.5
ESE
8
2.1
E
9
1.3
ENE
11
1.2
ESE
8
1.2
ESE
8
Energy kJ
796
725
479
73
641
316
336
287
269
270
289
263
343
469
322
291
716
379
190
185
Nearest Offshore or Glassy
Rating
(10 max)
4
2
3
1
2
4
2
2
2
2
2
2
2
2
2
2
2
4
2
2
2
2
2
2
Distance (km)
563
14
563
14
0
0
14
14
14
14
0
0
0
0
0
14
47
0
0
0
0
0
0
0
Best forecast wave conditions in Chiba
Rating
(10 max)
2
1
2
4
2
2
2
2
2
2
3
2
2
2
3
4
2
3
3
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
4
4
3
3
2
4
2
3
3
4
4
3
3
2
2
2
2
4
2
3
3
2
2
2
Header Global
Rating
(10 max)
7
8
7
6
5
5
5
5
5
5
5
5
5
5
4
5
5
5
4
5
4
5
5
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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