Mera surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 pm Thursday 28 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
21.5° C
(Which is normal for this time of year)

How big are the waves at Mera today (28 May):

  • Afternoon surf: Afternoon surf (28 May, local time) - 3.5ft (1.1m), 9s period with ESE swell.
  • Evening surf: Evening surf (28 May, local time) - 5ft (1.5m), 7s period with SSW swell.

The current surf forecast for Mera at 9PM is: 1.5m 7s primary swell from a South-southwest direction and 1.1m 9s secondary swell from a East-southeast direction (forecast issued at 02:00pm May 28). An open ocean swell of 0.3m 10s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (JST) & DateWave HeightWave Period
Morning (28 May)--
Afternoon (28 May)3.5ft (1.1m)9s
Evening (28 May)5ft (1.5m)7s

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 Fri morning, min 20°C on Fri night). Winds decreasing (strong winds from the WSW on Thu night, calm by Sat morning).

Thu
28
Friday
29
Saturday
30
Sun
31
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
6 AM
9 AM
Rating
(10 max)
0
0
0
0
0
0
0
2
0
0
0
0
0
1
1
2
2
1
0
0
0
0
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)
1.1
ESE
8
1.1
ESE
9
1.1
ESE
9
1.5
SSW
7
1.8
SSW
7
2.3
SW
7
2.2
SW
7
1.8
SW
7
1.6
SW
7
1.5
SW
7
1.1
E
9
1.4
E
9
1
SW
7
0.8
E
11
0.7
E
11
0.9
ESE
11
0.9
ESE
11
0.9
ESE
11
0.9
ESE
11
1
E
10
0.9
ESE
10
0.9
ESE
10
0.9
ESE
10
0.8
E
10
Wave Graph
Metric surfscale
Energy kJ
177
189
193
195
324
480
475
336
258
229
211
341
93
146
114
194
191
191
187
214
177
173
184
125
Wind (km/h)
20
SSE
25
S
25
SSW
30
SSW
30
SW
40
WSW
25
WSW
10
WSW
10
W
25
ENE
30
E
30
E
30
E
25
ENE
15
NE
10
N
5
W
10
S
15
SSW
15
SSW
15
SW
10
SW
10
SSW
15
SW
cross
cross-on
on
on
on
on
on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
glassy
cross-on
cross-on
on
on
on
on
on
High Tide
3:39PM1.20m
2:12AM1.34m
4:22PM1.26m
2:44AM1.37m
5:01PM1.30m
3:17AM1.39m
Low Tide
8:37PM0.81m
9:22AM0.13m
9:19PM0.84m
9:56AM0.06m
9:58PM0.86m
cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
cloud
part cloud
clear
clear
clear
cloud
cloud
cloud
part 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>
6:45
6:45
6:46
6:46
Temp °C
22
22
22
22
22
22
22
23
24
21
22
21
21
21
20
21
22
23
22
22
21
21
21
22
22
22
22
21
20
18
21
25
26
19
19
18
17
17
18
21
22
23
21
21
20
21
21
21
Swell 1
Height (m)
Direction
Period (s)
1.1
ESE
8
1.1
ESE
9
1.1
ESE
9
1.1
ESE
9
1.1
E
10
1
E
10
0.9
E
10
0.9
E
10
0.9
ESE
10
1.5
SW
7
1.4
SW
7
1.1
SW
7
1
SW
7
0.8
E
11
0.7
E
11
0.9
ENE
6
0.9
ESE
11
0.9
ESE
11
0.9
ESE
11
1
E
10
0.9
ESE
10
0.9
ESE
10
0.9
ESE
10
0.8
E
10
Energy kJ
177
189
193
189
226
188
148
148
150
229
205
115
93
146
114
52
191
191
187
214
177
173
184
125
Swell 2
Height (m)
Direction
Period (s)
0.4
NE
10
0.3
ENE
10
0.3
ENE
10
0.3
ENE
10
0.4
ENE
10
0.4
ENE
11
0.2
ESE
12
0.2
ENE
11
0.2
ENE
11
0.9
ESE
9
0.2
ENE
11
0.6
S
7
0.1
S
14
0.7
SW
7
0.6
SW
7
0.9
ESE
11
0.7
E
5
0.5
E
5
0.5
SSE
6
0.6
SSE
6
0.4
ESE
5
0.4
S
6
0.4
E
5
0.3
S
6
Energy kJ
27
22
21
21
41
47
15
13
12
147
12
32
4
47
30
194
25
12
22
25
10
11
9
6
Swell 3
Height (m)
Direction
Period (s)
0.2
ESE
13
0.2
ESE
13
0.3
ESE
13
0.1
S
16
0.1
NE
12
0.2
ESE
13
0.1
S
15
0.2
ENE
11
0.2
ESE
12
0.2
ENE
11
0.1
S
14
0.4
SSE
6
0.4
SSE
6
0.6
SW
7
0.5
S
6
0.5
S
6
0.5
E
5
0.4
SW
7
0.4
S
6
0.4
E
5
0.4
SW
6
0.3
E
6
Energy kJ
17
16
31
5
6
16
4
13
15
12
4
14
14
30
20
20
11
16
12
9
11
5
Wind waves
Height (m)
Direction
Period (s)
0.5
S
4
0.7
S
5
1.1
SSW
6
1.5
SSW
7
1.8
SSW
7
2.3
SW
7
2.2
SW
7
1.8
SW
7
1.6
SW
7
1.1
E
9
1.4
E
9
1.7
E
5
1.7
E
6
1.4
ENE
6
1
ENE
5
0.5
NE
5
0.5
E
5
0.3
W
3
0.2
W
3
Energy kJ
9
22
92
195
324
480
475
336
258
211
341
166
197
140
51
11
11
1
1
Nearest Offshore or Glassy
Rating
(10 max)
1
2
3
1
1
2
3
3
2
2
1
1
1
1
1
2
2
2
2
1
1
1
1
1
Distance (km)
47
64
64
148
61
60
33
12
12
47
148
43
501
14
0
0
0
64
64
64
64
64
64
36
Best forecast wave conditions in Chiba
Rating
(10 max)
2
2
3
2
3
3
3
1
1
2
2
2
2
1
1
1
1
2
Best forecast wave conditions in Japan
Rating
(10 max)
1
2
3
1
2
2
3
3
3
2
1
2
1
1
2
2
2
2
2
1
1
1
2
2
Header Global
Rating
(10 max)
9
9
8
9
8
7
7
7
5
5
5
5
5
4
5
5
5
5
5
5
6
8
7
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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