Mera surfForecast / Chiba / Japan

information circle16 Day Weather and Surf, issued 8 pm Sunday 24 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)

Best Forecast Surf Conditions for Mera this week:

The surf forecast for Mera over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (May 25) at 6AM. The primary swell is predicted to be 1.5m and 8s period with a secondary swell of 0.2m and 11s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Mera in the next 16 days are 1.9m 14s and forecast to arrive on Sunday (May 31) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 10s period and expected on Monday (May 25) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 25th May)5ft (1.5m) 8s
Best Surf12AM (Mon 1st Jun)6ft (1.9m) 14s
Most Powerful 9PM (Sun 31st May)6ft (1.9m) 14s

Table - best surf conditions forecast for Mera over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 6mm), mostly falling on Wed morning. Warm (max 22°C on Tue morning, min 20°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 16mm), heaviest on Thu morning. Warm (max 23°C on Fri morning, min 20°C on Thu morning). Winds decreasing (near gales from the SW on Fri afternoon, calm by Sat morning).

Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sun
31
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
1
2
1
2
2
2
1
2
1
1
0
0
0
0
0
0
3
0
1
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
E
9
1.3
SE
8
1.5
ESE
8
1.3
ESE
8
1.4
ESE
7
1.4
ESE
7
1.3
ESE
7
1.3
ESE
7
1.3
ESE
7
1.3
ESE
7
1.3
SE
7
1.4
SE
8
2.4
SSW
7
2.5
SW
8
2.5
SW
7
2.2
SSW
8
1.6
SW
7
1.2
WSW
7
1.4
SW
7
0.9
S
15
1.6
S
14
Wave Graph
Metric surfscale
Energy kJ
251
200
240
178
191
185
173
167
172
163
162
266
495
805
677
557
261
123
163
348
1030
Wind (km/h)
20
E
15
NE
15
E
10
ENE
15
ENE
15
E
10
ESE
10
NE
5
ENE
5
SSW
25
SW
20
S
45
SW
45
SW
50
SW
25
W
10
E
15
SSW
20
NW
30
NE
35
E
cross-off
off
cross-off
off
off
cross-off
cross-off
off
cross-off
glassy
on
cross-on
on
on
on
cross-on
cross-off
cross-on
cross-off
off
cross-off
High Tide
11:56PM1.16m
12:00PM1.00m
00:34AM1.19m
1:37PM1.05m
1:08AM1.24m
2:46PM1.13m
1:40AM1.29m
3:39PM1.20m
2:12AM1.34m
4:22PM1.26m
2:44AM1.37m
5:01PM1.30m
3:17AM1.39m
5:38PM1.32m
Low Tide
6:23AM0.70m
5:55PM0.58m
7:23AM0.53m
6:56PM0.68m
8:08AM0.37m
7:50PM0.76m
8:46AM0.24m
8:37PM0.81m
9:22AM0.13m
9:19PM0.84m
9:56AM0.06m
9:58PM0.86m
10:29AM0.01m
part cloud
clear
clear
part cloud
part cloud
cloud
rain showers
light rain
light rain
light rain
mod rain
light rain
rain showers
clear
clear
clear
cloud
part cloud
part cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:31
4:31
4:30
4:30
4:28
4:28
4:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:43
6:43
6:44
6:45
6:45
6:45
6:46
6:46
1
3
2
1
7
1
7
1
Temp °C
20
21
21
20
22
22
21
21
22
22
21
21
22
23
23
23
22
22
22
21
21
19
20
20
20
22
22
21
23
25
25
19
18
19
18
17
16
24
22
17
15
16
Swell 1
Height (m)
Direction
Period (s)
1.4
SE
7
1.3
SE
8
1
ENE
11
1.3
ESE
8
1.4
ESE
7
0.8
ENE
10
1.3
ESE
7
1.3
ESE
7
1.3
ESE
7
1.3
ESE
7
1.3
SE
7
0.4
NE
10
0.8
ESE
8
0.6
E
9
0.5
E
10
0.6
E
11
1.2
SW
7
0.9
SW
7
1.4
SW
7
1
S
12
1.6
S
14
Energy kJ
217
200
263
178
191
116
173
167
172
163
162
27
94
63
46
89
156
79
163
300
1030
Swell 2
Height (m)
Direction
Period (s)
0.2
ESE
11
1.2
ENE
10
0.3
SSW
8
1
ENE
11
0.9
ENE
11
0.2
ESE
15
0.6
ENE
10
0.7
S
6
0.6
S
6
0.4
NE
10
0.4
NE
10
0.2
ESE
13
0.3
ENE
11
0.3
ESE
12
0.3
ESE
12
0.1
NE
11
0.8
SSE
7
0.7
SSE
7
0.6
E
11
0.9
S
15
0.6
E
10
Energy kJ
11
312
14
263
164
22
78
36
27
27
26
17
23
29
28
5
62
45
82
348
74
Swell 3
Height (m)
Direction
Period (s)
0.1
E
16
0.2
ESE
11
0.3
SSW
9
0.5
S
7
0.2
ESE
15
0.1
SE
10
0.2
ESE
14
0.5
ENE
10
0.4
ENE
11
0.2
ESE
13
0.2
ESE
13
0.2
ESE
13
0.3
ESE
12
0.2
ENE
12
0.2
ENE
12
0.1
S
14
0.6
E
11
0.6
E
11
0.6
SSE
6
0.6
SE
11
0.4
SW
6
Energy kJ
5
12
15
24
22
4
21
54
44
18
17
17
31
13
14
4
88
86
26
99
10
Wind waves
Height (m)
Direction
Period (s)
1.3
E
9
1.5
ESE
8
1.4
ESE
7
1.4
SE
8
2.4
SSW
7
2.5
SW
8
2.5
SW
7
2.2
SSW
8
1.6
SW
7
1.2
WSW
7
0.9
ENE
5
0.8
ENE
5
Energy kJ
251
240
185
266
495
805
677
557
261
123
39
36
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
2
2
2
1
2
1
1
2
1
1
1
2
3
3
2
2
2
4
Distance (km)
14
0
14
0
0
0
0
0
0
0
64
88
60
61
544
33
0
64
12
14
483
Best forecast wave conditions in Chiba
Rating
(10 max)
1
2
1
2
2
2
1
2
1
2
2
3
3
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
4
3
3
2
2
2
1
2
1
2
2
1
4
1
2
3
3
2
3
4
4
Header Global
Rating
(10 max)
5
5
4
4
4
9
6
7
7
8
6
7
9
8
5
5
5
5
5
6
6
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Mera Surf forecast

The above surf forecast table for Mera provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mera can be found by selecting the local surf guide option on the grey menu. Our Mera surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Mera) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Mera may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Mera is 9 km (6 miles) from Tateyama. If you plan a holiday in Chiba, look for hotels and other accommodation in Tateyama. Tateyama has rooms for a wide range of budgets as well as car hire and transport links.

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