Big Ben surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 pm Monday 04 May 2026 JST
Forecast update in hr  min  s Forecast update imminent
Big Ben surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Big Ben sea temperature is
19.4° C
(Which is normal for this time of year)

How big are the waves at Big Ben today?

The current surf forecast for Big Ben at 4AM is: 1.7m 9s primary swell from a South-southwest direction and 0.4m 10s secondary swell from a East-southeast direction (forecast issued at 08:00pm May 04). An open ocean swell of 0.7m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (05 May)3ft (0.9m)9s
Afternoon (05 May)2ft (0.6m)9s
Evening (05 May)2ft (0.6m)10s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 11mm), heaviest on Wed night. Warm (max 21°C on Thu morning, min 13°C on Mon night). Wind will be generally light.

Mon
4
Tuesday
5
Wednesday
6
Thursday
7
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)
0
!
1
1
1
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
3
SW
9
3
SW
9
2.2
SW
9
1.7
SSW
9
1.1
SW
9
0.9
SW
9
0.6
SW
9
0.6
SW
9
0.6
ESE
10
0.6
ESE
10
0.6
ESE
10
0.6
ESE
9
0.6
ESE
9
0.6
ESE
9
1
SSE
6
1.1
SSE
6
1.1
SSE
6
1.1
SE
6
1.1
SE
6
1.1
SE
6
1.1
SE
6
1.1
SE
7
1.1
SE
7
0.7
ESE
10
Wave Graph
Metric surfscale
Energy kJ
1531
1373
800
440
176
132
62
54
63
61
60
59
58
56
63
80
82
77
80
91
91
97
97
94
Wind (km/h)
45
SW
25
W
25
NNE
25
N
15
NNE
10
NNE
15
SE
10
SE
10
SSE
10
SSE
15
S
15
S
10
SSE
20
SSE
15
SSE
20
SSE
15
SSE
15
SSE
10
ESE
10
NE
15
NNE
15
N
5
S
15
SW
cross
cross-off
cross-off
cross-off
cross-off
cross-off
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
cross
cross-off
cross-off
glassy
cross
High Tide
6:51PM1.32m
5:06AM1.43m
7:40PM1.26m
5:34AM1.38m
8:37PM1.20m
6:04AM1.31m
Low Tide
11:46PM0.88m
12:24PM-0.02m
00:18AM0.95m
1:05PM0.05m
00:55AM1.00m
1:52PM0.16m
part cloud
cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:45
4:43
4:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:25
6:27
6:28
6:29
2
5
3
1
Temp °C
20
18
15
14
13
16
17
16
16
16
17
17
17
18
19
18
17
16
16
16
16
18
21
21
12
13
9
8
8
12
13
13
13
13
15
15
15
15
16
15
15
15
16
16
15
17
22
19
Swell 1
Height (m)
Direction
Period (s)
0.4
ESE
10
0.4
ESE
10
2.2
SW
9
1.7
SSW
9
1.1
SW
9
0.9
SW
9
0.6
SW
9
0.6
SW
9
0.6
ESE
10
0.6
ESE
10
0.6
ESE
10
0.6
ESE
9
0.6
ESE
9
0.6
ESE
9
0.6
ESE
9
0.6
ESE
9
0.6
ESE
9
0.6
ESE
9
0.6
ESE
9
1.1
SE
6
1.1
SE
6
1.1
SE
7
1.1
SE
7
1.1
SE
6
Energy kJ
40
43
800
440
176
132
62
46
63
61
60
59
58
56
56
56
55
54
56
91
91
97
97
94
Swell 2
Height (m)
Direction
Period (s)
0.4
ESE
10
0.4
ESE
10
0.7
S
7
0.6
S
7
0.6
S
7
0.5
ESE
10
0.5
SW
8
0.4
SSE
7
0.4
SW
8
0.3
SW
8
0.2
WSW
8
0.2
WSW
7
0.1
SW
7
0.1
SW
7
0.1
SW
7
0.1
W
6
0.6
ESE
10
0.6
ESE
10
0.7
ESE
10
0.7
ESE
10
0.7
ESE
10
Energy kJ
43
41
52
35
35
54
34
15
16
10
6
5
2
2
2
1
63
64
88
88
90
Swell 3
Height (m)
Direction
Period (s)
0.4
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
S
7
0.5
S
7
0.4
SW
8
0.1
N
11
0.3
SE
11
0.3
SE
11
0.1
NE
5
0.1
NE
9
0.1
NE
7
0.1
N
6
0.1
SW
6
0.1
N
8
Energy kJ
40
55
54
24
24
17
2
19
19
1
3
2
1
2
1
Wind waves
Height (m)
Direction
Period (s)
3
SW
9
3
SW
9
0.6
NNE
4
0.7
NE
4
0.7
NE
5
0.5
NE
5
0.4
ENE
5
0.5
E
4
0.5
E
4
0.5
ESE
4
0.7
SE
7
0.8
SSE
4
0.8
SSE
5
0.9
SSE
5
1
SSE
6
1.1
SSE
6
1.1
SSE
6
1.1
SE
6
1.1
SE
6
0.1
NE
7
Energy kJ
1531
1373
12
19
27
12
8
7
7
8
46
24
33
44
63
80
82
77
80
2
Nearest Offshore or Glassy
Rating
(10 max)
1
2
4
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
530
56
81
81
56
0
38
30
30
30
120
30
30
38
30
184
184
513
29
6
0
0
0
30
Best forecast wave conditions in Chiba
Rating
(10 max)
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
1
4
4
2
3
2
1
1
1
1
1
1
1
1
2
1
1
2
1
1
1
1
2
2
Header Global
Rating
(10 max)
5
5
4
5
5
4
5
5
5
5
5
4
5
5
6
5
5
9
5
9
5
9
5
6
  • 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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