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Onjuku surf break
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Onjuku Surf Forecast / Chiba / Japan

12 Day Weather and Surf, issued 8 am Thursday 30 Mar 2023 JST
Forecast update in  hr  min  s Update imminent
Onjuku surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Onjuku sea temperature is 17.5 °C (Statistics for 30 Mar 1981-2005 - mean: 17.2 max: 18.4 min: 15.8 °C)
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Icon legend buoysLive Wave Height (m)
Icon legend windLive Wind Speed (km/h)
Onjuku.12
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Onjuku surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Onjuku sea temperature is 17.5 °C (Statistics for 30 Mar 1981-2005 - mean: 17.2 max: 18.4 min: 15.8 °C)

Eyeball surf reportRecent Eyeball Surf Reports for Chiba

  1. weather stationWind Update Continuing clean conditions at Onjuku (light winds from the NE at Katsuura 5 km from Onjuku).

    Onjuku
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2 h 3 min ago

Light
7 km/h
NE
Clean
Please reload the page to see if there are any updates.


Best Forecast Surf Conditions for Onjuku this week:

The surf forecast for Onjuku over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Mar 30) at 12PM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.6m and 8s. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Onjuku in the next 12 days are 2.0m 9s and forecast to arrive on Monday (Apr 03) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Sunday (Apr 02) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Thu 30th Mar)4.5ft (1.4m) 8s
Best Surf 9PM (Mon 3rd Apr)6.5ft (2.0m) 9s
Most Powerful 9PM (Mon 3rd Apr)6.5ft (2.0m) 9s

Table - best surf conditions forecast for Onjuku over the next 12 days.

Updates in  hr  min  s Update imminent
Thursday
30
Friday
31
Saturday
01
Sunday
02
Monday
03
Tuesday
04
Wednesday
05
Thursday
06
Friday
07
Saturday
08
Sunday
09
Monday
10
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
333210101012223333320003200002100022
Swell
Height Map
T japan.htsgw.metric.12.cc23
T japan.htsgw.metric.33.cc23
T japan.htsgw.metric.57.cc23
T japan.htsgw.metric.81.cc23
T japan.htsgw.metric.105.cc23
T japan.htsgw.metric.129.cc23
T japan.htsgw.metric.153.cc23
T japan.htsgw.metric.177.cc23
T japan.htsgw.metric.201.cc23
T japan.htsgw.metric.225.cc23
T japan.htsgw.metric.249.cc23
T japan.htsgw.metric.273.cc23
Wave Height (m) & direction (?)
1.4
E
1.3
E
1.2
E
1
E
0.9
E
0.8
E
0.8
SE
0.6
E
0.8
SE
0.5
E
1.4
E
1.6
E
1.6
ENE
1.5
ENE
1.4
ENE
1.3
ENE
1.5
ENE
1.5
ENE
1.3
ENE
1.2
ENE
1.1
E
1.1
E
2.2
SSW
1
E
0.8
E
0.8
E
0.7
ENE
1.3
SSW
1.9
SSW
1.7
NE
0.9
ENE
0.3
ESE
0.3
ESE
1.4
SSE
1.6
SSE
1.4
SE
Period(s) (?)8988888969777881010101010101171211111067771010667
Wave
Graph
(?)Metric surfscale
Energy (?)2702572051361139293545339167229273291275289442442320269260305513271160151110136352268662019115197175
Wind
(km/h)
10
NNE
10
SSE
10
S
10
SSW
10
SW
15
SSW
5
NE
25
ENE
15
NE
20
NE
25
ENE
30
NE
30
NE
25
NE
20
NNE
10
NNE
10
SE
5
ENE
10
ENE
15
S
35
SW
40
SSW
35
SW
15
NE
10
E
25
SSE
30
S
20
SW
35
SW
10
SW
5
NW
20
SSE
30
WSW
20
W
35
N
30
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offonononcross-
on
cross-
on
glasscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
on
cross-
off
cross-
off
oncross-
on
cross-
on
cross-
on
cross-
off
cross-
off
cross-
on
oncross-
on
cross-
on
cross-
on
glassoncrosscrossoffoff
High Tide
/ height (m)
3:54AM
1.15
3:28AM
1.19
12:59PM
1.09
3:33AM
1.23
2:12PM
1.18
3:45AM
1.28
3:00PM
1.26
3:59AM
1.32
3:41PM
1.33
4:15AM
1.36
4:20PM
1.38
4:31AM
1.40
4:57PM
1.41
4:49AM
1.43
5:35PM
1.41
5:08AM
1.45
6:15PM
1.38
5:28AM
1.45
6:59PM
1.32
5:50AM
1.45
7:49PM
1.24
Low Tide
/ height (m)
5:52PM
0.52
7:25PM
0.49
8:47AM
0.98
8:19PM
0.44
9:04AM
0.87
8:58PM
0.40
9:26AM
0.74
9:30PM
0.38
9:50AM
0.61
9:59PM
0.40
10:16AM
0.48
10:26PM
0.44
10:43AM
0.36
10:53PM
0.50
11:12AM
0.26
11:20PM
0.59
11:43AM
0.19
11:46PM
0.69
12:16PM
0.15
12:11AM
0.79
12:54PM
0.15
12:37AM
0.90

Note: the tide data above is for Katsuura which is 7 km away. Surf properties and timing are calculated for Onjuku.New forecast is published every 6 hours at www.surf-forecast.com. See detailed tide info and graph
Offshore winds at Onjuku blow from the N

Thursday
30
Friday
31
Saturday
01
Sunday
02
Monday
03
Tuesday
04
Wednesday
05
Thursday
06
Friday
07
Saturday
08
Sunday
09
Monday
10
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
rain showersrain showersrain showerslight rainlight rainpart cloudclearclearpart cloudcloudclearpart cloudclearclearclearclearclearpart cloudpart cloudpart cloudcloudlight rainpart cloudrain showerspart cloudcloudlight raincloudcloudmod rainpart cloudclearpart cloudclearrain showersclear
Summaryrain shwrsrain shwrsrain shwrslight rainlight rainsome cloudsclearclearsome cloudscloudyclearsome cloudsclearclearclearclearclearsome cloudssome cloudssome cloudscloudylight rainsome cloudsrain shwrssome cloudscloudylight raincloudycloudymod. rainsome cloudsclearsome cloudsclearrain shwrsclear
Rain (mm)
11111----------------1-1--1--6----1-
Temp. °C15161516161417161515141212121114131315161718181215161617171315171616129
Low °C13151516151315151314131011111011131214151717151213161617141215161415109
Feels °C (?)131413141412141111986556121011131212111261111101310814151195-2
Sunrise5:28--5:28--5:26--5:24--5:24--5:22--5:20--5:18--5:18--5:16--5:15--5:13--
Sunset-5:57--5:58--5:59--5:59--6:00--6:00--6:01--6:02--6:02--6:04--6:05--6:06-

Short Range Forecast: Light rain (total 5mm), mostly falling on Thu morning. Very mild (max 17°C on Sat morning, min 13°C on Thu morning). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 15°C on Sun morning, min 10°C on Sun night). Winds decreasing (fresh winds from the NNE on Sun night, calm by Tue night).

Days 6-9 Weather Summary Light rain (total 3mm), mostly falling on Thu morning. Very mild (max 18°C on Thu morning, min 12°C on Thu night). Winds decreasing (strong winds from the SSW on Thu morning, light winds from the NNE by Thu night).

Long Range Forecast: Light rain (total 7mm), mostly falling on Sat night. Very mild (max 17°C on Sat morning, min 9°C on Mon night). Mainly strong winds.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Onjuku surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Information about the Onjuku Surf forecast

The above surf forecast table for Onjuku provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Onjuku can be found by selecting the local surf guide option on the grey menu. Our Onjuku 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 (Onjuku) 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 Onjuku 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.

Onjuku is 3 km (2 miles) from Ohara. If you plan a holiday in Chiba, look for hotels and other accommodation in Ohara. Ohara has rooms for a wide range of budgets as well as car hire and transport links.