Ohara Surf Break

Lat Long: 35.25° N 140.40° E

Ohara Surf Forecast and Surf Report

Issued: 2 pm 28 Aug 2026 (local time)

Forecast update in  hr  min

Today's Ohara sea temperature is
27.9°C
1.2° 

Ohara surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Ohara surf forecast from 28 Aug 2026:

  • Best quality surf: Tuesday 1 Sep, 12AM (local time) - 2.5ft (0.8m), 12s period, ESE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 1 Sep, 6PM (local time) - 3.5ft (1.0m), 12s period, ESE swell with 288 kJ wave energy.
  • Next surfable swell (1★+): Sunday 30 Aug, 3PM (local time) - 1.5ft (0.5m), 11s period with E swell.

Best Forecast Surf Conditions for Ohara this week:

The surf forecast for Ohara over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 30) at 3PM. The primary swell is predicted to be 0.5m and 11s period with a secondary swell of 0.6m and 5s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Ohara in the next 16 days are 1.0m 12s and forecast to arrive on Tuesday (Sep 01) at 6PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Monday (Aug 31) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Sun 30th Aug)1.5ft (0.5m) 11s
Best Surf12AM (Tue 1st Sep)2.5ft (0.8m) 12s
Most Powerful 6PM (Tue 1st Sep)3.5ft (1.0m) 12s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it.

We’re looking at a 16-day window for Ohara, and honestly, the first half is a bit of a mixed bag. The water is sitting at about 82°, which is a touch warmer than normal for this time of year, so you’ll be comfortable in boardshorts.

The first real chance to get wet comes on Friday the 28th afternoon. There’s a 5 ft swell from the SW, with a period of 7 seconds, and the wind is glassy from the WSW at 3 mph. The combined energy is moderate (417). It’s not gonna be huge, but it’ll be clean and fun for an intermediate. Conditions are just about as good as they get right there.

Saturday the 29th and Sunday the 30th are pretty much a write-off. The wind swings onshore and the swell drops to 2 ft. It’s small and choppy. Not worth paddling out.

Monday the 31st is a quiet one too, with a tiny 1 ft swell, but by the afternoon the wind goes offshore from the SSW at 12 mph, cleaning up the 2 ft leftovers. It’s surfable, but just barely.

Now, here’s where it gets interesting. The first real standout is Tuesday morning, September 1st. Glassy conditions, wind from the S at 3 mph, and a clean 3 ft swell from the ESE with an 11-second period. Combined energy is a solid 290 (moderate). That’s a nice, clean groundswell that’ll offer some proper shape. The afternoon looks just as good with offshore SSE winds. This is the best day of the first week – no question.

Wednesday the 2nd keeps the fun going with gentle offshore winds and 2-3 ft swell from the ESE and S. Still clean, still good.

Things get a bit dicey again from Thursday the 3rd through Sunday the 7th. The wind picks up, the swell direction shifts, and the energy is there but the quality is poor. A few glassy moments on the 4th and 5th, but the swell is short-period and messy. The 5th of September does have a punchy 5 ft swell from the E with a 6-second period, but it’s so short-period it’ll be a bit of a close-out. Still, with offshore wind in the afternoon, it’s a possible session for the brave.

The middle of the second week, from the 8th to the 10th, is dominated by cross-offshore winds and moderate swell, but it’s not clean enough to get excited about. The energy is there (over 300 in places), but the wind is just too strong or cross for real quality.

Now, hold on to your board. The biggest standout of the entire 16-day window is the 11th and 12th of September. A massive, very long-period groundswell from the SE is forecast. We’re talking 10 ft to 16 ft with a period of 16-19 seconds. The combined energy hits 7050 and then 14907, which is strong to very strong. This is a huge, powerful, straight-up groundswell. The wind is light and offshore or cross-offshore. Sounds perfect, right? Well, here’s the catch: *this is too big for this break.* The data says it’s simply too big for Ohara. This is for experts only, and even then, you’d want to be very careful. For a standard intermediate, it’s a no-go. This is a real shame, because the conditions otherwise would be absolutely epic. This is the kind of setup that, if it were a couple of feet smaller, would be a day for the books.

So, to sum it up: your best bet for clean, fun, manageable surf is Tuesday, September 1st. The 11th and 12th would be the biggest, most powerful swell of the forecast, but it's too big for this spot.

Rusty.

Short Range Forecast

Moderate rain (total 10mm), heaviest on Fri afternoon. Warm (max 31°C on Fri afternoon, min 23°C on Sat afternoon). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 29°C on Thu morning, min 25°C on Mon night). Winds increasing (calm on Tue morning, fresh winds from the SSW by Thu morning).

Fri
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
0
0
0
0
1
0
1
1
2
2
2
2
2
2
2
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
SW
7
0.6
E
12
0.6
E
12
1.1
ENE
5
1.1
E
5
0.5
E
11
0.5
E
11
0.5
E
11
0.4
E
11
0.5
E
11
0.8
ESE
12
0.9
ESE
11
0.9
ESE
11
1
ESE
11
0.7
ESE
10
0.8
S
12
0.9
S
10
0.8
SSW
10
0.7
E
11
0.6
SSW
10
Wave Graph
Metric surfscale
Energy kJ
192
99
96
60
71
59
61
57
37
70
169
221
229
254
115
171
164
144
114
86
Wind (km/h)
5
WSW
15
ENE
20
E
25
ENE
20
ENE
15
NE
5
NE
10
WNW
5
NW
20
SSW
15
SW
5
S
10
SSE
10
SSE
15
SSE
15
S
20
SSW
25
SSW
30
SSW
30
SW
Wind State
glassy
cross-on
cross
cross-on
cross-on
cross-on
glassy
cross
glassy
off
cross-off
glassy
off
off
off
off
off
cross-off
cross-off
cross-off
High Tide
5:07PM1.36m
4:29AM1.43m
5:24PM1.39m
5:09AM1.42m
5:43PM1.41m
5:50AM1.39m
6:02PM1.43m
6:34AM1.32m
6:22PM1.43m
7:23AM1.23m
6:45PM1.43m
8:25AM1.12m
7:09PM1.41m
Low Tide
10:44PM0.63m
11:02AM0.24m
11:16PM0.53m
11:29AM0.32m
11:48PM0.43m
11:56AM0.44m
00:24AM0.36m
12:21PM0.57m
1:03AM0.32m
12:45PM0.72m
1:48AM0.31m
1:05PM0.86m
2:46AM0.34m
light rain
thunderstorm
light rain
cloud
light rain
rain showers
thunderstorm
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:07
5:07
5:09
5:09
5:09
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:12
6:09
6:08
6:07
6:06
6:05
6:02
 mm
1
3
1
2
2
1
Temp °C
31
27
25
23
24
25
26
23
27
28
26
28
28
26
28
28
27
29
28
27
Feels °C
35
31
26
22
23
27
31
25
30
30
29
31
31
30
31
31
31
30
28
27
  • Map Icons:
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  • 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 Ohara Surf forecast

The above surf forecast table for Ohara provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ohara can be found by selecting the local surf guide option on the grey menu. Our Ohara 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 (Ohara) 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 Ohara 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.

Ohara is 2 km (1 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.

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