Ohara Surf Forecast

/ Chiba (19 surf breaks) /

Japan (129 surf breaks) / Lat Long: (35.25° N 140.40° E)

Surf Forecasts

Ohara surfForecast / Chiba / Japan

12 Day Weather and Surf, issued 8 pm Monday 18 Aug 2025 JST

Forecast update in hr min s Forecast update imminent

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

Today's Ohara sea temperature is 26.2° C
(Which is slightly cooler than normal)

Best Forecast Surf Conditions for Ohara this week:

The surf forecast for Ohara over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 19) at 6AM. The primary swell is predicted to be 0.3m and 12s period with a secondary swell of 0.3m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Ohara in the next 12 days are 1.3m 7s and forecast to arrive on Thursday (Aug 21) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Thursday (Aug 21) at 6AM.

Wave Type	Time (JST) & Date	Wave Height & Period
Next good surf (1 star+)	6AM (Tue 19th Aug)	1ft (0.3m) 12s
Best Surf	9AM (Thu 21st Aug)	4.5ft (1.3m) 7s
Most Powerful	9AM (Thu 21st Aug)	4.5ft (1.3m) 7s

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

Hourly 12 Days

Chiba Surf

Print Surf Table

Updates in hr min s Forecast update imminent

	Short Range Forecast Mostly dry. Warm (max 30°C on Tue morning, min 25°C on Mon night). Mainly fresh winds.										Days 3-6 Weather Summary Mostly dry. Warm (max 30°C on Sun morning, min 25°C on Sat night). Wind will be generally light.
		Tuesday 19			Wednesday 20			Thursday 21			Friday 22			Saturday 23			Sunday 24			Mon 25
	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM
Rating (10 max)	0	1	0	0	0	0	0	2	0	0	0	1	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	E	E	SE	SE	SE	ESE	SE	SW	E	SE	SE	SE	SE	SE	ESE	ESE	SE	SE	SE	SSW	ESE
Period(s) (?)	13	12	14	14	13	10	13	7	9	12	12	10	9	9	8	8	8	8	8	5	8
Wave Graph (?)
Energy (?)	65	57	71	65	68	70	49	248	45	47	38	68	37	35	33	39	29	27	28	35	29
Wind (km/h)	SW	SW	SSW	SW	SW	SSW	SW	SW	SSW	S	E	ESE	SSW	SW	SSW	SW	SW	SW	SW	S	SSW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	glass	cross	cross- off	glass	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	off	off
High Tide / height (m)	9:55PM 1.30		4:14PM 1.22	11:56PM 1.28		4:20PM 1.27	1:32AM 1.32		4:37PM 1.30	2:38AM 1.38		4:55PM 1.32		3:30AM 1.42	5:13PM 1.33		4:16AM 1.44	5:31PM 1.35		4:57AM 1.43	5:49PM 1.36
Low Tide / height (m)		7:17AM 0.28		7:30PM 1.18	8:25AM 0.20		8:47PM 1.09	9:15AM 0.14		9:29PM 0.98	9:55AM 0.12		10:04PM 0.86	10:30AM 0.13		10:36PM 0.74	11:01AM 0.19		11:08PM 0.63	11:28AM 0.27

		Tuesday 19			Wednesday 20			Thursday 21			Friday 22			Saturday 23			Sunday 24			Mon 25
Sunrise	-	5:00	-	-	5:01	-	-	5:01	-	-	5:01	-	-	5:03	-	-	5:03	-	-	5:03	-
Sunset	-	-	6:22	-	-	6:22	-	-	6:21	-	-	6:19	-	-	6:17	-	-	6:16	-	-	6:15

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	27	30	28	27	29	28	26	29	28	26	28	28	27	29	29	26	30	30	26	29	29
Feels °C (?)	30	30	28	28	29	28	27	30	29	29	31	31	32	31	28	28	31	31	28	32	31

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Chiba

Wind Update Continuing clean conditions at Ohara (calm at Katsuura 14 km from Ohara). 0.7m 5s windswell from the SSW with a 0.5m 13s groundswell from the E and a 0.3m 9s swell, also from the E as well as a 0.3m 11s groundswell, also from the SE. 4 swells combining to make bigger set waves.
1 hour 29 minutes ago Ohara

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1 h 29 min ago

4 km/h

WSW

Clean

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ohara 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 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 12 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.