Hashikui Bay Surf Forecast

/ Shikoku (17 surf breaks) /

Japan (129 surf breaks)

Surf Forecasts:

Hashikui Bay surfForecast / Shikoku / Japan

12 Day Weather and Surf, issued 2 pm Wednesday 20 Aug 2025 JST

Forecast update in hr min s Forecast update imminent

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

Today's Hashikui Bay sea temperature is 28.0° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Hashikui Bay this week:

The surf forecast for Hashikui Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 20) at 6PM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.3m and 11s. Another secondary swell of 0.1m and 13s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Hashikui Bay in the next 12 days are 0.9m 8s and forecast to arrive on Wednesday (Aug 20) at 9PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Friday (Aug 22) at 6PM.

Wave Type	Time (JST) & Date	Wave Height & Period
Next good surf (1 star+)	6PM (Wed 20th Aug)	2.5ft (0.7m) 8s
Best Surf	6PM (Wed 20th Aug)	2.5ft (0.7m) 8s
Most Powerful	9PM (Wed 20th Aug)	3ft (0.9m) 8s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Light rain (total 4mm), mostly falling on Wed afternoon. Warm (max 32°C on Fri afternoon, min 25°C on Fri night). Wind will be generally light.											Days 3-6 Weather Summary Moderate rain (total 13mm), heaviest on Sun morning. Warm (max 30°C on Sat afternoon, min 26°C on Sun night). Wind will be generally light.
	Wed 20		Thursday 21			Friday 22			Saturday 23			Sunday 24			Monday 25			Tuesday 26
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
Rating (10 max)	1	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSW	SSW	SE	SSW	SSE	SSW	SE	SE	SE	SE	SE	SE	SE	SE	ESE	ESE	SE	SSW	SE	S	SE
Period(s) (?)	8	8	10	8	10	6	10	10	9	9	9	8	8	8	8	8	10	4	10	5	10
Wave Graph (?)
Energy (?)	80	48	23	74	21	26	21	20	29	22	23	19	16	16	12	10	9	13	20	28	32
Wind (km/h)	S	W	ESE	S	NW	SSE	SSW	WSW	NE	S	WNW	E	SE	WNW	ESE	S	SW	SSW	S	WNW	SE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	glass	cross- off	cross	glass	cross- off	cross- off	glass	cross- off	glass	glass	cross- off	glass	glass	cross- off	off	off	cross- off	cross- off	glass
High Tide / height (m)	4:59PM 1.72		3:33AM 1.70	5:26PM 1.80		4:25AM 1.82	5:52PM 1.87		5:10AM 1.92		6:17PM 1.91	5:50AM 2.00		6:41PM 1.93	6:28AM 2.03		7:05PM 1.94	7:05AM 2.01		7:29PM 1.93	7:43AM 1.95
Low Tide / height (m)		10:20PM 1.19	10:32AM 0.35		10:57PM 1.06	11:11AM 0.28		11:29PM 0.92	11:46AM 0.25		11:59PM 0.79		12:19PM 0.27	12:30AM 0.67		12:50PM 0.34	1:01AM 0.58		1:20PM 0.44	1:34AM 0.52

	Wed 20		Thursday 21			Friday 22			Saturday 23			Sunday 24			Monday 25			Tuesday 26
Sunrise	-	-	5:26	-	-	5:28	-	-	5:28	-	-	5:28	-	-	5:30	-	-	5:30	-	-	5:31
Sunset	6:43	-	-	6:42	-	-	6:40	-	-	6:39	-	-	6:37	-	-	6:37	-	-	6:36	-	-

Rain (mm)	1	1	-	-	1	-	-	-	1	1	-	2	2	1	2	2	1	2	3	2	-
Temp. °C	30	27	30	30	27	30	32	26	29	30	28	30	30	27	30	30	27	29	30	27	30
Feels °C (?)	33	30	33	34	32	32	32	29	34	34	33	35	34	32	33	33	32	33	33	31	33

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 Shikoku

Wind Update The wind is still offshore at Hashikui Bay (light winds from the SSW at Komatsujima Airport 30 km from Hashikui Bay). 0.4m 9s swell from the SSE with a 0.3m 5s windswell from the SSW and a 0.2m 9s swell from the SE as well as a 0.1m 12s groundswell, also from the SE. 4 swells combining to make bigger set waves.
1 hour 51 minutes ago Hashikui Bay

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30 km away, 1 h 51 min ago

19 km/h

SSW

0.0

28.0

Air / Water (°C)

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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 Hashikui Bay 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 Hashikui Bay Surf forecast

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

Hashikui Bay is 23 km (14 miles) from Anan. If you plan a holiday in Shikoku, look for hotels and other accommodation in Anan. Anan has rooms for a wide range of budgets as well as car hire and transport links.