Asakawa Surf Forecast

/ Shikoku (17 surf breaks) /

Japan (129 surf breaks) / Lat Long: (33.63° N 134.38° E)

Surf Forecasts:

Asakawa surfForecast / Shikoku / Japan

12 Day Weather and Surf, issued 8 pm Thursday 16 Oct 2025 JST

Forecast update in hr min s Forecast update imminent

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

Today's Asakawa sea temperature is 26.4° C
(Which is 2.2°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Asakawa this week:

The surf forecast for Asakawa over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Oct 18) at 9PM. The primary swell is predicted to be 1.0m and 7s period with a secondary swell of 0.2m and 9s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Asakawa in the next 12 days are 2.1m 7s and forecast to arrive on Saturday (Oct 18) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Tuesday (Oct 21) at 9AM.

Wave Type	Time (JST) & Date	Wave Height & Period
Next good surf (1 star+)	9PM (Sat 18th Oct)	3.5ft (1.0m) 7s
Best Surf	12AM (Fri 24th Oct)	4.5ft (1.4m) 10s
Most Powerful	3AM (Sat 18th Oct)	7ft (2.1m) 7s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Moderate rain (total 11mm), heaviest on Fri night. Warm (max 27°C on Sat morning, min 19°C on Thu night). Wind will be generally light.										Days 3-6 Weather Summary Moderate rain (total 17mm), heaviest on Sun night. Warm (max 23°C on Mon morning, min 14°C on Tue night). Wind will be generally light.
		Friday 17			Saturday 18			Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thu 23
	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	0	0	0	0	0	1	0	0	1	0	1	0	0	0	0	0	0	0	1	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	ESE	ESE	ESE	ESE	ESE	SE	SE	SE	SE	SSE	SE	SE	SE	SE	ESE	ESE	ESE	ESE	ESE	ESE	ESE
Period(s) (?)	8	10	10	7	7	7	7	7	9	9	9	9	9	9	8	9	9	9	9	10	9
Wave Graph (?)
kJ (?)	24	10	18	372	204	147	79	49	39	49	27	91	61	37	36	137	140	131	181	289	271
Wind (km/h)	N	N	ENE	ESE	SSW	SSW	N	NNE	NNE	NNE	NNE	NNE	NNE	NNE	NNE	N	N	N	N	NNE	NE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	cross	cross- on	cross- on	cross- on	off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off
High Tide / height (m)	2:52AM 1.42		3:58PM 1.62		3:47AM 1.54	4:21PM 1.68		4:30AM 1.63	4:43PM 1.72		5:07AM 1.71	5:04PM 1.75		5:41AM 1.75	5:25PM 1.76		6:14AM 1.77	5:46PM 1.76		6:47AM 1.75
Low Tide / height (m)	9:28PM 0.93	9:20AM 0.52		10:01PM 0.75	10:01AM 0.51		10:29PM 0.59	10:35AM 0.53		10:56PM 0.44	11:05AM 0.56		11:22PM 0.33	11:33AM 0.62		11:48PM 0.24	12:00PM 0.68		12:15AM 0.19		12:26PM 0.76

		Friday 17			Saturday 18			Sunday 19			Monday 20			Tuesday 21			Wednesday 22			Thu 23
Sunrise	-	6:07	-	-	6:07	-	-	6:09	-	-	6:09	-	-	6:11	-	-	6:11	-	-	6:11	-
Sunset	-	-	5:27	-	-	5:25	-	-	5:24	-	-	5:22	-	-	5:22	-	-	5:21	-	-	5:20

Rain (mm)	3	-	-	7	-	-	-	-	1	6	-	-	-	-	3	6	2	-	-	-	-
Temp. °C	25	25	24	24	27	27	24	23	22	19	23	22	19	19	17	15	16	17	15	21	21
Feels °C (?)	29	23	23	26	27	27	26	22	21	19	23	21	16	15	12	11	14	15	12	18	18

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 cross-off at Asakawa (moderate winds from the W at Murotomisaki(47899-0) 46 km from Asakawa). 0.8m 4s local chop from the SSW with a 0.8m 4s local chop from the SW and a 0.4m 7s swell from the ESE. 3 swells combining to make bigger set waves.
1 hour 25 minutes ago Asakawa

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46 km away, 1 h 25 min ago

24 km/h

0.0

26.4

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 Asakawa 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 Asakawa Surf forecast

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

Are you planning a holiday in Shikoku? If you are looking for accommodation near Asakawa, camping, hotels and holiday cottages in Shikoku, consider staying in Anan which is 41 km (25 miles) away. Other places in and around Shikoku where you can find information about places to rent, and car hire include Muroto which is 44 km (27 miles) away, Komatsushima, Aki and Kamojima.