Aha Rivermouth 48 hour detailed Surf Forecast

Lat Long: 26.72° N 128.30° E

Issued: 2 am 19 Jul 2026 (local time)

Forecast update in hr min

Today's Aha Rivermouth sea temperature is

27.6° C

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

Surf Forecasts:

How big are the waves at Aha Rivermouth today (19 Jul):

Morning surf: Morning surf (19 Jul, local time) - 1.5ft (0.4m), 9s period with ENE swell.
Afternoon surf: Afternoon surf (19 Jul, local time) - 1.5ft (0.4m), 9s period with ENE swell.
Evening surf: Evening surf (19 Jul, local time) - 1.5ft (0.4m), 9s period with ENE swell.

The current surf forecast for Aha Rivermouth at 7AM is: 0.4m 10s primary swell from a East-northeast direction (forecast issued at 02:00am July 19). An open ocean swell of 0.7m 8s is not directed at the surf break, a second open ocean swell of 0.4m 8s is not directed at the surf break. The wind direction is predicted to be glassy.

Time (JST) & Date	Wave Height	Wave Period
Morning (19 Jul)	1.5ft (0.4m)	9s
Afternoon (19 Jul)	1.5ft (0.4m)	9s
Evening (19 Jul)	1.5ft (0.4m)	9s

Table - waves today at Aha Rivermouth. (Swell directed towards the surf break)

	Short Range Forecast Some drizzle, heaviest during Tue afternoon. Warm (max 30°C on Mon afternoon, min 27°C on Tue night). Wind will be generally light.
	Sunday 19								Monday 20								Tuesday 21
	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM
Rating (10 max)	0	0	0	0	0	0	0	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 Period (s)	ENE 10	ENE 10	ENE 10	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 10	ENE 10	ENE 10	ENE 10	ENE 10	E 10	E 9	E 9	E 9	E 9	E 9	E 9	E 9
Wave Graph
kJ	31	31	31	29	29	29	28	28	28	28	29	30	30	30	31	31	47	45	43	43	42	42	42	42
Wind (km/h)	SW	SW	W	NW	NE	ESE	SSE	SE	SE	SSW	WSW	SSW	SW	S	SSW	SSW	SSW	SW	SW	WSW	W	W	WNW	W
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	off	off	glassy	glassy	glassy	glassy	cross-off	cross	cross	off	off	off	off	cross-off	off	off	cross-off	off	off	cross-off	cross-off	cross-off	cross-off	cross-off
High Tide	9:47PM1.94m				9:38AM1.88m				10:21PM1.90m				10:26AM1.72m				10:57PM1.84m				11:20AM1.55m
Low Tide			3:46AM0.71m				4:00PM0.48m				4:33AM0.72m				4:36PM0.67m				5:26AM0.75m				5:13PM0.86m


	—	5:43	—	—	—	—	—	—	—	5:43	—	—	—	—	—	—	—	5:45	—	—	—	—	—	—
	—	—	—	—	—	—	7:21	—	—	—	—	—	—	—	7:21	—	—	—	—	—	—	—	7:20	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	—	—
Temp °C	27	27	28	28	29	29	29	29	29	28	28	28	29	29	30	29	28	28	29	29	29	29	29	28
Feels °C	31	31	33	33	34	33	33	34	34	32	32	32	33	33	33	33	31	31	33	33	33	33	33	33
Swell 1 Height (m) Direction Period (s)	W 7	W 9	W 8	W 8	W 8	W 8	W 7	W 7	W 7	W 7	ENE 9	W 8	W 8	W 7	ENE 10	ENE 10	E 10	E 9	E 9	E 9	E 9	E 9	E 9	E 9
kJ	25	56	65	58	42	40	38	25	23	15	29	32	28	25	31	31	47	45	43	43	42	42	42	42
Swell 2 Height (m) Direction Period (s)	SW 8	SW 8	SW 8	SW 8	SW 7	SW 8	SW 8	SW 8	SW 8	ENE 9	SW 7	ENE 10	ENE 10	ENE 10	W 7	W 7	SW 7	W 9	W 8	W 8	W 7	W 7	W 7	W 6
kJ	15	22	22	20	19	20	31	29	14	28	14	30	30	30	15	14	13	24	21	18	16	15	14	12
Swell 3 Height (m) Direction Period (s)	ENE 10	ENE 10	ENE 10	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	ENE 9	SW 7	W 7	SW 7	SW 7	SE 8	SSW 7	SW 7	W 6	SW 7	SW 7	SW 7	SW 7	SW 7	SW 7	SW 7
kJ	31	31	31	29	29	29	28	28	28	14	14	14	13	3	19	13	13	18	13	13	12	12	12	7
Wind waves Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	SW 7	SW 7	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	—	—	—	—	—	39	23	—	—	—	—	—	—	—	—	—	—
Nearest Offshore or Glassy	Rocky Point Okinawa	Rocky Point Okinawa	Rocky Point Okinawa	Rocky Point Okinawa	Rocky Point Okinawa	Yona Bay Okinawa	Yona Bay Okinawa	Yona Bay Okinawa	Yona Bay Okinawa	Cape Toi Kyu Shu	Cape Toi Kyu Shu	Rocky Point Okinawa	Rocky Point Okinawa	Yona Bay Okinawa	Rocky Point Okinawa	Rocky Point Okinawa	Rocky Point Okinawa	Rocky Point Okinawa	Rocky Point Okinawa	Rocky Point Okinawa	Chialoshui South	Susuki Shizuoka	Rocky Point Okinawa	Ko-Chan (Hedo Point) Okinawa
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	12	12	12	12	12	12	12	12	12	596	596	12	12	12	12	12	12	12	12	12	914	1294	12	17
Best forecast wave conditions in Okinawa	Maeda Point	Kudaka	Suicide Cliffs	Suicide Cliffs	Sesako Island	Sesako Island	Zampa (Inside)	Yona Bay	Yona Bay			Yona Bay	Rocky Point	Ko-Chan (Hedo Point)	Ko-Chan (Hedo Point)	Steps	Ko-Chan (Hedo Point)	Ko-Chan (Hedo Point)	Ko-Chan (Hedo Point)	Ko-Chan (Hedo Point)			Kudaka	Kudaka
Rating (10 max)	1	1	1	1	1	1	1	1	1			1	1	1	1	1	1	1	1	1			1	1
Best forecast wave conditions in Japan	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niijima - Habushiura Izu Islands	Niijima - Awaii Izu Islands	Shimoda Yamatoken (Tatado Hama) Shizuoka	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Susuki Shizuoka	Kisami-Ohama Beach Shizuoka	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba
Rating (10 max)	1	1	1	1	2	1	1	1	1	1	1	1	1	1	2	3	1	1	1	1	2	1	1	2
Header Global	Seconds (White Rock) New Zealand	Kaka Point New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	White Rock - The Spit New Zealand	Seconds (White Rock) New Zealand	Ning Nong Point and Reef New Zealand	Last Chance New Zealand	Seconds (White Rock) New Zealand	Diners Beach New Zealand	Trial Harbour Australia	Aganoa Beach Samoa	Aganoa Beach Samoa	Papatowai New Zealand	Benkunqut Indonesia
Rating (10 max)	6	5	6	6	6	7	7	7	8	7	6	5	5	8	7	5	5	5	5	5	4	4	5	4

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

Latest Updates

Ben Mondy

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 Aha Rivermouth 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.

Aha Rivermouth 48 hour detailed Surf Forecast

How big are the waves at Aha Rivermouth today (19 Jul):

Short Range Forecast

Latest Updates

How Our WaveFinder Tool Makes Forecasting Easier Than Ever Before

The Five Best Forecasts For International Surfing Day 2026

Best Surf Travel Deals & Discounts For 2026 To Help Make Surf Travel Cheaper

Let Our Surf Alerts Do All Your Forecast Heavy Lifting

Talking To Maddie Meddings on New Film Undercurrents. (And Then Watch It!)

FREE! Surf-Forecast.com widget for your website