Amatu 48 hour detailed Surf Forecast

Lat Long: 35.12° N 140.19° E

Issued: 2 am 20 Jul 2026 (local time)

Forecast update in hr min

Today's Amatu sea temperature is

25.4° C

Amatu 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 Amatu today (20 Jul):

Morning surf: Morning surf (20 Jul, local time) - 3ft (0.9m), 9s period with E swell.
Afternoon surf: Afternoon surf (20 Jul, local time) - 3ft (0.9m), 8s period with E swell.
Evening surf: Evening surf (20 Jul, local time) - 4ft (1.2m), 12s period with E swell.

The current surf forecast for Amatu at 6AM is: 0.9m 9s primary swell from a East direction and 0.5m 9s secondary swell from a South-southeast direction, 0.4m 3s secondary swell from a South-southwest direction (forecast issued at 02:00am July 20). The wind direction is predicted to be cross-onshore.

Time (JST) & Date	Wave Height	Wave Period
Morning (20 Jul)	3ft (0.9m)	9s
Afternoon (20 Jul)	3ft (0.9m)	8s
Evening (20 Jul)	4ft (1.2m)	12s

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

	Short Range Forecast Mostly dry. Warm (max 30°C on Tue morning, min 25°C on Mon night). Wind will be generally light.
	Monday 20								Tuesday 21								Wednesday 22
	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	1	1	0	0	0	0	0	0	1	1	1	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	E 9	E 9	E 9	E 9	E 8	E 8	E 9	E 12	E 11	E 11	ENE 11	ENE 11	ENE 10	ENE 10	ENE 10	E 10	E 10	E 10	E 10	E 10	E 10	ENE 10	E 10	ENE 10
Wave Graph
kJ	129	155	126	120	115	116	96	390	410	403	343	337	281	281	222	208	204	204	204	208	208	167	204	167
Wind (km/h)	SSW	SW	SW	SSW	SSW	SSW	SW	SW	SW	SW	SW	SW	SSW	SSW	SW	SW	SW	SW	WSW	SW	SSW	SSW	SSW	SW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross	cross	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross	cross	cross-on	cross-on	cross-on	cross-on	cross-on
High Tide				8:23AM1.24m				8:48PM1.41m					9:27AM1.12m				9:15PM1.38m				11:06AM1.03m
Low Tide		2:30AM0.67m				2:23PM0.60m					3:25AM0.63m			2:53PM0.76m					4:31AM0.59m				3:25PM0.90m


	—	4:37	—	—	—	—	—	—	—	4:39	—	—	—	—	—	—	—	4:39	—	—	—	—	—	—
	—	—	—	—	—	—	6:51	—	—	—	—	—	—	—	6:51	—	—	—	—	—	—	—	6:50	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	25	25	26	28	29	29	27	26	26	25	26	29	30	30	28	26	26	26	26	29	30	30	28	27
Feels °C	29	28	30	31	32	31	30	30	30	28	30	33	33	33	32	30	30	30	31	34	34	34	32	31
Swell 1 Height (m) Direction Period (s)	E 9	E 9	E 9	E 9	E 8	E 8	E 9	E 12	E 11	E 11	ENE 11	ENE 11	ENE 10	ENE 10	ENE 10	E 10	E 10	E 10	E 10	E 10	E 10	ENE 10	E 10	ENE 10
kJ	129	155	126	120	115	116	96	390	410	403	343	337	281	281	222	208	204	204	204	208	208	167	204	167
Swell 2 Height (m) Direction Period (s)	SSE 7	SSE 7	SSE 9	SSE 7	SE 7	ENE 14	E 10	SSE 8	SSE 8	SSE 8	SSE 8	SSE 8	SSE 8	SSE 8	SSE 8	SSE 8	SSE 8	SSE 8	SSE 8	SSE 8	SSE 8	SSE 7	SSE 8	SSE 7
kJ	36	30	45	16	11	64	78	22	13	13	13	13	13	12	12	12	11	6	6	6	6	5	6	5
Swell 3 Height (m) Direction Period (s)	S 8	S 8	S 7	S 8	ENE 14	SE 8	ENE 14	SE 11	SE 11	ESE 11	ESE 11	ESE 11	ESE 11	SE 11	SE 11	ESE 11	ESE 11	ESE 11	ESE 11	ESE 11	ESE 11	ESE 11	SSE 11	SSE 11
kJ	5	5	4	4	40	18	62	5	5	13	12	13	13	19	19	12	12	12	12	11	12	11	12	11
Wind waves Height (m) Direction Period (s)	SSE 7	S 7	SSW 3	S 9	SW 3	SSW 3	SW 3	SW 3	SW 4	SW 4	SW 4	SW 4	SW 4	SW 4	SSW 4	SW 4	SW 4	SW 4	SW 5	SW 5	SSW 4	SSW 4	SSW 5	SSW 5
kJ	42	37	4	40	2	7	5	6	8	9	10	8	7	11	10	8	14	15	17	10	13	13	14	15
Nearest Offshore or Glassy	Ohara Chiba	Ohara Chiba	Ohara Chiba	Ohara Chiba	Ohara Chiba	Shida Chiba	Kisami-Ohama Beach Shizuoka	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Shida Chiba	Shida Chiba	Ohara Chiba	Ohara Chiba	Ohara Chiba	Shida Chiba	Kisami-Ohama Beach Shizuoka	Shida Chiba	Ohara Chiba	Ohara Chiba	Big Ben Chiba	Ohara Chiba	Ohara Chiba	Shida Chiba	Shida Chiba	Ohara Chiba
Rating (10 max)	1	1	1	1	1	1	1	2	2	2	2	2	2	2	1	2	2	2	2	2	1	1	1	1
Distance (km)	24	24	24	24	24	30	127	30	30	30	24	24	24	30	127	30	24	24	6	24	24	30	30	24
Best forecast wave conditions in Chiba	Tsurigasaki Surfing Beach (Tokyo 2020)	Tsurigasaki Surfing Beach (Tokyo 2020)	Tsurigasaki Surfing Beach (Tokyo 2020)	Tsurigasaki Surfing Beach (Tokyo 2020)	Shida	Shida		Tsurigasaki Surfing Beach (Tokyo 2020)	Tsurigasaki Surfing Beach (Tokyo 2020)	Tsurigasaki Surfing Beach (Tokyo 2020)	Katagai	Tsurigasaki Surfing Beach (Tokyo 2020)	Tsurigasaki Surfing Beach (Tokyo 2020)	Shida		Tsurigasaki Surfing Beach (Tokyo 2020)	Tsurigasaki Surfing Beach (Tokyo 2020)	Tsurigasaki Surfing Beach (Tokyo 2020)	Tsurigasaki Surfing Beach (Tokyo 2020)	Tsurigasaki Surfing Beach (Tokyo 2020)	Tsurigasaki Surfing Beach (Tokyo 2020)	Shida	Torami	Tsurigasaki Surfing Beach (Tokyo 2020)
Rating (10 max)	1	1	1	1	1	1		2	2	2	2	2	2	2		2	2	2	2	2	1	1	1	1
Best forecast wave conditions in Japan	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Yona Bay Okinawa	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Niijima - Habushiura Izu Islands	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Katagai Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Shida Chiba	Yona Bay Okinawa	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Yona Bay Okinawa	Yona Bay Okinawa	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba
Rating (10 max)	1	1	1	1	1	1	2	2	2	2	2	2	2	2	1	2	2	2	2	2	1	1	1	1
Header Global	Papatowai New Zealand	Papatowai New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Ning Nong Point and Reef New Zealand	Ning Nong Point and Reef New Zealand	Ning Nong Point and Reef New Zealand	Last Chance New Zealand	Seconds (White Rock) New Zealand	Diners Beach New Zealand	Asu Indonesia	Papatowai New Zealand	Asu Indonesia	Aganoa Beach Samoa	Aganoa Beach Samoa	Bruces Beauties South Africa	Van Stadens Mouth South Africa	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Injidup Carpark Australia	Bancoora Australia
Rating (10 max)	7	7	6	5	5	7	6	5	5	5	5	4	5	4	4	4	4	5	5	5	7	6	5	5

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

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Ben Mondy

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Amatu 48 hour detailed Surf Forecast

How big are the waves at Amatu today (20 Jul):

Short Range Forecast

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