Mera 48 hour detailed Surf Forecast

Lat Long: 34.90° N 139.84° E

Issued: 2 am 17 Jul 2026 (local time)

Forecast update in hr min

Today's Mera sea temperature is

25.3° C

Mera 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 Mera today (17 Jul):

Morning surf: Morning surf (17 Jul, local time) - 3.5ft (1.0m), 9s period with ESE swell.
Afternoon surf: Afternoon surf (17 Jul, local time) - 2.5ft (0.8m), 9s period with E swell.
Evening surf: Evening surf (17 Jul, local time) - 2.5ft (0.8m), 8s period with E swell.

The current surf forecast for Mera at 7AM is: 0.9m 9s primary swell from a East-southeast direction and 0.6m 8s secondary swell from a Southwest direction (forecast issued at 02:00am July 17). The wind direction is predicted to be cross-shore.

Time (JST) & Date	Wave Height	Wave Period
Morning (17 Jul)	3.5ft (1.0m)	9s
Afternoon (17 Jul)	2.5ft (0.8m)	9s
Evening (17 Jul)	2.5ft (0.8m)	8s

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

	Short Range Forecast Light rain (total 3mm), mostly falling on Fri morning. Warm (max 27°C on Fri morning, min 25°C on Fri night). Wind will be generally light.
	Friday 17								Saturday 18								Sunday 19
	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)	1	0	0	0	0	0	0	0	0	1	1	0	0	0	0	0	0	0	1	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	ESE 9	ESE 9	ESE 9	ESE 9	E 9	E 9	E 8	E 8	E 8	E 9	ESE 9	E 9	E 9	E 9	E 9	E 10	E 10	E 10	E 10	E 9	E 9	E 9	E 9	E 9
Wave Graph
kJ	132	126	126	158	95	95	91	91	89	93	129	102	109	134	136	148	181	184	177	170	166	166	166	162
Wind (km/h)	S	SSE	SSE	SSE	SSE	SE	SE	SE	SE	ESE	ESE	SE	SSE	SSE	SSE	SSE	SSE	SSE	SSE	SSE	SSE	S	S	S
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-on	cross-on	cross	cross-on	cross	cross	cross	cross	cross	cross-off	cross-off	cross	cross	cross	cross	cross	cross-on	cross-on	cross	cross-on	cross-on	cross-on	cross-on	cross-on
High Tide			5:36AM1.55m					7:24PM1.44m				6:24AM1.48m				7:50PM1.42m				7:14AM1.37m				8:14PM1.40m
Low Tide		00:06AM0.84m				12:35PM0.04m				00:47AM0.76m				1:11PM0.19m				1:30AM0.69m				1:44PM0.37m


	—	4:37	—	—	—	—	—	—	—	4:39	—	—	—	—	—	—	—	4:39	—	—	—	—	—	—
	—	—	—	—	—	—	6:53	—	—	—	—	—	—	—	6:52	—	—	—	—	—	—	—	6:52	—
mm	—	—	—	2	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	27	27	26	26	27	27	26	26	25	25	25	26	26	26	26	25	25	25	25	25	26	26	26	25
Feels °C	31	32	30	28	30	29	28	28	27	28	28	29	28	28	28	28	28	28	28	27	28	28	28	27
Swell 1 Height (m) Direction Period (s)	ESE 9	ESE 9	ESE 9	ESE 9	E 9	E 9	E 8	E 8	E 8	E 9	ESE 9	E 9	E 9	E 9	E 9	E 10	E 10	E 10	E 10	E 9	E 9	E 9	E 9	E 9
kJ	132	126	126	158	95	95	91	91	89	93	129	102	109	134	136	148	181	184	177	170	166	166	166	162
Swell 2 Height (m) Direction Period (s)	SW 8	SW 8	SW 8	SW 8	SW 8	SW 7	SW 7	SW 7	SW 7	SW 7	SW 7	SSE 8	SSE 8	SSE 8	SW 7	SE 8	SE 8	SE 8	SE 8	SE 8	SW 7	SW 7	SW 7	SW 7
kJ	60	58	46	45	35	34	34	34	26	25	17	47	47	46	12	29	30	30	30	30	7	7	7	8
Swell 3 Height (m) Direction Period (s)	SE 10	SE 10	SE 10	SE 10	SE 10	SE 8	SE 10	SE 9	SE 9	SE 10	SE 10	SW 7	SW 7	SW 7	S 8	SW 7	SW 7	SW 7	SW 7	SW 7	S 8	S 8	S 8	S 8
kJ	15	15	15	15	15	18	14	14	14	14	33	17	12	12	6	12	12	12	12	7	5	5	5	5
Wind waves Height (m) Direction Period (s)	—	—	—	SSE 4	SE 4	SE 4	SE 4	SE 4	SE 4	SE 4	SSE 4	—	—	—	SE 8	—	—	—	—	—	SSE 8	SSE 8	SSE 8	SSE 8
kJ	—	—	—	10	13	12	16	11	10	7	6	—	—	—	32	—	—	—	—	—	39	37	39	23
Nearest Offshore or Glassy	Kamogawa Chiba	Keta Reef Oshima Izu Islands	Keta Reef Oshima Izu Islands	Keta Reef Oshima Izu Islands	Keta Reef Oshima Izu Islands	Golfcourse Kyu Shu	Ohara Chiba	Ohara Chiba	Ohara Chiba	Mera Chiba	Mera Chiba	Ohara Chiba	Ohara Chiba	Keta Reef Oshima Izu Islands	Keta Reef Oshima Izu Islands	Keta Reef Oshima Izu Islands	Keta Reef Oshima Izu Islands	Ohara Chiba	Keta Reef Oshima Izu Islands	Keta Reef Oshima Izu Islands	Keta Reef Oshima Izu Islands	Ohara Chiba	Ohara Chiba	Ohara Chiba
Rating (10 max)	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	1	1	1	2	2	2
Distance (km)	33	47	47	47	47	848	64	64	64	0	0	64	64	47	47	47	47	64	47	47	47	64	64	64
Best forecast wave conditions in Chiba	Kamogawa	Tsurigasaki Surfing Beach (Tokyo 2020)	Shida	Shida	Ohara		Shida	Shida	Shida	Mera	Katagai	Shida	Shida	Shida	Shida	Shida	Shida	Tsurigasaki Surfing Beach (Tokyo 2020)	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)
Rating (10 max)	2	1	1	1	1		1	1	1	1	1	1	1	1	1	2	2	2	2	2	2	2	2	2
Best forecast wave conditions in Japan	Niijima - Habushiura Izu Islands	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Omaezaki Shizuoka	Kojima Kyu Shu	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Kudaka Okinawa	Rocky Point Okinawa	Keta Reef Oshima Izu Islands	Keta Reef Oshima Izu Islands	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Keta Reef Oshima Izu Islands	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba
Rating (10 max)	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	2	1	2	2	2
Header Global	Easter Reef Australia	Easter Reef Australia	Easter Reef Australia	Easter Reef Australia	Easter Reef Australia	Kleinemonde South Africa	Otago Peninsula - Allans Beach New Zealand	Dunedin - Kuri Bush New Zealand	Dunedin - Bobs Beach New Zealand	Dunedin - Bobs Beach New Zealand	Dunedin - Bobs Beach New Zealand	Seconds (White Rock) New Zealand	Papatowai New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Papatowai New Zealand	Seconds (White Rock) New Zealand	Dunedin - Cob Cottage New Zealand	Kaka Point New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand
Rating (10 max)	5	5	6	6	6	5	5	6	7	7	6	9	9	9	8	8	6	6	6	6	6	6	6	6

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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Mera 48 hour detailed Surf Forecast

How big are the waves at Mera today (17 Jul):

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