Boa Surf Forecast

/ Timor (11 surf breaks) /

Indonesia (169 surf breaks)

Surf Forecasts:

Boa surfForecast / Timor / Indonesia

48hr Weather and Surf, issued 1 am Thursday 21 May 2026 WITA

Forecast update in hr min s Forecast update imminent

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

Today's Boa sea temperature is 28.6° C
(Which is normal for this time of year)

How big are the waves at Boa today?

The current surf forecast for Boa at 7AM is: 0.9m 16s primary swell from a Southwest direction and 0.1m 9s secondary swell from a West direction (forecast issued at 01:00am May 21). An open ocean swell of 1.5m 7s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (WITA) & Date	Wave Height	Wave Period
Morning (21 May)	3.5ft (1.0m)	16s
Afternoon (21 May)	3.5ft (1.1m)	16s
Evening (21 May)	3.5ft (1.1m)	15s

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

Updates in hr min s Forecast update imminent

	Short Range Forecast Light rain (total 8mm), mostly falling on Thu night. Warm (max 28°C on Thu morning, min 27°C on Thu morning). Mainly fresh winds.
	Thursday 21								Friday 22								Saturday 23
	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 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)	SW 16	SW 16	SW 16	SW 16	SW 16	SW 16	SW 15	SW 15	SW 15	SW 15	SW 15	SW 15	SW 15	SW 16	SW 16	SW 16	SW 15	SW 15	SW 15	SW 15	SW 15	SW 15	SW 14	SW 14
Wave Graph
kJ	437	432	432	567	560	546	459	499	492	566	581	589	605	620	701	612	566	472	472	606	606	606	466	459
Wind (km/h)	ENE	E	E	E	E	E	E	ESE	E	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	SE	SE	SE	ESE	ESE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross	cross	cross	cross	cross	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on
High Tide	1:30AM2.47m				1:13PM3.13m					2:21AM2.37m				2:03PM2.84m				3:21AM2.30m				3:04PM2.51m
Low Tide			7:00AM0.88m					8:01PM0.28m			7:52AM1.04m					8:51PM0.54m				8:56AM1.21m				9:49PM0.79m


	—	5:56	—	—	—	—	—	—	—	5:56	—	—	—	—	—	—	—	5:58	—	—	—	—	—	—
	—	—	—	—	—	5:31	—	—	—	—	—	—	—	5:31	—	—	—	—	—	—	—	5:31	—	—
mm	—	—	1	1	—	—	—	1	2	2	1	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	27	27	27	28	28	27	27	27	27	27	27	28	28	27	27	27	27	27	27	27	27	27	27	27
Feels °C	28	28	27	28	28	27	27	27	27	27	26	27	28	27	27	27	27	27	27	27	26	26	26	26
Swell 1 Height (m) Direction Period (s)	SW 16	SW 16	SW 16	SW 16	SW 16	SW 16	SW 15	SW 15	SW 15	SW 15	SW 15	SW 15	SW 15	SW 16	SW 16	SW 16	SW 15	SW 15	SW 15	SW 15	SW 15	SW 15	SW 14	SW 14
kJ	437	432	432	567	560	546	459	499	492	566	581	589	605	620	701	612	566	472	472	606	606	606	466	459
Swell 2 Height (m) Direction Period (s)	W 9	W 9	W 9	W 9	W 9	W 9	W 9	W 9	W 9	W 9	W 9	W 9	W 9	W 9	—	—	W 16	W 16	W 16	W 16	S 7	SSW 7	SSW 6	SSW 6
kJ	2	2	2	1	1	1	2	2	2	2	2	2	2	2	—	—	5	5	5	5	1	4	4	7
Swell 3 Height (m) Direction Period (s)	—	W 9	—	—	—	—	—	—	—	W 16	—	—	—	—	—	—	—	—	—	W 16	—	—	—	W 15
kJ	—	2	—	—	—	—	—	—	—	5	—	—	—	—	—	—	—	—	—	5	—	—	—	4
Wind waves Height (m) Direction Period (s)	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	E 6	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	E 7	E 7	ESE 7	ESE 7	ESE 5	ESE 5	ESE 5	ESE 5
kJ	273	231	218	173	192	187	181	194	175	187	187	168	168	161	143	121	127	112	117	94	52	50	56	57
Nearest Offshore or Glassy	Millers Rights Sumba	T-Land Timor	Millers Rights Sumba	Ndao Timor	Ndao Timor	Millers Rights Sumba	Savu Right Timor	Savu Left Timor	Savu Left Timor	Millers Rights Sumba	Millers Rights Sumba	Wanjapu Sumba	Savu Left Timor	Savu Left Timor	Savu Left Timor	Savu Left Timor	Savu Left Timor	Savu Left Timor	Savu Left Timor	Savu Left Timor	Savu Left Timor	Savu Left Timor	Savu Left Timor	Savu Left Timor
Rating (10 max)	3	2	3	2	2	3	2	2	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	2
Distance (km)	336	5	336	27	27	336	131	125	125	336	336	443	125	125	125	125	125	125	125	125	125	125	125	125
Best forecast wave conditions in Timor		T-Land		Ndao	Ndao		Savu Right	Savu Right	Savu Left				Savu Right	Savu Right	Savu Right	Savu Right	Savu Right	Savu Right	Savu Right	Savu Right	Savu Right	Savu Right	Savu Right	Savu Right
Rating (10 max)		2		2	2		2	2	3				3	3	3	3	3	3	3	3	3	3	3	2
Best forecast wave conditions in Indonesia	Jimmys Sumatra - Mainland	Rifles (Kandui Right) Mentawi Islands	Keusik Luhur Java - Central	Keusik Luhur Java - Central	Rifles (Kandui Right) Mentawi Islands	Rifles (Kandui Right) Mentawi Islands	Balimbing Sumatra - Mainland	Karang Nyimbor Sumatra - Mainland	Jimmys Sumatra - Mainland	Keusik Luhur Java - Central	Keusik Luhur Java - Central	Jimmys Sumatra - Mainland	Rifles (Kandui Right) Mentawi Islands	Jimmys Sumatra - Mainland	Jimmys Sumatra - Mainland	Keusik Luhur Java - Central	Jimmys Sumatra - Mainland	Jimmys Sumatra - Mainland	Thailand Simeulue Island	Thailand Simeulue Island	Rifles (Kandui Right) Mentawi Islands	Impossibles Bali - The Bukit	Rifles (Kandui Right) Mentawi Islands	Jimmys Sumatra - Mainland
Rating (10 max)	3	3	4	4	3	3	4	4	4	4	4	3	3	4	4	4	4	3	3	3	3	3	3	3
Header Global	Trial Harbour Australia	Hanga Poukura Chile	Mata Veri Chile	Mata Veri Chile	Lambe Lambe Brazil	Lambe Lambe Brazil	Tahai Chile	Tahai Chile	Pauba Brazil	Otago Peninsula - Allans Beach New Zealand	Easter Reef Australia	Itaúna Brazil	Trial Harbour Australia	Trial Harbour Australia	Trial Harbour Australia	Trial Harbour Australia	Currumbin Point Australia	Dunedin - Bobs Beach New Zealand	Dunedin - Bobs Beach New Zealand	Nugget Point New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand
Rating (10 max)	5	5	5	5	5	5	5	5	5	4	4	5	7	8	7	6	5	5	5	5	6	8	9	8

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

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