Green island Surf Forecast

/ South (6 surf breaks) /

Taiwan (13 surf breaks)

Surf Forecasts:

Green island surfForecast / South / Taiwan

48hr Weather and Surf, issued 1 am Tuesday 09 Sep 2025 CST

Forecast update in hr min s Forecast update imminent

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

Today's Green island sea temperature is 29.4° C
(Which is slightly warmer than usual)

How big are the waves at Green island today?

The current surf forecast for Green island at 6AM is: 1.1m 9s primary swell from a Southwest direction and 0.5m 10s secondary swell from a East direction (forecast issued at 01:00am September 09). The wind direction is predicted to be cross-onshore.

Time (CST) & Date	Wave Height	Wave Period
Morning (09 Sep)	3.5ft (1.1m)	8s
Afternoon (09 Sep)	3.5ft (1.0m)	8s
Evening (09 Sep)	3ft (0.9m)	8s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

		Tuesday 09								Wednesday 10								Thursday 11
	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	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	E	E	E	E	E	E	E	E	E	E	E
Period(s) (?)	9	9	9	8	8	8	8	8	8	8	8	7	7	10	10	10	10	10	10	10	10	10	10	10
Wave Graph (?)
Energy (?)	358	285	249	235	212	190	181	156	137	150	131	129	134	124	121	116	107	98	98	98	76	70	53	41
Wind (km/h)	SSW	SW	SW	SW	SW	SW	SSW	SSW	SSW	SSW	SSW	SSW	S	S	SSE	SE	SE	SE	SE	SE	SE	ESE	ESE	ESE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	on	cross- on	on	on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	glass	cross- on	cross	cross
High Tide / height (m)				6:44AM 1.61				7:06PM 1.46				7:25AM 1.53				7:37PM 1.51					8:09AM 1.40
Low Tide / height (m)		12:29AM 0.23				1:00PM 0.16				1:10AM 0.17				1:31PM 0.25				1:55AM 0.15					2:01PM 0.36

		Tuesday 09								Wednesday 10								Thursday 11
Sunrise	-	-	-	5:37	-	-	-	-	-	-	-	5:39	-	-	-	-	-	-	-	5:39	-	-	-	-
Sunset	-	-	-	-	-	-	6:02	-	-	-	-	-	-	-	6:01	-	-	-	-	-	-	-	6:00	-

Rain (mm)	1	2	-	-	-	-	-	1	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	29	28	28	28	29	29	29	29	29	28	28	28	28	28	29	29	28	28	28	28	28	28	28	28
Feels °C (?)	31	29	30	30	31	30	31	31	31	29	30	31	31	31	33	32	31	32	32	32	33	32	32	32

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 South

Wind Update Wind reports 3 km away suggest it is still onshore at Green island (fresh winds from the S at Lan YU). 0.5m 3s local chop from the S with a 0.3m 6s windswell from the SE and a 0.2m 7s swell from the E. 3 swells combining to make bigger set waves.
1 hour 39 minutes ago Green island

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1 h 39 min ago

32 km/h

Onshore

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