Point Forecast: 5NM SE Nantucket MA  41.22N 70.04W (Elev. 0 ft)	Last Update: 9:35 am EDT May 20, 2026

[show menu]

Date	05/20															05/21
Hour (EDT)	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08
Surface Wind (mph)	15	15	15	16	16	17	17	17	16	15	14	13	12	11	10	9	9	9	9	9	10	11	12	12
Wind Dir	WSW	WSW	WSW	WSW	WSW	SW	SW	SW	WSW	WSW	WSW	WSW	WSW	W	W	W	WNW	NNW	N	N	N	NNE	NNE	NNE
Gust			21	22	23	24	24	23	23	22	21
Significant Wave Height (ft)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	3	3	3	3	3	3	3	3	3
Wave Direction (°)
Swell Height (ft)
Swell Dir
Swell Period (sec)	15	15	15	15	15	15	15	15	15	15	15	14	13	12	11	10	8	7	6	6	6	6	6	6
Swell 2 Period (sec)	7	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	7
Wind Wave Height (ft)	4	4	4	4	4	4	5	4	4	4	4	4	4	4	4	4	3	3	3	3	3	3	3	3
Date																05/22
Hour (EDT)	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08
Surface Wind (mph)	13	13	13	12	12	11	10	9	8	6	5	4	4	3	2	1	1	2	3	5	7	8	9	10
Wind Dir	NNE	NNE	NNE	NNE	NE	NE	NE	NE	ENE	ENE	E	E	ESE	SE	SSE	S	W	NW	NNW	N	N	NNE	NE	NE
Gust
Significant Wave Height (ft)	3	3	3	3	3	3	3	3	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2
Wave Direction (°)
Swell Height (ft)
Swell Dir
Swell Period (sec)	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6
Swell 2 Period (sec)	7	7	7	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6
Wind Wave Height (ft)	3	3	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	1	1	1	1	1

International System of Units Forecast Discussion Marine Point Forecast Hourly Weather Graph National Marine Forecasts Tide Information Graphical Hazardous Weather Outlook Regional Weather Conditions Past Weather Information Interactive Forecast Map Weather Story Home