Greenhill surf break

Greenhill surfForecast / Rhode Island / USA

information circle48hr Weather and Surf, issued 1 am Thursday 21 May 2026 EDT
Forecast update in hr  min  s Forecast update imminent
Greenhill surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Greenhill sea temperature is
12.1° C
(Which is slightly warmer than usual)

How big are the waves at Greenhill today?

The current surf forecast for Greenhill at 9AM is: 0.8m 6s primary swell from a South-southwest direction and 0.3m 9s secondary swell from a Southeast direction (forecast issued at 01:00am May 21). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (EDT) & DateWave HeightWave Period
Morning (21 May)2.5ft (0.8m)6s
Afternoon (21 May)2ft (0.6m)6s
Evening (21 May)2ft (0.6m)6s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 17°C on Thu morning, min 11°C on Thu night). Wind will be generally light.

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)
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1
S
6
0.9
SSW
6
0.8
SSW
6
0.8
S
6
0.7
S
6
0.6
S
6
0.6
S
6
0.5
S
6
0.5
S
6
0.5
S
6
0.5
S
6
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
10
0.5
SE
6
0.5
SE
6
0.5
SE
6
0.5
SE
6
0.4
SE
6
0.4
SSE
6
0.9
ESE
5
1
SE
6
1.1
SE
7
Wave Graph
Metric surfscale
Energy kJ
86
68
55
51
39
28
28
20
18
18
17
13
14
14
14
15
16
17
17
10
17
42
78
111
Wind (km/h)
15
NNW
10
NNW
15
NNE
20
NNE
10
ENE
10
SE
10
SE
10
SE
5
ENE
10
NE
20
NE
20
E
20
ESE
20
ESE
20
ESE
10
ESE
10
E
10
NE
15
ENE
20
E
20
E
15
ESE
20
E
20
E
cross-off
cross-off
off
off
cross-off
cross
cross
cross
cross-off
off
cross-off
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
11:58PM1.36m
12:32PM1.09m
1:01AM1.26m
1:39PM1.09m
2:04AM1.18m
2:45PM1.11m
Low Tide
6:28AM0.14m
6:34PM0.18m
7:29AM0.18m
7:44PM0.23m
8:28AM0.20m
8:55PM0.27m
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:22
5:20
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:02
8:04
8:05
Temp °C
17
17
17
14
12
12
11
11
12
12
11
14
14
13
12
12
11
11
11
12
13
12
12
11
13
14
13
10
9
10
9
9
10
9
6
9
9
8
7
9
8
8
7
7
8
7
7
6
Swell 1
Height (m)
Direction
Period (s)
1
S
6
0.9
SSW
6
0.8
SSW
6
0.8
S
6
0.7
S
6
0.6
S
6
0.6
S
6
0.5
S
6
0.5
S
6
0.5
S
6
0.5
S
6
0.4
S
6
0.3
S
6
0.3
SE
9
0.4
SSE
6
0.5
SE
6
0.5
SE
6
0.5
SE
6
0.5
SE
6
0.4
SE
6
0.4
SSE
6
0.1
S
13
0.1
S
13
0.1
S
12
Energy kJ
86
68
55
51
39
28
28
20
18
18
17
10
6
14
12
15
16
17
17
10
17
3
3
3
Swell 2
Height (m)
Direction
Period (s)
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.4
E
5
0.3
ESE
4
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.2
SSW
6
0.3
SE
10
0.2
SSE
10
0.2
SSE
10
0.3
SE
10
0.1
SE
10
0.1
SE
10
0.1
SE
10
0.1
SE
13
0.1
S
12
Energy kJ
21
21
21
13
13
13
7
3
12
13
13
13
14
3
14
9
9
14
4
4
4
6
3
Swell 3
Height (m)
Direction
Period (s)
0.1
S
15
0.1
S
15
0.1
S
14
0.1
S
14
0.1
S
14
0.1
S
14
0.3
SE
9
0.3
SE
9
0.2
E
4
0.1
S
14
0.1
S
13
0.1
S
13
0.1
S
13
0.1
SE
13
0.1
S
6
0.1
SE
13
0.1
SE
13
0.1
S
13
0.1
S
6
0.1
S
13
0.1
S
13
Energy kJ
4
4
4
4
4
4
13
12
1
4
3
3
3
7
1
7
7
4
1
3
4
Wind waves
Height (m)
Direction
Period (s)
0.3
NNE
2
0.5
NE
3
0.6
E
4
0.6
E
5
0.6
E
5
0.3
ENE
2
0.6
E
4
0.9
ESE
4
0.9
ESE
5
0.7
E
4
0.4
ENE
4
0.2
ENE
4
0.4
ENE
3
0.7
E
4
0.7
ESE
4
0.9
ESE
5
1
SE
6
1.1
SE
7
Energy kJ
1
5
13
16
17
1
9
31
39
17
5
1
4
13
19
42
78
111
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
1
1
1
1
1
Distance (km)
0
0
0
0
6
164
632
663
164
700
708
691
708
700
712
712
605
605
722
725
605
505
1112
473
Best forecast wave conditions in Rhode Island
Rating
(10 max)
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
1
3
3
3
3
1
1
2
2
2
2
2
3
1
1
2
2
2
2
2
1
1
2
2
Header Global
Rating
(10 max)
5
5
5
5
5
5
4
5
7
7
7
6
5
7
5
7
7
8
8
7
6
7
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)
Map placeholder

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