Greenhill Surf Break

Lat Long: 41.36° N 71.61° W

Greenhill 48 hour detailed Surf Forecast

Issued: 1 pm 21 Jul 2026 (local time)

Forecast update in  hr  min

Today's Greenhill sea temperature is
19.7° C
1.5° 

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


How big are the waves at Greenhill today (21 Jul):

  • Morning surf: Morning surf (21 Jul, local time) - 2.5ft (0.8m), 7s period with S swell.
  • Afternoon surf: Afternoon surf (21 Jul, local time) - 4.5ft (1.3m), 5s period with S swell.
  • Evening surf: Evening surf (21 Jul, local time) - 5.5ft (1.7m), 6s period with S swell.

The current surf forecast for Greenhill at 5PM is: 1.5m 6s primary swell from a South direction and 0.1m 11s secondary swell from a Southeast direction (forecast issued at 01:00pm July 21). The wind direction is predicted to be onshore.

Time (EDT) & DateWave HeightWave Period
Morning (21 Jul)2.5ft (0.8m)7s
Afternoon (21 Jul)4.5ft (1.3m)5s
Evening (21 Jul)5.5ft (1.7m)6s

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


Short Range Forecast

Moderate rain (total 18mm), heaviest on Tue afternoon. Warm (max 25°C on Wed afternoon, min 16°C on Wed night). Winds decreasing (fresh winds from the WSW on Tue night, calm by Thu night).

Tue
21
Wednesday
22
Thursday
23
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
2
1
2
2
2
2
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
S
7
1.2
S
5
1.5
S
6
1.6
S
6
1.8
S
7
1.6
S
7
2
SSW
7
2.3
SSW
8
2
S
8
2.1
S
9
2.1
S
9
2.4
SSW
9
1.9
S
9
1.8
S
9
1.7
S
9
1.6
S
9
1.4
S
8
1.3
S
8
1
S
8
1
S
8
0.9
SSW
8
Wave Graph
Metric surfscale
Energy kJ
26
73
160
206
293
229
392
636
513
663
726
897
554
493
449
389
271
212
127
134
109
Wind (km/h)
20
SSE
25
SSE
20
S
25
S
30
SSW
35
WSW
25
SW
30
SW
25
SW
30
SW
25
SSW
15
WSW
15
NNW
15
NNW
15
N
15
NNE
10
NE
5
SE
15
S
10
SSE
5
SSE
Wind State
cross-on
cross-on
on
on
on
cross-on
cross-on
on
cross-on
on
on
cross-on
cross-off
cross-off
cross-off
off
off
cross
cross-on
cross-on
glassy
High Tide
2:21PM1.16m
2:33AM0.95m
3:15PM1.13m
3:27AM0.90m
4:10PM1.12m
Low Tide
8:43PM0.34m
8:38AM0.28m
9:41PM0.38m
9:29AM0.31m
10:39PM0.39m
part cloud
light rain
mod rain
thunderstorm
light rain
light rain
cloud
part cloud
clear
clear
clear
clear
cloud
part cloud
cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:14
8:13
8:12
 mm
1
8
4
4
1
Temp °C
22
22
22
22
21
22
21
22
23
25
25
25
21
18
16
18
22
23
21
20
19
Feels °C
20
20
22
22
19
19
19
20
22
23
24
25
18
15
14
15
19
21
18
19
19
  • 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
How to use the Wavefinder 

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