K38 and 39 Surf Break

Lat Long: 41.37° N 71.50° W

K38 and 39 48 hour detailed Surf Forecast

Issued: 7 pm 17 Sep 2026 (local time)

Forecast update in  hr  min

Today's K38 and 39 sea temperature is
20.3°C
1.0° 

K38 and 39 surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at K38 and 39 today (18 Sep):

  • Morning surf: Morning surf (18 Sep, local time) - 3ft (0.9m), 5s period with SW swell.
  • Afternoon surf: Afternoon surf (18 Sep, local time) - 1.5ft (0.5m), 5s period with SSW swell.
  • Evening surf: Evening surf (18 Sep, local time) - 1.5ft (0.4m), 5s period with SSW swell.

The current surf forecast for K38 and 39 at 4AM is: 0.9m 4s primary swell from a Southwest direction and 0.2m 7s secondary swell from a East-southeast direction, 0.1m 12s secondary swell from a Southeast direction (forecast issued at 07:00pm September 17). The wind direction is predicted to be onshore.

Time (EDT) & DateWave HeightWave Period
Morning (18 Sep)3ft (0.9m)5s
Afternoon (18 Sep)1.5ft (0.5m)5s
Evening (18 Sep)1.5ft (0.4m)5s

Table - waves today at K38 and 39. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 3mm), mostly falling on Thu night. Warm (max 26°C on Fri afternoon, min 13°C on Sat morning). Wind will be generally light.

Thu
17
Friday
18
Saturday
19
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
ESE
7
0.2
ESE
7
0.6
SSW
4
0.8
SSW
4
0.9
SW
5
0.9
SW
5
0.7
SSW
5
0.5
SSW
5
0.5
SSW
5
0.4
SSW
5
0.4
SSW
5
0.3
SSW
5
0.3
SSW
5
0.1
SE
12
0.1
SE
12
0.3
SE
8
0.4
SE
8
0.4
SE
8
0.2
ESE
7
Wave Graph
Metric surfscale
Energy kJ
6
6
8
20
31
33
22
14
14
8
8
4
4
5
5
10
16
15
5
Wind (km/h)
20
SSW
15
SSW
20
SSW
25
SW
15
WSW
10
W
10
N
5
SW
5
SW
15
NNE
20
NNE
25
NNE
20
NNE
20
NE
20
NE
15
ENE
20
E
15
E
15
ESE
Wind State
cross-on
cross-on
on
on
on
cross-on
cross-off
glassy
glassy
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
High Tide
1:04AM0.71m
1:39PM0.85m
2:05AM0.67m
2:40PM0.82m
Low Tide
6:47PM0.27m
6:19AM0.22m
8:02PM0.31m
7:17AM0.27m
9:48PM0.30m
part cloud
part cloud
part cloud
cloud
rain showers
light rain
clear
cloud
cloud
cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:28
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:50
6:49
 mm
1
1
Temp °C
22
21
21
21
21
21
24
26
26
24
19
16
14
13
14
17
16
14
14
Feels °C
21
21
20
19
21
23
25
28
27
23
14
10
9
8
9
13
11
10
11
  • 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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