K38 and 39 Surf Break

Lat Long: 41.37° N 71.50° W

K38 and 39 48 hour detailed Surf Forecast

Issued: 1 pm 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's K38 and 39 sea temperature is
20.6°C
0.9° 

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 (13 Sep):

  • Morning surf: Morning surf (13 Sep, local time) - 1.5ft (0.4m), 10s period with SE swell.
  • Afternoon surf: Afternoon surf (13 Sep, local time) - 1.5ft (0.4m), 9s period with SE swell.
  • Evening surf: Evening surf (13 Sep, local time) - 2.5ft (0.8m), 6s period with S swell.

The current surf forecast for K38 and 39 at 9PM is: 0.8m 6s primary swell from a South direction and 0.4m 9s secondary swell from a Southeast direction (forecast issued at 01:00pm September 13). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (13 Sep)1.5ft (0.4m)10s
Afternoon (13 Sep)1.5ft (0.4m)9s
Evening (13 Sep)2.5ft (0.8m)6s

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


Short Range Forecast

Heavy rain (total 52mm), heaviest during Sun afternoon. Warm (max 24°C on Mon afternoon, min 14°C on Mon night). Wind will be generally light.

Sun
13
Monday
14
Tuesday
15
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
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
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SE
10
0.4
SE
9
0.8
S
5
0.8
S
5
0.8
S
6
0.4
SE
9
0.6
SSE
6
0.6
SSE
6
0.4
SSE
6
0.4
SSW
6
0.4
SE
8
0.4
SE
7
0.4
SE
8
0.4
SE
8
0.3
SE
8
0.3
SE
8
0.2
ESE
9
0.2
SSE
7
0.2
S
7
0.2
S
7
0.3
ESE
5
Wave Graph
Metric surfscale
Energy kJ
23
23
33
37
41
23
26
26
14
15
15
18
15
15
9
9
8
4
4
4
4
Wind (km/h)
20
SE
15
SW
10
N
5
NW
10
WSW
15
WSW
15
NW
25
NW
25
NNW
15
NNW
15
N
20
N
20
N
15
NNE
15
NNE
20
NE
10
ENE
10
ESE
10
SSE
10
SSE
10
SSE
Wind State
cross
on
cross-off
glassy
cross-on
on
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross
cross-on
cross
High Tide
9:45AM1.19m
10:03PM1.02m
10:27AM1.13m
10:45PM0.94m
11:10AM1.06m
Low Tide
4:04PM-0.04m
4:03AM-0.04m
4:43PM0.03m
4:34AM0.02m
5:20PM0.12m
heavy rain
heavy rain
rain showers
clear
clear
clear
clear
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:59
6:57
6:55
 mm
12
45
7
Temp °C
21
21
21
20
21
21
21
18
21
23
24
20
17
16
14
14
16
17
17
16
16
Feels °C
21
22
23
22
23
22
22
15
16
19
20
16
13
12
10
11
14
15
16
15
15
  • 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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