Costellos Surf Break

Lat Long: 42.95° N 70.78° W

Costellos 48 hour detailed Surf Forecast

Issued: 7 am 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Costellos sea temperature is
18.5° C
0.1° 

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


How big are the waves at Costellos today (18 Jul):

  • Morning surf: Morning surf (18 Jul, local time) - 0.5ft (0.2m), 14s period with ESE swell.
  • Afternoon surf: Afternoon surf (18 Jul, local time) - 3.5ft (1.0m), 4s period with S swell.
  • Evening surf: Evening surf (18 Jul, local time) - 4.5ft (1.4m), 6s period with S swell.

The current surf forecast for Costellos at 10AM is: 0.2m 14s primary swell from a East-southeast direction and 0.1m 8s secondary swell from a Southeast direction, 0.4m 3s secondary swell from a South direction (forecast issued at 07:00am July 18). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (18 Jul)0.5ft (0.2m)14s
Afternoon (18 Jul)3.5ft (1.0m)4s
Evening (18 Jul)4.5ft (1.4m)6s

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


Short Range Forecast

Moderate rain (total 17mm), heaviest on Sat night. Warm (max 28°C on Sat afternoon, min 17°C on Sun night). Wind will be generally light.

Saturday
18
Sunday
19
Monday
20
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)
0
0
0
0
0
0
0
0
1
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
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
SE
14
0.2
ESE
14
0.2
ESE
13
0.9
SSE
4
1.3
S
5
1.5
S
6
1.3
SSE
6
1.2
S
6
1
SSE
6
0.9
SSE
6
0.5
SSE
6
0.4
SSE
6
0.4
SE
6
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.6
SSE
3
0.8
SSE
4
1.1
S
5
Wave Graph
Metric surfscale
Energy kJ
8
18
18
25
85
146
126
104
80
59
23
15
10
14
15
15
15
15
16
18
8
22
57
Wind (km/h)
5
SSE
10
SW
15
S
20
SSW
25
SSW
25
SW
25
SW
25
SW
20
W
25
WNW
25
NW
20
NW
15
NW
15
NW
15
WNW
15
W
15
W
10
W
10
W
10
S
20
S
20
S
20
SSW
Wind State
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross
cross
cross-off
High Tide
2:33AM3.64m
3:07PM3.46m
3:26AM3.43m
3:57PM3.37m
4:20AM3.20m
4:48PM3.25m
Low Tide
8:52AM0.15m
9:15PM0.40m
9:41AM0.34m
10:10PM0.51m
10:31AM0.55m
cloud
part cloud
part cloud
cloud
light rain
light rain
light rain
mod rain
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:18
5:20
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:17
8:16
8:15
 mm
1
2
3
10
1
Temp °C
20
19
26
28
20
21
21
21
21
18
22
24
26
23
20
18
17
19
25
26
26
23
21
Feels °C
19
18
24
25
18
19
20
20
20
14
17
19
22
20
17
15
13
16
23
24
22
19
18
  • 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 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Costellos surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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