Costellos Surf Break

Lat Long: 42.95° N 70.78° W

Costellos 48 hour detailed Surf Forecast

Issued: 1 pm 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 (1.1m), 4s period with SSE 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 4PM is: 1.2m 5s primary swell from a South-southeast direction and 0.2m 13s secondary swell from a East-southeast direction, 0.1m 8s secondary swell from a East direction (forecast issued at 01:00pm 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 (1.1m)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 14mm), heaviest on Sat afternoon. Warm (max 27°C on Sat afternoon, min 17°C on Sun night). Winds decreasing (fresh winds from the SSW on Sat afternoon, light winds from the S by Mon afternoon).

Sat
18
Sunday
19
Monday
20
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
1
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
Wave
Height (m)
Direction
Period (s)
0.2
ESE
13
1
SSE
4
1.4
SSE
5
1.5
S
6
1.3
S
6
1.6
S
6
1.3
SSE
7
0.8
SSE
7
0.5
SSE
6
0.4
SSE
6
0.4
SE
6
0.4
SE
7
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.2
SSE
8
0.3
SE
8
0.6
SSE
3
0.8
SSE
4
1.1
S
5
Wave Graph
Metric surfscale
Energy kJ
18
36
113
151
122
200
145
58
23
16
10
14
14
16
15
14
6
11
8
21
53
Wind (km/h)
15
S
20
SSW
30
SSW
30
SSW
20
SW
20
WSW
20
W
25
WNW
25
NW
20
NW
20
NW
10
NW
10
WNW
15
WNW
15
W
15
WNW
10
WNW
10
S
20
S
25
S
20
SSW
Wind State
cross
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
cross
cross
cross-off
cross-off
High Tide
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
part cloud
cloud
mod rain
light rain
light rain
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:17
8:16
8:15
 mm
6
2
4
2
Temp °C
26
27
21
21
21
22
20
19
22
24
26
23
20
18
17
19
25
27
26
24
21
Feels °C
24
25
19
19
21
22
19
15
17
19
21
20
17
14
14
16
22
25
22
20
17
  • 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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