Costellos Surf Break

Lat Long: 42.95° N 70.78° W

Costellos 48 hour detailed Surf Forecast

Issued: 1 am 21 Jul 2026 (local time)

Forecast update in  hr  min

Today's Costellos sea temperature is
16.3° C
2.3° 

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 (21 Jul):

  • Morning surf: Morning surf (21 Jul, local time) - 2ft (0.6m), 4s period with SSE swell.
  • Afternoon surf: Afternoon surf (21 Jul, local time) - 4.5ft (1.3m), 5s period with SSE swell.
  • Evening surf: Evening surf (21 Jul, local time) - 4.5ft (1.4m), 6s period with SSE swell.

The current surf forecast for Costellos at 5AM is: 0.6m 4s primary swell from a South direction and 0.1m 8s secondary swell from a Southeast direction, 0.1m 7s secondary swell from a South direction (forecast issued at 01:00am July 21). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (21 Jul)2ft (0.6m)4s
Afternoon (21 Jul)4.5ft (1.3m)5s
Evening (21 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 Tue night. Warm (max 27°C on Wed afternoon, min 15°C on Wed night). Winds decreasing (fresh winds from the SSE on Tue afternoon, light winds from the SW by Thu night).

Tuesday
21
Wednesday
22
Thursday
23
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
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
1
2
2
1
2
0
2
1
2
0
1
1
0
0
1
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)
0.8
S
5
0.6
S
4
0.5
S
4
0.7
SSE
4
1.3
SSE
5
1.5
SSE
5
1.4
SSE
6
1.4
SE
6
1.6
SE
6
1.5
SSE
7
1.5
SSE
7
1.3
SSE
7
1.4
SSE
8
1.6
SSE
8
1.3
SSE
7
1.3
SSE
7
0.7
SSE
10
1
SSE
10
0.9
SE
9
0.9
SE
9
0.9
SE
8
0.8
SE
8
0.8
SE
8
0.8
SE
8
Wave Graph
Metric surfscale
Energy kJ
27
13
9
15
68
125
119
147
201
198
189
141
219
296
159
163
80
200
128
110
100
78
71
67
Wind (km/h)
10
SSW
10
SSW
10
S
20
SSE
30
SSE
30
SSE
25
SSE
20
S
20
S
20
SSW
15
SSW
15
SW
15
SW
15
WSW
20
WNW
15
W
15
W
10
W
20
WNW
15
NW
5
NNW
15
SE
15
S
10
SSW
Wind State
cross-off
cross-off
cross
cross
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-on
cross
cross-off
High Tide
5:15AM2.98m
5:40PM3.14m
6:12AM2.81m
6:32PM3.05m
7:10AM2.69m
7:25PM3.00m
Low Tide
11:06PM0.64m
11:21AM0.76m
00:03AM0.74m
12:13PM0.92m
1:00AM0.81m
1:07PM1.04m
clear
part cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
part cloud
part cloud
part cloud
thunderstorm
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:22
5:22
5:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:15
8:14
8:14
 mm
5
4
3
2
Temp °C
18
17
18
22
23
21
19
21
21
21
21
25
26
27
24
20
16
15
17
21
23
22
20
19
Feels °C
16
16
17
20
18
18
17
21
21
21
22
25
26
26
21
18
14
13
13
17
20
18
17
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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