Boat Basin Lefts Surf Break

Lat Long: 13.48° N 144.75° E

GUAM

Boat Basin Lefts 48 hour detailed Surf Forecast

Issued: 3 pm 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Boat Basin Lefts sea temperature is
28.5° C
0.9° 

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


How big are the waves at Boat Basin Lefts today (19 Jul):

  • Afternoon surf: Afternoon surf (19 Jul, local time) - 1.5ft (0.5m), 9s period with E swell.
  • Evening surf: Evening surf (19 Jul, local time) - 1.5ft (0.5m), 9s period with E swell.

The current surf forecast for Boat Basin Lefts at 12AM is: 0.5m 9s primary swell from a East direction (forecast issued at 03:00pm July 18). An open ocean swell of 0.7m 6s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (ChST) & DateWave HeightWave Period
Morning (19 Jul)--
Afternoon (19 Jul)1.5ft (0.5m)9s
Evening (19 Jul)1.5ft (0.5m)9s

Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 7mm), mostly falling on Sat night. Warm (max 29°C on Sat afternoon, min 27°C on Sat night). Wind will be generally light.

Sat
18
Sunday
19
Monday
20
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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)
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.4
ENE
9
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
9
0.5
E
9
0.5
E
9
Wave Graph
Metric surfscale
Energy kJ
42
42
42
42
41
27
41
41
41
41
41
41
42
44
46
46
46
44
43
42
Wind (km/h)
15
WSW
20
WSW
15
WSW
15
SW
10
SW
10
WSW
5
SSW
10
SSW
10
SSW
10
SW
10
SSW
10
S
5
SSW
0
S
5
ESE
10
SE
15
SE
15
SE
15
SE
10
SE
Wind State
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
glassy
cross-off
off
off
off
off
off
High Tide
11:30PM0.93m
10:51AM0.78m
11:58PM0.92m
12:04PM0.72m
Low Tide
4:34PM0.19m
5:36AM0.49m
5:13PM0.31m
6:32AM0.43m
5:50PM0.42m
clear
thunderstorm
thunderstorm
clear
part cloud
part cloud
thunderstorm
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:52
6:51
 mm
1
1
2
2
1
Temp °C
29
29
28
28
27
27
27
28
29
29
28
27
27
27
27
28
29
29
27
27
Feels °C
31
31
31
32
31
31
31
32
32
32
32
31
31
32
32
32
31
31
30
30
  • 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 Boat Basin Lefts 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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