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 16 Sep 2026 (local time)

Forecast update in  hr  min

Today's Boat Basin Lefts sea temperature is
30.0°C
0.7° 

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 (16 Sep):

  • Afternoon surf: Afternoon surf (16 Sep, local time) - 3.5ft (1.1m), 9s period with NE swell.
  • Evening surf: Evening surf (16 Sep, local time) - 3.5ft (1.1m), 9s period with NE swell.

The current surf forecast for Boat Basin Lefts at 8PM is: 1.1m 9s primary swell from a Northeast direction and 0.7m 7s secondary swell from a North direction (forecast issued at 03:00pm September 16). An open ocean swell of 0.8m 8s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (ChST) & DateWave HeightWave Period
Morning (16 Sep)--
Afternoon (16 Sep)3.5ft (1.1m)9s
Evening (16 Sep)3.5ft (1.1m)9s

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


Short Range Forecast

Heavy rain (total 20mm), heaviest during Wed night. Warm (max 30°C on Wed afternoon, min 28°C on Wed afternoon). Wind will be generally light.

Wed
16
Thursday
17
Friday
18
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
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)
1.1
NE
9
1.2
NE
9
1.1
NE
9
1.1
NE
9
1
NE
9
1.1
NE
8
1.1
NE
8
1.1
NE
8
0.9
NNE
8
0.9
NNE
8
0.9
NNE
8
0.8
NNE
8
0.8
NNE
8
0.8
NNE
8
0.6
N
10
0.8
NNE
9
0.8
NNE
9
0.6
NNE
9
0.6
NNE
9
0.6
NNE
9
Wave Graph
Metric surfscale
Energy kJ
176
241
190
186
152
180
158
158
117
105
105
90
82
80
70
88
92
64
65
58
Wind (km/h)
20
NW
20
WNW
20
WNW
15
W
15
W
20
W
20
W
20
W
25
W
20
W
15
W
20
W
20
W
15
W
15
W
20
WSW
25
WSW
25
W
20
WSW
20
WSW
Wind State
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross-on
cross-on
High Tide
11:47AM0.78m
10:11PM0.83m
12:54PM0.75m
10:37PM0.81m
2:16PM0.73m
Low Tide
4:44PM0.60m
5:34AM0.23m
5:21PM0.64m
6:23AM0.24m
6:07PM0.67m
clear
clear
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
clear
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:21
6:20
 mm
2
3
4
1
1
1
1
2
1
1
Temp °C
29
30
28
28
28
28
28
29
29
29
29
28
28
28
28
28
28
28
28
28
Feels °C
31
32
31
32
31
30
30
31
30
31
32
30
31
31
31
30
29
28
29
29
  • 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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