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 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Boat Basin Lefts sea temperature is
29.5°C
0.2° 

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 (05 Sep):

  • Afternoon surf: Afternoon surf (05 Sep, local time) - 4.5ft (1.3m), 9s period with W swell.
  • Evening surf: Evening surf (05 Sep, local time) - 4ft (1.2m), 8s period with W swell.

The current surf forecast for Boat Basin Lefts at 7PM is: 1.2m 8s primary swell from a West direction (forecast issued at 03:00pm September 05). An open ocean swell of 0.6m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (ChST) & DateWave HeightWave Period
Morning (05 Sep)--
Afternoon (05 Sep)4.5ft (1.3m)9s
Evening (05 Sep)4ft (1.2m)8s

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


Short Range Forecast

Light rain (total 6mm), mostly falling on Sun morning. Warm (max 29°C on Sat afternoon, min 26°C on Sun night). Wind will be generally light.

Sat
5
Sunday
6
Monday
7
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
1
1
0
0
0
0
0
0
0
0
1
1
1
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)
1.4
W
9
1.3
W
9
1.2
W
8
1.2
W
8
1.2
W
8
1.2
W
8
1.1
W
8
1.2
W
10
1.2
W
10
1.2
WNW
9
1.2
WNW
9
1.1
WNW
10
1.1
WNW
10
1.1
WNW
9
1.1
WNW
9
1.1
WNW
9
1
WNW
9
1
W
9
1
WNW
9
1
W
9
Wave Graph
Metric surfscale
Energy kJ
311
263
210
205
205
200
161
267
267
254
254
230
235
220
211
206
166
154
166
162
Wind (km/h)
15
W
15
W
10
WNW
5
WNW
10
WNW
15
WNW
10
WNW
10
NW
15
NNW
10
NNW
10
NNW
10
N
10
NNE
10
NE
10
NNE
5
N
10
N
15
N
15
N
15
N
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
on
on
cross-on
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
4:09PM0.77m
00:49AM0.85m
5:24PM0.81m
2:06AM0.84m
6:12PM0.84m
Low Tide
7:54PM0.72m
9:09AM0.13m
9:37PM0.73m
10:17AM0.12m
part cloud
thunderstorm
part cloud
thunderstorm
thunderstorm
clear
clear
thunderstorm
thunderstorm
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
part cloud
part 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>
6:30
6:29
6:28
 mm
1
1
1
2
1
Temp °C
29
29
28
28
28
28
28
28
28
27
27
27
27
26
26
27
28
28
27
27
Feels °C
31
32
31
33
32
32
32
31
31
30
30
30
31
29
30
31
31
31
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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