Boat Basin Lefts Surf Break

Lat Long: 13.48° N 144.75° E

GUAM

Boat Basin Lefts 48 hour detailed Surf Forecast

Issued: 3 am 06 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 (06 Sep):

  • Morning surf: Morning surf (06 Sep, local time) - 4ft (1.2m), 9s period with W swell.
  • Afternoon surf: Afternoon surf (06 Sep, local time) - 4ft (1.2m), 9s period with W swell.
  • Evening surf: Evening surf (06 Sep, local time) - 3.5ft (1.1m), 9s period with WNW swell.

The current surf forecast for Boat Basin Lefts at 7AM is: 1.0m 8s primary swell from a West direction and 0.5m 10s secondary swell from a West-northwest direction (forecast issued at 03:00am September 06). The wind direction is predicted to be onshore.

Time (ChST) & DateWave HeightWave Period
Morning (06 Sep)4ft (1.2m)9s
Afternoon (06 Sep)4ft (1.2m)9s
Evening (06 Sep)3.5ft (1.1m)9s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Sun morning. Warm (max 28°C on Sun morning, min 26°C on Mon night). Wind will be generally light.

Sunday
6
Monday
7
Tuesday
8
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
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
1
0
0
0
1
1
1
1
1
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
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
W
8
1.2
W
8
1
W
8
1.2
W
10
1.2
W
10
1.2
W
9
1.2
WNW
9
1.1
WNW
10
1.1
WNW
10
1.1
WNW
9
1.1
WNW
9
1
WNW
9
1
WNW
9
1
WNW
9
1
WNW
9
1
WNW
9
1
WNW
9
1.1
WNW
9
1.1
WNW
9
1.1
WNW
9
1.1
WNW
9
1.1
WNW
9
1.1
WNW
9
0.9
WNW
9
Wave Graph
Metric surfscale
Energy kJ
205
200
133
267
267
246
254
235
235
216
206
169
162
162
162
162
162
172
172
180
193
188
188
143
Wind (km/h)
10
NW
10
WNW
10
NW
10
WNW
10
W
5
W
5
NW
5
NW
10
NW
15
NNW
15
N
15
NNE
15
NNE
15
NNE
15
N
15
N
20
N
25
N
20
N
20
N
15
N
15
N
15
NNW
15
NNW
Wind State
on
on
on
on
cross-on
cross-on
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-on
cross-on
on
High Tide
00:49AM0.85m
5:24PM0.81m
2:06AM0.84m
6:12PM0.84m
3:32AM0.84m
6:48PM0.87m
Low Tide
9:09AM0.13m
9:37PM0.73m
10:17AM0.12m
10:58PM0.70m
11:18AM0.11m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
part cloud
clear
part cloud
part cloud
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:29
6:28
6:27
 mm
1
2
4
4
2
1
2
1
1
1
Temp °C
27
27
28
28
28
28
28
28
27
27
27
27
28
28
27
27
27
26
26
27
27
27
27
27
Feels °C
31
30
32
31
31
32
32
32
30
29
29
29
30
30
30
29
28
26
27
29
29
29
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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