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 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Boat Basin Lefts sea temperature is
29.7°C
0.4° 

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 (01 Sep):

  • Afternoon surf: Afternoon surf (01 Sep, local time) - 4ft (1.2m), 9s period with WNW swell.
  • Evening surf: Evening surf (01 Sep, local time) - 4.5ft (1.4m), 9s period with W swell.

The current surf forecast for Boat Basin Lefts at 10PM is: 1.4m 9s primary swell from a West direction and 0.5m 10s secondary swell from a Northeast direction (forecast issued at 03:00pm September 01). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (ChST) & DateWave HeightWave Period
Morning (01 Sep)--
Afternoon (01 Sep)4ft (1.2m)9s
Evening (01 Sep)4.5ft (1.4m)9s

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


Short Range Forecast

Heavy rain (total 29mm), heaviest during Wed night. Warm (max 28°C on Tue afternoon, min 26°C on Tue night). Winds increasing (calm on Tue afternoon, strong winds from the SW by Thu morning).

Tue
1
Wednesday
2
Thursday
3
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
2
2
2
0
0
0
0
1
2
2
2
1
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)
1.2
WNW
9
1.2
WNW
9
1.4
W
9
1.4
W
9
1.4
W
9
1.3
W
9
1.3
W
9
1.3
W
9
1.2
W
9
1.3
W
9
1.3
W
9
1.4
W
8
1.4
W
8
1.4
W
8
1.1
WNW
8
1.1
WNW
9
1
WNW
9
1.3
WNW
12
1.3
WNW
12
1.3
WNW
11
Wave Graph
Metric surfscale
Energy kJ
248
259
327
313
306
264
264
264
230
264
257
278
271
266
180
189
169
461
414
372
Wind (km/h)
10
N
10
NNE
0
ENE
5
S
10
SSW
15
WSW
15
WNW
15
WNW
15
WNW
5
WNW
0
W
5
SSE
10
S
15
SSW
35
S
45
SW
30
WSW
30
SW
30
SW
25
SW
Wind State
cross-on
cross-on
glassy
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
glassy
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
High Tide
10:27AM0.81m
10:06PM0.89m
11:32AM0.79m
10:34PM0.89m
12:49PM0.76m
Low Tide
4:10PM0.46m
5:00AM0.25m
4:48PM0.54m
5:51AM0.21m
5:32PM0.62m
thunderstorm
thunderstorm
cloud
cloud
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
thunderstorm
thunderstorm
thunderstorm
<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>
6:31
6:31
6:30
 mm
1
1
1
1
1
1
2
2
1
1
2
5
1
3
3
1
Temp °C
28
28
27
27
27
26
27
28
28
28
27
27
27
26
27
27
27
27
27
27
Feels °C
31
31
32
31
30
29
29
30
31
32
32
32
31
28
26
24
27
27
27
28
  • 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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