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Surf Forecasts:

Boat Basin Lefts surf break

Boat Basin Lefts surfForecast / Guam / Guam

information circle48hr Weather and Surf, issued 3 am Thursday 12 Mar 2026 ChST
Forecast update in hr  min  s Forecast update imminent
Boat Basin Lefts surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Boat Basin Lefts sea temperature is
28.1° C
 (Which is slightly warmer than usual)

How big are the waves at Boat Basin Lefts today?

The current surf forecast for Boat Basin Lefts at 7AM is: 0.8m 11s primary swell from a Northeast direction and 0.9m 9s secondary swell from a North direction (forecast issued at 03:00am March 12). The wind direction is predicted to be glassy and the swell rating is 2.

Time (ChST) & DateWave HeightWave Period
Morning (12 Mar)3.5ft (1.0m)8s
Afternoon (12 Mar)2.5ft (0.8m)13s
Evening (12 Mar)3.5ft (1.1m)13s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Thursday
12
Friday
13
Saturday
14
1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM
Rating
(10 max)
2
2
2
2
2
2
2
2
1
2
2
1
1
0
0
1
0
1
2
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1
NE
0.9
NE
0.8
NE
1
N
0.7
NE
0.8
NE
0.7
NE
1.1
NE
1.1
NE
1.1
NE
1.1
NE
1.1
NE
1.1
NE
1.1
NE
1.1
NE
1.1
NE
0.8
NE
1.1
NE
1.2
N
1.2
NE
1.3
NE
1.3
NE
1.7
NNW
1.3
NE
Period(s) (?)12111181113121313131313131313131413101416161316
Wave
Graph
(?)Metric surfscale
Energy kJ (?)264217147136121235139380386444437380374369380398238398299518803803931793
Wind
(km/h)
10
SE
10
SSE
5
S
10
S
15
S
10
S
15
S
15
S
20
S
20
SSW
20
SSW
25
SW
25
WSW
20
WSW
20
WSW
20
SW
25
SW
15
SW
15
WSW
25
NW
30
NW
30
NW
30
NW
25
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffglasscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscross-
on		crosscrosscrosscrosscrossononononon
High Tide
/ height (m)
4:13AM
0.71
12:03PM
0.77
5:31AM
0.74
1:06PM
0.75
6:12AM
0.77
2:34PM
0.75
Low Tide
/ height (m)
7:13AM
0.69
8:42PM
0.26
9:04AM
0.71
9:48PM
0.25
10:38AM
0.70
Thursday
12
Friday
13
Saturday
14
Sunrise--6:31-------6:30-------6:28-----
Sunset-----6:30-------6:30-------6:30--
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
mod rain
mod rain
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
cloud
Rain (mm)
--131123233767423-11----
Temp. °C262626272828262625262625262626262526262727272626
Feels °C (?)292930303031292826272726272827282528292726262525
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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View detailed surf forecast for Boat Basin Lefts at:
surf-forecast.com

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