Umatac surf break

Umatac surfForecast / Guam / Guam

information circle48hr Weather and Surf, issued 9 pm Thursday 05 Mar 2026 ChST
Forecast update in hr  min  s Forecast update imminent
Umatac surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Umatac sea temperature is
28.3° C
(Which is slightly warmer than usual)

How big are the waves at Umatac today?

The current surf forecast for Umatac at 5AM is: 1.0m 14s primary swell from a North-northeast direction and 0.7m 13s secondary swell from a North direction (forecast issued at 09:00pm March 05). An open ocean swell of 1.5m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (ChST) & DateWave HeightWave Period
Morning (06 Mar)3.5ft (1.1m)14s
Afternoon (06 Mar)3.5ft (1.1m)14s
Evening (06 Mar)3.5ft (1.0m)13s

Table - waves today at Umatac. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent
Thu
05
Friday
06
Saturday
07
Sunday
08
7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM
Rating
(10 max)
1
0
0
1
0
0
0
0
0
1
0
1
2
0
3
3
2
2
2
1
1
0
0
2
Swell
Height Map
Wave Height (m) & direction (?)
0.9
NNE
0.9
NNE
0.9
NNE
0.9
NNE
1.1
NNE
1.1
NNE
1.1
NNE
1
NNE
1
NNE
1
NNE
0.9
NNE
0.9
NNE
0.8
NNW
1.3
NNE
1.8
NE
1.3
NNE
1
N
0.8
N
1
N
1.1
N
1.4
N
1.6
N
2.5
NNE
2.5
NNE
Period(s) (?)141414141414141414131313109891116161615141010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)303294316330427433446373347336277273127245408254251318482582842105913221348
Wind
(km/h)
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
35
ENE
35
ENE
30
ENE
35
ENE
35
ENE
30
ENE
30
ENE
20
ESE
30
ENE
25
ESE
20
SE
30
ESE
30
SE
20
SSE
25
S
30
SSW
35
SSW
40
SSW
20
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
offoffoffoffcross-
off
cross-
off
crosscrosscrosscross
High Tide
/ height (m)
9:09PM
0.66
9:30AM
0.73
9:58PM
0.63
9:49AM
0.72
10:50PM
0.60
10:10AM
0.71
Low Tide
/ height (m)
3:12AM
0.15
3:52PM
0.14
3:42AM
0.23
4:28PM
0.11
4:12AM
0.31
Thu
05
Friday
06
Saturday
07
Sunday
08
Sunrise----6:35-------6:33-------6:33---
Sunset-------6:30-------6:30-------6:30
clear
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
mod rain
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
------11113414617121910634343
Temp. °C272727272728272827272727262625252626262627272627
Feels °C (?)272626262627262726262727282626272626282627262529
  • 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

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