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Umatac ratings
Quality on a good day: 2.0
Consistency of Surf: 2.0
Difficulty Level: 3.0
Crowds: 4.0

Overall: 2.8

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Based on 1 vote. Vote


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Umatac Surf Forecast / Guam / Guam

12 Day Weather and Surf, issued 3 am Saturday 17 Apr 2021 ChST
Forecast update in  hr  min  s 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 29.0 °C (Statistics for 17 Apr 1981-2005 - mean: 28.1 max: 29.0 min: 27.0 °C)
Icon breakBreak
Icon legend buoysLive Wave Height (m)
Icon legend windLive Wind Speed (km/h)
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 29.0 °C (Statistics for 17 Apr 1981-2005 - mean: 28.1 max: 29.0 min: 27.0 °C)

Eyeball surf reportRecent Eyeball Surf Reports for Guam

  1. weather stationWind Update Continuing clean conditions at Umatac (light winds from the ESE at BUOY-APRP7 16 km from Umatac).

    Umatac
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16 km away, 1 h 34 min ago

Light
8 km/h
ESE
30.0
29.0
Air / Water (°C)
Please reload the page to see if there are any updates.


Best Forecast Surf Conditions for Umatac this week:

The surf forecast for Umatac over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Apr 17) at 1PM. The primary swell is predicted to be 1.8m and 11s period with a secondary swell of 0.8m and 9s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Umatac in the next 12 days are 1.9m 14s and forecast to arrive on Thursday (Apr 22) at 1PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 12s period and expected on Monday (Apr 19) at 7AM.

Wave TypeTime (ChST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Sat 17th Apr)6ft (1.8m) 11s
Best Surf 7PM (Sun 18th Apr)6ft (1.9m) 12s
Most Powerful 1PM (Thu 22nd Apr)6ft (1.9m) 14s

Table - best surf conditions forecast for Umatac over the next 12 days.

Updates in  hr  min  s Update imminent
Rating
(10 max)
Swell
Height Map
Wave Height (m) & direction (?)
Period(s) (?)
Wave
Graph
(?)Metric surfscale
Energy (?)
Wind
(km/h)
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
High Tide
/ height (m)
Low Tide
/ height (m)
Summary
Rain (mm)
High °C
Low °C
Chill °C (?)
Sunrise
Sunset
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
434344444554545555444222135220233233
T guam.htsgw.metric.18.cc23
T guam.htsgw.metric.42.cc23
T guam.htsgw.metric.66.cc23
T guam.htsgw.metric.90.cc23
T guam.htsgw.metric.114.cc23
T guam.htsgw.metric.138.cc23
T guam.htsgw.metric.162.cc23
T guam.htsgw.metric.186.cc23
T guam.htsgw.metric.210.cc23
T guam.htsgw.metric.234.cc23
T guam.htsgw.metric.258.cc23
T guam.htsgw.metric.282.cc23
1.8
SW
1.5
SW
1.8
SW
1.7
WSW
1.8
WSW
1.8
WSW
1.6
WSW
1.6
WSW
1.7
W
1.8
W
1.8
W
1.7
W
1.8
W
1.5
W
1.7
W
1.8
W
1.8
W
1.8
W
1.6
W
1.5
W
1.4
W
1.3
W
1.3
WNW
1.5
WNW
1.3
WNW
3
WNW
4
WNW
2.5
NW
2.3
NW
2.5
NNW
2.2
NNW
2
NNW
2
NNW
1.7
NNW
1.6
NNW
1.3
NNW
111112111212121212131313141314141414141314141413141514131214131212111110
752496857711934986648705855112111389461179737115913401303129794380676964663673571236186099239214272498151411971102750634356
15
E
15
ENE
15
NE
20
ENE
15
ENE
15
ENE
20
E
15
E
10
NE
10
E
10
ENE
15
ENE
15
E
10
E
15
ENE
5
ESE
0
SSE
10
NE
10
SE
10
SSE
5
S
15
SW
15
SW
20
SW
25
SSW
30
SW
25
SW
30
SSW
30
SW
25
SW
25
SW
25
SW
20
SW
15
SW
10
WSW
10
S
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
cross-
off
offglasscross-
off
offcross-
off
cross-
off
crosscross-
on
crosscrosscrosscrosscrosscrosscross-
on
crosscrosscross-
on
crosscross-
on
cross-
off
12:30AM
0.63
10:02AM
0.63
1:40AM
0.63
10:37AM
0.61
2:52AM
0.64
11:31AM
0.59
3:52AM
0.66
12:56PM
0.58
4:37AM
0.69
2:35PM
0.58
5:12AM
0.71
4:02PM
0.60
5:43AM
0.73
5:16PM
0.64
6:12AM
0.75
6:22PM
0.69
6:42AM
0.77
7:24PM
0.73
7:12AM
0.78
8:24PM
0.76
7:43AM
0.79
9:24PM
0.77
4:58PM
0.03
5:15AM
0.49
5:44PM
0.03
6:16AM
0.53
6:40PM
0.04
7:43AM
0.54
7:43PM
0.04
9:11AM
0.52
8:49PM
0.04
10:14AM
0.46
9:50PM
0.04
11:01AM
0.38
10:47PM
0.05
11:43AM
0.28
11:38PM
0.08
12:24PM
0.17
12:27AM
0.12
1:05PM
0.05
1:14AM
0.19
1:48PM
-0.05
2:01AM
0.27
2:32PM
-0.12
2:49AM
0.35

Note: the tide data above is for Guam, Marianas which is 4 km away. Surf properties and timing are calculated for Umatac.New forecast is published every 6 hours at www.surf-forecast.com. See detailed tide info and graph
Offshore winds at Umatac blow from the ESE

Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
partially cloudy
partially cloudy
clear
clear
clear
thunderstorm
partially cloudy
clear
rain showers
partially cloudy
partially cloudy
partially cloudy
partially cloudy
clear
clear
clear
clear
clear
clear
clear
clear
clear
partially cloudy
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
some cloudssome cloudsclearclearclearrisk thund- dersome cloudsclearrain shwrssome cloudssome cloudssome cloudssome cloudsclearclearclearclearclearclearclearclearclearsome cloudsclearclearclearrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- der
-----2--5-----------------44389126242
282828292928282928282828282827282827282827282828292928282828282828282828
282827282827282827282827282827272827272827282828282928282828282828282827
282828292928282928282828282827282827282827282828292928282828282828282828
6:07--6:07--6:05--6:05--6:05--6:05--6:03--6:03--6:03--6:01--6:01--6:01--
-6:34--6:34--6:34--6:34--6:35--6:35--6:35--6:35--6:35--6:35--6:35--6:36-

Short Range Forecast: Light rain (total 7mm), mostly falling on Mon night. Warm (max 29°C on Sun morning, min 27°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 28°C on Tue morning, min 27°C on Tue night). Wind will be generally light.

Days 6-9 Weather Summary Light rain (total 4mm), mostly falling on Sun night. Warm (max 29°C on Sun morning, min 27°C on Fri morning). Winds increasing (calm on Fri afternoon, fresh winds from the SW by Sun afternoon).

Long Range Forecast: Heavy rain (total 51mm), heaviest during Tue afternoon. Warm (max 28°C on Mon morning, min 27°C on Wed night). Winds decreasing (fresh winds from the SW on Mon morning, light winds from the SSW by Wed night).

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 Umatac 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.


Information about the Umatac Surf forecast

The above surf forecast table for Umatac provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Umatac can be found by selecting the local surf guide option on the grey menu. Our Umatac surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Umatac) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Umatac may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Umatac is 22 km (14 miles) from Agana. If you plan a holiday in Guam, look for hotels and other accommodation in Agana. Agana has rooms for a wide range of budgets as well as car hire and transport links.