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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

See all 18 ratings

Based on 1 vote. Vote


Surf Report Feed

Eyeball surf reportRecent Eyeball Surf Reports for Guam

  1. weather stationWind Update Continuing clean conditions at Umatac (calm at Santa Rita WWTP Agat wx 12 km from Umatac). no significant swell
    Umatac
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Actual: 55 min ago

Calm
0 km/h
E
Clean
Please reload the page to see if there are any updates.
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Umatac Surf Forecast / Guam / Guam

7 Day Weather and Surf, issued 3 pm Monday 16 Jul 2018 ChST

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 28.6 °C (Statistics for 16 Jul 1981-2005 - mean: 29.3 max: 29.9 min: 28.7 °C)

MonTuesday 17Wednesday 18Thursday 19Friday 20Saturday 21Sunday 22Monday 23
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
1
1
2
2
3
3
3
3
3
3
2
2
3
3
1
2
2
2
3
3
3
Swell
Height Map See all maps
Wave Height (m) & direction (?)
0.9
WSW
0.8
WSW
0.8
WSW
0.8
WSW
0.9
WSW
1.1
W
1.2
W
1.3
W
1.3
W
1.2
W
1.2
W
1.1
W
1
W
1.2
W
1.2
W
1.2
W
1.2
WNW
1.5
WNW
1.5
WNW
1.7
WNW
2.1
WNW
2.4
WNW
2.5
WNW
Period(s) (?)888888910101010101010101011111111121313
Surfscale.metric
Wave
Graph
(?)
Energy(?)108696664122177240314312266271244196313296314343531521704124019052329
Wind
(km/h)
10
E
15
ENE
15
E
10
E
10
E
10
NE
10
ENE
10
ENE
10
SE
10
ESE
10
E
15
ESE
10
SSE
10
SSW
15
S
20
S
20
SSW
20
SSW
20
SW
15
SW
15
SW
15
SW
15
SW
Wind State(?)cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
offoffoffoffcross-
off
crosscross-
off
cross-
off
crosscrosscrosscrosscrosscross-
on
cross
High Tide
/ height (m)

11:16PM
0.79
10:05AM
0.69

12:00AM
0.78
11:12AM
0.63

12:43AM
0.76
12:31PM
0.57

1:26AM
0.74

2:02PM
0.54
2:10AM
0.73

3:39PM
0.54
2:56AM
0.71

5:05PM
0.57
3:41AM
0.70

6:13PM
0.61

Low Tide
/ height (m)


4:55AM
0.37
4:56PM
-0.06

5:57AM
0.32
5:46PM
0.05

7:02AM
0.27
6:39PM
0.16

8:09AM
0.20

7:37PM
0.26
9:13AM
0.14

8:42PM
0.35
10:12AM
0.08

9:51PM
0.41
11:04AM
0.03


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.
 MonTuesday 17Wednesday 18Thursday 19Friday 20Saturday 21Sunday 22Monday 23
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
rain showers
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Summary
rain shwrsrain shwrsrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derclearrain shwrsrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- derrisk thund- der
Rain (mm)
231110103494-3131312733685431
High °C
2728282828292928292928282828282828282828282828
Low °C
2728282827282828292927282827282827282827282828
Chill °C (?)
2728282828292928292928282828282828282828282828
Sunrise
--6:01--6:03--6:03--6:03--6:03--6:03--6:03--
Sunset
6:52--6:52--6:52--6:51--6:51--6:51--6:51--6:51-
Short Range Forecast: Heavy rain (total 59mm), heaviest during Tue night. Warm air temperatures (max 29°C on Wed morning, min 27°C on Mon afternoon). Wind will be generally light.Long Range Forecast:Heavy rain (total 78mm), heaviest during Fri afternoon. Warm air temperatures (max 28°C on Fri morning, min 27°C on Fri night). Wind will be generally light.

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 7 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.

FEATURE UPDATE: we now show red swell icons for 'open sea' swells that are travelling in an unfavourable direction for the surf break. In places, these swells may still wrap around coastlines and produce smaller waves at some breaks. They are also significant for windsurfers and other water users that tend to venture further off-shore.