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Guam weather in March

Weather in Guam: March

Average day temperature: 84.2°F
Average night temperature: 80.3°F
Sea water temperature: 82.2°F
Number of sunny days: 3 days
Day length: 11.9 - 12.2 hours
Number of rainy days: 3 days
Precipitation totals: 2.1 in.

Air temperature in March, °F

Show year:
2025
2024
2023
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
14
28
42
56
70
84
98
112
Day temperature   
Night temperature

The highest day temperature during March of 2025 was 84°F. At the same time the lowest night temperature was 77°F. Daily and nightly averages during March were 82.8°F and 79.0°F.

Sea water temperature in Guam in March, °F

Show year:
2025
2024
2023
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
77
79
81
83
85
87
89

The average sea water temperature in March of 2025 was 82.6°F. The highest and lowest sea temperatures during the month were 82.9°F and 81.9°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
10%
52%
39%

Mostly all days in March are partly cloudy but sunny or cloudy days are also possible.

Precipitation total in March, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.9
3.7
5.6
7.4
9.3
11.2
13.0
14.9
3.8
4.7
8.4
10.7
10.9
9.1
5.0
4.1
3.6
2.5
2.5
3.8
4.7
8.4
10.7
10.9
9.1
5.0
4.1
3.6
2.0
2.5
2.5

Precipitation total value in Guam in March is 2.0 in. Other months of the year show relatively similar values.

Wind speed in March, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
3.0
5.9
8.9
11.8
14.8
17.7
20.7
16.6
14.2
10.6
9.1
9.6
10.5
11.5
12.8
14.2
17.3
16.4
16.6
14.2
10.6
9.1
9.6
10.5
11.5
12.8
14.2
14.8
17.3
16.4

The average wind speed value in March is 14.8 mph It makes March one of the most windy months of the year.

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.9
1.9
2.8
3.7
4.6
5.6
6.5
4.8
4.4
4.3
4.8
4.6
4.5
5.4
5.3
5.3
5.3
4.8
4.8
4.4
4.3
4.8
4.6
4.5
5.4
5.3
5.3
5.3
5.3
4.8

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in March is: 5.3.

Best time for vacation in Guam

Sunniest months:
July 6 days
June 5 days
August 5 days
Warmest months:
June 87.7 °F
July 87.6 °F
August 87.2 °F
Warmest sea temp:
August 85.5 °F
September 85.5 °F
July 85.4 °F
Coldest months:
February 83.2 °F
January 83.9 °F
March 84.2 °F
Rainiest months:
October 16 days
July 14 days
August 14 days
Windiest months:
February 17.4 mph
December 17.3 mph
January 16.8 mph

Guam on a weather map

Leaflet | Tiles © Esri
Places in Northern Mariana Islands:
Name
°F
+81°F
+82°F
+81°F
+81°F
+81°F
24 Hours Forecast
Guam
Local time: 03:37
April 13, sunday
0600
81°F
W
11 mph
0900
84°F
W
15 mph
1200
84°F
W
16 mph
1500
84°F
W
15 mph
1800
82°F
W
14 mph
2100
81°F
W
13 mph
April 14, monday
0000
81°F
W
12 mph
0300
82°F
SW
11 mph
Units of measurement: °C / °F