Weather in Guam: March
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Average day temperature: | 84.2°F |
Average night temperature: | 80.3°F | |
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Sea water temperature: | 82.2°F |
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Number of sunny days: | 3 days |
Day length: | 11.9 - 12.2 hours | |
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Number of rainy days: | 3 days |
Precipitation totals: | 2.1 in. | |
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Guam |
temperature
Guam |
Air temperature in March, °F
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
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 days | |
Partly cloudy days | |
Cloudy days |
Mostly all days in March are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in March, in.
Precipitation total value in Guam in March is 2.0 in. Other months of the year show relatively similar values.
The average wind speed value in March is 14.8 mph It makes March one of the most windy months of the year.
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
Guam on a weather map

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