March weather forecast
Umatac, GU

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Weather in March

Transitioning into March, Umatac, Guam experiences a minor reduction in recorded rainfall and humidity. Subsequent to the moderate decline of precipitation to 1.81" (46mm), March becomes notably drier compared to February. On the flip side, there is an increase in sunshine hours providing an ideal setting for beach visits and picnics. Abiding winds and mild temperatures dominate the weather scenario, providing a comforting ambiance. The continued high UV index underscores the importance of sun protection.

Temperature

The arrival of March brings an average high-temperature of a still moderately hot 82°F (27.8°C), subtly diverging from February's 81.7°F (27.6°C). Umatac, in March, registers an average low temperature of 80.1°F (26.7°C), showing a minute reduction from daily highs.

Heat index

In March, the average heat index is estimated at a hot 87.8°F (31°C). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.
Heat index data is primarily for areas with shade and subjected to light winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.

Humidity

The months with the highest humidity are January, March through May, October through December, with an average relative humidity of 78%.

Rainfall

The month with the least rainfall is March, when the rain falls for 20.2 days and typically collects 1.81" (46mm) of precipitation.

Daylight

In Umatac, the average length of the day in March is 12h and 4min.
On the first day of March, sunrise is at 6:37 am and sunset at 6:30 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 6:33 pm ChST.

Sunshine

In March, the average sunshine is 8.1h.

UV index

The months with the highest UV index are January through August, October through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: An average UV index of 7 in March transforms into this advice:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.

Frequently asked questions

What is the temperature in March?

The high-temperature, in March, in Umatac, is 82°F (27.8°C), while the low-temperature averages to 80.1°F (26.7°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in March is estimated at 87.8°F (31°C).

What is the most humid month?

The months with the highest humidity are January, March through May, October through December, with an average relative humidity of 78%.

What is the average humidity in March?

In Umatac, Guam, the average relative humidity in March is 78%.

What is the driest month?

The month with the least rainfall is March, when the rain falls for 20.2 days and typically collects 1.81" (46mm) of precipitation.

How many days does it rain in March?

In Umatac, during March, the rain falls for 20.2 days and regularly aggregates up to 1.81" (46mm) of precipitation.

How many hours of daylight does Umatac have in March?

In Umatac, Guam, the average day length in March is 12h and 4min.

When is the sunrise / sunset in March?

In March, on the first day of the month, sunrise is at 6:37 am and sunset at 6:30 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 6:33 pm ChST.

How long on average sun shines in March?

In March, the average sunshine duration is 8.1h.

What is the month with the highest UV index?

The months with the highest UV index are January through August, October through December, with an average maximum UV index of 7.

What is the UV index reading in March?

In Umatac, the average daily maximum UV index in March is 7. A UV Index reading of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Umatac, GU

Average temperature in March - Umatac, GU
  • Average high temperature in March: 82°F

The warmest months (with the highest average high temperature) are July and August (84.7°F).
The month with the lowest average high temperature is February (81.7°F).

  • Average low temperature in March: 80.1°F

The month with the highest average low temperature is June (83.3°F).
The coldest month (with the lowest average low temperature) is February (79.7°F).

Average pressure in March
Umatac, GU

Average pressure in March - Umatac, GU
  • Average pressure in March: 29.87"Hg

The month with the highest atmospheric pressure is February (29.88"Hg).
The months with the lowest atmospheric pressure are August, September and October (29.79"Hg).

Average wind speed in March
Umatac, GU

Average wind speed in March - Umatac, GU
  • Average wind speed in March: 15mph

The windiest month (with the highest average wind speed) is February (16.3mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).

Average humidity in March
Umatac, GU

Average humidity in March - Umatac, GU
  • Average humidity in March: 78%

The months with the highest relative humidity are January, March, April, May, October, November and December (78%).
The month with the lowest relative humidity is August (76%).

Average rainfall in March
Umatac, GU

Average rainfall in March - Umatac, GU
  • Average rainfall in March: 1.81"

The wettest month (with the highest rainfall) is September (10.28").
The driest month (with the least rainfall) is March (1.81").

Average rainfall days in March
Umatac, GU

Average rainfall days in March - Umatac, GU
  • Average rainfall days in March: 20.2 days

The months with the highest number of rainy days are July and August (28.9 days).
The month with the least rainy days is February (17.5 days).

Average daylight in March /
Average sunshine in March
Umatac, GU

Average daylight in March / Average sunshine in March - Umatac, GU
  • Average daylight in March: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).

  • Average sunshine in March: 8h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is November (Average sunshine: 6h and 18min).

Average sunshine days in March
Umatac, GU

Average sunshine days in March - Umatac, GU
  • Average sunshine days in March: 6.6 days

The month with the most sunshine days is March (6.6 days).
The month with the least sunshine days is September (1.1 days).

Average UV index in March
Umatac, GU

Average UV index in March - Umatac, GU
  • Average UV index in March: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 7).
The month with the lowest UV index is September (UV index 6).

Average cloud cover in March
Umatac, GU

Average cloud cover in March - Umatac, GU
  • Average cloud cover in March: 43

The months with the most cloud cover are January, August and October (Cloud cover 46).
The months with the least cloud cover are May and June (Cloud cover 39).

Average visibility in March
Umatac, GU

Average visibility in March - Umatac, GU
  • Average visibility in March: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Umatac, Guam, USA

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