March weather forecast
Guam, USA

March in Guam sees a subtle transition towards warmer temperatures, signaling the gradual approach of the summer months. Temperatures during March are typically in the range of 77°F (25°C) to 85°F (29.4°C). This slight increase from the cooler conditions of February is welcomed by many as a precursor to the warmer and wetter months ahead.

While the entire island maintains a consistent climate due to its relatively small size, March doesn't witness any notable variations in weather conditions across different regions or cities. It's during this month that Guam begins to move away from its coldest period, yet remains free from the intense heat of the peak summer months.

The dry season is still in effect during March, ensuring limited rainfall and providing an excellent backdrop for outdoor explorations and recreational activities. The northeast trade winds, blowing at speeds between 10mph (16.1km/h) and 20mph (32.2km/h), continue to regulate the climate, ensuring that the conditions remain favorable.

Ocean temperatures, while being slightly cooler than the land, remain inviting for marine enthusiasts, offering optimal conditions for activities like snorkeling and diving. As the calendar progresses to April, the island starts experiencing a more pronounced warmth, both in terms of air temperature and sea waters, setting the stage for the upcoming summer.

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• Hagåtña - March »
  The months with the highest humidity in Hagåtña are January, March through May, October through December, with an average relative humidity of 78%. In Hagåtña in March, during 20.2 rainfall days, 1.81" (46mm) of precipitation is typically accumulated.
• Dededo - March »
  The months with the highest humidity in Dededo are January, March through May, October through December, with an average relative humidity of 78%. The months with the highest humidity in Dededo are January, March through May, October through December, with an average relative humidity of 78%.
• Santa Rita - March »
  The months with the highest humidity in Santa Rita, Guam, are January, March through May, October through December, with an average relative humidity of 78%. The months with the highest humidity in Santa Rita are January, March through May, October through December, with an average relative humidity of 78%.
• Agat - March »
  The month with the least rainfall in Agat is March, when the rain falls for 20.2 days and typically collects 1.81" (46mm) of precipitation. The month with the least rainfall in Agat is March, when the rain falls for 20.2 days and typically collects 1.81" (46mm) of precipitation.
• Piti - March »
  The month with the least rainfall in Piti is March, when the rain falls for 20.2 days and typically collects 1.81" (46mm) of precipitation. January, March through May, October through December, with an average relative humidity of 78%, are most humid months in Piti.
• Talofofo - March »
  The month with the least rainfall in Talofofo is March, when the rain falls for 20.2 days and typically collects 1.81" (46mm) of precipitation. In Talofofo during March, the rain falls for 20.2 days and regularly aggregates up to 1.81" (46mm) of precipitation.
• Inarajan - March »
  The month with the least rainfall in Inarajan is March, when the rain falls for 20.2 days and typically collects 1.81" (46mm) of precipitation. The months with the highest humidity in Inarajan are January, March through May, October through December, with an average relative humidity of 78%.
• Merizo - March »
  January, March through May, October through December, with an average relative humidity of 78%, are most humid months in Merizo. The month with the least rainfall in Merizo is March, when the rain falls for 20.2 days and typically collects 1.81" (46mm) of precipitation.
• Umatac - March »
  The months with the highest humidity in Umatac are January, March through May, October through December, with an average relative humidity of 78%. January, March through May, October through December, with an average relative humidity of 78%, are the most humid months in Umatac.
• Guam National Wildlife Refuge - March »
  When is the sunrise / sunset in March in Guam National Wildlife Refuge? In Guam National Wildlife Refuge, in March, the average water temperature is 82.6°F (28.1°C).