June weather forecast
Guam, USA

June in Guam heralds the official onset of the wet season. During this month, temperatures range from 80°F (26.7°C) to 89°F (31.7°C), showcasing the island's tropical warmth. The consistent rise in humidity, accompanied by more frequent rain showers, characterizes the shift from the dry to wet season.

Throughout the entire span of Guam, this change in weather patterns is evident. The previously dry landscapes start to embrace the fresh showers, rejuvenating the island's flora and amplifying its verdant beauty. June's climate contrasts sharply with May's ending dry spells, signifying the summer's wet embrace.

Rainfall in June is more pronounced, with the month experiencing a notable increase in rainy days compared to May. However, the ever-reliable northeast trade winds, moving at speeds from 10mph (16.1km/h) to 20mph (32.2km/h), persistently blow across the island, offering moments of respite from the mounting humidity and intermittent showers.

The surrounding ocean, which has been steadily warming since the dry season, remains perfect for various marine pursuits. However, swimmers and divers should exercise a bit more caution due to the increased likelihood of sudden rain showers. As June progresses and transitions into July, the conditions become wetter, paving the way for the peak of the rainy season.

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• Hagåtña - June »
  June has the longest days of the year in Hagåtña with an average of 12h and 54min of daylight. In Hagåtña, in June, during 25.4 rainfall days, 3.7" (94mm) of precipitation is typically accumulated.
• Dededo - June »
  In Dededo during June, the rain falls for 25.4 days and regularly aggregates up to 3.7" (94mm) of precipitation. In Dededo, Guam, in June, it is raining for 25.4 days, with typically 3.7" (94mm) of accumulated precipitation.
• Santa Rita - June »
  In Santa Rita, Guam, in June, the average water temperature is 84.7°F (29.3°C). The initiation of June in Santa Rita sees an average high-temperature of a still moderately hot 84.6°F (29.2°C), showing minor variations from the previous month.
• Agat - June »
  June in Agat exhibits definitive summer weather, noticeable in the upswing of temperature and the increase in daylight hours. The month with the longest days in Agat is June, with an average of 12h and 54min of daylight.
• Piti - June »
  With an average of 12h and 54min of daylight, June has the longest days of the year in Piti, Guam. With an average of 10.6h of sunshine, June has the most sunshine of the year in Piti, Guam.
• Talofofo - June »
  June marks the middle of the year with Talofofo experiencing increases in rainfall, daylight hours, and a slight decrease in wind speeds to 11.6mph (18.7km/h) from 11.7mph (18.8km/h) of the previous month. June has the longest days of the year in Talofofo with an average of 12h and 54min of daylight.
• Inarajan - June »
  In Inarajan in June, during 25.4 rainfall days, 3.7" (94mm) of precipitation is typically accumulated. On the last day of June, in Inarajan sunrise is at 5:57 am and sunset at 6:51 pm ChST.
• Merizo - June »
  The month with the longest days in Merizo is June, with an average of 12h and 54min of daylight. On the first day of June in Merizo sunrise is at 5:53 am and sunset at 6:44 pm.
• Umatac - June »
  In Umatac during June, the rain falls for 25.4 days and regularly aggregates up to 3.7" (94mm) of precipitation. In Umatac, Guam, in June, it is raining for 25.4 days, with typically 3.7" (94mm) of accumulated precipitation.
• Guam National Wildlife Refuge - June »
  On the last day of June, in Guam National Wildlife Refuge, sunrise is at 5:56 am and sunset at 6:51 pm ChST. On the first day of June in Guam National Wildlife Refuge, sunrise is at 5:51 am and sunset at 6:44 pm.