Weather in グアム in 12月
Country-wide climate normals across 15 cities in グアム.
How Hot Is グアム in 12月?
Uniform heat across グアム's December: averages climb to 29°C nationally with overnight lows of 27°C, narrow spread from coast to interior. The hottest cities like Apra Harbor register similar readings to the coolest, so plan for consistently hot weather across the country.
Sunshine in グアム in 12月
グアム sees limited sun in December: just 1.0h a day in Dededo Village, with heavy cloud cover common across most regions. Daylight runs from 6:35 am to 5:55 pm, but persistent grey skies and overcast stretches mean direct sunlight is genuinely scarce. Many days pass without any prolonged sunny spells.
Does It Rain In グアム In 12月?
グアム's December is wet across most regions: 151mm in Dededo Village across 22 days, with rain falling on most days of the month. Coastal and highland regions can see significantly more, while interior regions may stay slightly drier. Sunny stretches are brief and uncommon.
Is グアム Humid In 12月?
Saturated air defines グアム's December: humidity at 78% in Dededo Village, with the country as a whole feeling muggy and oppressive. The air practically drips after rain, and even shaded outdoor areas feel warm and clammy. Plan indoor time during the most humid afternoon hours.
Wind In グアム In 12月
グアム sees consistent breezes in December — averaging 29 kph in Dededo Village, with similar windy conditions across most regions. Coastal and exposed inland cities often see considerably more, especially in the afternoons. Wind-sensitive plans should factor this in.
Cloud Cover In グアム In 12月
Heavy overcast covers グアム in December: 77% cloud cover in Dededo Village, with similar grey conditions in most regions. Direct sun is rare, and the pattern is persistent across the country. Coastal and northern regions feel especially heavy.