Weather in 北マリアナ諸島 in 12月
Country-wide climate normals across 10 cities in 北マリアナ諸島.
How Hot Is 北マリアナ諸島 in 12月?
北マリアナ諸島 sees consistently hot December weather — average highs of 28°C, average lows of 27°C, with minimal regional differences. Whether you're in Saipan or one of the coastal cities, conditions feel broadly the same: hot, generally clear, with little night-time relief.
Sunshine in 北マリアナ諸島 in 12月
Limited sunshine and short daylight define 北マリアナ諸島's December: Saipan averages just 1.3h of direct sun, with the sun up between 6:35 am and 5:50 pm. The grey, overcast pattern is consistent across most of the country, with little regional variation in cloud cover.
Does It Rain In 北マリアナ諸島 In 12月?
Moderate rainfall defines 北マリアナ諸島's December: Saipan averages 80mm across 16 days. Some regions see meaningfully wetter weather, especially coastal or mountain-facing areas, while continental interiors tend toward the drier end of the spectrum.
Is 北マリアナ諸島 Humid In 12月?
Heavy oppressive humidity covers 北マリアナ諸島 in December: 77% on average in Saipan, and similar saturating conditions exist nationwide. The air feels thick and heavy from sunrise to sundown, with little overnight respite. Coastal and tropical regions feel especially stifling.
Wind In 北マリアナ諸島 In 12月
北マリアナ諸島 sees consistent breezes in December — averaging 33 kph in Saipan, 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 北マリアナ諸島 In 12月
Heavy overcast covers 北マリアナ諸島 in December: 76% cloud cover in Saipan, 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.