Nyengo yomwe ili ku Northern Mariana Islands imatsimikiziridwa makamaka chifukwa cha njira zamalonda zomwe zimakhalapo kwa mphepo yomwe ilipo yam'mwera chakumadzulo kwa Oceance Ocean. Ngakhale kuti maunyolo awiri achilumba cha makilomita oposa 640 adatambasulidwa kumpoto mpaka kumwera, nyengo
Chifukwa chake, kuzilumbazi zidagawa nyengo yayikulu iwiri ya chaka: yonyowa komanso youma.
Kuchuluka kwa mpweya kumagwa kuchokera pakati pa chilimwe mpaka kumayambiriro kwa dzinja. Chinyezi chimabwera kuderali makamaka ngati muli ndi mvula yambiri yotentha yomwe imapita usiku. Nthawi zina kutentha tsiku ndi tsiku kumatha kusokoneza madzi amphamvu otentha, omwe samaposa theka la ola. Apaulendo akuyenera kudziwa kuti munthawi yamvula pachilumbachi chilipo mvula. Nyengo yamvula, kutentha kwa mpweya pa zisumbu kumachokera ku zilumbazi kumachokera ku 333 kupita ku madigiri, pomwe chinyezi cha mpweya sichigwera pansi 90%. Nyengo zoterezi ndizosavomerezeka kwa ana aang'ono ndi anthu omwe ali ndi matenda amtima. Mtengo wopuma panthawiyi ndi wotsika kwambiri.
Mu Disembala, nyengo yamvula imayamba pachilumbachi, chomwe chimatha mpaka kumapeto kwa June. Kutentha kwa mpweya tsiku ndi tsiku ndi madigiri. Munthawi imeneyi, pali chisangalalo chopuma pachilumbachi, chifukwa kamphepo kayezikulu zikuwomba kuchokera kunyanja. Chingwe cha nthawi ya alendo amagwirizana ndi tchuthi Chaka Chatsopano, mtengo wama hotelo a m'mahotela panthawiyi amatenga kangapo, poyerekeza ndi mitengo yamvula nyengo yamvula. Pokhapokha poyambira kumene mitengo ya masika imachepa pang'ono. Kuchokera pa Marichi Kutha, alendo azachuma amatha kusangalala ndi zisumbu osati nyengo yayitali, komanso mitengo yovomerezeka yogona ndi chakudya.
