Hateruma has a
tropical rainforest climate (
Af according to the
Köppen climate classification), because all twelve months have a mean temperature of at least . The temperature is consistently warm year-round, with January, the coolest month, having a mean of and an average low of . July is the warmest month, with a mean of and an average high of . The highest temperature ever recorded was in August and the lowest recorded temperature was in March. Hateruma receives of precipitation annually. Precipitation is abundant year-round, with every month receiving at least of rain.
Typhoons often bring heavy rain, so Hateruma receives more precipitation at the peak of the typhoon season. September is the wettest month, receiving of rain on average. February is the driest month, receiving of rainfall. There are a similar amount of precipitation days each month, with April having the least with 8.3 and January having the most with 11.6 days. Hateruma receives 1965.8 hours of sunshine annually, with summer being the sunniest season and winter being the least sunny season. {{Weather box|width=auto ==Infrastructure==