Tamba has a humid subtropical climate (Köppen climate classification Cfa) with hot summers and cool to cold winters. Precipitation is significantly higher in summer than in winter, though on the whole lower than most parts of Honshū, and there is no significant snowfall. The average annual temperature in Tanba is . The average annual rainfall is with July as the wettest month. The temperatures are highest on average in August, at around , and lowest in January, at around . The highest temperature ever recorded in Tanba was on 8 August 1994; the coldest temperature ever recorded was on 1 March 1986.
