Winter in Tamagawa is typically cool, with January and February averaging around 6-9°C, and temperatures ranging from as low as -4°C to as high as 23°C. Spring brings mild temperatures, rising steadily from March's average of 13°C to April's 16°C, before spiking up to 30°C in the latter half of the month. Summer is hot and humid, with July being the warmest month, averaging around 28°C, while August is nearly as sweltering, with temperatures often reaching over 37°C. Autumn sees a welcome drop in temperature, returning to more moderate levels by November, before cooling further into winter.