Odawara's winters are harsh, with temperatures often plummeting below -30°C in January and February, averaging around -1°C. Spring arrives in March, bringing warmer temperatures that rise to an average of 5°C, but still fluctuate between -21°C and 24°C. Summer is hot and humid, with July and August being the warmest months, averaging highs of 36°C and 39°C respectively. Autumn brings a brief respite from the heat, with September's temperatures ranging from -6°C to 32°C, before dropping again in October and November.