Sanjo, Japan's climate is characterized by mild winters with occasional cold snaps, as evidenced by January's average low of 2°C and February's brief warm-up. Spring arrives in March with temperatures rising to an average high of 8°C, while April brings warmer days with highs reaching up to 23°C. Summer months from June to August are hot and humid, with temperatures consistently above 20°C, peaking at 38°C in August. Autumn is mild and pleasant, with September's warm days giving way to cooler nights by October, before the cycle repeats with a slight chill in November. Winters bring occasional frost but rarely extreme cold, with December's average temperature hovering around 5°C.