Osaka Weather Guide

Spring (March–May): warm, dry, busy

March through May brings mild, comfortable temperatures rising from around 10°C in early March to 22–24°C by May. Cherry blossoms typically open in late March and peak briefly in early April before giving way to fresh green leaves. This is Osaka's busiest and most expensive window to visit, and the most reliably pleasant for walking the city outdoors.

Summer (June–August): hot, humid, and wet at first

June brings the tsuyu rainy season — grey, humid, with frequent showers rather than constant rain. July and August are genuinely hot and humid: daytime highs of 33–35°C with high humidity make afternoon sightseeing in full sun genuinely uncomfortable. Evenings come alive, festivals run through July and August, and indoor attractions (Kaiyukan, depachika, covered arcades) become a practical necessity mid-afternoon.

Autumn (September–November): the quiet favourite

September is still warm but the humidity breaks. October and November are widely considered Osaka's best weather for walking — highs of 18–25°C, low humidity, clear skies, and autumn foliage (koyo) peaking in mid-to-late November. Fewer crowds than spring, lower prices than Golden Week.

Winter (December–February): cool, dry, uncrowded

Osaka winters are mild by northern Japanese standards — daytime temperatures typically stay between 6–12°C, rarely dropping below zero, with occasional cold snaps. Snow is uncommon in central Osaka, though it does appear a few times most winters. The city is quieter, hotels are cheapest, and illumination displays in December make evening walks genuinely worthwhile.

Month-by-month quick reference

Jan: 6–10°C, dry, cold. Feb: 7–11°C, dry. Mar: 9–15°C, cherry blossoms late month. Apr: 14–21°C, peak spring. May: 18–25°C, warm and green. Jun: 21–29°C, rainy season begins. Jul: 25–33°C, hot and humid. Aug: 26–34°C, peak heat. Sep: 22–30°C, still warm. Oct: 16–25°C, ideal. Nov: 10–19°C, foliage. Dec: 7–12°C, illuminations.