While Osaka's climate may not be its main draw, it typically offers mild and manageable weather throughout most of the year. Summers, specifically in July and August, can be hot and humid, with temperatures reaching highs of 95°F (35°C). The city's tsuyu or rainy season in June and sometimes into July brings consistent rainfall, making it the wettest period of the year.

Although winters from December to February are generally mild, with temperatures usually remaining above 50°F (10°C), occasional cold spells can see the mercury drop below this mark. Rainfall decreases during these winter months but begins increasing again in February. While spring and autumn offer transitional weather, these seasons are typically mild and are often considered the most comfortable times of the year to visit.