What May feels like in Osaka
In Osaka, May brings late spring. Days are warm enough for short sleeves, and time outdoors is easy. Once the sun goes down the air changes: nights stay mild. Some humidity hangs in the air, noticeable when the sun is strong.
Rain in Osaka in May
Showers are a regular feature, arriving about one day in 3. Rain tends to come in heavy bursts: about 14.8 mm (0.6 in) on an average rainy day. The yearly figure is similar, around 12.7 mm per wet day.
Daylight and sunshine in May
On 15 May the sun rises at about 4:56 am and sets around 6:53 pm local time, giving 13 h 57 min of daylight. Days are getting longer: 56 min more daylight than in mid-April. About 67% of daylight hours are sunny; in short, there are plenty of bright spells.
How May compares to the rest of the year
In Osaka's temperature order, May sits as the 5th warmest month. Afternoons run 4.6°C (8.3°F) warmer than in April, with 26 mm more rain. June continues the upward trend. June averages a high of 26.6°C (79.9°F).
Who May suits
- Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
- Parks & outdoor: a good fit — comfortable for long walks and picnics.
- Beach: less ideal — too many rainy days.
Tips for visiting Osaka in May
Versatile Layers
Pack pieces you can take off by noon and put back on at dusk.
Rain Protection
A packable rain jacket saves the day on showery afternoons.
Sunglasses
Plenty of sun, so bring sunglasses and a cap.
Quick questions
How warm is Osaka in May?
It feels warm: typical highs are 23°C (73.4°F), with lows near 14.2°C (57.6°F).
Does it rain a lot in Osaka in May?
Yes, fairly — rain falls about one day in 3 and totals about 163 mm, so an umbrella is worth carrying.
What should I wear in Osaka in May?
Pack versatile layers, rain protection and sunglasses. Bring something extra for the cooler evenings.
Is May or June better for visiting Osaka?
May scores better on our climate ranking (#3 of 12 vs #7), rated Good against Good. June is warmer and has more rainy days.