Osaka weather in May
May in Osaka: warm, soaked — one of the best months to visit.
#1 of 12 months in Osaka · #178 of 604 destinations to visit in May · comfort 86/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Osaka climate normals — May
| Daytime high | 23°C / 74°F | 🌤 warm |
|---|---|---|
| Nighttime low | 15°C / 59°F | |
| Feels like (high) | 24°C / 75°F | |
| Rainfall | 161 mm / 6.3 in | ⛈ soaked |
| Rainy days | 10 days | |
| Humidity | 73% | 💧 humid |
| Dew point | 13°C / 56°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 14 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 62 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Osaka in May — FAQ
- Is May a good time to visit Osaka?
- May in Osaka: warm, soaked — one of the best months to visit. It ranks #1 of 12 months for Osaka on SeasonMap's comfort score (86/100).
- What is the weather like in Osaka in May?
- In May, Osaka averages a daily high of 23.2°C and a low of 15.1°C, with about 161.1 mm of rain over roughly 9.8 rainy days.
- What is the air quality in Osaka in May?
- Osaka has a mean US Air Quality Index of about 62 in May.