Osaka weather in May
In May, Osaka has an average high of 24 °C75 °F and an average low of 14 °C56 °F, with about 159 mm6.3 in of precipitation. It is the 5th warmest month of the year and ranks 6th for precipitation.
How May compares with other months
Compared with April, May is 5 °C9 °F warmer on average and wetter by 24 mm1.0 in. Compared with June, May is 4 °C7.3 °F cooler on average and drier by 53 mm2.1 in. Daylight lasts about 14.0 hours around the middle of the month. Average relative humidity is 79% and the average cloud amount 67%.
Is May a good time to visit Osaka?
Yes — May is one of the most comfortable months to visit Osaka by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in May
For Osaka in May, pack light layers — T-shirts plus a light sweater or jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
May in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Osaka | 2475 | 1456 | 1596.3 |
| Hirakata | 2374 | 1356 | 1405.5 |
| Kobe | 2271 | 1559 | 1385.4 |
| Sandachō | 2373 | 1253 | 1285.0 |
| Kyoto | 2373 | 1355 | 1405.5 |
| Kusatsu | 2373 | 1254 | 1566.2 |
| Minato | 2271 | 1762 | 1646.4 |
| Himeji | 2374 | 1355 | 1285.0 |
| Hikone | 2272 | 1356 | 1485.8 |
Nearby places that are more than 1 °C1.8 °F cooler: Sandachō, Kusatsu and Hikone.
Other months in Osaka
- January8 °C47 °F / 1 °C33 °F
- February10 °C50 °F / 1 °C34 °F
- March14 °C57 °F / 3 °C38 °F
- April19 °C67 °F / 8 °C47 °F
- May24 °C75 °F / 14 °C56 °F
- June27 °C81 °F / 18 °C65 °F
- July30 °C87 °F / 23 °C74 °F
- August31 °C89 °F / 24 °C75 °F
- September28 °C82 °F / 20 °C68 °F
- October22 °C72 °F / 14 °C57 °F
- November17 °C62 °F / 8 °C46 °F
- December11 °C51 °F / 3 °C37 °F
Frequently asked questions
How warm is Osaka in May?
In May the average high in Osaka is 24 °C (75 °F) and the average low is 14 °C (56 °F).
Does it rain a lot in Osaka in May?
On average about 159 mm (6.3 in) of precipitation falls in May; it ranks 6th of the 12 months.
Is May the warmest month in Osaka?
No. The warmest month in Osaka is August, with an average high of 31 °C (89 °F). The coldest month is January, with an average low of 1 °C (33 °F).
How long is the day in Osaka in May?
In the middle of May the day in Osaka lasts about 14.0 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Osaka in May?
The average relative humidity in May is about 79%. This is a long-term average for the whole day.
How cloudy is Osaka in May?
On average about 67% of the sky is covered by cloud in May. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 264 m, while Osaka lies at about 4 m. Temperatures on this page were therefore adjusted by +1.7 °C3 °F using the standard lapse rate of 6.5 °C per 1,000 m.