May weather forecastOsaka, Japan
May
Weather in May
As summer begins to peek over the horizon, May presents higher temperatures in Osaka. The climate continues to become hospitable, but hot days are still limited. The struggle between sporadic showers and radiant sunshine creates a striking balance in the weather pattern. Daylight hours increase, leading to longer days compared to the previous months. Despite seeing a rise in temperatures, May is also marked by the highest amount of rainfall of 146mm (5.75"), rendering the city quite damp.Temperature
The shift from April to May introduces a subtle increase in the average high-temperature, moving from a refreshing 19.9°C (67.8°F) to a moderately hot 24.5°C (76.1°F). In the month of May, Osaka witnesses a consistent average low-temperature of 15.6°C (60.1°F).Humidity
The average relative humidity in May in Osaka is 62%.Rainfall
In Osaka, in May, it is raining for 10 days, with typically 146mm (5.75") of accumulated precipitation. Throughout the year, in Osaka, there are 98.1 rainfall days, and 1279mm (50.35") of precipitation is accumulated.Snowfall
In Osaka, snow does not fall in March through December.Sea temperature
In May, the average sea temperature is 18.4°C (65.1°F).Note: A surface water temperature of 18.4°C (65.1°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).
Daylight
In Osaka, the average length of the day in May is 13h and 59min.On the first day of May, sunrise is at 05:07 and sunset at 18:42. On the last day of the month, sunrise is at 04:46 and sunset at 19:05 JST.
Sunshine
In May, the average sunshine in Osaka is 6.3h.UV index
The average daily maximum UV index in May is 9. A UV Index reading of 8 to 10 represents a very high health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 9 during May translates into these guidelines:
Be constantly cautious; skin and eyes can be quickly affected if left unprotected. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Osaka, Japan
- Average high temperature in May: 24.5°C
The warmest month (with the highest average high temperature) is August (33.4°C).
The month with the lowest average high temperature is January (9.5°C).
- Average low temperature in May: 15.6°C
The month with the highest average low temperature is August (25.4°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).
Average humidity in May
Osaka, Japan
- Average humidity in May: 62%
The month with the highest relative humidity is July (70%).
The months with the lowest relative humidity are March and April (59%).
Average rainfall in May
Osaka, Japan
- Average rainfall in May: 145.5mm
The wettest month (with the highest rainfall) is June (184.5mm).
The driest month (with the least rainfall) is December (43.8mm).
Average rainfall days in May
Osaka, Japan
- Average rainfall days in May: 10 days
The month with the highest number of rainy days is June (11.2 days).
The month with the least rainy days is December (5.5 days).
Average snowfall in May
Osaka, Japan
- Average snowfall in May: 0mm
The months with the highest snowfall are January and February (10mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in May
Osaka, Japan
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in May
Osaka, Japan
- Average sea temperature in May: 18.4°C
The best month for swimming (with the highest average sea temperature) is August (27.7°C).
The coldest months (with the lowest average sea temperature) are February and March (13.9°C).
Average daylight in May /
Average sunshine in May
Osaka, Japan
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 6h and 18min
The month with the most sunshine is August (Average sunshine: 7h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average UV index in May
Osaka, Japan
- Average UV index in May: 9
The month with the highest UV index is July (UV index 11).
The month with the lowest UV index is December (UV index 2).
