January 10° · ☂ 5 February 11° · ☂ 6 March 15° · ☂ 10 April 20° · ☂ 9 ★ May25° · ☂ 9 June 28° · ☂ 11 July 32° · ☂ 11 August 34° · ☂ 8 September 30° · ☂ 10 ★ October24° · ☂ 9 November 18° · ☂ 6 December 12° · ☂ 6 Osaka in May:comfortably warm, Osaka, Japan · Records from 2006 to 2025. Not a forecast.
Mean high 25° Hottest day 31.9° (2015)
Mean low 16° Coldest night 8.5° (2013)
Rain days 9 days 6-14 by year
Rainfall 149mm Daylight 13.6 → 14.3 h
Osaka's 12 months i Best: May and October
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Sightseeing on foot Goodmild
Humidity 66% 0 muggy days
Clear days 5 days 13 overcast days
Mean wind 8 km/h Rarely windy
Sunrise / sunset (15th) 04:55 / 18:53 Daylight 13.6 → 14.3 h
Osaka in May The first days are busy with Golden Week, then bright, comfortable days follow. It is the tail end of spring, with long days and good sun. Sunshine gets stronger toward the end of the month, so a hat or sunscreen is useful.
May in Osaka was on the warm side, averaging 25°C by day and 16°C at night. There were 9 rain days on average, roughly one day in three. Individual years ran between 6 and 14 rain days.
Not every year was typical: 2015 ran 2.2°C warmer than the mean, with highs of 27.0°C. Rain days averaged 16 mm each, so when it rained it rained properly.
Typhoons i Typhoons: June to October
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
May 1 Saturday 1 rain in 6 of 20 yrs 6/20 23° 14° May 1 rain on 30% of days 23° 14°
May 2 Sunday 2 rain in 5 of 20 yrs 5/20 23° 14° May 3 Monday 3 rain in 4 of 20 yrs 4/20 24° 13° May 4 Tuesday 4 rain in 3 of 20 yrs 3/20 24° 14° May 5 Wednesday 5 rain in 4 of 20 yrs 4/20 24° 15° May 6 Thursday 6 rain in 10 of 20 yrs 10/20 24° 15° May 7 Friday 7 rain in 6 of 20 yrs 6/20 23° 15° May 8 Saturday 8 rain in 3 of 20 yrs 3/20 24° 14° 2-8 rain on 25% of days 24° 14°
May 9 Sunday 9 rain in 6 of 20 yrs 6/20 24° 15° May 10 Monday 10 rain in 10 of 20 yrs 10/20 23° 15° May 11 Tuesday 11 rain in 8 of 20 yrs 8/20 24° 15° May 12 Wednesday 12 rain in 8 of 20 yrs 8/20 24° 14° May 13 Thursday 13 rain in 10 of 20 yrs 10/20 24° 15° May 14 Friday 14 rain in 5 of 20 yrs 5/20 25° 15° May 15 Saturday 15 rain in 4 of 20 yrs 4/20 25° 15° 9-15 rain on 36% of days 24° 15°
May 16 Sunday 16 rain in 6 of 20 yrs 6/20 24° 16° May 17 Monday 17 rain in 7 of 20 yrs 7/20 25° 17° May 18 Tuesday 18 rain in 5 of 20 yrs 5/20 26° 16° May 19 Wednesday 19 rain in 11 of 20 yrs 11/20 25° 17° May 20 Thursday 20 rain in 7 of 20 yrs 7/20 26° 17° May 21 Friday 21 rain in 4 of 20 yrs 4/20 26° 17° May 22 Saturday 22 rain in 3 of 20 yrs 3/20 27° 17° 16-22 rain on 31% of days 26° 17°
May 23 Sunday 23 rain in 4 of 20 yrs 4/20 26° 17° May 24 Monday 24 rain in 6 of 20 yrs 6/20 26° 17° May 25 Tuesday 25 rain in 5 of 20 yrs 5/20 26° 18° May 26 Wednesday 26 rain in 6 of 20 yrs 6/20 26° 18° May 27 Thursday 27 rain in 4 of 20 yrs 4/20 26° 18° May 28 Friday 28 rain in 7 of 20 yrs 7/20 26° 18° May 29 Saturday 29 rain in 7 of 20 yrs 7/20 26° 18° 23-29 rain on 28% of days 26° 18°
May 30 Sunday 30 rain in 9 of 20 yrs 9/20 26° 18° May 31 Monday 31 rain in 6 of 20 yrs 6/20 26° 18°
30-31 rain on 38% of days 26° 18°
May 1 rain on 30% of days 23° 14° 2-8 rain on 25% of days 24° 14° 9-15 rain on 36% of days 24° 15° 16-22 rain on 31% of days 26° 17° 23-29 rain on 28% of days 26° 18° 30-31 rain on 38% of days 26° 18°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
May 1 Monday 1 rain in 6 of 20 yrs 6/20 23° 14° May 2 Tuesday 2 rain in 5 of 20 yrs 5/20 23° 14° May 3 Wednesday 3 rain in 4 of 20 yrs 4/20 24° 13° May 4 Thursday 4 rain in 3 of 20 yrs 3/20 24° 14° May 5 Friday 5 rain in 4 of 20 yrs 4/20 24° 15° May 6 Saturday 6 rain in 10 of 20 yrs 10/20 24° 15° 1-6 rain on 27% of days 24° 14°
May 7 Sunday 7 rain in 6 of 20 yrs 6/20 23° 15° May 8 Monday 8 rain in 3 of 20 yrs 3/20 24° 14° May 9 Tuesday 9 rain in 6 of 20 yrs 6/20 24° 15° May 10 Wednesday 10 rain in 10 of 20 yrs 10/20 23° 15° May 11 Thursday 11 rain in 8 of 20 yrs 8/20 24° 15° May 12 Friday 12 rain in 8 of 20 yrs 8/20 24° 14° May 13 Saturday 13 rain in 10 of 20 yrs 10/20 24° 15° 7-13 rain on 36% of days 24° 15°
May 14 Sunday 14 rain in 5 of 20 yrs 5/20 25° 15° May 15 Monday 15 rain in 4 of 20 yrs 4/20 25° 15° May 16 Tuesday 16 rain in 6 of 20 yrs 6/20 24° 16° May 17 Wednesday 17 rain in 7 of 20 yrs 7/20 25° 17° May 18 Thursday 18 rain in 5 of 20 yrs 5/20 26° 16° May 19 Friday 19 rain in 11 of 20 yrs 11/20 25° 17° May 20 Saturday 20 rain in 7 of 20 yrs 7/20 26° 17° 14-20 rain on 32% of days 25° 16°
May 21 Sunday 21 rain in 4 of 20 yrs 4/20 26° 17° May 22 Monday 22 rain in 3 of 20 yrs 3/20 27° 17° May 23 Tuesday 23 rain in 4 of 20 yrs 4/20 26° 17° May 24 Wednesday 24 rain in 6 of 20 yrs 6/20 26° 17° May 25 Thursday 25 rain in 5 of 20 yrs 5/20 26° 18° May 26 Friday 26 rain in 6 of 20 yrs 6/20 26° 18° May 27 Saturday 27 rain in 4 of 20 yrs 4/20 26° 18° 21-27 rain on 23% of days 26° 17°
May 28 Sunday 28 rain in 7 of 20 yrs 7/20 26° 18° May 29 Monday 29 rain in 7 of 20 yrs 7/20 26° 18° May 30 Tuesday 30 rain in 9 of 20 yrs 9/20 26° 18° May 31 Wednesday 31 rain in 6 of 20 yrs 6/20 26° 18°
28-31 rain on 36% of days 26° 18°
1-6 rain on 27% of days 24° 14° 7-13 rain on 36% of days 24° 15° 14-20 rain on 32% of days 25° 16° 21-27 rain on 23% of days 26° 17° 28-31 rain on 36% of days 26° 18°
Tap another date to change
2006 15mm
2007 6mm
2008 9mm
2009 none
2010 18mm
2011 none
2012 none
2013 12mm
2014 none
2015 9mm
2016 none
2017 none
2018 10mm
2019 none
2020 14mm
2021 8mm
2022 none
2023 26mm
2024 11mm
2025 none
Holidays in May (2027) April 29 to May 5 Golden WeekMay 3 Constitution Memorial DayMay 4 Greenery DayMay 5 Children's DayMay 31 Memorial Day 1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)
Day by day temperature i 12° 19° 26° 33° 1 8 15 22 29 31
Your trip dates, the past 20 years Trip dates May 1 (Sat) 2 (Sun) 3 (Mon) 4 (Tue) 5 (Wed) 6 (Thu) 7 (Fri) 8 (Sat) 9 (Sun) 10 (Mon) 11 (Tue) 12 (Wed) 13 (Thu) 14 (Fri) 15 (Sat) 16 (Sun) 17 (Mon) 18 (Tue) 19 (Wed) 20 (Thu) 21 (Fri) 22 (Sat) 23 (Sun) 24 (Mon) 25 (Tue) 26 (Wed) 27 (Thu) 28 (Fri) 29 (Sat) 30 (Sun) 31 (Mon) ~ May 1 (Sat) 2 (Sun) 3 (Mon) 4 (Tue) 5 (Wed) 6 (Thu) 7 (Fri) 8 (Sat) 9 (Sun) 10 (Mon) 11 (Tue) 12 (Wed) 13 (Thu) 14 (Fri) 15 (Sat) 16 (Sun) 17 (Mon) 18 (Tue) 19 (Wed) 20 (Thu) 21 (Fri) 22 (Sat) 23 (Sun) 24 (Mon) 25 (Tue) 26 (Wed) 27 (Thu) 28 (Fri) 29 (Sat) 30 (Sun) 31 (Mon) 1-7 8-14 15-21 22-end Whole month
You can also click two dates on the axis. Hover a cell to see that day's rain. By year Driest trips first
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Trip rain days Month rain days Tap a date to start, tap another to end. Each cell is that date in one year. '06 '07 '08 '09 '10 '11 '12 '13 '14 '15 '16 '17 '18 '19 '20 '21 '22 '23 '24 '25
of 20 Dates outside your trip are dimmed.
One row per year, one cell per day. 2012 had 6 rain days, 2006 had 14.
Common questions Does it rain a lot in Osaka in May? Over the past 20 years May averaged 9 rain days (1 mm or more) out of 31. Individual years ran from 6 in the driest to 14 in the wettest.
What should I wear in Osaka in May? Days averaged 25°C and nights 16°C. Pack a compact umbrella, a light layer for the evenings, T-shirts, and sunscreen plus a hat.
Is May a good time to visit Osaka? On warmth and rain days alone, Osaka's easiest months were May and October. May ranked 2 of 12, close to the top.
How many clear days does Osaka get in May? About 5 clear days (under 30% cloud on average) and 13 overcast days (80% or more).
Previous month Osaka in April Next month Osaka in June Whole year Osaka weather by month Where to go May By country Japan: all cities this month Compare Compare with Tokyo Compare Compare with Fukuoka