Ōsaka is at its most pleasant from mid April to mid June, and again from October to early November. For sun, aim for late June; for walking, go from March to mid May.
When to go five ratings · thirty-six ten-day sections · click a cell to read it
The sun season here falls in late June. It peaks in late June, at 61. That is a short window, about three weeks a year. The weakest stretch is from late October to mid April, when it drops to 0, mostly because it is too cool. The clearest skies come in November, when the sky is typically 59% covered at midday (partly cloudy).
For being outside, go from mid April to mid June, with a second spell from October to early November. It peaks in mid May, at 85. Avoid mid December to early February for this: it falls to 0, mostly because it is too cold.
The walking season here runs from March to mid May, with a second spell from mid October to early December. It peaks in early November, at 84. The weakest stretch is from late June to early September, when it drops to 0, mostly because it is too warm.
The year, measured
The average temperature in Ōsaka over the whole year is 17°C. August is the hottest month, with highs of about 32°C; January is the coldest, with lows of about 4°C. Ōsaka has no sharply defined rainy season: the chance of rain on a given day runs from 8% in December, the driest month, to 20% in September, the wettest. Winds in Ōsaka are highest in February, averaging 3.0 m/s (11 km/h), and lightest in November, at 2.5 m/s (9 km/h). The prevailing wind is from the W. The clearest skies in Ōsaka come in November, when the sky is typically 55% covered; June is the cloudiest month, at 72%.
Month by month Ōsaka climate by month: average temperatures year round · click a month to read it
| Month | High | Low | Feels like | Chance of rain | Cloud | Wind | Being outside | Sun | Walking |
|---|---|---|---|---|---|---|---|---|---|
| January | 8°C | 4°C | 4°C | 8% | 59% | 2.9 m/s | 0 | 0 | 28 |
| February | 9°C | 4°C | 4°C | 11% | 61% | 3.0 m/s | 2 | 0 | 31 |
| March | 13°C | 8°C | 9°C | 16% | 61% | 3.0 m/s | 18 | 0 | 64 |
| April | 18°C | 13°C | 16°C | 17% | 63% | 3.0 m/s | 58 | 3 | 79 |
| May | 23°C | 17°C | 21°C | 16% | 66% | 2.8 m/s | 82 | 21 | 58 |
| June | 26°C | 21°C | 27°C | 19% | 72% | 2.7 m/s | 54 | 53 | 19 |
| July | 30°C | 26°C | 33°C | 19% | 71% | 2.7 m/s | 6 | 37 | 1 |
| August | 32°C | 27°C | 35°C | 13% | 63% | 3.0 m/s | 3 | 25 | 1 |
| September | 28°C | 24°C | 30°C | 20% | 71% | 2.7 m/s | 30 | 52 | 8 |
| October | 22°C | 17°C | 21°C | 16% | 64% | 2.7 m/s | 73 | 23 | 58 |
| November | 17°C | 11°C | 14°C | 10% | 55% | 2.5 m/s | 48 | 1 | 82 |
| December | 11°C | 6°C | 7°C | 8% | 58% | 2.9 m/s | 5 | 0 | 50 |
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Ōsaka weather by season
Year round, Ōsaka has days of about 8°C at their warmest in January, its coolest month, and 32°C in August, its warmest; the coolest hours of the day run from 4°C to 27°C through the year, and the average temperature over the year is 17°C around the clock. Rain is most likely around September and least likely around December. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Ōsaka weather in winterDecember to February
Winter in Ōsaka has typical daily highs of about 9°C and lows of about 5°C, with a 9% chance of rain on a given day.
Ōsaka weather in springMarch to May
Spring in Ōsaka has typical daily highs of about 18°C and lows of about 13°C, with a 16% chance of rain on a given day.
Ōsaka weather in summerJune to August
Summer in Ōsaka has typical daily highs of about 30°C and lows of about 25°C, with a 17% chance of rain on a given day.
Ōsaka weather in autumnSeptember to November
Autumn in Ōsaka has typical daily highs of about 22°C and lows of about 17°C, with a 15% chance of rain on a given day.
When is the rainy season in Ōsaka?
Ōsaka has no sharply defined rainy season: the chance of rain on a given day runs from 8% in December, the driest month, to 20% in September, the wettest.
What time of year is Ōsaka windiest?
Winds in Ōsaka are highest in February, averaging 3.0 m/s (11 km/h), and lightest in November, at 2.5 m/s (9 km/h). The prevailing wind is from the W.
What is the average temperature in Ōsaka year round?
The average temperature in Ōsaka over the whole year is 17°C. August is the hottest month, with highs of about 32°C; January is the coldest, with lows of about 4°C.
Where to go instead in early January, the weakest time here for being outside
How this is worked out
Every figure is a decade of weather-station observations blended into one typical year, in ten-day sections. The ratings, the chart and the feels-like column are read at midday local solar time. Being outside is the Easy outdoors rating, Sun is Sunbathing and Walking is Active outdoors, each out of 100: Good from 55, Ideal from 80. They describe what a time of year is usually like here, not a forecast. The dotted links open the map at that time of year; set its time of day to midday to see these numbers.