Yokohama and Ōsaka have similar daytime temperatures, Ōsaka gets 175 mm (6.9 in) more rain a year.
Yokohama is at its warmest in August and coolest in January, while Ōsaka peaks in August and bottoms out in January. Month for month, Yokohama is the warmer of the two in 6 of 10 months.
Ōsaka is the wetter of the two, collecting 1,719 mm (67.7 in) of rain a year against 1,544 mm (60.8 in) in Yokohama. The most comfortable time to visit is June, July and September in Yokohama and May, June and September in Ōsaka.
| Yokohama | Metric | Ōsaka |
|---|---|---|
| 🌡️ Temperature | ||
| 18.9°C | 🌡️Average daytime high | 18.5°C |
| 9.4°C | 🌙Average nighttime low | 9.7°C |
| August | 🔥Hottest month | August |
| January | ❄️Coldest month | January |
| 🌧️ Rain | ||
| 1,544 mm | 🌧️Annual rainfall | 1,719 mm |
| September | ☔Wettest month | June |
| December | 🏜️Driest month | January |
| 💨 Climate | ||
| 80% | 💧Average humidity | 82% |
| 2.5 m/s | 💨Average wind speed | 1.8 m/s |
Overnight, Yokohama typically falls to around 9.4°C (48.9°F) while Ōsaka settles near 9.7°C (49.5°F).
Yokohama is hottest in August and coldest in January, whereas Ōsaka peaks in August and is coolest in January.
Yokohama sees the most rain in September and the least in December; Ōsaka is wettest in June and driest in January.
Ōsaka feels the more humid of the two, averaging 82% relative humidity against 80%.
For Ōsaka, the pick of the year is May, June and September.
Month by month, here is the coldest night, the average day and the hottest afternoon each city can expect. Switch Compare to read rainfall, humidity, wind or solar instead, and Period to move between the long-term 45-year average and any single year — the shading is a quick warm-to-cool guide.
| Month | Yokohama | Ōsaka | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | -1.8 | 3❄️ | 7.8 | -0.9 | 2.9❄️ | 6.7 |
| February | -1.4 | 3.7 | 8.7 | -0.7 | 3.6 | 7.8 |
| March | 1.4 | 7 | 12.5 | 1.8 | 6.9 | 12 |
| April | 6.7 | 12.2 | 17.7 | 6.7 | 12.2 | 17.6 |
| May | 12 | 17 | 22.1 | 11.7 | 16.9 | 22.1 |
| June | 16.6 | 20.9 | 25.2 | 16.6 | 21 | 25.4 |
| July | 20.9 | 24.9 | 28.9 | 21.3 | 25.1 | 28.9 |
| August | 22.1 | 26.2🔥 | 30.2 | 22 | 26🔥 | 29.9 |
| September | 18.5 | 22.4 | 26.4 | 18.4 | 22.5 | 26.5 |
| October | 11.9 | 16.2 | 20.6 | 11.9 | 16.3 | 20.8 |
| November | 5.7 | 10.7 | 15.7 | 6.2 | 10.7 | 15.2 |
| December | 0.5 | 5.6 | 10.6 | 1.3 | 5.4 | 9.5 |
| Annual Avg | 9.4 | 14.1 | 18.9 | 9.7 | 14.1 | 18.5 |
Min / mean / max temperature (°C). 🔥 marks each city's hottest month, ❄️ its coldest; shading runs cool blue to warm red.
The same figures plotted out, so the shape of a typical year is easier to see than in a grid. Where the two lines run close together Yokohama and Ōsaka feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Yokohama Ōsaka
See how Yokohama and Ōsaka stack up against other cities. Swipe for more.
Choose which city to keep, then search for any other city in our database — we'll build the comparison for you.
Quick answers to the questions people ask most when comparing Yokohama and Ōsaka — each drawn straight from the climate figures above.
Yokohama and Ōsaka are about equally warm. Daytime highs average 18.9°C (66°F) in Yokohama and 18.5°C (65.3°F) in Ōsaka, so neither is clearly the warmer choice over the year.
Yokohama is hottest in August, averaging highs of about 30.2°C (86.4°F), while Ōsaka peaks in August at around 29.9°C (85.9°F). That makes Yokohama the hotter of the two at the height of summer.
Yokohama gets colder. In its coldest month (January) overnight lows average about -1.8°C (28.8°F), compared with -0.9°C (30.5°F) at the low point of the year in Ōsaka.
Ōsaka is the wetter city, collecting about 1,719 mm (67.7 in) of rain a year versus 1,544 mm (60.8 in) in Yokohama. Yokohama is wettest in September and driest in December; Ōsaka is wettest in June and driest in January.
Ōsaka is the more humid of the two, averaging 82% relative humidity over the year against 80% in Yokohama.
The most comfortable months in Yokohama are June, July and September, when average temperatures are at their mildest.
Ōsaka is at its most pleasant around May, June and September, based on the mildest average temperatures of the year.
Yokohama is the warmer city in 6 of the 10 months of the year. The gap is widest in July, about 0.2°C (0.4°F), and narrowest in April, about 0°C (0°F).
Both have a similar seasonal range — around 23.2°C (41.8°F) between the coldest and hottest months — so neither climate is noticeably more extreme than the other.
On climate alone, Yokohama comes out ahead — it offers less rain than Ōsaka. Ōsaka is the better fit only if you'd actually prefer more rainfall.
Every figure on this page is calculated from NASA POWER satellite climate data spanning 1981–2025 (45 years). The averages describe the long-term climate of Yokohama and Ōsaka, not a single year's weather or a short-range forecast.
