Ōsaka is 4.2°C (7.6°F) warmer by day, Ōsaka has 3.5°C (6.3°F) warmer nights, Ōsaka gets 1,014 mm (39.9 in) more rain a year.
London is at its warmest in July and coolest in February, while Ōsaka peaks in August and bottoms out in January. Month for month, Ōsaka is the warmer of the two in 10 of 12 months.
Ōsaka is the wetter of the two, collecting 1,719 mm (67.7 in) of rain a year against 705 mm (27.8 in) in London. The most comfortable time to visit is June, July and August in London and May, June and September in Ōsaka.
| London | Metric | Ōsaka |
|---|---|---|
| 🌡️ Temperature | ||
| 14.3°C | 🌡️Average daytime high | 18.5°C |
| 6.2°C | 🌙Average nighttime low | 9.7°C |
| July | 🔥Hottest month | August |
| February | ❄️Coldest month | January |
| 🌧️ Rain | ||
| 705 mm | 🌧️Annual rainfall | 1,719 mm |
| October | ☔Wettest month | June |
| April | 🏜️Driest month | January |
| 💨 Climate | ||
| 85% | 💧Average humidity | 82% |
| 3.4 m/s | 💨Average wind speed | 1.8 m/s |
Overnight, London typically falls to around 6.2°C (43.2°F) while Ōsaka settles near 9.7°C (49.5°F).
London is hottest in July and coldest in February, whereas Ōsaka peaks in August and is coolest in January.
London sees the most rain in October and the least in April; Ōsaka is wettest in June and driest in January.
London feels the more humid of the two, averaging 85% relative humidity against 82%.
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 | London | Ōsaka | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 1.3 | 4❄️ | 6.7 | -0.9 | 2.9❄️ | 6.7 |
| February | 1.2 | 4.4 | 7.5 | -0.7 | 3.6 | 7.8 |
| March | 2.5 | 6.5 | 10.4 | 1.8 | 6.9 | 12 |
| April | 4 | 8.7 | 13.3 | 6.7 | 12.2 | 17.6 |
| May | 7.1 | 11.9 | 16.7 | 11.7 | 16.9 | 22.1 |
| June | 10 | 14.9 | 19.9 | 16.6 | 21 | 25.4 |
| July | 12.3 | 17.4🔥 | 22.4 | 21.3 | 25.1 | 28.9 |
| August | 12.3 | 17.3 | 22.4 | 22 | 26🔥 | 29.9 |
| September | 10.1 | 14.8 | 19.5 | 18.4 | 22.5 | 26.5 |
| October | 7.5 | 11.3 | 15.1 | 11.9 | 16.3 | 20.8 |
| November | 4.3 | 7.2 | 10.2 | 6.2 | 10.7 | 15.2 |
| December | 2.4 | 4.9 | 7.3 | 1.3 | 5.4 | 9.5 |
| Annual Avg | 6.3 | 10.3 | 14.3 | 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 London and Ōsaka feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. London Ōsaka
See how London 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 London and Ōsaka — each drawn straight from the climate figures above.
Ōsaka is the warmer of the two. It averages daytime highs of 18.5°C (65.3°F) against 14.3°C (57.7°F) in London — roughly 4.2°C (7.6°F) warmer by day. Nights are milder in Ōsaka, with average lows of 9.7°C (49.5°F) versus 6.2°C (43.2°F).
London is hottest in July, averaging highs of about 22.4°C (72.4°F), while Ōsaka peaks in August at around 29.9°C (85.9°F). That makes Ōsaka the hotter of the two at the height of summer.
Ōsaka gets colder. In its coldest month (January) overnight lows average about -0.9°C (30.5°F), compared with 1.2°C (34.2°F) at the low point of the year in London.
Ōsaka is the wetter city, collecting about 1,719 mm (67.7 in) of rain a year versus 705 mm (27.8 in) in London. London is wettest in October and driest in April; Ōsaka is wettest in June and driest in January.
London is the more humid of the two, averaging 85% relative humidity over the year against 82% in Ōsaka.
The most comfortable months in London are June, July and August, 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.
Ōsaka is the warmer city in 10 of the 12 months of the year. The gap is widest in August, about 8.7°C (15.7°F), and narrowest in March, about 0.4°C (0.7°F).
Ōsaka has the bigger seasonal swing, about 23.1°C (41.6°F) between its coldest and hottest months versus 13.4°C (24.1°F) in London — so London has the steadier, more even climate.
It depends what matters most to you: choose Ōsaka for warmer weather and pick London if you prefer drier conditions. There is no single "better" climate — it comes down to whether you value warmth, dryness or comfort most.
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 London and Ōsaka, not a single year's weather or a short-range forecast.
