Adelaide is 7.2°C (13°F) warmer by day, Adelaide has 4.5°C (8.1°F) warmer nights, London gets 252 mm (9.9 in) more rain a year.
Adelaide is at its warmest in January and coolest in July, while London peaks in July and bottoms out in February. Month for month, Adelaide is the warmer of the two in 8 of 12 months.
London is the wetter of the two, collecting 705 mm (27.8 in) of rain a year against 453 mm (17.8 in) in Adelaide. The most comfortable time to visit is January, March and December in Adelaide and June, July and August in London.
| Adelaide | Metric | London |
|---|---|---|
| 🌡️ Temperature | ||
| 21.5°C | 🌡️Average daytime high | 14.3°C |
| 10.7°C | 🌙Average nighttime low | 6.2°C |
| January | 🔥Hottest month | July |
| July | ❄️Coldest month | February |
| 🌧️ Rain | ||
| 453 mm | 🌧️Annual rainfall | 705 mm |
| July | ☔Wettest month | October |
| February | 🏜️Driest month | April |
| 💨 Climate | ||
| 65% | 💧Average humidity | 85% |
| 2.8 m/s | 💨Average wind speed | 3.4 m/s |
Overnight, Adelaide typically falls to around 10.7°C (51.3°F) while London settles near 6.2°C (43.2°F).
Adelaide is hottest in January and coldest in July, whereas London peaks in July and is coolest in February.
Adelaide sees the most rain in July and the least in February; London is wettest in October and driest in April.
London feels the more humid of the two, averaging 85% relative humidity against 65%.
For London, the pick of the year is June, July and August.
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 | Adelaide | London | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 15.4 | 22.3🔥 | 29.3 | 1.3 | 4❄️ | 6.7 |
| February | 15.5 | 22.3 | 29.2 | 1.2 | 4.4 | 7.5 |
| March | 14.1 | 20.2 | 26.4 | 2.5 | 6.5 | 10.4 |
| April | 11.6 | 16.9 | 22.2 | 4 | 8.7 | 13.3 |
| May | 9.4 | 13.7 | 18 | 7.1 | 11.9 | 16.7 |
| June | 7.2 | 11 | 14.8 | 10 | 14.9 | 19.9 |
| July | 6.3 | 10❄️ | 13.8 | 12.3 | 17.4🔥 | 22.4 |
| August | 6.5 | 10.7 | 14.9 | 12.3 | 17.3 | 22.4 |
| September | 7.8 | 12.7 | 17.6 | 10.1 | 14.8 | 19.5 |
| October | 9.4 | 15.1 | 20.9 | 7.5 | 11.3 | 15.1 |
| November | 11.7 | 18 | 24.3 | 4.3 | 7.2 | 10.2 |
| December | 13.6 | 20.2 | 26.9 | 2.4 | 4.9 | 7.3 |
| Annual Avg | 10.7 | 16.1 | 21.5 | 6.3 | 10.3 | 14.3 |
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 Adelaide and London feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Adelaide London
See how Adelaide and London 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 Adelaide and London — each drawn straight from the climate figures above.
Adelaide is the warmer of the two. It averages daytime highs of 21.5°C (70.7°F) against 14.3°C (57.7°F) in London — roughly 7.2°C (13°F) warmer by day. Nights are milder in Adelaide, with average lows of 10.7°C (51.3°F) versus 6.2°C (43.2°F).
Adelaide is hottest in January, averaging highs of about 29.3°C (84.8°F), while London peaks in July at around 22.4°C (72.4°F). That makes Adelaide the hotter of the two at the height of summer.
London gets colder. In its coldest month (February) overnight lows average about 1.2°C (34.2°F), compared with 6.3°C (43.3°F) at the low point of the year in Adelaide.
London is the wetter city, collecting about 705 mm (27.8 in) of rain a year versus 453 mm (17.8 in) in Adelaide. Adelaide is wettest in July and driest in February; London is wettest in October and driest in April.
London is the more humid of the two, averaging 85% relative humidity over the year against 65% in Adelaide.
The most comfortable months in Adelaide are January, March and December, when average temperatures are at their mildest.
London is at its most pleasant around June, July and August, based on the mildest average temperatures of the year.
Adelaide is the warmer city in 8 of the 12 months of the year. The gap is widest in January, about 18.3°C (32.9°F), and narrowest in May, about 1.8°C (3.2°F).
London has the bigger seasonal swing, about 13.4°C (24.1°F) between its coldest and hottest months versus 12.3°C (22.1°F) in Adelaide — so Adelaide has the steadier, more even climate.
On climate alone, Adelaide comes out ahead — it offers warmer days, less rain and lower humidity than London. London is the better fit only if you'd actually prefer cooler weather, more rainfall and a more humid climate.
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 Adelaide and London, not a single year's weather or a short-range forecast.
