London is 2.9°C (5.2°F) warmer by day, and both get similar annual rainfall.
London is at its warmest in July and coolest in February, while Toronto peaks in July and bottoms out in January. Month for month, London is the warmer of the two in 8 of 12 months.
Both collect a similar amount of rain over the year — 705 mm (27.8 in) in London and 685 mm (27 in) in Toronto. The most comfortable time to visit is June, July and August in London and July, August and September in Toronto.
| London | Metric | Toronto |
|---|---|---|
| 🌡️ Temperature | ||
| 14.3°C | 🌡️Average daytime high | 11.4°C |
| 6.2°C | 🌙Average nighttime low | 5.4°C |
| July | 🔥Hottest month | July |
| February | ❄️Coldest month | January |
| 🌧️ Rain | ||
| 705 mm | 🌧️Annual rainfall | 685 mm |
| October | ☔Wettest month | July |
| April | 🏜️Driest month | February |
| 💨 Climate | ||
| 85% | 💧Average humidity | 78% |
| 3.4 m/s | 💨Average wind speed | 4.1 m/s |
Overnight, London typically falls to around 6.2°C (43.2°F) while Toronto settles near 5.4°C (41.7°F).
London is hottest in July and coldest in February, whereas Toronto peaks in July and is coolest in January.
London sees the most rain in October and the least in April; Toronto is wettest in July and driest in February.
London feels the more humid of the two, averaging 85% relative humidity against 78%.
For Toronto, the pick of the year is July, August 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 | Toronto | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 1.3 | 4❄️ | 6.7 | -5.7 | -3.2❄️ | -0.7 |
| February | 1.2 | 4.4 | 7.5 | -5.7 | -2.9 | -0.1 |
| March | 2.5 | 6.5 | 10.4 | -2.5 | 0.6 | 3.7 |
| April | 4 | 8.7 | 13.3 | 2 | 5.5 | 8.9 |
| May | 7.1 | 11.9 | 16.7 | 7.4 | 11.1 | 14.8 |
| June | 10 | 14.9 | 19.9 | 13.2 | 16.8 | 20.5 |
| July | 12.3 | 17.4🔥 | 22.4 | 17.1 | 20.6🔥 | 24.1 |
| August | 12.3 | 17.3 | 22.4 | 17.1 | 20.4 | 23.6 |
| September | 10.1 | 14.8 | 19.5 | 13.8 | 16.9 | 20 |
| October | 7.5 | 11.3 | 15.1 | 7.9 | 10.7 | 13.4 |
| November | 4.3 | 7.2 | 10.2 | 2.3 | 4.7 | 7.1 |
| December | 2.4 | 4.9 | 7.3 | -2.3 | -0.1 | 2 |
| Annual Avg | 6.3 | 10.3 | 14.3 | 5.4 | 8.4 | 11.4 |
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 Toronto feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. London Toronto
See how London and Toronto 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 Toronto — each drawn straight from the climate figures above.
London is the warmer of the two. It averages daytime highs of 14.3°C (57.7°F) against 11.4°C (52.5°F) in Toronto — roughly 2.9°C (5.2°F) warmer by day. Nights are milder in London, with average lows of 6.2°C (43.2°F) versus 5.4°C (41.7°F).
London is hottest in July, averaging highs of about 22.4°C (72.4°F), while Toronto peaks in July at around 24.1°C (75.3°F). That makes Toronto the hotter of the two at the height of summer.
Toronto gets colder. In its coldest month (January) overnight lows average about -5.7°C (21.7°F), compared with 1.2°C (34.2°F) at the low point of the year in London.
They get a similar amount of rain over a year — about 705 mm (27.8 in) in London and 685 mm (27 in) in Toronto. London is wettest in October and driest in April; Toronto is wettest in July and driest in February.
London is the more humid of the two, averaging 85% relative humidity over the year against 78% in Toronto.
The most comfortable months in London are June, July and August, when average temperatures are at their mildest.
Toronto is at its most pleasant around July, August and September, based on the mildest average temperatures of the year.
London is the warmer city in 8 of the 12 months of the year. The gap is widest in February, about 7.3°C (13.1°F), and narrowest in October, about 0.6°C (1.1°F).
Toronto has the bigger seasonal swing, about 23.8°C (42.8°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 London for warmer weather and go for Toronto if you want lower humidity. 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 Toronto, not a single year's weather or a short-range forecast.
