Chennai is 2°C (3.6°F) warmer by day, Chennai has 7°C (12.6°F) warmer nights, Chennai gets 390 mm (15.4 in) more rain a year.
Bangalore is at its warmest in April and coolest in January, while Chennai peaks in May and bottoms out in January. Month for month, Chennai is the warmer of the two in 12 of 12 months.
Chennai is the wetter of the two, collecting 1,244 mm (49 in) of rain a year against 854 mm (33.6 in) in Bangalore. The most comfortable time to visit is January, November and December in Bangalore and January, November and December in Chennai.
| Bangalore | Metric | Chennai |
|---|---|---|
| 🌡️ Temperature | ||
| 32.9°C | 🌡️Average daytime high | 34.9°C |
| 15.6°C | 🌙Average nighttime low | 22.6°C |
| April | 🔥Hottest month | May |
| January | ❄️Coldest month | January |
| 🌧️ Rain | ||
| 854 mm | 🌧️Annual rainfall | 1,244 mm |
| September | ☔Wettest month | November |
| January | 🏜️Driest month | March |
| 💨 Climate | ||
| 68% | 💧Average humidity | 72% |
| 2.9 m/s | 💨Average wind speed | 3.2 m/s |
Overnight, Bangalore typically falls to around 15.6°C (60.1°F) while Chennai settles near 22.6°C (72.7°F).
Bangalore is hottest in April and coldest in January, whereas Chennai peaks in May and is coolest in January.
Bangalore sees the most rain in September and the least in January; Chennai is wettest in November and driest in March.
Chennai feels the more humid of the two, averaging 72% relative humidity against 68%.
For Chennai, the pick of the year is January, November and December.
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 | Bangalore | Chennai | ||||
|---|---|---|---|---|---|---|
| Min | Avg | Max | Min | Avg | Max | |
| January | 10.9 | 21.4 | 31.8 | 18.9 | 24.3 | 29.8 |
| February | 12.1 | 23.6 | 35.2 | 19.5 | 26.4 | 33.4 |
| March | 14.6 | 26.2 | 37.7 | 21.2 | 29.3 | 37.3 |
| April | 18.4 | 28.6 | 38.9 | 24.2 | 31.8 | 39.5 |
| May | 19.7 | 28.7🔥 | 37.7 | 26 | 33.3🔥 | 40.5 |
| June | 18.3 | 25.8 | 33.2 | 25.1 | 31.8 | 38.4 |
| July | 18 | 24.6 | 31.2 | 24.5 | 30.8 | 37 |
| August | 18.1 | 24.5 | 30.9 | 24.3 | 30.2 | 36.2 |
| September | 17.5 | 24 | 30.6 | 23.8 | 29.2 | 34.7 |
| October | 15.6 | 22.5 | 29.5 | 23 | 28 | 33.1 |
| November | 12.8 | 20.8 | 28.8 | 20.8 | 25.5 | 30.3 |
| December | 10.9 | 20.1❄️ | 29.2 | 19.6 | 24.2❄️ | 28.8 |
| Annual Avg | 15.6 | 24.2 | 32.9 | 22.6 | 28.7 | 34.9 |
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 Bangalore and Chennai feel alike; where they separate, they are genuinely different places to be.
Hover or tap any point to read the exact figures. Bangalore Chennai
See how Bangalore and Chennai 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 Bangalore and Chennai — each drawn straight from the climate figures above.
Chennai is the warmer of the two. It averages daytime highs of 34.9°C (94.8°F) against 32.9°C (91.2°F) in Bangalore — roughly 2°C (3.6°F) warmer by day. Nights are milder in Chennai, with average lows of 22.6°C (72.7°F) versus 15.6°C (60.1°F).
Bangalore is hottest in April, averaging highs of about 38.9°C (101.9°F), while Chennai peaks in May at around 40.5°C (105°F). That makes Chennai the hotter of the two at the height of summer.
Bangalore gets colder. In its coldest month (January) overnight lows average about 10.9°C (51.7°F), compared with 18.9°C (66°F) at the low point of the year in Chennai.
Chennai is the wetter city, collecting about 1,244 mm (49 in) of rain a year versus 854 mm (33.6 in) in Bangalore. Bangalore is wettest in September and driest in January; Chennai is wettest in November and driest in March.
Chennai is the more humid of the two, averaging 72% relative humidity over the year against 68% in Bangalore.
The most comfortable months in Bangalore are January, November and December, when average temperatures are at their mildest.
Chennai is at its most pleasant around January, November and December, based on the mildest average temperatures of the year.
Chennai is the warmer city in all 12 months of the year. The gap is widest in July, about 6.2°C (11.2°F), and narrowest in February, about 2.8°C (5°F).
Both have a similar seasonal range — around 9.1°C (16.4°F) between the coldest and hottest months — so neither climate is noticeably more extreme than the other.
It depends what matters most to you: choose Chennai for warmer weather, pick Bangalore if you prefer drier conditions and go for Bangalore 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 Bangalore and Chennai, not a single year's weather or a short-range forecast.
