Chennai Weather in October
India · Tropical Savanna climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
October in Chennai sees average temperatures ranging from a low of 24.9°C (76.8°F) to a high of 30.9°C (87.6°F), with a mean of 27.7°C (81.9°F). Compared to the annual average of 28.0°C (82.4°F), this month is 0.3°C cooler than the yearly norm. Precipitation averages 215.2mm, making it approximately 86.0mm wetter than the monthly average of 129.0mm. The city receives an average of 9.6 hours of sunshine per day during October, with relative humidity averaging 80.5%. Wind speeds reach an average maximum of 15.4 km/h. For travelers, this month offers a temperature experience in Chennai, with wetter-than-average conditions compared to the rest of the year.
Chennai's climate is defined by its coastal location on the Bay of Bengal. The city receives most of its rainfall during the northeast monsoon from October to December. I found the best time for exploring the city's temples and beaches is January to March, when the weather is dry and temperatures are at their most comfortable. The summer months are intensely hot, with temperatures pushing 40°C.
October vs Adjacent Months
| Metric | September | October | November |
|---|---|---|---|
| Mean Temp | 28.7°C (83.7°F) | 27.7°C (81.9°F) | 26.0°C (78.8°F) |
| Rainfall | 144.4mm | 215.2mm | 443.3mm |
| Sunshine | 9.0 hrs | 9.6 hrs | 7.5 hrs |
| Humidity | 77.2% | 80.5% | 83.9% |
| Wind | 16.9 km/h | 15.4 km/h | 19.1 km/h |
| Rainy Days | 25.4 | 25.6 | 26.2 |
Seasonal Context
October falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Chennai in October, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Chennai in October?
The average temperature in Chennai during October ranges from 24.9°C (76.8°F) to 30.9°C (87.6°F), with a mean of 27.7°C (81.9°F).
How much does it rain in Chennai in October?
Chennai receives an average of 215.2mm of precipitation in October, spread across approximately 25.6 rainy days.
What should I pack for Chennai in October?
Based on October weather data, pack lightweight, breathable clothing, sunscreen, and a hat. Rain gear is essential — this month averages 215.2mm of precipitation.
Is October a good time to visit Chennai?
October is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Chennai
Cities with Similar October Climate (Tropical Savanna)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 13.08°, 80.27°. Timezone: Asia/Kolkata. Last updated: 2026-07-30.