Royapettah, Chennai Weather
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Climate of Royapettah: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), May is usually the hottest month in Royapettah, with average daytime highs around 36°C. January is the coolest, when nights typically fall to about 21°C.
The area receives about 1250 mm of rain in a typical year. Most of it falls from July to December (around 85% of the yearly total), and November is the wettest month at roughly 292 mm. The driest stretch is January to March, with under 20 mm a month.
For outdoor plans and travel, January to February usually offer the most comfortable weather in Royapettah, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 28° | 21° | 16 mm | 77% |
| Feb | 30° | 21° | 6 mm | 71% |
| Mar | 34° | 23° | 15 mm | 66% |
| Apr | 35° | 26° | 26 mm | 66% |
| May | 36° | 27° | 55 mm | 65% |
| Jun | 35° | 27° | 68 mm | 64% |
| Jul | 34° | 26° | 108 mm | 67% |
| Aug | 33° | 25° | 132 mm | 72% |
| Sep | 32° | 25° | 145 mm | 77% |
| Oct | 30° | 25° | 264 mm | 80% |
| Nov | 28° | 23° | 292 mm | 82% |
| Dec | 27° | 22° | 126 mm | 80% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Royapettah. Values describe typical conditions, not a forecast.
About Royapettah weather
Royapettah sits within Tamil Nadu's eastern coastal plain along the Bay of Bengal, which — unlike most of India — gets its main rains from the retreating north-east monsoon, about 3 km south of Chennai. Conditions turn hot with a hot summer (April–June) with highs often in the high 30s°C. After that, Royapettah sees the north-east monsoon (October–December) — Tamil Nadu's principal rainy season — with a weaker south-west monsoon contribution (June–September) mainly over the western interior. By December, expect a mild, short winter (December–January) with little temperature drop near the coast. This page shows live, auto-refreshing weather for Royapettah: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo.
Frequently asked questions
Royapettah is about 3 km south of Chennai, in Tamil Nadu.
Royapettah gets the north-east monsoon (October–December) — Tamil Nadu's principal rainy season — with a weaker south-west monsoon contribution (June–September) mainly over the western interior.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Royapettah's exact coordinates. No fixed schedule, the page updates whenever you load it.
May is usually the hottest month in Royapettah, with average daytime highs of about 36°C and nights around 27°C.
The coldest nights come in January, when the average low is about 21°C and daytime highs reach around 28°C. Winters are mild, so heavy woollens are rarely needed.
Royapettah receives about 1250 mm of rain in a typical year. November is the wettest month at roughly 292 mm, and the main rainy period is July to December.
January to February usually offer the most comfortable weather in Royapettah, with mild daytime temperatures and little rain.
In November Royapettah typically sees daytime highs near 28°C and lows near 23°C, with about 292 mm of rain over the month and average humidity around 82%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
Live temperature for Royapettah is shown at the top of this page and refreshes automatically — see the hourly breakdown below for how it changes through the day.
Royapettah's day-to-day weather is shaped by its position in Tamil Nadu, India — close enough to the coast for humidity to matter. See the hourly weather forecast or the air quality index for more detail.