Tamil Nadu · India
Chennai in September
In September, Chennai averages a daytime high of 35 °C and a night-time low of 26 °C, with about 133 mm of rain over the month. Chennai has no month that is both mild and dry by the measure used here.
- Average high
- 35 °C
- Average low
- 26 °C
- Rain in the month
- 133 mm
- Daylight on 15 Sep
- 12 h 10 min
- Comfortable month
- No
- Places to stay
- 491
When to go
How September compares with the rest of the year in Chennai
September is tied for the 5th warmest month in Chennai by average daytime high; across the year the highs run from 30 °C to 39 °C and the lows from 20 °C to 28 °C. By day, September is about the same as August, and October is 2 °C cooler than September.
September brings 133 mm of rain, more than the monthly average of 107 mm (1281 mm a year); it is the 5th wettest month.
On 15 September the sun is up for about 12 h 10 min, against 11 h 20 min at the shortest and 12 h 50 min at the longest point of the year (calculated from the latitude, sunrise to sunset).
| Month | High | Low | Rain | Comfortable |
|---|---|---|---|---|
| January | 30 °C | 20 °C | 16 mm | |
| February | 32 °C | 21 °C | 11 mm | |
| March | 34 °C | 23 °C | 3 mm | |
| April | 36 °C | 26 °C | 11 mm | |
| May | 39 °C | 28 °C | 41 mm | |
| June | 38 °C | 28 °C | 72 mm | |
| July | 36 °C | 27 °C | 104 mm | |
| August | 35 °C | 26 °C | 147 mm | |
| September | 35 °C | 26 °C | 133 mm | |
| October | 33 °C | 25 °C | 287 mm | |
| November | 30 °C | 23 °C | 320 mm | |
| December | 30 °C | 22 °C | 135 mm |
Comfortable means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).
When to go
Is September a good time to visit Chennai?
Not by the measure used here: the average high of 35 °C is above 29 °C and about 133 mm of rain is 80 mm or more. No month in Chennai meets it.
The measure is about weather for a city stay only; it says nothing about events, school holidays or prices.
Public holidays in India in September
Nationwide public holidays; shops and offices may close on these dates.
Where to stay
Where to stay in Chennai
This guide lists 491 places to stay in Chennai, hotels recorded in Wikidata. By straight-line distance from the centre: under 1 km, 17; 1–3 km, 59; 3–10 km, 180; 10 km or more, 235.
Sources: climate from CRU TS v4.10 (Climatic Research Unit, University of East Anglia; Open Database License), 1991–2020 averages; day length calculated from the latitude; public holidays from python-holidays (MIT); places to stay from each operator's own public pages and Wikidata. How this guide is made.