September · India
Best time to visit Chennai in September Weather, crowds & prices
Weather in Chennai in September
Average temperature 28°C, 136 mm of rain, about 19 days with 6+ hours of sunshine and 79% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
7.0/10
Ranked #8 of 12 months
- Avg temp
- 28°C
- Rainfall
- 136 mm
- Humidity
- 79%
- Days with 6h+ sun
- 19
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Chennai scores 7.0/10 for beach and coastal travel - ranked #8 of 12. Expect around 28°C, 136 mm of rain, and roughly 19 days with 6+ hours of sunshine this month.
Chennai strings Tamil temples, colonial churches and a long Marina beach along the Bay of Bengal.
September in Chennai: strong conditions, 8th of 12
September averages 28°C (83°F) and humidity near 79%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
At 136 mm this is a genuinely wet month: about 19 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 7/10 here, 8th of 12 months, against 10/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Figure on low-season pricing, with crowds are light for this destination.
Flexible dates? April scores 3 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Chennai in September?
- In September, Chennai averages 28°C, 136 mm of rain, and about 19 days with 6+ hours of sunshine. Its climate-comfort score is 7.0/10.
- Is September a good time to visit Chennai?
- September earns a 7.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Chennai in September?
- Expect about 136 mm of rain in September. Average humidity is 79% and there are about 19 days with 6+ hours of sunshine.
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