Thiruvananthapuram Weather in September
Thiruvananthapuram in September sees high temperatures, with highs around 29°C (84°F) and overnight lows of 25°C (77°F). With the rainy season in full effect, expect around 188 mm (7.4 in) of rainfall and regular showers throughout the month.
Rainfall in Thiruvananthapuram in September
Thiruvananthapuram is in the rainy season in September, with rain on around 8 days and an average of 188 mm (7.4 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.
Temperature in Thiruvananthapuram in September
Thiruvananthapuram in September gets highs of 29°C (84°F) during the day and drops to 25°C (77°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Thiruvananthapuram in September
The city usually sees around 181 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).
Wind Speed in Thiruvananthapuram in September
Average wind conditions reach 2 m/s (4 knots) in September. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.
Average water temperature in September
At 27°C (81°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.Should you favor a climate that's both dry and comfortably warm, January typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit India, check out our Thiruvananthapuram's climate page.
Thiruvananthapuram Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
29°C (84°F)
Water Temperature
27°C (81°F)
Chance of Rain
28%
Precipitation
188 mm (7.4 in)
Rainy days
8 days
Humidity
77%
Windspeed
2 m/s (4 knots)
Sunshine
181 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Thiruvananthapuram typically stay consistent throughout September, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Thiruvananthapuram in September
Browse day-by-day weather records for Thiruvananthapuram spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Thiruvananthapuram historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Thiruvananthapuram.
- On September 20, 2010, temperatures climbed to 34°C (93°F), marking the warmest September day on record.
- The coldest September day was on September 25, 1985, with a maximum of 24°C (75°F).
- The coldest night in September in Thiruvananthapuram was on September 26, 2001, with a minimum of 22°C (72°F).
Best Places in India in September
Find out more about the weather in India and which places have the best travel conditions in this month. See all of India in September →
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What to Wear in Thiruvananthapuram in September
Warm but pleasant conditions in Thiruvananthapuram in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Expect water temperatures of around 27°C (81°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Thiruvananthapuram in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit India, check out our Thiruvananthapuram's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Thiruvananthapuram climate overview or explore weather in India.
