Bentota Weather in September
September in Bentota sees daytime temperatures around 29°C (84°F) and lows of 25°C (77°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.
Rainfall in Bentota in September
As part of the rainy season, Bentota sees around 13 days of rain in September, with an average of 309 mm (12 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours, often in the late afternoon.
Temperature in Bentota in September
In September, expect high temperatures in Bentota, with highs of 29°C (84°F) and lows of 25°C (77°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows around 25°C (77°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Bentota in September
You can expect a moderate amount of sunlight, with approximately 180 hours. Even though this month is part of the wet season, you can still see the sun occasionally.September in Bentota can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sri Lanka, check out our Bentota's climate page.
Bentota Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
29°C (84°F)
Chance of Rain
43%
Precipitation
309 mm (12 in)
Rainy days
13 days
Sunshine
180 hours *
Percentage Sunshine
*
Daily Historical Temperatures
43-year average (1976-2025)
Based on our historical records, temperatures in Bentota typically stay consistent throughout September, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Daily Historical Precipitation
43-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 Bentota in September
Browse day-by-day weather records for Bentota spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bentota historical weather extremes in September
Based on 21 years of weather observations (2004-2025), these are the most extreme conditions recorded in Bentota.
- The warmest day in September was on September 22, 2019, with a maximum of 37°C (99°F).
- The coldest September day was on September 26, 2004, with a maximum of 26°C (79°F).
- Bentota registered its coldest September night on September 25, 2020, with temperatures dropping to 9°C (48°F).
- The wettest September day on record brought 116 mm (4.6 in) of precipitation to Bentota (September 26, 2004).
Best Places in Sri Lanka in September
Find out more about the weather in Sri Lanka and which places have the best travel conditions in this month. See all of Sri Lanka in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Bentota in September
Warm but pleasant conditions in Bentota 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. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Bentota 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 Sri Lanka, check out our Bentota's climate page.
See the full Bentota climate overview or explore weather in Sri Lanka.
