Kalupahana Weather in September
During September, Kalupahana experiences high daytime temperatures of 28°C (82°F) and cooler nights around 20°C (68°F). September sits within the rainy season, so expect regular and often heavy rainfall.
Rainfall in Kalupahana in September
As part of the rainy season, Kalupahana sees around 13 days of rain in September, with an average of 181 mm (7.1 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in Kalupahana in September
Expect highs of 28°C (82°F) in Kalupahana in September, with nights dropping to around 20°C (68°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 20°C (68°F), the nights are warm and generally comfortable.
Sunshine in Kalupahana in September
This month is characterized by fewer sunny days, with about 87 hours of sunshine. It's great for those who appreciate cooler, less sunny days.If your ideal day consists of dry skies and pleasant temperatures, January, February, March, June, July and August typically offer the best circumstances for Kalupahana.
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 Kalupahana's climate page.
Kalupahana Temperature in September
Min Temperature
20°C (68°F)
Max Temperature
28°C (82°F)
Chance of Rain
44%
Precipitation
181 mm (7.1 in)
Rainy days
13 days
Humidity
83% *
Sunshine
87 hours *
Percentage Sunshine
*
Daily Historical Temperatures
43-year average (1976-2025)
Based on our historical records, temperatures in Kalupahana typically stay consistent throughout September, with daily highs averaging around 28°C (82°F). Nights are pleasant, with lows around 16°C (61°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 Kalupahana in September
Browse day-by-day weather records for Kalupahana spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kalupahana historical weather extremes in September
Based on 21 years of weather observations (2004-2025), these are the most extreme conditions recorded in Kalupahana.
- The hottest September day on record in Kalupahana reached 37°C (99°F) (September 8, 2018).
- The lowest daytime temperature in September was 14°C (57°F), recorded on September 5, 2004.
- Nighttime temperatures dropped to 12°C (54°F) on September 1, 2004, marking the coldest September night on record.
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 Kalupahana in September
Warm but pleasant conditions in Kalupahana 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. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Kalupahana 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 Kalupahana's climate page.
Temperature Rainfall Sunshine Humidity
See the full Kalupahana climate overview or explore weather in Sri Lanka.
