Aluthgama Weather in September
With daytime temperatures of 29°C (84°F) and nighttime lows of 25°C (77°F), September in Aluthgama brings high temperatures during the day. Do keep in mind that September is part of the rainy season, with frequent and often heavy rainfall.
Rainfall in Aluthgama in September
Aluthgama is in the rainy season in September, with rain on around 13 days and an average of 310 mm (12 in). The rain this month falls heavily when it arrives. Late afternoons in particular can see strong showers, so waterproofs are worth keeping handy.
Temperature in Aluthgama in September
September in Aluthgama brings typical temperatures with highs around 29°C (84°F) and lows of 25°C (77°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights are warm at 25°C (77°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Aluthgama in September
The month brings about 180 hours of sunlight, offering a comfortable mix of sun and rainy moments.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February and March typically offer the best weather for Aluthgama.
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 Aluthgama's climate page.
Aluthgama Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
29°C (84°F)
Chance of Rain
43%
Precipitation
310 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 Aluthgama 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 Aluthgama in September
Browse day-by-day weather records for Aluthgama spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Aluthgama historical weather extremes in September
Based on 21 years of weather observations (2004-2025), these are the most extreme conditions recorded in Aluthgama.
- On September 22, 2019, temperatures climbed to 37°C (99°F), marking the warmest September day on record.
- The coldest September day was on September 26, 2004, with a maximum of 26°C (79°F).
- Aluthgama registered its coldest September night on September 25, 2020, with temperatures dropping to 9°C (48°F).
- The wettest day in September Aluthgama was on September 26, 2004 with 120 mm (4.7 in) of precipitation.
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 Aluthgama in September
Warm but pleasant conditions in Aluthgama 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 could come in handy during the sunnier parts of your trip.What To Do in Aluthgama 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 Aluthgama's climate page.
See the full Aluthgama climate overview or explore weather in Sri Lanka.
