Adams Peak Weather in September
September in Adams Peak brings high temperatures around 27°C (81°F) during the day, dropping to 21°C (70°F) at night, and as part of the rainy season, heavy rainfall is common.
Rainfall in Adams Peak in September
Adams Peak is in the rainy season in September, with rain on around 13 days and an average of 265 mm (10 in). The rain this month falls heavily when it arrives, so waterproofs are worth keeping handy.
Temperature in Adams Peak in September
September in Adams Peak brings high temperatures, with highs of 27°C (81°F) and nights around 21°C (70°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights are mild at around 21°C (70°F), which is comfortable for most people.
Sunshine in Adams Peak in September
The month enjoys around 190 hours of sunshine. The wet weather tends to wait until afternoon or evening to arrive, leaving the first half of most days dry and sunny.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Adams Peak. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 Adams Peak's climate page.
Adams Peak Temperature in September
Min Temperature
21°C (70°F)
Max Temperature
27°C (81°F)
Chance of Rain
44%
Precipitation
265 mm (10 in)
Rainy days
13 days
Humidity
78% *
Sunshine
190 hours *
Percentage Sunshine
*
Daily Historical Temperatures
43-year average (1976-2025)
Based on our historical records, temperatures in Adams Peak typically stay consistent throughout September, with daily highs averaging around 27°C (81°F). Nights are pleasant, with lows around 18°C (64°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 Adams Peak in September
Browse day-by-day weather records for Adams Peak spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Adams Peak historical weather extremes in September
The extremes listed below come from historical weather data collected in Adams Peak from 2004 through 2025.
- On September 28, 2024, temperatures climbed to 34°C (93°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 15°C (59°F), recorded on September 25, 2004.
- The coldest night in September in Adams Peak was on September 1, 2004, with a minimum of 11°C (52°F).
- The wettest September day on record brought 146 mm (5.7 in) of precipitation to Adams Peak (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 Adams Peak in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Adams Peak 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 Adams Peak's climate page.
Temperature Rainfall Sunshine Humidity
See the full Adams Peak climate overview or explore weather in Sri Lanka.
