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Udawalawe Weather in September
September in Udawalawe brings very high temperatures, with daytime highs of 31°C (88°F) and nights around 23°C (73°F). Quite a bit of rainfall is expected, around 118 mm (4.6 in), so pack an umbrella.
Rainfall in Udawalawe in September
Expect around 11 days of rain based on historical data, with 118 mm (4.6 in) average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Udawalawe in September
September in Udawalawe brings typical temperatures with highs around 31°C (88°F) and lows of 23°C (73°F). Mornings and evenings are often more comfortable than the peak afternoon hours. With lows around 23°C (73°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Udawalawe in September
Expect a lot of sunshine this month, with about 210 hours of sun. These sunny conditions add to the overall experience.If your ideal day consists of dry skies and pleasant temperatures, June, July and August typically offer the best circumstances for Udawalawe.
Udawalawe Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
31°C (88°F)
Chance of Rain
37%
Precipitation
118 mm (4.6 in)
Rainy days
11 days
Humidity
77% *
Sunshine
210 hours *
Percentage Sunshine
*
* Data from: Hambantota, Sri Lanka (48 KM, 30 Miles).
Udawalawe Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Udawalawe - and find the best time to visit.
Daily Historical Temperatures
43-year average (1976-2025)
Based on our historical records, temperatures in Udawalawe typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are pleasant, with lows around 20°C (68°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 records for Udawalawe in September
Browse day-by-day weather records for Udawalawe spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Udawalawe historical weather extremes in September
Based on 22 years of weather observations in Udawalawe between 2004 and 2026, these are the recorded extremes.
- The hottest September day on record in Udawalawe reached 37°C (99°F) (September 8, 2018).
- The coldest September day was on September 2, 2004, with a maximum of 21°C (70°F).
- Udawalawe registered its coldest September night on September 22, 2006, with temperatures dropping to 14°C (57°F).
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
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Udawalawe in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Udawalawe in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Udawalawe 3-Day Forecast
More climate data for Udawalawe
Temperature Rainfall Sunshine Humidity
See the full Udawalawe climate overview or explore weather in Sri Lanka.
Popular in September
Where to go in September - average daytime high across popular destinations.
Colombo
30°C (86°F) Galle29°C (84°F) Mirissa29°C (84°F) Hikkaduwa29°C (84°F) Negombo30°C (86°F) Kandy
29°C (84°F) Unawatuna29°C (84°F) Nuwara Eliya28°C (82°F) Bucket list
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