Kotadeniyawa Weather in September

In Kotadeniyawa, September brings very high daytime temperatures around 31°C (88°F), with nights cooling to 25°C (77°F). This month falls within the rainy season, so expect frequent rainfall.

Rainfall in Kotadeniyawa in September

As part of the rainy season, Kotadeniyawa sees around 12 days of rain in September, with an average of 238 mm (9.4 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 Kotadeniyawa in September

Expect highs of 31°C (88°F) in Kotadeniyawa in September, with nights dropping to around 25°C (77°F). Mornings and evenings are often more comfortable than the peak afternoon hours. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.

Sunshine in Kotadeniyawa in September

The city usually sees around 189 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).

September in Kotadeniyawa has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Sri Lanka, check out our Kotadeniyawa's climate page.

Kotadeniyawa Temperature in September

Min Temperature 25°C (77°F)  

Max Temperature 31°C (88°F)  

Chance of Rain 41%  

Precipitation 238 mm (9.4 in)  

Rainy days 12 days  

Humidity 76% *  

Sunshine 189 hours *  

Percentage Sunshine *  

* Data from: Colombo, Sri Lanka (47 KM, 29 Miles).

What to Wear in Kotadeniyawa 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). Also bring a poncho, it will rain a lot! Waterproof everything you can. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Kotadeniyawa in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Sri Lanka, check out our Kotadeniyawa's climate page.

More climate data for Kotadeniyawa

Temperature Rainfall Sunshine Humidity

See the full Kotadeniyawa climate overview or explore weather in Sri Lanka.