Biyagama Weather in September

Biyagama in September averages 31°C (88°F) during the day and 25°C (77°F) at night. September is part of the rainy season, so frequent rainfall is typical.

Rainfall in Biyagama in September

Biyagama is in the rainy season in September, with rain on around 14 days and an average of 272 mm (11 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in Biyagama in September

Daytime temperatures in Biyagama reach 31°C (88°F) in September, dropping to 25°C (77°F) at night. Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. With lows around 25°C (77°F), the nights are warm enough that a sheet is usually all you need for bedding.

Sunshine in Biyagama in September

The area enjoys a balanced 189 hours of sunlight, ensuring it's neither too rainy nor too sunny.

Wind Speed in Biyagama in September

Average wind conditions reach 2 m/s (4 knots) in September. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.

Average water temperature in September

The water temperature is 28°C (82°F), which most people find very comfortable. A good month for swimming and water sports.

September in Biyagama can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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

Biyagama Temperature in September

Min Temperature 25°C (77°F)  

Max Temperature 31°C (88°F)  

Water Temperature 28°C (82°F) *  

Chance of Rain 46%  

Precipitation 272 mm (11 in)  

Rainy days 14 days  

Humidity 76% *  

Windspeed 2 m/s (4 knots) *  

Sunshine 189 hours *  

Percentage Sunshine *  

* Data from: Colombo, Sri Lanka (17 KM, 10 Miles).

What to Wear in Biyagama in September

Warm but pleasant conditions in Biyagama 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. Expect water temperatures of around 28°C (82°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Biyagama 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 Biyagama's climate page.

More climate data for Biyagama

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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