Wadduwa Temperature by Month

The average annual maximum temperature in Wadduwa, Kalutara District, Sri Lanka is 31°C (88°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Wadduwa compares to cities worldwide.

The temperature in Wadduwa changes very little across the seasons, maintaining a similar climate throughout the year. Maximum daytime temperatures range from a comfortable 30°C (86°F) in August to a very warm 32°C (90°F) in March. Nighttime lows range from 25°C (77°F) in March to 24°C (75°F) in August.

The chart below illustrates the average maximum day and minimum night temperatures in Wadduwa by month:

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. March, the city's warmest month, gets 276 hours of sunshine.

The chart below shows the average temperature throughout the year:

Wadduwa's average annual maximum temperature is 31°C (88°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Wadduwa, August is the coolest month, with average highs of 30°C (86°F) and humidity around 77%, considered high. In March, the warmest month, temperatures average 32°C (90°F) with 69% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Wadduwa this rarely lasts long on the ground.

For more on Wadduwa's weather, including monthly rainfall, sunshine hours, and humidity, visit our Wadduwa climate page.