Gonawatta Temperature by Month

The average annual maximum temperature in Gonawatta, Sri Lanka is 28°C (82°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Gonawatta compares to cities worldwide.

The temperature in Gonawatta changes very little across the seasons, maintaining a similar climate throughout the year. Maximum daytime temperatures range from a comfortable 26°C (79°F) in December to a very warm 30°C (86°F) in April. Nighttime lows range from 21°C (70°F) in April to 19°C (66°F) in December.

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

Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. April, the warmest month of the year, receives 157 hours of sunshine.

The chart below shows the average temperature throughout the year:

Gonawatta's average annual maximum temperature is 28°C (82°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.

Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

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 Gonawatta, December is the coolest month, with average highs of 26°C (79°F) and humidity around 85%, considered very high. In April, the warmest month, temperatures average 30°C (86°F) with 72% 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.

Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.

Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.

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