Rajagiriya Temperature by Month
Rajagiriya in Sri Lanka enjoys a stable climate, with daytime temperatures staying close to 31°C (88°F) throughout the year. Explore the full monthly breakdown below.
Rajagiriya Monthly Temperatures
The climate in Rajagiriya remains fairly constant, offering very warm temperatures throughout the year. Maximum daytime temperatures reach a very warm 33°C (91°F) in March, dropping to a very warm 30°C (86°F) in January. Nighttime lows stay between 25°C (77°F) and 24°C (75°F).
The chart below illustrates the average maximum day and minimum night temperatures in Rajagiriya by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. March, the warmest month, gets 276 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Rajagiriya vs Sri Lanka
The map below shows the annual temperature across Sri Lanka. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Rajagiriya vs World: Temperature Compared
Rajagiriya'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:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
What Does the Temperature Feel Like in Rajagiriya?
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 Rajagiriya, January is the coolest month, with average highs of 32°C (90°F) and humidity around 70% — considered high. In March, the warmest month, temperatures average 33°C (91°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 Rajagiriya this rarely lasts long on the ground.
For more on Rajagiriya's weather — including monthly rainfall, sunshine hours, and humidity — visit our Rajagiriya climate page.
