Cartago Temperature by Month

Cartago in Cartago, Costa Rica enjoys a stable climate, with daytime temperatures staying close to 23°C (73°F) throughout the year. Explore the full monthly breakdown below.

In Cartago temperatures are generally consistent throughout the year. Maximum daytime temperatures range from a comfortable 22°C (72°F) in January to a comfortable 24°C (75°F) in April. Nighttime lows range from 15°C (59°F) in April to 14°C (57°F) in January.

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

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. April, the warmest month, sees 241 hours of sunshine.

The chart below shows the average temperature throughout the year:

Cartago's average annual maximum temperature is 23°C (73°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.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

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 Cartago, January is the coolest month, with average highs of 22°C (72°F) and humidity around 68%, considered high. In April, the warmest month, temperatures average 24°C (75°F) with 70% 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.

Land Temperature: The average surface temperature across the Earth's land is around 14°C, but that figure hides enormous variation. In the Sahara, daytime temperatures can exceed 50°C. At the poles, averages fall below -30°C. Deserts are also notable for how quickly they cool at night, without moisture in the air to retain heat, temperatures can drop 30°C or more in just a few hours, making desert nights surprisingly cold.

Sea Temperature: The oceans average around 17°C at the surface, generally cooler than land. Because water absorbs and releases heat slowly, the sea acts as a buffer, keeping coastal climates more stable than inland areas. The deep ocean is a different story: below the sunlit upper layers, water stays near-freezing regardless of surface conditions.

Equatorial Regions: Near the equator, the sun is overhead year-round, producing consistent heat and fuelling tropical rainforests in places like the Amazon and Congo basins. Seasonal temperature variation is minimal, but these regions do experience distinct wet and dry seasons that shape their ecosystems.

Desert Regions: Desert temperatures swing wildly between seasons and even between day and night. The Sonoran Desert in North America can drop to 0°C on winter nights yet exceed 40°C on summer days. What all deserts share is very low rainfall, typically under 250mm per year.

Polar Regions: The Arctic and Antarctic experience extreme cold, with long stretches of darkness in winter and continuous daylight in summer. Arctic winter temperatures average around -30°C. In Antarctica's interior, it gets far colder, sometimes below -80°C in the coldest recorded spots.

Temperate Forests: Across North America, Europe, and East Asia, temperate forests see proper seasons, warm summers and cold winters, with average temperatures roughly between 5°C and 22°C depending on the time of year.

Mountain Regions: Temperature drops by roughly 6°C for every 1,000 metres of altitude. In ranges like the Andes or the Himalayas, that means you can move from temperate forest at lower elevations to permanent snow and ice at the peaks, all within a relatively short distance.

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