Río Segundo Temperature by Month

Río Segundo in Alajuela, Costa Rica enjoys a stable climate, with daytime temperatures staying close to 25°C (77°F) throughout the year. Explore the full monthly breakdown below.

In Río Segundo temperatures are generally consistent throughout the year. Maximum daytime temperatures range from a comfortable 24°C (75°F) in January to a comfortable 26°C (79°F) in April. Nighttime lows range from 17°C (63°F) in April to 16°C (61°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Río Segundo 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. April, the warmest month, gets 241 hours of sunshine.

The chart below shows the average temperature throughout the year:

Río Segundo's average annual maximum temperature is 25°C (77°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

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

New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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 Río Segundo, January is the coolest month, with average highs of 24°C (75°F) and humidity around 68%, considered high. In April, the warmest month, temperatures average 26°C (79°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.

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 Río Segundo's weather, including monthly rainfall, sunshine hours, and humidity, visit our Río Segundo climate page.