San Jose Temperature by Month

San Jose, Balearic Islands, Spain has an average annual maximum temperature of 23°C (73°F), ranging from 16°C (61°F) in January to 31°C (88°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The weather in San Jose experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 25°C (77°F) in August to 11°C (52°F) in January.

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

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. August, the city's warmest month, sees 304 hours of sunshine.

The chart below shows the average temperature throughout the year:

San Jose'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:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Beijing, China averages 20°C (68°F) annually, but with big seasonal swings, very cold winters and hot summers.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

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 San Jose, January is the coolest month, with average highs of 16°C (61°F) and humidity around 75%, considered high. In August, the warmest month, temperatures average 31°C (88°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 San Jose's weather, including monthly rainfall, sunshine hours, and humidity, visit our San Jose climate page.