Tijuana Temperature by Month

Tijuana, Baja California, Mexico has an average annual maximum temperature of 23°C (73°F), with moderate seasonal shifts ranging from 19°C (66°F) in December to 27°C (81°F) in September. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

In Tijuana, seasonal changes bring about a moderate variation in temperatures. Nighttime lows range from 17°C (63°F) in September to 8°C (46°F) in December.

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

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. September, the warmest month, sees 272 hours of sunshine.

The chart below shows the average temperature throughout the year:

Tijuana'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:

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

Glasgow, Scotland averages 13°C (55°F) a year, mild but often grey, with cold winters and rarely hot summers.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

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 Tijuana, December is the coolest month, with average highs of 19°C (66°F) and humidity around 69%, considered high. In September, the warmest month, temperatures average 27°C (81°F) with 79% 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.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

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