Pasadena (TX) Temperature by Month
Pasadena, Texas, United States of America has an average annual maximum temperature of 27°C (81°F), ranging from 17°C (63°F) in January to 35°C (95°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Pasadena Monthly Temperatures
With significant temperature fluctuations, Pasadena enjoys distinct seasons year-round. Nighttime lows range from 25°C (77°F) in August to 7°C (45°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Pasadena by month:
Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. August, the warmest month, sees 270 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Pasadena vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Pasadena vs World: Temperature Compared
Pasadena's average annual maximum temperature is 27°C (81°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Pasadena?
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 Pasadena, January is the coolest month, with average highs of 17°C (63°F) and humidity around 75% — considered high. In August, the warmest month, temperatures average 35°C (95°F) with 75% 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.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Pasadena's weather — including monthly rainfall, sunshine hours, and humidity — visit our Pasadena climate page.
