Santo Tomas Temperature by Month
Santo Tomas in Peru enjoys a stable climate, with daytime temperatures staying close to 31°C (88°F) throughout the year. Explore the full monthly breakdown below.
Santo Tomas Monthly Temperatures
The temperature in Santo Tomas changes very little across the seasons, maintaining a similar climate throughout the year. Maximum daytime temperatures range from a very warm 30°C (86°F) in July to a very warm 32°C (90°F) in September. Nighttime lows range from 23°C (73°F) in September to 22°C (72°F) in July.
The chart below illustrates the average maximum day and minimum night temperatures in Santo Tomas by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. September, the warmest month of the year, receives 215 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Santo Tomas vs Peru
The map below shows the annual temperature across Peru. You can also select individual months if you want to compare a specific time of year.
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Santo Tomas vs World: Temperature Compared
Santo Tomas's average annual maximum temperature is 31°C (88°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.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
Beijing, China averages 20°C (68°F) annually, but with big seasonal swings — very cold winters and hot summers.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
What Does the Temperature Feel Like in Santo Tomas?
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 Santo Tomas, July is the coolest month, with average highs of 30°C (86°F) and humidity around 81% — considered very high. In September, the warmest month, temperatures average 32°C (90°F) with 78% 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 Santo Tomas's weather — including monthly rainfall, sunshine hours, and humidity — visit our Santo Tomas climate page.
