São Tomé Temperature by Month
São Tomé in São Tomé & Príncipe enjoys a stable climate, with daytime temperatures staying close to 28°C (82°F) throughout the year. Explore the full monthly breakdown below.
São Tomé Monthly Temperatures
The temperature in São Tomé remains steady throughout the year, providing a consistently comfortable climate. Maximum daytime temperatures range from a comfortable 30°C (86°F) in March to a comfortable 26°C (79°F) in July. Nights are mild year-round, with lows ranging from 26°C (79°F) in March to 24°C (75°F) in July.
The chart below illustrates the average maximum day and minimum night temperatures in São Tomé by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. March, the warmest month, averages 141 hours of sunshine.
The chart below shows the average temperature throughout the year:
Historical São Tomé Temperatures: 1976-2026
Browse day-by-day temperature records for São Tomé spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: São Tomé vs São Tomé & Príncipe
The map below shows the annual temperature across São Tomé & Príncipe. You can also select individual months if you want to compare a specific time of year.
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São Tomé vs World: Temperature Compared
São Tomé's average annual maximum temperature is 28°C (82°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
What Does the Temperature Feel Like in São Tomé?
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 São Tomé, July is the coolest month, with average highs of 26°C (79°F) and humidity around 79% — considered high. In March, the warmest month, temperatures average 30°C (86°F) with 84% humidity — conditions that feel very 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 São Tomé's weather — including monthly rainfall, sunshine hours, and humidity — visit our São Tomé climate page.
