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🇸🇹 São Tomé and Príncipe

Flag of São Tomé and PríncipeNational Flag

Geography & Borders

This country has no land borders.

Introduction & Background

São Tomé and Príncipe (/ˌsaʊ təˈmeɪ...ˈprɪnsɪpə, -peɪ/;10 Template:Lang-pt (Template:IPA-pt); English: "Saint Thomas and Prince"), officially the Democratic Republic of São Tomé and Príncipe (Template:Lang-pt), is a Portuguese-speaking island country in the Gulf of Guinea, off the western equatorial coast of Central Africa. It consists of two archipelagos around the two main islands of São Tomé and Príncipe, about 150km (93.21mi) apart and about 250 and 225km (155 and 140mi) off the north-western coast of Gabon. With a population of 201,800 (2018 official estimate),511 São Tomé and Príncipe is the second-smallest and second-least populous African sovereign state after Seychelles.

The islands were uninhabited until their discovery by Portuguese explorers in the 15th century. Gradually colonized and settled throughout the 16th century, they collectively served as a vital commercial and trade centre for the Atlantic slave trade. The rich volcanic soil and proximity to the equator made São Tomé and Príncipe ideal for sugar cultivation, followed later by cash crops such as coffee and cocoa; the lucrative plantation economy was heavily dependent upon African slaves. Cycles of social unrest and economic instability throughout the 19th and 20th centuries culminated in peaceful independence in 1975. São Tomé and Príncipe has since remained one of Africa's most stable and democratic countries.

Key Information
AttributeDetails
Official Name
Democratic Republic of São Tomé and Príncipe
Capital
São Tomé
Continent
Africa
Region / Subregion
Africa / Middle Africa
Population
209,607
Area
964 km²
Languages
Portuguese
Currencies
São Tomé and Príncipe dobra (Db) [STN]
Cost of Living
25 / 100 (Low)
Price per Coffee
$1.25
Price per Meal
$5.00
Timezones
UTC±00 (GMT)
Bounding Box
Min: (0.86° N, 6.86° E)
Max: (1.14° N, 7.14° E)
Climate
Temperate
Terrain
Tropical rainforests, river basins, and plateaus

Geography & Climate

Climate, weather, and air quality data are based on historical records for the coordinates of the capital city, Sao Tome.

Temperature (2025)

15°25°35°
Jan
25.9° / 28.1°
Feb
26.5° / 28.8°
Mar
26.9° / 29°
Apr
26.8° / 28.9°
May
26.2° / 28°
Jun
25.6° / 26.6°
Jul
24.2° / 25°
Aug
23.6° / 24.3°
Sep
24.6° / 25.4°
Oct
25.2° / 26.3°
Nov
25.6° / 27°
Dec
25.7° / 27.6°

Precipitation & Snow (2025)

135Jan
111Feb
187Mar
112Apr
109May
43Jun
23Jul
14Aug
54Sep
149Oct
127Nov
232Dec
Rain (mm) Snow (cm)

Atmospheric Pressure (2025)

1011.1-1.3Jan
1009.9-2.5Feb
1010.4-2Mar
1010.2-2.2Apr
1012.3-0.1May
1014+1.6Jun
1015.8+3.4Jul
1015.4+3Aug
1014.2+1.8Sep
1012.8+0.4Oct
1011.8-0.6Nov
1010.9-1.5Dec

Thunderstorm Days (2025)

0Jan
0Feb
0Mar
0Apr
0May
0Jun
0Jul
0Aug
0Sep
0Oct
0Nov
0Dec

Wind Speed (2025)

Jan
15.8
Feb
17.5
Mar
19.5
Apr
19.7
May
18.8
Jun
22.6
Jul
24.2
Aug
22.9
Sep
21.9
Oct
20
Nov
19.9
Dec
19.2

Air Quality — Monthly Averages (2025)

MetricJanFebMarAprMayJunJulAugSepOctNovDec
PM2.5 μg/m³9.7107.96.88.514.915.413.5107.88.47.7
PM10 μg/m³15.218.213.411.312.520.120.518.314.312.212.811.6
O₃ μg/m³6654.655.348.454.273.384.369.253.648.148.453.9
NO₂ μg/m³0.20.20.20.10.10.10.100.10.10.10.1
SO₂ μg/m³0.20.10.10.10.20.10.10.10.10.10.10.1
CO μg/m³196193162124126162183159160114127143

Pollen Levels — Monthly (2025)

Pollen data is negligible or unavailable for this location.

⛰️ Highest Elevation

▲
Pico de São Tomé on São Tomé Island2024 m / 6,640 ft

  • Map Locations: Google Maps | OpenStreetMap

People & Society

Total Population230,871Density: 240.49 / km²
Annual Growth Rate+2%Rapid Growth
Life Expectancy69.72 yrsAverage lifespan at birth
Fertility Rate3.64Births per woman



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