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🇸🇭 Saint Helena, Ascension and Tristan da Cunha

Flag of Saint Helena, Ascension and Tristan da CunhaNational Flag

Geography & Borders

This country has no land borders.

Introduction & Background

Saint Helena, Ascension and Tristan da Cunha4 is a British Overseas Territory located in the South Atlantic and consisting of the island of Saint Helena, Ascension Island and the archipelago of Tristan da Cunha including Gough Island. Its name was Saint Helena and Dependencies until 1 September 2009, when a new constitution came into force giving the three islands equal status as three territories, with a grouping under the Crown.

Of volcanic origin, the islands of Saint Helena, Ascension Island, and Tristan da Cunha were all formerly separate colonies of the English crown, though separately discovered by several Portuguese explorers between 1502 and 1504.

Key Information
AttributeDetails
Official Name
Saint Helena, Ascension and Tristan da Cunha
Capital
Jamestown
Continent
Africa
Region / Subregion
Africa / Western Africa
Population
5,651
Area
394 km²
Languages
English
Currencies
Pound sterling (£) [GBP], Saint Helena pound (£) [SHP]
Cost of Living
25 / 100 (Low)
Price per Coffee
$1.25
Price per Meal
$5.00
Timezones
UTC±00 (GMT)
Bounding Box
Min: (16.04° S, 5.81° W)
Max: (15.86° S, 5.63° W)
Climate
Temperate
Terrain
Low coastal plains, savanna grasslands, and tropical rainforests

Geography & Climate

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

Temperature (2025)

10°20°30°
Jan
22.2° / 23.3°
Feb
22.9° / 24.1°
Mar
23.2° / 24.5°
Apr
23° / 24.2°
May
22.2° / 23.2°
Jun
20.9° / 22.1°
Jul
19.8° / 21.2°
Aug
19.2° / 20.4°
Sep
19.4° / 20.3°
Oct
19.1° / 20.1°
Nov
19.5° / 20.5°
Dec
20.8° / 22°

Precipitation & Snow (2025)

6Jan
6Feb
9Mar
7Apr
5May
10Jun
14Jul
10Aug
7Sep
5Oct
4Nov
3Dec
Rain (mm) Snow (cm)

Atmospheric Pressure (2025)

1015-2.3Jan
1014-3.3Feb
1014.7-2.6Mar
1015-2.3Apr
1017.6+0.3May
1019.5+2.2Jun
1021.2+3.9Jul
1020.2+2.9Aug
1019+1.7Sep
1018.8+1.5Oct
1017.1-0.2Nov
1015.4-1.9Dec

Thunderstorm Days (2025)

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

Wind Speed (2025)

Jan
26.5
Feb
31.1
Mar
29.9
Apr
30.6
May
31.8
Jun
32.2
Jul
33.3
Aug
31.5
Sep
31.5
Oct
36.4
Nov
27.4
Dec
25.3

Air Quality — Monthly Averages (2025)

MetricJanFebMarAprMayJunJulAugSepOctNovDec
PM2.5 μg/m³9.110.38.78.68.79.89.28.914.412.110.19.5
PM10 μg/m³14.716.714.414.114.616.415.214.621.619.816.515.2
O₃ μg/m³44.54849.561.764.174.378.477.581.773.966.351.8
NO₂ μg/m³000000000000
SO₂ μg/m³0.20.20.20.10.10.20.10.10.100.10.1
CO μg/m³7369727578848479109868771

Pollen Levels — Monthly (2025)

Pollen data is negligible or unavailable for this location.

⛰️ Highest Elevation

▲
Queen Mary's Peak on Tristan da Cunha2060 m / 6,759 ft

  • Map Locations: Google Maps | OpenStreetMap

People & Society

Total Population5,651
Annual Growth RateN/AN/A
Life ExpectancyN/AAverage lifespan at birth
Fertility RateN/ABirths per woman



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