Rank 19 · South Africa

Cape Town

South Africa · metro
8.1
HECI score
B
Class B
Seasonal Sweet Spot

Component breakdown

Air Quality
PM2.5 as US AQI, annual means over the window
8.7
Good
Climate
Apparent temperature, 18-24°C optimal
9.3
Optimal
Wind
Daily maximum gusts, calm is comfortable
4.3
Poor
UV Safety
Hazardous UV peaks penalized, low UV is not
7.8
Good
Day-Night Swing
Daily max-min gap, mild swings score high
9.9
Optimal
Seasons
Distinct but gentle seasons score highest
10.0
Optimal
Sunlight
Annual sunshine hours
9.0
Good
Rainfall
Volume and year-to-year reliability
8.7
Good
Disaster Risk
Recorded events, 3 yr / 50 km
10.0
Optimal

Goldilocks curve

Cold18-24°CHot

Cape Town sits just below the plateau on the cool side, mean feels-like 15.8°C.

Air quality source

Ground monitor

This city's air quality is measured by a real monitoring station: OpenAQ ground monitor (13.0km).

Coordinates-33.9249, 18.4241
Data window10y
Updated7/13/2026
Sources: Open-Meteo, OpenAQ ground monitor (13.0km), USGS Earthquakes, NOAA IBTrACS, Smithsonian GVP, GloFAS (Copernicus)