Similar Climates › City Pairings › Rome ≈ Adelaide
City Pairings
fair match
Rome, Italy and Adelaide, Australia are a fair climate match — 15,332 km (9,527 mi) apart. Rome is Köppen zone Csa; Adelaide is Csb.
See Rome on the interactive map →Rome is classed hot-summer Mediterranean (Csa) while Adelaide is warm-summer Mediterranean (Csb) — different Köppen labels, but January and July still land close enough to pair. Because one city is in the opposite hemisphere, the comparison flips seasons: Rome’s January against Adelaide’s July. They are about 15,332 km (9,527 mi) apart, nearly opposite on the globe, yet Adelaide still tracks Rome’s January and July.
It is a fair match — close on the main numbers, with a few seasonal quirks between Rome and Adelaide. January means differ by 4°C (Adelaide warmer); July by 2°C (Adelaide cooler). Monthly rainfall stays within 5 mm in both January and July.
Sunshine stays close: Adelaide at 10.3 h/day on average versus 10.4 h/day in Rome (January 8.2 h / 7 h, July 12.4 h / 13.8 h). Air quality: mean PM2.5 is 5 µg/m³ in Adelaide vs 14 in Rome (lower by 9 µg/m³). Humidity: dew point in Adelaide runs about 6°C lower in July (11°C vs 17°C), so the air feels drier.
January & July · °C and mm
Adelaide is in the southern hemisphere, so its July lines up with Rome's January — the bars above pair each city's summer and winter, not the calendar month.
Compare Rome and Adelaide month by month on the interactive map →
See Adelaide's climate twin on its own page.
On Similar Climates, Adelaide, Australia is the closest distant match for Rome, Italy — scored fair, about 15,332 km (9,527 mi) away.
Rome and Adelaide are separated by roughly 15,332 km (9,527 mi) on the great-circle route.
No — they sit in opposite hemispheres, so seasons run about six months apart: Adelaide’s July pairs with Rome’s January in the comparison.
No — Rome is hot-summer Mediterranean (Csa) and Adelaide is warm-summer Mediterranean (Csb), but the January and July numbers still align closely enough to pair.
Rome has a hot-summer Mediterranean climate (Csa). January averages a high of 13°C and a low of 3°C with 70 mm of rain; July averages 31°C / 18°C and 15 mm.
Rome averages about 7 hours of sunshine a day in January and 13.8 hours in July.
January PM2.5 averages about 17.1 µg/m³ (US AQI 64); July averages 10.7 µg/m³ (US AQI 53).
Other close climate matches for Rome: San Jose (fair), Srinagar (fair), Amman (fair).
All hot-summer Mediterranean (Csa) cities on Similar Climates →
Explore Rome and Adelaide on the interactive map →