Similar Climates › City Pairings › New Orleans ≈ Porto Alegre
City Pairings
fair match
New Orleans, Louisiana and Porto Alegre, Brazil are a fair climate match — 7,835 km (4,868 mi) apart. New Orleans is Köppen zone Cfa; Porto Alegre is Cfa.
See New Orleans on the interactive map →New Orleans and Porto Alegre both sit in the humid subtropical (Cfa) zone, so their seasonal arcs line up. Because one city is in the opposite hemisphere, the comparison flips seasons: New Orleans’ January against Porto Alegre’s July. They are about 7,835 km (4,868 mi) apart, so Porto Alegre is a reachable stand-in when you want New Orleans’ weather elsewhere.
It is a fair match — close on the main numbers, with a few seasonal quirks between New Orleans and Porto Alegre. January means differ by 3°C (Porto Alegre warmer); July by 2°C (Porto Alegre cooler). Rainfall shifts more: Porto Alegre is 36 mm drier in July.
Sunshine stays close: Porto Alegre at 9.1 h/day on average versus 9.1 h/day in New Orleans (January 7.1 h / 7.5 h, July 11 h / 10.7 h). PM2.5 averages stay near each other (10 µg/m³ in Porto Alegre, 12 in New Orleans). Humidity: dew point in Porto Alegre runs about 4°C lower in July (19°C vs 23°C), so the air feels drier.
January & July · °C and mm
Porto Alegre is in the southern hemisphere, so its July lines up with New Orleans's January — the bars above pair each city's summer and winter, not the calendar month.
Compare New Orleans and Porto Alegre month by month on the interactive map →
See Porto Alegre's climate twin on its own page.
On Similar Climates, Porto Alegre, Brazil is the closest distant match for New Orleans, Louisiana — scored fair, about 7,835 km (4,868 mi) away.
New Orleans and Porto Alegre are separated by roughly 7,835 km (4,868 mi) on the great-circle route.
No — they sit in opposite hemispheres, so seasons run about six months apart: Porto Alegre’s July pairs with New Orleans’ January in the comparison.
Yes — both are humid subtropical (Cfa).
New Orleans has a humid subtropical climate (Cfa). January averages a high of 17°C and a low of 7°C with 130 mm of rain; July averages 33°C / 24°C and 171 mm.
New Orleans averages about 7.5 hours of sunshine a day in January and 10.7 hours in July.
January PM2.5 averages about 6.7 µg/m³ (US AQI 38); July averages 16.3 µg/m³ (US AQI 70).
Other close climate matches for New Orleans: Kagoshima (loose), Shanghai (loose), Islamabad (loose).
All humid subtropical (Cfa) cities on Similar Climates →
Explore New Orleans and Porto Alegre on the interactive map →