Similar Climates › City Pairings › Montgomery ≈ Porto Alegre
City Pairings
loose match
Montgomery, Alabama and Porto Alegre, Brazil are a loose climate match — 7,861 km (4,885 mi) apart. Montgomery is Köppen zone Cfa; Porto Alegre is Cfa.
See Montgomery on the interactive map →Montgomery 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: Montgomery’s January against Porto Alegre’s July. They are about 7,861 km (4,885 mi) apart, so Porto Alegre is a reachable stand-in when you want Montgomery’s weather elsewhere.
It is a loose match: useful as a climate analogue for Montgomery, though not a perfect copy. January means differ by 6°C (Porto Alegre warmer); July by 2°C (Porto Alegre cooler). Monthly rainfall stays within 5 mm in both January and July.
Sunshine stays close: Porto Alegre at 9.1 h/day on average versus 9.6 h/day in Montgomery (January 7.1 h / 7.3 h, July 11 h / 11.8 h). PM2.5 averages stay near each other (10 µg/m³ in Porto Alegre, 11 in Montgomery). Humidity: dew point in Porto Alegre runs about 9°C higher in January (11°C vs 2°C), so the air feels muggier.
January & July · °C and mm
Porto Alegre is in the southern hemisphere, so its July lines up with Montgomery's January — the bars above pair each city's summer and winter, not the calendar month.
Compare Montgomery 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 Montgomery, Alabama — scored loose, about 7,861 km (4,885 mi) away.
Montgomery and Porto Alegre are separated by roughly 7,861 km (4,885 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 Montgomery’s January in the comparison.
Yes — both are humid subtropical (Cfa).
Montgomery has a humid subtropical climate (Cfa). January averages a high of 15°C and a low of 2°C with 130 mm of rain; July averages 33°C / 23°C and 135 mm.
Montgomery averages about 7.3 hours of sunshine a day in January and 11.8 hours in July.
January PM2.5 averages about 6.4 µg/m³ (US AQI 37); July averages 16.4 µg/m³ (US AQI 70).
Other close climate matches for Montgomery: Islamabad (loose), Asunción (loose), Kagoshima (loose).
All humid subtropical (Cfa) cities on Similar Climates →
Explore Montgomery and Porto Alegre on the interactive map →