Similar Climates › City Pairings › Portland ≈ Concepción
City Pairings
fair match
Portland, Oregon and Concepción, Chile are a fair climate match — 10,418 km (6,473 mi) apart. Portland is Köppen zone Csb; Concepción is Csb.
See Portland on the interactive map →Portland and Concepción both sit in the warm-summer Mediterranean (Csb) zone, so their seasonal arcs line up. Because one city is in the opposite hemisphere, the comparison flips seasons: Portland’s January against Concepción’s July. Roughly 10,418 km (6,473 mi) separates them — far enough that Concepción feels like another continent, close enough on the climate numbers to stand in for Portland.
It is a fair match — close on the main numbers, with a few seasonal quirks between Portland and Concepción. January means differ by 4°C (Concepción warmer); July by 1°C (Concepción cooler). Rainfall shifts more: Concepción is 25 mm wetter in January.
Sunshine: Concepción averages 10.1 hours a day across the two months vs 8.6 in Portland (1.5 h/day more; January 6.8 h vs 4.1 h, July 13.4 h vs 13.2 h). PM2.5 averages stay near each other (6 µg/m³ in Concepción, 6 in Portland). Humidity: dew point in Concepción runs about 6°C higher in January (7°C vs 1°C), so the air feels muggier.
January & July · °C and mm
Concepción is in the southern hemisphere, so its July lines up with Portland's January — the bars above pair each city's summer and winter, not the calendar month.
Compare Portland and Concepción month by month on the interactive map →
See Concepción's climate twin on its own page.
On Similar Climates, Concepción, Chile is the closest distant match for Portland, Oregon — scored fair, about 10,418 km (6,473 mi) away.
Portland and Concepción are separated by roughly 10,418 km (6,473 mi) on the great-circle route.
No — they sit in opposite hemispheres, so seasons run about six months apart: Concepción’s July pairs with Portland’s January in the comparison.
Yes — both are warm-summer Mediterranean (Csb).
Portland has a warm-summer Mediterranean climate (Csb). January averages a high of 8°C and a low of 2°C with 130 mm of rain; July averages 27°C / 14°C and 13 mm.
Portland averages about 4.1 hours of sunshine a day in January and 13.2 hours in July.
January PM2.5 averages about 6.6 µg/m³ (US AQI 36); July averages 4.8 µg/m³ (US AQI 32).
Other close climate matches for Portland: Bordeaux (fair), Porto (loose), Jerusalem (loose).
All warm-summer Mediterranean (Csb) cities on Similar Climates →
Explore Portland and Concepción on the interactive map →