Climate
Pematangsiantar logs 78 hot days a year to Surabaya's 347 — Pematangsiantar wins by 269. Surabaya also leads on sunny days by 162.
Pematangsiantar
Feels-like °C
Dinner outside
Surabaya
Feels-like °C
Dinner outside
Air Quality
Pematangsiantar averages 19.7 µg/m³ (sensitive-groups) PM2.5 annually versus Surabaya's 33.5 µg/m³ (unhealthy) — Pematangsiantar breathes ~41% cleaner air (13.8 µg/m³ lower).
Pematangsiantar
Surabaya
PM2.5 annual average
WHO classification
City Scale
Both maps at the same real-world scale — 1 cm on either map is the same distance.
Pematangsiantar (448K) and Surabaya (6.9M) are 15x in population — Surabaya is the larger metro, Pematangsiantar the smaller; on land area Surabaya spans roughly 19x more ground.
Surabaya is roughly 17x the scale of Pematangsiantar
Combined population & area comparison
SurabayaPematangsiantarCity Scale Rankings
Surabaya6.9M15xPematangsiantar448K1xSurabaya1,304 km²19xPematangsiantar69 km²1xPematangsiantar
Surabaya
Who Thrives Here
Pematangsiantar favours the clean air seeker, while Surabaya suits the sunshine lover. Both cities work well for the winter escapist.
Also compared
SingaporeFrequently asked about Pematangsiantar vs Surabaya
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