36 places · 1991–2020 normals

Where is it
warm but not baking in September?

Daytime highs of 20–27°C with under 80 mm of rain — the range most people mean by “good weather”.

September normals for places qualifying as warm but not baking — one place per weather station, at most three per country, largest first
PlaceDayNightRainWet days
BeijingChina26.4°C16.1°C61 mm6
TianjinChina26.8°C16.6°C60 mm5
Xi’anChina25.7°C16.5°C80 mm8
SydneyAustralia21.6°C12.3°C63 mm6
MadridSpain26.5°C15.5°C24 mm4
TorontoCanada22.5°C14.1°C63 mm7
BrisbaneAustralia25.7°C13.9°C27 mm4
ChicagoUnited States24.8°C15.1°C68 mm7
RomeItaly26.9°C16°C71 mm7
ParisFrance22.5°C13.2°C37 mm6
AlmatyKazakhstan24.6°C11.7°C24 mm3
TijuanaMexico26.9°C16.1°C4 mm1
BucharestRomania25°C10.7°C60 mm5
BudapestHungary22.7°C13.2°C46 mm6
ViennaAustria21°C12.1°C64 mm7
San DiegoUnited States24.9°C18.8°C3 mm1
BelgradeSerbia24.3°C14.1°C57 mm7
Rostov-on-DonRussia23°C12.2°C45 mm5
KölnGermany20.5°C12.1°C67 mm10
VolgogradRussia22.4°C11.6°C35 mm5
EsenyurtTurkey25.1°C16.5°C42 mm4
KrasnodarRussia25.5°C13.9°C46 mm5
San FranciscoUnited States21.6°C13.3°C3 mm1
ErzurumTurkey24°C3.7°C40 mm3
San Luis PotosíMexico23.8°C13.8°C77 mm8
SaltilloMexico26.3°C13.6°C52 mm6
WrocławPoland20°C8.6°C52 mm8
BramptonCanada22.1°C11.3°C71 mm8
Frankfurt am MainGermany20.9°C11.7°C50 mm8
Gold CoastAustralia24°C14.8°C42 mm5
ChisinauMoldova23.1°C11°C49 mm5
DüsseldorfGermany20.1°C10.7°C60 mm10
HamiltonCanada23°C11.4°C65 mm6
SevastopolUkraine24.1°C11.9°C41 mm5
VanTurkey23.9°C10.8°C39 mm2
LisbonPortugal26.2°C17.7°C36 mm4

Lists are capped at one place per station because roughly a hundred settlements share each one, and at three per country so a single large country cannot fill the table. A place missing here is not disqualified — it may simply sit behind a bigger neighbour on the same station.