The Frontier Gazette & Almanack
“Fair Warning for Every Town Under the Sky” · Est. 1881
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Cosmópolis Weather in September

Cosmópolis in September

The short of it: Cosmópolis in September averages a high of 27 °C (81 °F) and a low of 15 °C (58 °F), with 39 mm (1.5 in) of rain and about 12 h 0 min of daylight. Rated 5 of 5 for a visit; the best months are June and July. Source: TerraClimate climate normals, 1991–2020.

Average high 27° · low 15° · rain 39 mm · daylight 12 h 0 min

✦✦✦✦✦ Recommended for a visit · best months: June & July

September in Cosmópolis brings afternoons near 27° and nights around 15°, with about 39 mm of rain over the month. Much like August: highs about 27°, nights near 15°. Easy travelling weather. Rain is modest, about 39 mm, the 8th wettest month.

The sun is up for about 12 h 0 min in mid-September, 39 minutes more than a month before.

For the traveller: pack light clothes and a jacket for the evening. The Almanac rates September 5 of 5 for a visit; the finest months here are June and July.

Against its neighbours, Cosmópolis runs warmer than most and drier than most in September. Artur Nogueira, 8 km to the NNE, sees much the same highs.

September in Cosmópolis, by the numbers

Warmth rank
7th warmest of 12
Rain rank
8th wettest of 12
Versus August
2° warmer, 19 mm more rain
Versus October
1° colder
Day–night spread
13°
Snow season
seldom any
Daylight, mid-month
12 h 0 min
Average wind
8 km/h

Neighbouring Towns

September averages · distance by the crow’s flight
TownDistanceHighLowRain
Artur NogueiraSão Paulo8 km NNE27°14°39 mm
PaulíniaSão Paulo14 km SSE27°15°42 mm
AmericanaSão Paulo17 km SW27°15°41 mm
Nova OdessaSão Paulo18 km SW27°15°42 mm
SumaréSão Paulo21 km SSW27°15°42 mm
JaguariúnaSão Paulo23 km ESE27°15°42 mm
LimeiraSão Paulo23 km WNW28°15°39 mm
HortolândiaSão Paulo24 km S27°15°43 mm

The Almanac · Cosmópolis Month by Month

Climate normals 1991–2020 · pick a month
PrecipitationAverage highAverage low
Recommended
The Almanac Speaks
September
✦✦✦✦✦

Much like August: highs about 27°, nights near 15°. Easy travelling weather. Rain is modest, about 39 mm, the 8th wettest month.

Climate of Cosmópolis by month
MonthHighLowRainWindDaylightVisit
January28°19°271 mm6 km/h13 h 23 min✦✦✦
February28°19°216 mm6 km/h12 h 53 min✦✦✦
March28°18°138 mm6 km/h12 h 17 min✦✦✦
April27°16°42 mm6 km/h11 h 36 min✦✦✦✦✦
May25°13°32 mm6 km/h11 h 2 min✦✦✦✦✦
June24°12°30 mm5 km/h10 h 45 min✦✦✦✦✦
July24°11°22 mm6 km/h10 h 52 min✦✦✦✦✦
August26°12°20 mm7 km/h11 h 20 min✦✦✦✦✦
September27°15°39 mm8 km/h12 h 0 min✦✦✦✦✦
October28°17°99 mm8 km/h12 h 40 min✦✦✦
November28°17°136 mm8 km/h13 h 14 min✦✦✦
December29°18°174 mm8 km/h13 h 31 min✦✦✦

Questions Readers Ask about Cosmópolis in September

Answered from the wire & the Almanac

What is the weather like in Cosmópolis in September?

Days average 27 °C (81 °F) and nights 15 °C (58 °F), with about 39 mm (1.5 in) of rain over the month. Much like August: highs about 27°, nights near 15°. Easy travelling weather. Rain is modest, about 39 mm, the 8th wettest month.

Is September a good time to visit Cosmópolis?

The Almanac gives September 5 of 5 (recommended). The best months are June and July.

How long are the days in Cosmópolis in September?

In mid-September the sun is up for about 12 h 0 min. The days are lengthening — from 10 h 45 min in June to 13 h 31 min in December.

Does it snow in Cosmópolis in September?

Hardly — September nights average 15 °C (58 °F), above freezing.

What should I pack for Cosmópolis in September?

Light clothes and a jacket for the evening.

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The Editor’s Remark

“Weather is the only news that never grows stale. Each morning the sky writes its own front page, and we at Wanted Weather are but its telegraph operators.”— J. Whitmore, Editor
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