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

Sumy in September

The short of it: Sumy in September averages a high of 20 °C (67 °F) and a low of 9 °C (48 °F), with 48 mm (1.9 in) of rain and about 12 h 32 min of daylight. Rated 4 of 5 for a visit; the best months are August and May. Source: TerraClimate climate normals, 1991–2020.

Average high 20° · low 9° · rain 48 mm · daylight 12 h 32 min

✦✦✦✦ Recommended for a visit · best months: August & May

September in Sumy brings afternoons near 20° and nights around 9°, with about 48 mm of rain over the month. The year turns hard here: highs drop 7° from August to about 20°, with nights near 9°. Rain is modest, about 48 mm, the 4th wettest month.

The sun is up for about 12 h 32 min in mid-September, 120 minutes less than a month before.

For the traveller: pack layers, a wool coat and stout boots. The Almanac rates September 4 of 5 for a visit; the finest months here are August and May.

Against its neighbours, Sumy runs warmer than most and wetter than most in September. Kovpakivskyi, 1 km to the NNW, sees much the same highs.

September in Sumy, by the numbers

Warmth rank
5th warmest of 12
Rain rank
4th wettest of 12
Versus August
7° colder, 6.0 mm more rain
Versus October
8° warmer
Day–night spread
11°
Snow season
Nov–Mar
Daylight, mid-month
12 h 32 min
Average wind
10 km/h

Neighbouring Towns

September averages · distance by the crow’s flight
TownDistanceHighLowRain
KovpakivskyiSumy1 km NNW20°9°48 mm
ZarichnyiSumy2 km SSE20°9°48 mm
BasySumy5 km SSE20°9°48 mm
TokariSumy7 km E19°9°48 mm
SadSumy7 km SW20°8°47 mm
Novi BasySumy8 km SE19°9°47 mm
Stare SeloSumy10 km S19°8°46 mm
StepanivkaSumy13 km WNW20°8°46 mm

The Almanac · Sumy Month by Month

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

The year turns hard here: highs drop 7° from August to about 20°, with nights near 9°. Rain is modest, about 48 mm, the 4th wettest month.

Climate of Sumy by month
MonthHighLowRainWindDaylightVisit
January-2°-7°43 mm13 km/h8 h 24 min✦✦
February-1°-7°32 mm13 km/h9 h 56 min✦✦
March5°-3°37 mm14 km/h11 h 43 min✦✦✦
April14°4°36 mm13 km/h13 h 45 min✦✦✦✦
May21°10°57 mm11 km/h15 h 30 min✦✦✦✦
June25°13°64 mm10 km/h16 h 30 min✦✦✦✦
July27°16°69 mm9 km/h16 h 5 min✦✦✦✦
August26°14°42 mm9 km/h14 h 32 min✦✦✦✦✦
September20°9°48 mm10 km/h12 h 32 min✦✦✦✦
October12°3°46 mm11 km/h10 h 35 min✦✦✦
November4°-1°39 mm13 km/h8 h 50 min✦✦✦
December-1°-5°39 mm13 km/h7 h 57 min✦✦

Questions Readers Ask about Sumy in September

Answered from the wire & the Almanac

What is the weather like in Sumy in September?

Days average 20 °C (67 °F) and nights 9 °C (48 °F), with about 48 mm (1.9 in) of rain over the month. The year turns hard here: highs drop 7° from August to about 20°, with nights near 9°. Rain is modest, about 48 mm, the 4th wettest month.

Is September a good time to visit Sumy?

The Almanac gives September 4 of 5 (recommended). The best months are August and May.

How long are the days in Sumy in September?

In mid-September the sun is up for about 12 h 32 min. The days are shortening — from 7 h 57 min in December to 16 h 30 min in June.

Does it snow in Sumy in September?

Hardly — September nights average 9 °C (48 °F), above freezing.

What should I pack for Sumy in September?

Layers, a warm coat and stout boots.

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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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