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

Slagelse in September

The short of it: Slagelse in September averages a high of 18 °C (64 °F) and a low of 12 °C (54 °F), with 60 mm (2.4 in) of rain and about 12 h 37 min of daylight. Rated 4 of 5 for a visit; the best months are June and September. Source: TerraClimate climate normals, 1991–2020.

Average high 18° · low 12° · rain 60 mm · daylight 12 h 37 min

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

September in Slagelse brings afternoons near 18° and nights around 12°, with about 60 mm of rain over the month. Much like August: highs about 18°, nights near 12°. A wool coat will serve you well. Wet spells are common — about 60 mm, the 4th wettest month.

The sun is up for about 12 h 37 min in mid-September, 142 minutes less than a month before.

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

Against its neighbours, Slagelse runs warmer than most and wetter than most in September. Korsør, 16 km to the WSW, sees much the same highs.

September in Slagelse, by the numbers

Warmth rank
4th warmest of 12
Rain rank
4th wettest of 12
Versus August
4° colder, 15 mm less rain
Versus October
5° warmer
Day–night spread
6°
Snow season
Dec–Mar
Daylight, mid-month
12 h 37 min
Average wind
18 km/h

Neighbouring Towns

September averages · distance by the crow’s flight
TownDistanceHighLowRain
KorsørZealand16 km WSW17°13°55 mm
Klinteby FrihedZealand28 km SE17°12°55 mm
RingstedZealand28 km E17°12°57 mm
NæstvedZealand32 km SE17°12°57 mm
KalundborgZealand35 km NNW18°12°53 mm
NyborgSouth Denmark37 km WSW18°12°55 mm
HaslevZealand40 km ESE17°12°60 mm
HolbækZealand42 km NNE17°12°55 mm

The Almanac · Slagelse Month by Month

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

Much like August: highs about 18°, nights near 12°. A wool coat will serve you well. Wet spells are common — about 60 mm, the 4th wettest month.

Climate of Slagelse by month
MonthHighLowRainWindDaylightVisit
January3°0°48 mm21 km/h7 h 40 min✦✦
February3°-1°37 mm20 km/h9 h 33 min✦✦✦
March6°1°36 mm19 km/h11 h 39 min✦✦✦
April11°5°32 mm17 km/h14 h 4 min✦✦✦✦
May16°9°49 mm17 km/h16 h 11 min✦✦✦✦
June20°13°55 mm18 km/h17 h 26 min✦✦✦✦
July22°15°75 mm16 km/h16 h 54 min✦✦✦
August21°15°75 mm17 km/h15 h 0 min✦✦✦
September18°12°60 mm18 km/h12 h 37 min✦✦✦✦
October12°8°64 mm19 km/h10 h 19 min✦✦✦
November8°5°58 mm20 km/h8 h 13 min✦✦
December4°1°55 mm20 km/h7 h 7 min✦✦

Questions Readers Ask about Slagelse in September

Answered from the wire & the Almanac

What is the weather like in Slagelse in September?

Days average 18 °C (64 °F) and nights 12 °C (54 °F), with about 60 mm (2.4 in) of rain over the month. Much like August: highs about 18°, nights near 12°. A wool coat will serve you well. Wet spells are common — about 60 mm, the 4th wettest month.

Is September a good time to visit Slagelse?

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

How long are the days in Slagelse in September?

In mid-September the sun is up for about 12 h 37 min. The days are shortening — from 7 h 7 min in December to 17 h 26 min in June.

Does it snow in Slagelse in September?

Hardly — September nights average 12 °C (54 °F), above freezing.

What should I pack for Slagelse in September?

Layers, a warm coat and stout boots, plus a good raincoat — it is a wet month.

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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