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

Cavan Weather in September

Cavan in September

The short of it: Cavan in September averages a high of 17 °C (62 °F) and a low of 9 °C (48 °F), with 96 mm (3.8 in) of rain and about 12 h 36 min of daylight. Rated 3 of 5 for a visit; the best months are July and August. Source: TerraClimate climate normals, 1991–2020.

Average high 17° · low 9° · rain 96 mm · daylight 12 h 36 min

✦✦✦ Fair for a visit · best months: July & August

September in Cavan brings afternoons near 17° and nights around 9°, with about 96 mm of rain over the month. Much like August: highs about 17°, nights near 9°. A wool coat will serve you well. Wet spells are common — about 96 mm, the 6th wettest month.

The sun is up for about 12 h 36 min in mid-September, 134 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 3 of 5 for a visit; the finest months here are July and August.

Against its neighbours, Cavan runs about middling and wetter than most in September. Monaghan, 38 km to the NE, sees much the same highs.

September in Cavan, by the numbers

Warmth rank
4th warmest of 12
Rain rank
6th wettest of 12
Versus August
2° colder, 16 mm less rain
Versus October
4° warmer
Day–night spread
8°
Snow season
seldom any
Daylight, mid-month
12 h 36 min
Average wind
12 km/h

Neighbouring Towns

September averages · distance by the crow’s flight
TownDistanceHighLowRain
MonaghanUlster38 km NE17°9°96 mm
LongfordLeinster41 km SW17°9°84 mm
EnniskillenNorthern Ireland44 km NNW17°10°103 mm
An Muileann gCearrLeinster52 km S17°9°82 mm
NavanLeinster58 km SE17°9°85 mm
ArmaghNorthern Ireland60 km NE17°10°69 mm
TrimLeinster61 km SE17°9°90 mm
DundalkLeinster62 km E17°9°86 mm

The Almanac · Cavan Month by Month

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

Much like August: highs about 17°, nights near 9°. A wool coat will serve you well. Wet spells are common — about 96 mm, the 6th wettest month.

Climate of Cavan by month
MonthHighLowRainWindDaylightVisit
January8°2°120 mm15 km/h7 h 55 min✦
February8°2°96 mm15 km/h9 h 41 min✦
March10°3°85 mm15 km/h11 h 40 min✦
April12°5°76 mm13 km/h13 h 57 min✦✦
May15°7°80 mm13 km/h15 h 57 min✦✦
June18°10°88 mm12 km/h17 h 6 min✦✦✦
July19°11°94 mm11 km/h16 h 37 min✦✦✦
August19°11°112 mm11 km/h14 h 50 min✦✦✦
September17°9°96 mm12 km/h12 h 36 min✦✦✦
October13°7°123 mm13 km/h10 h 24 min✦✦
November10°4°138 mm14 km/h8 h 25 min✦
December8°2°120 mm14 km/h7 h 24 min✦

Questions Readers Ask about Cavan in September

Answered from the wire & the Almanac

What is the weather like in Cavan in September?

Days average 17 °C (62 °F) and nights 9 °C (48 °F), with about 96 mm (3.8 in) of rain over the month. Much like August: highs about 17°, nights near 9°. A wool coat will serve you well. Wet spells are common — about 96 mm, the 6th wettest month.

Is September a good time to visit Cavan?

The Almanac gives September 3 of 5 (fair). The best months are July and August.

How long are the days in Cavan in September?

In mid-September the sun is up for about 12 h 36 min. The days are shortening — from 7 h 24 min in December to 17 h 6 min in June.

Does it snow in Cavan in September?

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

What should I pack for Cavan 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
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