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

Selfoss Weather in September

Selfoss in September

The short of it: Selfoss in September averages a high of 11 °C (53 °F) and a low of 7 °C (44 °F), with 140 mm (5.5 in) of rain and about 12 h 52 min of daylight. Rated 2 of 5 for a visit; the best months are July and August. Source: TerraClimate climate normals, 1991–2020.

Average high 11° · low 7° · rain 140 mm · daylight 12 h 52 min

✦✦ Travel with care for a visit · best months: July & August

September in Selfoss brings afternoons near 11° and nights around 7°, with about 140 mm of rain over the month. Much like August: highs about 11°, nights near 7°. A wool coat will serve you well. It is the wettest month of the year here, about 140 mm.

The sun is up for about 12 h 52 min in mid-September, 207 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 2 of 5 for a visit; the finest months here are July and August.

Against its neighbours, Selfoss runs warmer than most and wetter than most in September. Eyrarbakki, 11 km to the SW, sees much the same highs.

September in Selfoss, by the numbers

Warmth rank
4th warmest of 12
Rain rank
1st wettest of 12
Versus August
3° colder, 35 mm more rain
Versus October
4° warmer
Day–night spread
5°
Snow season
Nov–Apr
Daylight, mid-month
12 h 52 min
Average wind
25 km/h

Neighbouring Towns

September averages · distance by the crow’s flight
TownDistanceHighLowRain
EyrarbakkiSouth11 km SW11°7°146 mm
HveragerðiSouth12 km NW11°6°140 mm
ÞorlákshöfnSouth21 km WSW12°6°133 mm
HellaSouth31 km ESE11°7°130 mm
FlúðirSouth40 km NE11°6°109 mm
MosfellsbærCapital Region43 km NW11°6°102 mm
HvolsvöllurSouth43 km ESE11°7°134 mm
HafnarfjörðurCapital Region48 km WNW11°6°95 mm

The Almanac · Selfoss Month by Month

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

Much like August: highs about 11°, nights near 7°. A wool coat will serve you well. It is the wettest month of the year here, about 140 mm.

Climate of Selfoss by month
MonthHighLowRainWindDaylightVisit
January3°-1°128 mm29 km/h5 h 24 min✦
February3°-2°124 mm30 km/h8 h 27 min✦
March4°-1°120 mm29 km/h11 h 29 min✦
April7°2°87 mm26 km/h14 h 55 min✦
May10°5°80 mm23 km/h18 h 15 min✦✦
June13°8°72 mm21 km/h20 h 51 min✦✦
July14°9°91 mm20 km/h19 h 38 min✦✦
August14°9°105 mm20 km/h16 h 19 min✦✦
September11°7°140 mm25 km/h12 h 52 min✦✦
October8°3°118 mm25 km/h9 h 35 min✦
November5°1°118 mm27 km/h6 h 21 min✦
December3°-1°130 mm28 km/h4 h 18 min✦

Questions Readers Ask about Selfoss in September

Answered from the wire & the Almanac

What is the weather like in Selfoss in September?

Days average 11 °C (53 °F) and nights 7 °C (44 °F), with about 140 mm (5.5 in) of rain over the month. Much like August: highs about 11°, nights near 7°. A wool coat will serve you well. It is the wettest month of the year here, about 140 mm.

Is September a good time to visit Selfoss?

The Almanac gives September 2 of 5 (travel with care). The best months are July and August.

How long are the days in Selfoss in September?

In mid-September the sun is up for about 12 h 52 min. The days are shortening — from 4 h 18 min in December to 20 h 51 min in June.

Does it snow in Selfoss in September?

Hardly — September nights average 7 °C (44 °F), above freezing.

What should I pack for Selfoss 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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