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

Selfoss Weather in May

Selfoss in May

The short of it: Selfoss in May averages a high of 10 °C (50 °F) and a low of 5 °C (40 °F), with 80 mm (3.1 in) of rain and about 18 h 15 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 10° · low 5° · rain 80 mm · daylight 18 h 15 min

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

May in Selfoss brings afternoons near 10° and nights around 5°, with about 80 mm of rain over the month. Much like April: highs about 10°, nights near 5°. A wool coat will serve you well. Wet spells are common — about 80 mm, the 11th wettest month. The snow cover usually melts away this month.

The sun is up for about 18 h 15 min in mid-May, 200 minutes more than a month before. The evenings barely darken — the light lingers past ten.

For the traveller: pack layers, a wool coat and stout boots, and an oilskin besides. The Almanac rates May 2 of 5 for a visit; the finest months here are July and August.

Against its neighbours, Selfoss runs about middling and drier than most in May. Eyrarbakki, 11 km to the SW, is 1° cooler by day.

May in Selfoss, by the numbers

Warmth rank
5th warmest of 12
Rain rank
11th wettest of 12
Versus April
3° warmer, 7.0 mm less rain
Versus June
3° colder
Day–night spread
6°
Snow season
Nov–Apr
Daylight, mid-month
18 h 15 min
Average wind
23 km/h

Neighbouring Towns

May averages · distance by the crow’s flight
TownDistanceHighLowRain
EyrarbakkiSouth11 km SW10°5°86 mm
HveragerðiSouth12 km NW10°4°82 mm
ÞorlákshöfnSouth21 km WSW11°5°78 mm
HellaSouth31 km ESE10°5°82 mm
FlúðirSouth40 km NE10°5°67 mm
MosfellsbærCapital Region43 km NW10°4°62 mm
HvolsvöllurSouth43 km ESE11°5°88 mm
HafnarfjörðurCapital Region48 km WNW10°4°59 mm

The Almanac · Selfoss Month by Month

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

Much like April: highs about 10°, nights near 5°. A wool coat will serve you well. Wet spells are common — about 80 mm, the 11th wettest month. The snow cover usually melts away this month.

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 May

Answered from the wire & the Almanac

What is the weather like in Selfoss in May?

Days average 10 °C (50 °F) and nights 5 °C (40 °F), with about 80 mm (3.1 in) of rain over the month. Much like April: highs about 10°, nights near 5°. A wool coat will serve you well. Wet spells are common — about 80 mm, the 11th wettest month. The snow cover usually melts away this month.

Is May a good time to visit Selfoss?

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

How long are the days in Selfoss in May?

In mid-May the sun is up for about 18 h 15 min. The days are lengthening — from 4 h 18 min in December to 20 h 51 min in June.

Does it snow in Selfoss in May?

Hardly — May nights average 5 °C (40 °F), above freezing.

What should I pack for Selfoss in May?

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