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

Mosfellsbær in August

The short of it: Mosfellsbær in August averages a high of 14 °C (57 °F) and a low of 9 °C (48 °F), with 79 mm (3.1 in) of rain and about 16 h 22 min of daylight. Rated 2 of 5 for a visit; the best months are July and June. Source: TerraClimate climate normals, 1991–2020.

Average high 14° · low 9° · rain 79 mm · daylight 16 h 22 min

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

August in Mosfellsbær brings afternoons near 14° and nights around 9°, with about 79 mm of rain over the month. Much like July: highs about 14°, nights near 9°. A wool coat will serve you well. Wet spells are common — about 79 mm, the 8th wettest month.

The sun is up for about 16 h 22 min in mid-August, 204 minutes less than a month before.

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

Against its neighbours, Mosfellsbær runs warmer than most and wetter than most in August. Reykjavík, 10 km to the WSW, sees much the same highs.

August in Mosfellsbær, by the numbers

Warmth rank
2nd warmest of 12
Rain rank
8th wettest of 12
Versus July
1° colder, 11 mm more rain
Versus September
3° warmer
Day–night spread
5°
Snow season
Nov–Apr
Daylight, mid-month
16 h 22 min
Average wind
20 km/h

Neighbouring Towns

August averages · distance by the crow’s flight
TownDistanceHighLowRain
ReykjavíkCapital Region10 km WSW14°9°75 mm
GrundarhverfiCapital Region11 km NW13°9°73 mm
KópavogurCapital Region12 km WSW14°9°74 mm
GarðabærCapital Region14 km SW14°9°74 mm
SeltjarnarnesCapital Region14 km W13°9°73 mm
HafnarfjörðurCapital Region16 km SW14°9°75 mm
ÁlftanesCapital Region17 km WSW13°9°72 mm
AkranesWest25 km NW13°9°67 mm

The Almanac · Mosfellsbær Month by Month

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

Much like July: highs about 14°, nights near 9°. A wool coat will serve you well. Wet spells are common — about 79 mm, the 8th wettest month.

Climate of Mosfellsbær by month
MonthHighLowRainWindDaylightVisit
January3°-1°105 mm27 km/h5 h 19 min✦
February3°-2°106 mm28 km/h8 h 24 min✦
March4°-1°99 mm28 km/h11 h 29 min✦
April7°2°66 mm26 km/h14 h 57 min✦✦
May10°4°62 mm23 km/h18 h 20 min✦✦✦
June13°7°51 mm21 km/h21 h 3 min✦✦✦
July15°9°68 mm19 km/h19 h 46 min✦✦✦
August14°9°79 mm20 km/h16 h 22 min✦✦
September11°6°102 mm24 km/h12 h 52 min✦✦
October8°3°94 mm24 km/h9 h 33 min✦
November5°1°97 mm26 km/h6 h 16 min✦
December3°-1°102 mm27 km/h4 h 11 min✦

Questions Readers Ask about Mosfellsbær in August

Answered from the wire & the Almanac

What is the weather like in Mosfellsbær in August?

Days average 14 °C (57 °F) and nights 9 °C (48 °F), with about 79 mm (3.1 in) of rain over the month. Much like July: highs about 14°, nights near 9°. A wool coat will serve you well. Wet spells are common — about 79 mm, the 8th wettest month.

Is August a good time to visit Mosfellsbær?

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

How long are the days in Mosfellsbær in August?

In mid-August the sun is up for about 16 h 22 min. The days are shortening — from 4 h 11 min in December to 21 h 3 min in June.

Does it snow in Mosfellsbær in August?

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

What should I pack for Mosfellsbær in August?

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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