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Weather in Iceland in August

Facts verified 2026-08-04Updated 2026-08-04Weather

The normals AND the records on one table — 14.1°C normal high, 24.8°C record, −0.4°C record low — plus a live reading and the computed daylight slide.

Skógafoss waterfall in full flow with a double rainbow arcing through its spray over dark wet gravel, under a sky that is half blue and half cloud.
Icelandic weather in one frame: sun and spray at once, and Skógafoss wearing its rainbow. Photo: Jeremy Goldberg, CC0, via Wikimedia Commons.
Short answer

August weather in Iceland: normals of 8.6–14.1°C in Reykjavík, rain about one day in three (64.5 mm), and the records that calibrate packing — an all-time high of 24.8°C and a record low of −0.4°C. Days shrink from eighteen hours to under fifteen; the live reading below shows right now.

What is the weather in Iceland right now?

TownNowWindSky
Reykjavík8°C6 m/sOvercast
Vík7°C9 m/sOvercast
Höfn1°C2 m/sClear sky
Borgarnes7°C9 m/sOvercast

Live Open-Meteo readings for our reference towns, fetched at render. The full live board — roads, alerts, aurora, webcams — is Iceland Pulse.

August in Reykjavík — the whole table

MetricValueWhat it means
Mean daily high14.1°CSecond-warmest month (July: 14.9)
Mean daily low8.6°CNights stay in single digits
Record high24.8°CIt happens — rarely, briefly
Record low−0.4°CReykjavík has frozen in August
Precipitation64.5 mmOver 11.6 wet days — one day in three
Sunshine164.8 hDown from May’s 209.0 peak

Averages describe the middle; the records describe the suitcase. A month whose honest range runs from 24.8°C to a hair below freezing is a month for layers — a warm mid-layer and a windproof shell over anything, per the packing guide. And the wind decides how every number feels: 12°C calm is a t-shirt; 12°C at 15 m/s is a coat.

How much daylight does August have?

DateSunriseSunsetDay length
08-0104:3222:3718 h 05 m
08-1005:0122:0617 h 06 m
08-2005:3221:3116 h 00 m
08-3106:0520:5214 h 48 m

Computed, not copied — sunrise and sunset for 2026 at Reykjavík’s own coordinates (64.15, -21.94), NOAA solar algorithm. August sheds 3 h 17 m across the month — the year turning in real time.

What is late August like?

The month with two personalities: by the 31st the sun sets at 20:52 and the day is down to 14 h 48 m — real darkness returns to the small hours, which ends the midnight-sun feeling and opens the first aurora chances of the season in the final nights. Evenings cool noticeably; the one-day-in-three showers keep their rhythm.

Everything stays open — highlands included — while the crowds begin to thin after mid-month. For the full what-to-do picture the month pillar carries it: Iceland in August, including the 12 August 2026 eclipse this page’s sky-watching readers already care about. From there, September is where late August is heading — wetter, darker, aurora-real.

Cars & campers

−12%exclusive discountFree cancellationKEF airport pickup 24/74.8
Dacia Duster 4x4
SUV

Dacia Duster 4x4

Cheapest real 4WD in the fleet — gravel, the Westfjords and easy summer F-roads without truck prices.

TransmissionManual
FuelPetrol/diesel
Seats5
Drive4WD
From
5,355 kr6,300 kr/day
Reserve −12%
VW Caravelle
9-seater

VW Caravelle

Whole family or friend group in one car — gear in the back, room to stretch.

TransmissionAutomatic
FuelDiesel
Seats9
Drive2WD
From
12,750 kr15,000 kr/day
Reserve −12%
Key Camper Wild Duo
Camper

Key Camper Wild Duo

Sleep right by the trailhead, wake up at the falls — F-road ready from mid-June.

TransmissionManual
FuelPetrol
Sleeps2
Drive4WD
From
5,304 kr6,240 kr/day
Reserve −12%

August weather — questions people actually ask

What is the weather in Iceland in August?
High summer, Icelandic edition: the 1991–2020 normals give Reykjavík 8.6°C to 14.1°C, rain on roughly one day in three (64.5 mm across 11.6 wet days), and 164.8 hours of sunshine. Days start at eighteen hours of light and end the month at just under fifteen. The defining feature is variety — sun, shower, wind and calm can all visit before dinner, which is why the packing answer is always layers.
How warm does Iceland get in August?
The records calibrate it best: the all-time August high in Reykjavík is 24.8°C, and days in the high teens feel genuinely warm in the dry, clear air. But the same table holds a −0.4°C record low — the capital has technically frozen in August. Normal reality sits between: mid-teens by day, single digits at night, and the highlands always several degrees colder than the coast.
Does it rain a lot in Iceland in August?
Regularly rather than heavily: 64.5 mm spread over about 12 wet days means one day in three sees measurable rain, usually as showers that pass rather than settle. August is wetter than June (43.3 mm) but far from the autumn soakings — September jumps to 87.0 mm. The south coast catches more than the north; a shower at Skógafoss like the one in the photo often ends in a rainbow.
What should I wear in Iceland in August?
Three layers solve every August day: a base tee, a warm mid-layer (fleece or light wool), and a wind-and-waterproof shell. Add a hat for boat trips and highland evenings. Skip the umbrella — Icelandic rain arrives sideways on wind that turns umbrellas inside out. Proper walking shoes beat sandals everywhere except the pools, which is where the swimsuit earns its place in the bag.
Is late August different from early August?
Meaningfully — the month turns at the end. The computed table shows August shedding over three hours of daylight: from an 18-hour day on the 1st to under fifteen by the 31st, with sunsets back before 21:00. Real darkness returns to the night sky, which closes the midnight-sun feeling and opens the first aurora chances of the season in the final nights. Evenings cool faster; the shoulder season is knocking.
Can it freeze in Iceland in August?
At the coast, almost never — but not literally never: Reykjavík's August record low is −0.4°C, printed in the same normals table as the summer averages. In the highlands, night frost in late August is a normal event rather than a record, which is why highland hikers carry proper insulation even in high summer. Ground frost is a different figure and dips below zero more often than the air record suggests.
How windy is Iceland in August?
August is the calm end of the Icelandic spectrum, but calm is relative — the wind is the variable that decides how any temperature feels, and this page's live reading shows what it is doing right now. Summer lows mean fewer storms than winter; exposed stretches (Hafnarfjall, Kjalarnes, the sandur crossings) still gust enough to matter to campers and roof boxes. Check the live figure before a long driving day, not the average.

Photograph: Skógafoss with double rainbow by Jeremy Goldberg, CC0, via Wikimedia Commons. Climate normals 1991–2020 (including the record rows): Icelandic Met Office, as published in the Reykjavík climate table, read 4 August 2026. Daylight computed at render (NOAA solar algorithm, Reykjavík coordinates; Iceland keeps UTC year-round). Live reading: Open-Meteo via our Pulse feed at render time, shown only when the feed answers.

Iceland nowfrom 19 Sep 06:10
8°C · overcastWind 2 m/sRing Road (R1) openAurora Kp 2.67Daylight 07:02 – 19:39Webcams