Iceland Airwaves Festival
On its way to its 20th edition in 2019 Iceland Airwaves is a festival you need to visit once in your life. Everything from lagoons and bookstores to bars and concert halls is filled with music.
Grundarfjordur Weather in August
August in Grundarfjordur typically sees daytime highs of 13°C (55°F) and nighttime lows of 9°C (48°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the summer season.
Rainfall in Grundarfjordur in August
Typically, about 15 days will experience rainfall, with an average of 90 mm (3.5 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Grundarfjordur in August
In August, expect moderate temperatures in Grundarfjordur, with highs of 13°C (55°F) and lows of 9°C (48°F) at night. August is known for being in the summer season. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Grundarfjordur in August
The city usually sees around 166 hours of sunlight, indicating a moderately sunny period.If you're a fan of comfortable temperatures and drier conditions, August is a great time to visit.
Grundarfjordur Temperature in August
Min Temperature
9°C (48°F)
Max Temperature
13°C (55°F)
Chance of Rain
51%
Precipitation
90 mm (3.5 in)
Rainy days
15 days
Humidity
81% *
Sunshine
166 hours *
Percentage Sunshine
33% *
* Data from: Stykkishólmur, Iceland (30 KM, 19 Miles).
Grundarfjordur Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Grundarfjordur - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Grundarfjordur typically stay consistent throughout August, with daily highs averaging around 13°C (55°F). Nights are cool, with lows around 8°C (46°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather records for Grundarfjordur in August
Browse day-by-day weather records for Grundarfjordur spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Grundarfjordur historical weather extremes in August
Based on 24 years of weather observations (2002-2026), these are the most extreme conditions recorded in Grundarfjordur.
- Grundarfjordur recorded its highest August temperature of 20°C (68°F) on August 11, 2004.
- The coldest August day was on August 30, 2002, with a maximum of 7°C (45°F).
- Grundarfjordur registered its coldest August night on August 26, 2005, with temperatures dropping to 1°C (34°F).
- The wettest August day on record brought 34 mm (1.3 in) of precipitation to Grundarfjordur (August 10, 2007).
Best Places in Iceland in August
Find out more about the weather in Iceland and which places have the best travel conditions in this month. See all of Iceland in August →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Grundarfjordur in August
The weather can swing between comfortable and chilly in August, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Grundarfjordur in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports6/10
Grundarfjordur 3-Day Forecast
More climate data for Grundarfjordur
Temperature Rainfall Sunshine Humidity
See the full Grundarfjordur climate overview or explore weather in Iceland.
Popular in August
Where to go in August - average daytime high across popular destinations.
Hella
16°C (61°F) Selfoss15°C (59°F) Reykjavík15°C (59°F) Kópavogur15°C (59°F) Egilsstadir
13°C (55°F) Keflavík13°C (55°F) Höfn
12°C (54°F) Akureyri13°C (55°F) Bucket list
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