Stykkishólmur Weather in August
Stykkishólmur in August sees moderate daytime temperatures of 13°C (55°F) and nighttime lows of 9°C (48°F). Rainfall is fairly high this month at around 93 mm (3.7 in), so pack a rain jacket to stay dry.
Rainfall in Stykkishólmur in August
You can expect rain on around 15 days based on historical patterns, with 93 mm (3.7 in) average for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Stykkishólmur in August
In August, expect moderate temperatures in Stykkishólmur, with highs of 13°C (55°F) and lows of 9°C (48°F) at night. August marks the summer season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Stykkishólmur in August
The city usually sees around 166 hours of sunlight, indicating a moderately sunny period.
Wind Speed in Stykkishólmur in August
Average wind conditions reach 5 m/s (10 knots) in August. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.
Average water temperature in August
At 10°C (50°F), the water is too cold for most people to swim comfortably. A wetsuit is pretty much essential if you plan to go in.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July typically offers the best weather for Stykkishólmur.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Stykkishólmur's climate page.
Stykkishólmur Temperature in August
Min Temperature
9°C (48°F)
Max Temperature
13°C (55°F)
Water Temperature
10°C (50°F)
Chance of Rain
49%
Precipitation
93 mm (3.7 in)
Rainy days
15 days
Humidity
81%
Windspeed
5 m/s (10 knots)
Sunshine
166 hours
Percentage Sunshine
33%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Stykkishólmur typically stay consistent throughout August, with daily highs averaging around 13°C (55°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 9°C (48°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 for Stykkishólmur in August
Browse day-by-day weather records for Stykkishólmur spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Stykkishólmur historical weather extremes in August
Based on 23 years of weather observations in Stykkishólmur between 2002 and 2025, these are the recorded extremes.
- On August 11, 2004, temperatures climbed to 20°C (68°F), marking the warmest August day on record.
- Stykkishólmur experienced its chilliest August day on August 30, 2002, reaching only 7°C (45°F).
- Stykkishólmur registered its coldest August night on August 24, 2020, with temperatures dropping to -1°C (30°F).
- Peak precipitation in August occurred on August 10, 2007, when 41 mm (1.6 in) of precipitation was measured.
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 →
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What to Wear in Stykkishólmur in August
The weather can be unpredictable in August, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Expect water temperatures of around 10°C (50°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Stykkishólmur in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Stykkishólmur's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Stykkishólmur climate overview or explore weather in Iceland.
