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Siglufjörður Weather in August
Thinking of visiting Siglufjörður in August? Expect low temperatures reaching 11°C (52°F) during the day, dropping to 7°C (45°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Siglufjörður in August
You can expect rain on around 16 days based on historical patterns, with 94 mm (3.7 in) average for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Siglufjörður in August
August in Siglufjörður brings typical temperatures with highs around 11°C (52°F) and lows of 7°C (45°F). Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets. On average, it is the month with the highest temperature of the year.
Sunshine in Siglufjörður in August
You can expect a moderate amount of sunlight, with approximately 136 hours. This means a pleasant mix of sun and overcast.If you're inclined towards comfortable temperatures and drier conditions, August is a good time to visit Siglufjörður.
Siglufjörður Temperature in August
Min Temperature
7°C (45°F)
Max Temperature
11°C (52°F)
Chance of Rain
52%
Precipitation
94 mm (3.7 in)
Rainy days
16 days
Humidity
77% *
Sunshine
136 hours *
Percentage Sunshine
23% *
* Data from: Akureyri, Iceland (64 KM, 39 Miles).
Siglufjörður Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Siglufjörður - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Siglufjörður typically stay consistent throughout August, with daily highs averaging around 11°C (52°F). Nights are cold, with lows typically ranging from 5°C (41°F) to 7°C (45°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 Siglufjörður in August
Browse day-by-day weather records for Siglufjörður spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Siglufjörður historical weather extremes in August
According to our 50 years of weather records for Siglufjörður, the following extremes were recorded between 1976 and 2026.
- On August 25, 2021, temperatures climbed to 23°C (73°F), marking the warmest August day on record.
- The coldest August day was on August 29, 1992, with a maximum of 5°C (41°F).
- Siglufjörður registered its coldest August night on August 26, 1980, with temperatures dropping to -11°C (12°F).
- Peak precipitation in August occurred on August 23, 2024, when 43 mm (1.7 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 →
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 Siglufjörður in August
Pack for changing conditions in Siglufjörður in August. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Siglufjörður 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
Siglufjörður 3-Day Forecast
More climate data for Siglufjörður
Temperature Rainfall Sunshine Humidity
See the full Siglufjörður 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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