Blue Lagoon Weather in August
In Blue Lagoon, August brings moderate daytime temperatures around 14°C (57°F), with nights cooling to 10°C (50°F). Expect quite a bit of rainfall this month.
Rainfall in Blue Lagoon in August
You can expect rain on roughly 18 days based on historical data, averaging 107 mm (4.2 in) for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Blue Lagoon in August
Temperatures in Blue Lagoon in August top out at 14°C (57°F) and drop to 10°C (50°F) overnight. Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 10°C (50°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Blue Lagoon in August
The city usually sees around 154 hours of sunlight, indicating a moderately sunny period.If your ideal day consists of dry skies and pleasant temperatures, July typically offers the best circumstances for Blue Lagoon.
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 Blue Lagoon's climate page.
Blue Lagoon Temperature in August
Min Temperature
10°C (50°F)
Max Temperature
14°C (57°F)
Chance of Rain
58%
Precipitation
107 mm (4.2 in)
Rainy days
18 days
Humidity
81% *
Sunshine
154 hours *
Percentage Sunshine
31% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Blue Lagoon typically stay consistent throughout August, with daily highs averaging around 14°C (57°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 for Blue Lagoon in August
Browse day-by-day weather records for Blue Lagoon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Blue Lagoon historical weather extremes in August
According to our 49 years of weather records for Blue Lagoon, the following extremes were recorded between 1976 and 2025.
- The hottest August day on record in Blue Lagoon reached 26°C (79°F) (August 11, 2004).
- The coldest August day was on August 27, 1992, with a maximum of 7°C (45°F).
- The coldest night in August in Blue Lagoon was on August 28, 1982, with a minimum of 3°C (37°F).
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
What to Wear in Blue Lagoon in August
Pack for changing conditions in Blue Lagoon 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 monthWhat To Do in Blue Lagoon 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 Blue Lagoon's climate page.
Temperature Rainfall Sunshine Humidity
See the full Blue Lagoon climate overview or explore weather in Iceland.
