Jokulsarlon Glacial Lagoon Temperature by Month
Jokulsarlon Glacial Lagoon, Iceland has an average annual maximum temperature of 6°C (43°F), with moderate seasonal shifts ranging from 2°C (36°F) in February to 10°C (50°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Jokulsarlon Glacial Lagoon Monthly Temperatures
Seasonal changes in Jokulsarlon Glacial Lagoon bring a little variety without extreme temperature swings. Nighttime lows range from 6°C (43°F) in July to -3°C (27°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Jokulsarlon Glacial Lagoon by month:
Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. July, the warmest month, sees 141 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in July
Historical Jokulsarlon Glacial Lagoon Temperatures: 1976-2026
Browse day-by-day temperature records for Jokulsarlon Glacial Lagoon spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Jokulsarlon Glacial Lagoon vs Iceland
The map below shows the annual temperature across Iceland. You can also select individual months if you want to compare a specific time of year.
very warm
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Jokulsarlon Glacial Lagoon vs World: Temperature Compared
Jokulsarlon Glacial Lagoon's average annual maximum temperature is 6°C (43°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Jokulsarlon Glacial Lagoon this rarely lasts long on the ground.
For more on Jokulsarlon Glacial Lagoon's weather — including monthly rainfall, sunshine hours, and humidity — visit our Jokulsarlon Glacial Lagoon climate page.
