Nesjum Temperature by Month
Nesjum in South Iceland, Iceland sees moderate seasonal temperature shifts, with daytime highs between 3°C (37°F) in February and 12°C (54°F) in July, averaging 6°C (43°F) annually. Explore the full monthly breakdown below.
Nesjum Monthly Temperatures
The moderate changes in the climate in Nesjum ensure gradual weather shifts through each season. At night, temperatures drop to between 7°C (45°F) and -3°C (27°F) depending on the time of year.
The chart below illustrates the average maximum day and minimum night temperatures in Nesjum by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 141 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Nesjum 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
warm
pleasant
moderate
cold
very cold
Nesjum vs World: Temperature Compared
Nesjum'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.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
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 Nesjum this rarely lasts long on the ground.
For more on Nesjum's weather — including monthly rainfall, sunshine hours, and humidity — visit our Nesjum climate page.
