Hvolsvöllur Temperature by Month

The average annual maximum temperature in Hvolsvöllur, South Iceland, Iceland is 9°C (48°F), with daytime highs ranging from 4°C (39°F) in December to 16°C (61°F) in July. This page covers monthly averages, day-night differences, and how Hvolsvöllur compares to cities worldwide.

With significant temperature fluctuations, Hvolsvöllur enjoys distinct seasons year-round. Nighttime lows range from 9°C (48°F) in July to -2°C (28°F) in December.

The chart below illustrates the average maximum day and minimum night temperatures in Hvolsvöllur by month:

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM.

The chart below shows the average temperature throughout the year:

Hvolsvöllur's average annual maximum temperature is 9°C (48°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

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.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Hvolsvöllur's weather, including monthly rainfall, sunshine hours, and humidity, visit our Hvolsvöllur climate page.