Derna Temperature by Month

Derna in Libya sees significant seasonal temperature differences, with daytime highs between 17°C (63°F) in January and 33°C (91°F) in August, averaging 25°C (77°F) annually. Explore the full monthly breakdown below.

With significant temperature fluctuations, Derna enjoys distinct seasons year-round. Nighttime lows range from 23°C (73°F) in August to 8°C (46°F) in January.

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

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. August, the city's warmest month, sees 298 hours of sunshine.

The chart below shows the average temperature throughout the year:

Derna's average annual maximum temperature is 25°C (77°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Derna, January is the coolest month, with average highs of 17°C (63°F) and humidity around 75%, considered high. In August, the warmest month, temperatures average 33°C (91°F) with 80% humidity, conditions that feel very high. For a full picture, see our humidity page.

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 Derna's weather, including monthly rainfall, sunshine hours, and humidity, visit our Derna climate page.