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Has the climate in Siliana changed?

Siliana has cooled about 1.5°F between 1996 and 2022.

About 0.9°F per decade, measured from Siliana's official daily weather records, 1996–2022. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Siliana's climate has warmed more slowly than most other cities in Tunisia.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Average temperature
−2.1°F
1970s
66.3°F
Recent
64.2°F
A small downward drift

Siliana's temperature, year by year

Average temperature for each year from 1996 to 2022.

62°64°66°68°70°1996: 64.5°F2003: 66.2°F2004: 66.8°F2005: 66.3°F2006: 67.8°F2007: 66.9°F2008: 67.5°F2009: 67.3°F2010: 67.6°F2011: 66.6°F2012: 68.4°F2016: 64.5°F2017: 63.7°F2019: 63.4°F2020: 64.0°F2022: 65.7°Flong-term trend1996201020202022
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

Methodology & sources

Temperature — 1991–2020 normals computed from 25 years of daily observations at Siliana, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →