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Has the climate in Siteki changed?

Siteki has warmed about 0.6°F between 1998 and 2017.

About 0.3°F per decade, measured from Siteki's official daily weather records, 1998–2017. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Siteki's warming is broadly in line with other cities across Africa — neither unusually fast nor unusually slow.

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
+0.4°F
1970s
71.4°F
Recent
71.9°F
A steady upward drift

Siteki's temperature, year by year

Average temperature for each year from 1998 to 2017.

68°70°72°74°1998: 71.8°F1999: 71.7°F2000: 69.8°F2001: 71.1°F2002: 71.7°F2003: 72.6°F2004: 71.7°F2005: 72.6°F2006: 71.5°F2007: 72.8°F2008: 71.7°F2009: 71.0°F2010: 71.8°F2011: 71.6°F2012: 71.7°F2013: 70.7°F2014: 71.2°F2015: 73.1°F2016: 72.7°F2017: 71.7°Flong-term trend1998200020102017
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 23 years of daily observations at Matsapha, a weather station, about 64 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →