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Has the climate in Tamanghasset changed?

Tamanghasset has warmed about 2.3°F between 1971 and 2004.

About 0.7°F per decade, measured from Tamanghasset's official daily weather records, 1971–2004. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Tamanghasset's warming is broadly in line with other cities in Algeria — 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.

Freezing nights
about the same
1970s
3 / yr
Recent
3 / yr
Winters about as cold as before
Average temperature
+1.5°F
1970s
71.4°F
Recent
72.9°F
A steady upward drift
Hot days above 90°F
14 more days
1970s
135 / yr
Recent
149 / yr
More days of serious heat
Rainy days
about the same
1970s
10 / yr
Recent
10 / yr
Rainfall pattern about the same

Tamanghasset's temperature, year by year

Average temperature for each year from 1971 to 2004.

68°70°72°74°1971: 71.2°F1972: 70.7°F1973: 71.0°F1974: 70.0°F1975: 70.6°F1976: 70.3°F1977: 72.1°F1978: 72.2°F1979: 72.5°F1980: 72.7°F1981: 72.2°F1982: 71.2°F1983: 71.9°F1984: 71.3°F1985: 71.8°F1986: 72.2°F1987: 73.3°F1988: 73.1°F1989: 72.1°F1990: 72.8°F1991: 71.9°F1992: 70.9°F1993: 72.0°F1994: 71.7°F1995: 72.3°F1996: 73.0°F1997: 72.4°F1998: 73.4°F1999: 72.8°F2000: 72.6°F2001: 73.4°F2002: 73.4°F2003: 73.4°F2004: 73.1°Flong-term trend19711980199020002004
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.

In day-to-day terms, that long-term shift shows up as about 4 more days above 90°F compared with the 1970s.

When in the year the change shows up

How much warmer each month is now than in the 1970s. Useful if you garden or care about a particular season — otherwise the headline above already has the answer.

-0.5°0.0°+0.5°+1.0°+1.5°January: +0.1°F+0.1JFebruary: +0.0°F+0.0FMarch: +0.4°F+0.4MApril: +0.1°F+0.1AMay: +0.2°F+0.2MJune: -0.1°F-0.1JJuly: +0.7°F+0.7JAugust: +0.7°F+0.7ASeptember: +1.3°F+1.3SOctober: +0.7°F+0.7ONovember: +0.7°F+0.7NDecember: +0.8°F+0.8D

September has warmed the most — about 1.3°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — 1991–2020 normals computed from 13 years of daily observations at Tamanrasset, a weather station, about 9 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →