Unmapped Dataworks

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Heat in Ward 17, Greater Taung

Summer 2025/26: the ground in Ward 17, Greater Taung reached about 36 °C on clear mornings. That is the ground (roofs, roads, soil), not the air. The 10th hottest of 13 summers since 2014. In summer the ground here reads −1.7 °C against its municipality’s average (since 2014).

Land surface temperature is how hot the ground itself is: roofs, roads, bare soil and leaves, as a satellite sees them from above. Landsat passes at about 10 in the morning and sees only through clear skies. It is not the air temperature a weather station gives: on a sunny day the ground is often 10 to 20 degrees hotter than the air, and hard, dark, dry surfaces heat up most while trees, grass and water stay cooler.

What it is not: not the afternoon peak, not the night, not the air you feel in the shade, and not a reading at any one house. A month with clouds rests on few clear looks.

Summer 2025/26

Every summer since 1987

Summer 1986 to 87: 41.0 °CSummer 1992 to 93: 38.8 °CSummer 1996 to 97: 35.5 °CSummer 1997 to 98: 39.3 °CSummer 1998 to 99: 34.9 °CSummer 2000 to 01: 32.8 °CSummer 2001 to 02: 37.2 °CSummer 2002 to 03: 34.7 °CSummer 2012 to 13: 35.8 °CSummer 2013 to 14: 40.3 °CSummer 2014 to 15: 36.0 °CSummer 2015 to 16: 46.3 °CSummer 2016 to 17: 37.1 °CSummer 2017 to 18: 41.7 °CSummer 2018 to 19: 41.7 °CSummer 2019 to 20: 37.3 °CSummer 2020 to 21: 35.6 °CSummer 2021 to 22: 35.2 °CSummer 2022 to 23: 37.0 °CSummer 2023 to 24: 42.8 °CSummer 2024 to 25: 45.9 °CSummer 2025 to 26: 36.3 °C199019952000200520102015202020252026
Each summer (December to February, named by the year it ends) on clear mornings. Bars start at 30 °C, not zero. Darker: Landsat 8 and 9 (from 2014); lighter: Landsat 5 and 7. A gap is a summer seen too little.
Show the numbers
Land surface temperature each summer, 1987 to 2026: every figure
When or whatFigure
Summer 1986 to 8741.0 °C
Summer 1992 to 9338.8 °C
Summer 1996 to 9735.5 °C
Summer 1997 to 9839.3 °C
Summer 1998 to 9934.9 °C
Summer 2000 to 0132.8 °C
Summer 2001 to 0237.2 °C
Summer 2002 to 0334.7 °C
Summer 2012 to 1335.8 °C
Summer 2013 to 1440.3 °C
Summer 2014 to 1536.0 °C
Summer 2015 to 1646.3 °C
Summer 2016 to 1737.1 °C
Summer 2017 to 1841.7 °C
Summer 2018 to 1941.7 °C
Summer 2019 to 2037.3 °C
Summer 2020 to 2135.6 °C
Summer 2021 to 2235.2 °C
Summer 2022 to 2337.0 °C
Summer 2023 to 2442.8 °C
Summer 2024 to 2545.9 °C
Summer 2025 to 2636.3 °C

The shape of a year

January: 40.6 °CFebruary: 35.7 °CMarch: 33.2 °CApril: 27.9 °CMay: 22.9 °CJune: 18.4 °CJuly: 18.8 °CAugust: 23.7 °CSeptember: 32.5 °COctober: 39.4 °CNovember: 43.3 °CDecember: 43.1 °CJanFebMarAprMayJunJulAugSepOctNovDec
Each month’s average since 2014, clear mornings. Bars start at 16 °C.
Show the numbers
Land surface temperature by calendar month, since 2014: every figure
When or whatFigure
January40.6 °C
February35.7 °C
March33.2 °C
April27.9 °C
May22.9 °C
June18.4 °C
July18.8 °C
August23.7 °C
September32.5 °C
October39.4 °C
November43.3 °C
December43.1 °C

Month by month

MonthLand surface temperatureClear looks
October 202635.9 °C2.9
September 202628.7 °C2.1
August 202625.2 °C3.0
July 202618.0 °C3.9
June 202619.9 °C1.9
May 202621.8 °C2.0
April 202625.8 °C1.9
March 202631.7 °C2.3
February 202634.0 °C2.0
January 202639.9 °C3.9
December 202534.9 °C2.3
November 202534.3 °C1.9
October 202535.6 °C1.9
September 202530.7 °C3.9
August 202521.3 °C2.0
July 202518.8 °C3.9
June 202516.7 °C3.3
May 202519.6 °C3.1
April 202524.9 °C2.9
March 202530.8 °C1.9
February 202546.3 °C1.0
January 202539.2 °C2.8
December 202452.1 °C1.9
November 202442.6 °C2.9

“Clear looks” is how many times the average 240 m patch of the place was seen through clear sky that month. Under one, part of the place was not seen at all, so the figure leans on the part that was.

Greater Taung and its wards · Every municipality, ranked

Source

Measured from space by the American Landsat satellites: the ground, not the air.

How we worked this out

Landsat 5 to 2011, Landsat 7 to bridge the gaps, Landsat 8 and 9 from 2013: different satellites pass at slightly different times, so compare summers within the same years first.

What we changed: we kept only the clear land cells (no cloud, cloud shadow, snow or water, with a margin round each cloud), read them at 480 m, and averaged them over each 2026 ward each month; larger places are the sums of their wards.

Landsat imagery courtesy of the U.S. Geological Survey (Landsat Collection 2 surface temperature, through Digital Earth Africa’s copy).

Dataset: land surface temperature by ward, release of 13 November 2026.

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