Unmapped Dataworks

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Heat in Ward 2, Greater Letaba

Summer 2025/26: the ground in Ward 2, Greater Letaba reached about 32 °C on clear mornings. That is the ground (roofs, roads, soil), not the air. The 6th hottest of 8 summers since 2014. In summer the ground here reads −3.7 °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: 30.4 °CSummer 1994 to 95: 29.1 °CSummer 2001 to 02: 31.9 °CSummer 2002 to 03: 39.2 °CSummer 2015 to 16: 36.2 °CSummer 2017 to 18: 33.7 °CSummer 2018 to 19: 28.7 °CSummer 2019 to 20: 34.6 °CSummer 2021 to 22: 29.0 °CSummer 2022 to 23: 34.6 °CSummer 2024 to 25: 35.9 °CSummer 2025 to 26: 31.9 °C199019952000200520102015202020252026
Each summer (December to February, named by the year it ends) on clear mornings. Bars start at 26 °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 8730.4 °C
Summer 1994 to 9529.1 °C
Summer 2001 to 0231.9 °C
Summer 2002 to 0339.2 °C
Summer 2015 to 1636.2 °C
Summer 2017 to 1833.7 °C
Summer 2018 to 1928.7 °C
Summer 2019 to 2034.6 °C
Summer 2021 to 2229.0 °C
Summer 2022 to 2334.6 °C
Summer 2024 to 2535.9 °C
Summer 2025 to 2631.9 °C

The shape of a year

January: 31.0 °CFebruary: 31.7 °CMarch: 27.3 °CApril: 27.8 °CMay: 24.7 °CJune: 22.2 °CJuly: 22.0 °CAugust: 27.4 °CSeptember: 33.5 °COctober: 38.8 °CNovember: 38.1 °CDecember: 35.1 °CJanFebMarAprMayJunJulAugSepOctNovDec
Each month’s average since 2014, clear mornings. Bars start at 19 °C.
Show the numbers
Land surface temperature by calendar month, since 2014: every figure
When or whatFigure
January31.0 °C
February31.7 °C
March27.3 °C
April27.8 °C
May24.7 °C
June22.2 °C
July22.0 °C
August27.4 °C
September33.5 °C
October38.8 °C
November38.1 °C
December35.1 °C

Month by month

MonthLand surface temperatureClear looks
October 202636.6 °C5.2
September 202628.7 °C2.0
August 202627.3 °C5.4
July 202620.9 °C3.5
June 202623.0 °C3.1
May 202624.4 °C6.2
April 202627.6 °C0.3
March 2026Seen too little0.0
February 202632.2 °C2.2
January 202629.0 °C0.8
December 202534.5 °C3.3
November 202529.6 °C3.9
October 202536.8 °C3.6
September 202532.2 °C3.9
August 202524.8 °C5.9
July 202522.1 °C5.9
June 202522.8 °C3.9
May 202522.5 °C3.2
April 202527.9 °C5.3
March 2025Seen too little0.0
February 202531.9 °C1.8
January 202535.2 °C2.1
December 202440.7 °C1.6
November 202443.9 °C2.2

“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 Letaba 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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