Free tools · Measured from space

Heat in Ward 12, Langeberg

Summer 2025/26: the ground in Ward 12, Langeberg reached about 37 °C on clear mornings. That is the ground (roofs, roads, soil), not the air. The 5th hottest of 13 summers since 2014. In summer the ground here reads −0.9 °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

37.1 °CThe ground, not the airDecember to February, clear mornings
2019/20Hottest summer since 201439.1 °C; the coolest was 2013/14, 34.9 °C
−0.9 °CAgainst its municipalityThe ward’s summers against the municipality’s average, 13 summers since 2014

Every summer since 1987

Each summer (December to February, named by the year it ends) on clear mornings. Bars start at 27 °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 what	Figure
Summer 1986 to 87	33.6 °C
Summer 1988 to 89	32.2 °C
Summer 1989 to 90	35.8 °C
Summer 1990 to 91	32.9 °C
Summer 1992 to 93	32.6 °C
Summer 1993 to 94	35.0 °C
Summer 1994 to 95	34.5 °C
Summer 1995 to 96	29.4 °C
Summer 1996 to 97	29.4 °C
Summer 1998 to 99	32.5 °C
Summer 2001 to 02	37.7 °C
Summer 2002 to 03	39.4 °C
Summer 2003 to 04	35.5 °C
Summer 2011 to 12	36.1 °C
Summer 2012 to 13	37.9 °C
Summer 2013 to 14	34.9 °C
Summer 2014 to 15	35.6 °C
Summer 2015 to 16	38.4 °C
Summer 2016 to 17	37.9 °C
Summer 2017 to 18	35.5 °C
Summer 2018 to 19	36.0 °C
Summer 2019 to 20	39.1 °C
Summer 2020 to 21	37.5 °C
Summer 2021 to 22	35.8 °C
Summer 2022 to 23	36.3 °C
Summer 2023 to 24	36.2 °C
Summer 2024 to 25	36.5 °C
Summer 2025 to 26	37.1 °C

The shape of a year

Each month’s average since 2014, clear mornings. Bars start at 12 °C.

Show the numbers

Land surface temperature by calendar month, since 2014: every figure
When or what	Figure
January	38.5 °C
February	34.1 °C
March	31.1 °C
April	23.9 °C
May	19.1 °C
June	14.0 °C
July	14.2 °C
August	17.2 °C
September	22.2 °C
October	28.8 °C
November	33.9 °C
December	37.5 °C

Month by month

Month	Land surface temperature	Clear looks
October 2026	30.8 °C	2.3
September 2026	20.6 °C	2.2
August 2026	18.4 °C	2.0
July 2026	15.7 °C	1.2
June 2026	12.0 °C	1.4
May 2026	16.1 °C	0.7
April 2026	24.6 °C	0.4
March 2026	28.9 °C	3.5
February 2026	34.3 °C	1.3
January 2026	38.6 °C	5.2
December 2025	38.3 °C	5.0
November 2025	38.2 °C	5.3
October 2025	30.9 °C	3.7
September 2025	23.4 °C	2.5
August 2025	19.5 °C	1.6
July 2025	15.8 °C	1.4
June 2025	12.1 °C	1.4
May 2025	18.8 °C	0.5
April 2025	22.3 °C	1.8
March 2025	33.9 °C	1.9
February 2025	35.1 °C	4.2
January 2025	38.6 °C	5.2
December 2024	35.8 °C	4.7
November 2024	31.5 °C	4.2

“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.

Langeberg 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.