Kilimanjaro’s Temperature Trends Change With Elevation, Study Finds

One mountain, different trends

November 4, 2026 · 1:38 p.m. Central

Temperatures on Mount Kilimanjaro have not all changed in the same way: a research team found warming near the summit during clear-sky daytime conditions, alongside cooling at some middle elevations over the period it studied.

The peer-reviewed study, published October 5 in npj Climate and Atmospheric Science, combined mountain weather observations with satellite information and a computer model. Its detailed trend analysis covers 2004–2019; it does not describe every day or every weather condition.

The findings offer a more detailed look at a mountain where long-term high-altitude observations are unusually valuable, according to the University of Portsmouth’s record of the paper.

What the researchers found

For the 2004–2019 clear-sky daytime trend, the team estimated an increase near the summit of about 0.05 to 0.10 degrees Celsius per decade. Around 3,000 to 3,500 meters above sea level, the modeled trend showed cooling of about 0.13 to 0.14 degrees Celsius per decade.

Nighttime estimates showed modest warming at most elevations while the summit was close to unchanged, according to the paper’s abstract. These are estimated trends for selected conditions and locations, not temperatures for a particular day.

The researchers say vegetation and land-cover changes coincided with the middle-slope cooling and may affect local temperature patterns. The study does not establish that cooling on a portion of one mountain reverses global warming.

How the team mapped temperatures

The researchers combined long-term air-temperature measurements at different heights with satellite observations of land-surface temperature and other environmental data. They used machine learning to estimate air temperatures across the mountain for clear-sky satellite passes.

That distinction matters: a satellite measures the temperature of the land surface, which can differ from the air that a weather station records. The model helps bridge those measurements, but the resulting maps are estimates rather than a thermometer reading at every point.

Researcher Harold Lovell said combining ground and satellite measurements could help researchers examine other mountains where weather stations are sparse, according to a University of Portsmouth release carried by Mirage News. It is a single study of one mountain and should not be treated as a universal pattern for all tropical peaks.

Where researchers looked

The star marks the approximate Mount Kilimanjaro area in northern Tanzania, near the Kenyan border. It is not the location of a particular sensor.

Study timeline

1. 2004–2024 — Period covered by the team’s modeled clear-sky temperature maps.
2. 2004–2019 — Period used for the reported trend analysis.
3. October 5, 2026 — The paper is published online.

Sources and visual credits

University of Portsmouth: paper record and abstract · npj Climate and Atmospheric Science: study · University release via Mirage News.

Visual: conceptual mountain illustration, not a photograph or temperature map. Map data: OpenStreetMap contributors, ODbL.