Windhoek Climate Trends
Namibia · Africa · 50 years of climate trend data
This page tracks how Windhoek's climate has shifted over 50 years of daily measurements, warmer summers, milder winters, and changes in rainfall, rather than current conditions. The two clearest signs of change: extremely hot days have grown by 42.2 a year and the growing season has grown 4 days shorter. Measurement period: the last 50 years (1976-2025).
Data through September 13, 2026.
Frequently asked questions about Windhoek's climate
How much warmer have summers in Windhoek become?
The average daytime high across June, July and August rose by 1.5°C between 1976-1980 and 2021-2025. That is a five-year average at each end rather than two isolated summers, so a single exceptional heatwave or cool summer does not drive the number.
Have winters in Windhoek become milder?
The average daytime high across December, January and February rose by 1.2°C between 1976-1980 and 2021-2025. In many capitals in this dataset winter is changing faster than summer, which shows up most clearly in the frost-day count below.
How many days above 30°C does Windhoek get a year?
Windhoek averaged 102 days a year above 30°C in 2021-2025, up from 59 in 1976-1980. These are the days that set peak cooling demand and the days hospitals see heat complaints rise.
How many frost days does Windhoek still get?
Windhoek averaged 5 frost days a year in 2021-2025, up from 3 in 1976-1980. The frost count actually grew here, which is rare in this dataset.
Is spring arriving earlier in Windhoek?
Spring now starts about 0.1 weeks earlier than in 1976-1980. The start point is the first day the trailing seven-day average high crosses 12°C, a fixed in-house measure used only to compare Windhoek against itself rather than against other cities.
Has the growing season in Windhoek grown longer?
The growing season is about 4 days shorter between 1976-1980 and 2021-2025. That is the stretch between the start of spring and the first autumn night below freezing, which is exactly the window gardens, farming and pollen seasons run inside.
Is rainfall in Windhoek getting heavier?
Windhoek averaged 6.6 days a year with more than 20mm of rain in 2021-2025, up from 6.2 in 1976-1980. Warmer air holds more water vapour, so the same annual rainfall increasingly arrives in shorter, harder bursts, which loads drains and water storage more than the annual total suggests.
