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Global Warming Overshoot: Why It Matters to Kenya
Crossing 1.5°C is not the end of climate action. It is a warning that the choices we make now matter even more.
Picture a farmer planting maize after the rains begin, only for the rains to disappear weeks later.
Elsewhere, heavy rainfall washes away a road linking farmers to the market. Food prices rise. Families spend more on water. Businesses lose working hours as supplies are delayed.
These are not distant climate scenarios. They are already familiar realities in Kenya.
Now imagine them becoming more frequent, more severe and more expensive to recover from.
That is where the idea of global warming overshoot comes in.
What Does Overshoot Mean?
Under the Paris Agreement, countries agreed to pursue efforts to limit global warming to 1.5°C above pre-industrial levels.
The world is now expected to exceed that threshold.
UNEP’s latest report says exceeding 1.5°C is now widely considered unavoidable under current policies and near-term pathways. But it also stresses that the height and duration of that overshoot still depend on decisions made today.
In simple terms, overshoot means the world goes above 1.5°C, reaches a peak and eventually works to bring temperatures back down.
The important point is this: the higher the peak and the longer we stay there, the greater the risks.
That makes every fraction of a degree important.
Why Should Kenya Care?
Because 1.5°C, 1.7°C or 2°C are not just numbers.
They translate into real impacts on farms, businesses, households and public budgets.
Kenya’s climate plan says extreme weather already costs the economy about 3–5% of GDP annually. The country also recorded more than US$650 million in direct drought losses in 2023, followed by more than US$1.46 billion in flood losses in 2024.
Kenya is particularly exposed because much of its economy depends on climate-sensitive sectors such as agriculture, water, tourism, energy and health.
For farmers, changing rainfall can disrupt planting and harvests.
For businesses, floods and droughts can disrupt supply chains and increase operating costs.
For governments, climate shocks can force money away from planned development towards emergency response and repairs.
So when we talk about climate overshoot, we are also talking about food, jobs, water, infrastructure and the cost of living.
Global Warming Overshoot: Why It Matters to Kenya
Africa Cannot Afford a Long Overshoot
Africa has contributed a relatively small share of global greenhouse gas emissions, yet many African countries face serious climate risks with fewer resources to respond.
Kenya’s own data puts its share of global greenhouse gas emissions at less than 0.1%, while its emissions per person remain well below the global average.
This makes climate action an issue of both science and fairness.
African countries need to build resilience while continuing to grow their economies. They also need access to finance and technology to make that transition possible.
What Happens Now?
There are three priorities.
First, cut emissions.
The world must move faster towards cleaner energy, transport, industry, agriculture and waste management.
Second, adapt.
Kenya must continue investing in early-warning systems, water security, climate-smart agriculture and resilient roads and infrastructure.
Third, finance the transition.
Kenya estimates it will need about US$56 billion between 2031 and 2035 to implement its climate plans. Around 19% is expected to come from domestic resources, while about 81% will require international support.
Climate finance is therefore not a side conversation.
It is central to whether vulnerable communities can prepare, adapt and recover.
Overshoot Is a Warning, Not a Surrender
Crossing 1.5°C does not mean the world has failed and climate action no longer matters.
It means the margin for error is becoming smaller.
A lower peak is safer than a higher one. A shorter period of overshoot is better than a longer one.
And preparing a community before a drought, flood or heatwave is better than waiting to rebuild afterwards.
That is the message Kenya and the rest of Africa should take from the overshoot debate:
We may be approaching a warmer world, but how warm it becomes is still partly in our hands.
The goal now is simple: keep the overshoot as low as possible, keep it as short as possible, protect people from the impacts and keep working towards bringing temperatures back down.
Climate change may be global.
But the consequences are local and they are already here.
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