Berkeley Earth have just released a powerful new tool called Synthesis by Berkeley Earth which they describe as

a new city-level climate intelligence platform combining our high-resolution observational record with forward-looking warming projections for more than 8,000 locations worldwide

Fortunately for us on the Garden Route they cover Knysna, Oudtshoorn, Mossel Bay and Plettenberg Bay (but no George, which is interesting.)

Let's take a look at Knysna's data because it tells a rather alarming story:

The data demands attention

In 2025, Knysna’s climate story is one of rapid change and some unsettling surprises. According to Berkeley Earth’s data, the town’s 20-year average temperature already reached 17.79°C in 2025, a temperature that was not expected until 2030. Just a few years ago, projections suggested that Knysna’s 20-year average would rise from 16.16°C to 17.75°C by the end of the decade. Yet, in 2025, with the 20-year average already at 17.79°C, the annual temperature for the year hit 18.04°C.

This means Knysna has not only met but exceeded its 2030 temperature projection five years ahead of schedule.

The SSP3-7.0 scenario, a high-emissions pathway used by climate scientists, projected Knysna’s temperature to be 17.62°C in 2025 (observed 20-year average 17.92ºC). The reality is stark: actual temperatures are already higher than this high-emission scenario estimate.

This is a wake-up call, signaling that local warming is accelerating faster than even the most pessimistic models anticipated.

What does a warmer Knysna actually mean

An increase of 1.6°C in the long-term average may not sound particularly dramatic. After all, temperatures often change by more than that between sunrise and lunchtime, for example today July 1, 2026 the temperatures ranges between 9ºC (min) and 15ºC (max) a 6ºC difference. Climate change, however, is not about the weather on any particular day. It is about shifting the baseline from which all weather occurs.

A warmer atmosphere can hold more moisture, increasing the potential for intense rainfall when storms develop. Higher temperatures also increase evaporation from soils, rivers and dams, making dry periods more severe. During hot, dry and windy conditions, vegetation dries out more quickly, increasing the likelihood that wildfires become more intense and spread more rapidly.

A temperature rise of this magnitude is not just a statistical anomaly, it has real, tangible consequences for the environment.

Ecosystems that have evolved over millennia to thrive in Knysna’s mild climate are now facing unprecedented stress. Species that cannot adapt or migrate quickly enough will likely decline or disappear, disrupting food chains and reducing biodiversity. For a region known for its rich natural heritage, including the Knysna estuary and its unique surrounding coastal forests, this is a direct threat to ecological stability.

Human health is another critical area of concern. These rising temperatures increase the risk of heat-related illnesses, particularly for vulnerable populations such as the elderly and outdoor workers. Additionally we know, as is being witnessed elsewhere, that warmer conditions can expand the range of disease-carrying insects, (eg. mosquitoes) potentially introducing new health risks to the region.

The broader implications

Knysna’s situation is a microcosm of a global trend: climate change is happening faster than predicted. While the global average temperature (land & ocean) is now at about 1.5ºC above the preindustrial average, local realities, like the one in Knysna, often outpace the global temperature averages.

The fact that Knysna’s temperatures are already surpassing projections underscores the urgency of both mitigation (reducing greenhouse gas emissions wherever possible) and adaptation (preparing for the inevitable changes). The data is a clear signal that "business as usual" is no longer an option. Local governments, businesses, and communities must come together to address this challenge head-on. This means investing in climate-resilient infrastructure, promoting sustainable land use practices, and supporting research and monitoring to better understand and respond to local climate trends.

For individuals, the message is equally urgent. Reducing personal carbon footprints, supporting local sustainability initiatives, and advocating for stronger climate policies can all contribute to a collective effort to slow the rate of change. The time to act is now before the gap between projections and reality widens even further.

We have the solutions we just need to implement them and if we don't well then the results of not doing so are on us.

The Berkeley Earth projection graph above is based on one possible emissions scenario known as SSP3-7.0. This projection should not be interpreted as a prediction of exactly what will happen. Instead, it illustrates how temperatures could evolve if greenhouse gas emissions remain relatively high throughout this century. We have lower emissions pathways available to us, but we must actively choose them!

As a result of all the above, it is clear that we are committed to a certain level of heating, to which we need to adapt. What do we need to do? My suggestion is everyone should read and take this document seriously. The adaptation research has been done. We now urgently need to implement the suggestions.