Yes. But then you must look at what might be the cause of climate change.
Although many scientists believe humans are the major contributor to climate change, the media reports this, and politicians use it as their campaign platforms. There are also just as many scientists who see it as a natural, cyclical process that will happen with or without us based on historical information.
I actually did a research paper on this early in my college experience that shows that humans only add about ~5% of the total carbon to the environment via various emissions. The other ~95% is emitted naturally. While not all of the carbon is recaptured by nature every year, it can and does contribute to climate change, humans aren't the major contributor. The carbon cycle also fluctuates by ~10-15% annually. Some years is produces more than it absorbs, other it absorbs more than it produces. It will happen without our extra input.
Looking at stats for today, average land global temperatures today are ~ 57°F (14°C), average ocean temperatures are 68°F (20°C). These are average global temps, your local conditions will vary. Back around the height of the dinosaurs, global temperatures averaged ~75°F (~24°C), and the oceans averaged ~95°F (~35°C), the ocean levels were higher, and the polar ice caps were nonexistent, all without a single human present. There are times it was even warmer before and after the big meteor. Granted, no one was there to record and document these stats, they are estimated based on decades of accepted scientific research.
Even in the last 400,000 years, with very few critters that could be considered human, there have been quite a few fluctuations in global temperatures, causing alternating ice ages and warmer periods. Still "climate change", just not the doom and gloom that is being forced down your throat daily from all angles.
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Many of the same scientists who predicted disastrous global warming (in the 90's) also predicted (in the 70's, based on only 14 years of data) a new ice age coming within the next century due to global cooling. They eventually figured out that aerosol CFC's (chlorofluorocarbons) were causing the cooling and quickly remedied their emissions. They then switched to predictions of massive warming, with some of them claiming massively rising sea levels by the early 2000's and the ice caps having a 75% chance of being gone by the mid 20-teens (dodged a bullet there). When none of that ever came about, they changed their platform to "climate change". Can't really fight that one, because every change affects the climate. My dog chewing up a plastic toy and pooping plastic pieces in my yard may block a seed from germinating in that exact spot. Now that plant that could have served as a waystation for a endangered bug will never grow, and that bug may go extinct. Not to mention the pounds of carbon that that plant would absorb over the next decade. It's all "climate change", but now it's too broad of a definition. You really can't dispute that the climate is changing, it always has and always will.
Climate change scientists predict that we will be at the same average temperature in the year 2100 as it was 50 million years ago, but that is based on computer simulations, not hard scientific data, there is a difference. The estimates of conditions millions of years ago are based on data that has been proven to be accurate time and time again, with much less than a percentage point margin of error. While the predictions of future conditions are based on computer simulations, anyone who knows anything about computers knows that they do what they are told. Essentially, you input a, b, and c, and the computer will output x, y, and z based on those figures and the progession you tell it to take. You can try to program the variations in the carbon cycle with the variations in human emitted carbon, but you won't have a high degree of accuracy much further than a few years out. To say that the average summertime temperature in Columbia will be 101.5°F in the year 2100 (very possible) is not much is a stretch as the average summertime temperature is 97°F today, with some areas already hitting 105°F on average. However, 80 years from now, there will not likely be anyone around to record whether it's right or wrong.
Without knowing where in Greece you live, 28°C might not be unheard of. Looking at data for Greece, I've seen records of as high as 38°C and as low as 4°C in October for Athens; a difference of 34°C (93°F). Climate change? Or the cyclical process of how the natural world just is?