The weather in Spain is a  madness. ('madness' sounds poetic here, or you could go with 'crazy' as Jared suggests)

We are in Autumn, a season with of cold and rains, where normally we need to change our summer clothes for warmer clothes. But this year the weather is crazy. It is now the middle of November and we continue with high temperatures.  On some days we can even some days we can go to the beach and take a swim. Little by little the cold season is arriving but very slowly way. I don´t know if this is from climate change, but there are many possibilites is a strong possibility that I'll catch a cold. ;)

As in Spanish, it sounds better not to repeat the same word several times in a row.  Thus, "change our summer clothes for warm clothes" might sound better as "change our summer attire for warmer clothes"

The weather in Spain is crazya madness. (I usually only hear 'madness' used when it is something caused by people- like, 'this war is madness' or 'the traffic is madness.' It is possible however that English speakers in other countries might use 'madness' to describe weather, I'm not sure.)

We are in Autumn, the season with cold and rains, where normally we need to change our summer clothes for warm clothes. But this year the weather is crazy. It is now the middle of November and we continue are still continuing with high temperatures. even some days we can Some days we can even go to the beach and take a swim. Little by little the cold season is arriving, but very slowly. way. I don´t know if this is from due to climate change, but there are many possibilites (there is a possibility/it is possible) that I (will/might) catch a cold. ;)