The best climate of the world results in spectacular weather averages all year long. Lets start with the less obvious in this Gran Canaria Wiki: the summer. Temperatures rise in summer in the Canary Islands like anywhere else. However the constant winds coming from the north refresh the islands and keep the temperatures around 25ºC and 30ºC. Even though temperatures can rise, in general and for the biggest part of the summer they stay in this range. Way below the heat waves that cover Europe in this period.
The temperatures stay high in the months of September, October and November. A dream come true to be swimming with over 25ºC in November.
In the period between December and February temperatures fall. However normally not below 17ºC-18ºC. During this winter period there is an alternance of hotter days with 25ºC and colder days with 18ºC. In general winters in the islands have two-year cycles. There are years where you don't even feel the winter, and other colder years with temperatures going down to 15ºC-16ºC. All in all, the best weather you can imagine in Europe.
In spring we go back to our usual temperature of 20ºC to 25ºC. Going to the beach, hiking, running, working... all with the perfect temperature any time of the year. Check Gran Canaria weather averages for each month in this Gran Canaria Wiki.