Meteorologists forecast that the autumn season in Campinas, which began on Friday, October 20, 2026, will deviate from the seasonal norms by featuring above-average temperatures and sporadic rainfall. Traditionally a transitional period leading into winter, this autumn is expected to begin with an unusual pattern of prolonged rainy spells, even as residents generally anticipate a tapering of rain during this time of year. Early April may witness significant rain events ahead of the usual rainy season.

The expectation for a delay in colder weather is notable, with experts indicating that chilly conditions will likely only set in towards the end of the autumn season, possibly around May or June. This pattern of late arrival for cold fronts is unusual but can be attributed to the general effects of climate phenomena such as El Niño, which can disrupt typical weather patterns and lead to warmer outcomes.

Overall, these predictions highlight a shift in the typical climate behavior for the region, with implications for agricultural cycles, local ecosystems, and daily life in Campinas. Residents and businesses may need to adapt to the extended warm conditions while preparing for the potential influx of rainfall that promises to change the seasonal landscape significantly.