Canada La Nina Winter 2025. For the upcoming winter season, la niña conditions are growing and are favored to emerge during the late fall. The transition from el niño to la niña is expected to lead to cooler temperatures during the final months of 2025, especially across the prairies, and a change in the jet stream.

Environment canada’s senior weather climatologist says ottawa will see more of a winter than last year, as it experiences a possible la nina weather event this year. For the upcoming winter season, la niña conditions are growing and are favored to emerge during the late fall.