INETER predicts winter to start at the end of May
The first heavy rains are expected at the end of April, but the formal rainy season would begin around May 20, with June being the month with the highest accumulated rainfall.

TL;DR
- The rainy season in Nicaragua is predicted to start at the end of May 2026.
- First strong rains are expected by the end of April.
- June will likely have the highest rainfall.
- Rain distribution will not be uniform, with more rain on the Caribbean Coast and less in the Central region.
- There is a 90% probability of neutral climate conditions, meaning no El Niño or La Niña phenomena are expected.
- Temperatures in Managua are predicted up to 37 degrees Celsius, 39 in the west, and 34-36 degrees in the rest of the country, accompanied by initial showers.