In general, there are two main seasons in Riviera Nayarit. The rainy season runs from May through mid-October. The dry season runs from mid-October through April. During the rainy season, guests can expect frequent heavy rain showers on most days, with showers typically in the late afternoon and lasting only a few hours. If you are visiting during the summer, afternoon showers cool down this 200-mile Pacific coastline, giving travelers a break from average temperatures in the 90's.
The best time of year to visit Puerto Vallarta and the Riviera Nayarit is between April and June when the weather is pleasant. During these months, the rain is scarce and there are fewer tourists and crowds. If you're interested in whale watching trips, the best time to see these amazing creatures is from January to March.