In short
- Best months: November to May for clear, calm water.
- Best time of day: 08:00 to 11:00 AM.
- Wildlife viewing peaks in the dry season and early mornings.
In this article
Puerto Vallarta's tropical climate dictates the best conditions at Los Arcos National Marine Park. While tours depart daily, the dry season offers the most reliable water visibility for snorkeling and scuba diving.
What is the best time of year to visit Los Arcos?
The best months to visit are November through May.
During these months, the waters in Banderas Bay are calmest. This provides the best visibility for spotting tropical fish and marine life. The dry season limits rain runoff, which keeps the water clearer than in the summer months.
What is the best time of day to go?
Plan to arrive between 08:00 AM and 11:00 AM.
Early mornings offer the calmest ocean conditions. Wind and waves typically pick up in the afternoon. This reduces visibility and makes swimming more difficult.
Arriving early also helps you avoid the largest tour groups that arrive later in the day.
When can I see sea turtles and manta rays?
You have the highest chance of seeing sea turtles in the early morning near Roca de la Tortuga.
Marine life is active year-round, but November to May brings peak visibility. Manta rays and tropical fish are easier to spot when the water is clear.
Seabirds, including pelicans and blue-footed boobies, nest on the cliffs and can be seen throughout the day.
Can I visit during the summer months?
Yes, Los Arcos is accessible year-round.
June through October is the rainy season in Puerto Vallarta. While you can still take boat tours, the water visibility is often lower due to rain runoff.
However, the water temperature is warmer, and the park is generally less crowded.
Do tour times change during the year?
Most guided tours operate on the same schedule year-round.
Snorkeling and diving boats from the Puerto Vallarta Marina and Los Muertos Pier depart daily. If you hire a private water taxi from Mismaloya, you control your departure time.
Always aim for an 08:00 AM start, regardless of the month you visit.
Questions travellers ask
How early can I hire a water taxi to Los Arcos?
Water taxis from Mismaloya beach are usually available from early morning. Arriving by 08:00 AM secures calm water and good visibility.
Is it safe to snorkel in the afternoon?
Yes, but the ocean often gets choppy. Afternoon winds decrease water clarity, making the morning hours a much better choice.
Does the rainy season close the marine park?
No, the park remains open. Tours only cancel during severe weather. Expect lower visibility if it rained heavily the night before.
