September · Mexico
Best time to visit Mazatlán in September Weather, crowds & prices
Weather in Mazatlán in September
Average temperature 29°C, 158 mm of rain, about 25 days with 6+ hours of sunshine and 79% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
7.0/10
Ranked #11 of 12 months
- Avg temp
- 29°C
- Rainfall
- 158 mm
- Humidity
- 79%
- Days with 6h+ sun
- 25
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Mazatlán scores 7.0/10 for beach and coastal travel - ranked #11 of 12. Expect around 29°C, 158 mm of rain, and roughly 25 days with 6+ hours of sunshine this month.
Mazatlán pairs a long Malecón with a revived centro histórico-Pacific sunsets and island boat days. Best window: the drier months outside peak monsoon.
September in Mazatlán: strong conditions, 11th of 12
September averages 29°C (85°F) and humidity near 79%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
Monthly rainfall reaches 158 mm — wet for this destination — but about 25 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 7/10 here, 11th of 12 months, against 10/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Plan for low-season pricing, with crowds are light for this destination.
Flexible dates? April scores 3 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Mazatlán in September?
- In September, Mazatlán averages 29°C, 158 mm of rain, and about 25 days with 6+ hours of sunshine. Its climate-comfort score is 7.0/10.
- Is September a good time to visit Mazatlán?
- September earns a 7.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Mazatlán in September?
- Expect about 158 mm of rain in September. Average humidity is 79% and there are about 25 days with 6+ hours of sunshine.
Curated in Mazatlán
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Mazatlán, Mexico. Live activities and tours from GetYourGuide, matched to this destination.