Mexico
Mazatlán in September: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Mazatlán in September is climatically mixed. The average daily high is around 29 °C, and the sea is about 30 °C. With about 23 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
53/100 · #10
Warmth
#8
Dryness
#10
Sun
#7
Sea warmth
#2
Published best categories: none
Mazatlán · SeptemberPhoto: Shane Smith · CC BY-SA 3.0Climate facts
- Average high
- 29 °C
- Average low
- 23 °C
- Sea
- 30 °C
- Rainy days (est.)
- 23 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 84 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| August | 30 | 24 | 27 | 217 | 7.3 | 83 | 1.3 | 30 | 51 |
| September (selected) | 29 | 23 | 23 | 184 | 6.8 | 84 | 1.2 | 30 | 53 |
| October | 30 | 22 | 8 | 80 | 6.7 | 75 | 1.2 | 30 | 74 |
How do the previous and next months compare?
Baseline: September (53/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| August | -2 | +0.6 °C | +0.5 °C | +4.2 | +32.7 mm | +0.5 h | -1.5 % | ±0 m/s | +0.1 °C |
| October | +21 | +0.5 °C | -1.7 °C | -14.8 | -103.7 mm | -0.1 h | -9.8 % | ±0 m/s | -0.3 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Mazatlán in September?
The average daily high is around 29 °C, with an average daily low of about 23 °C.
Can you swim in Mazatlán in September?
The sea is about 30 °C (very warm).
Does it rain a lot in Mazatlán in September?
The curated estimate is about 23 rainy days per month, not a directly measured long-term average. Total precipitation averages around 184 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Mazatlán?
By the climate score, January, February, November and December are the strongest months for Mazatlán. For a beach trip: January, February, November and December. September is not among them.