Atliaca, Mexico — Weather in September 2026

Climate Overview

Atliaca, Mexico in September has warm conditions, with highs averaging 26.8°C (80°F). Rain falls on about 27 days this month, totalling around 302 mm.

This month falls at the beginning of Autumn.

Temperatures remain fairly steady throughout September, with daily highs around 27°C (81°F).

September sees fairly even rainfall, totalling about 303 mm across the month.

Expect around 9.7h of sunshine at the start of September, decreasing to 8.5h by the end.

The warmest days tend to fall around the 8th, averaging 27.1°C (81°F).

Monthly September Averages

Temperature

27°C / 19°C

Feels Like

31°C / 22°C

Rain

27 days · 302 mm

Sunshine

9.3h / day

Humidity

83% — Very Humid

Wind

8 km/h

Wind Direction

SSW (195°)

Gusts

28 km/h

Daylight

12.2 h

Cloud Cover

83%

Clear Sky Days

UV Index

8.1 — Very High

Dew Point

20°C — Humid

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

High Low

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:26

Daylight 12.2h

Sunset 18:39

What to Expect

Daytime temperatures around 27°C (80°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

2days (9 mm) Excellent

1days (6 mm) Excellent

1days (8 mm) Excellent

2days (11 mm) Excellent

2days (5 mm) Excellent

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January best	28°C / 16°C	28°C / 16°C	2days (9 mm) Excellent	10.2h Excellent	61% Muggy	6.8 High	Excellent	View Details
February best	30°C / 16°C	30°C / 17°C	1days (6 mm) Excellent	10.6h Excellent	56% Moderate	7.9 Very High	Excellent	View Details
March best	31°C / 17°C	33°C / 18°C	1days (8 mm) Excellent	11.1h Excellent	52% Moderate	9.1 Very High	Excellent	View Details
April	33°C / 18°C	34°C / 19°C	2days (11 mm) Excellent	11.6h Excellent	50% Moderate	9.5 Very High	Good	View Details
May	32°C / 20°C	35°C / 22°C	10days (49 mm) Wet	11.6h Excellent	60% Moderate	9.1 Very High	Good	View Details
June	28°C / 20°C	32°C / 22°C	24days (210 mm) Wet	10.2h Excellent	76% Humid	8.3 Very High	Wet	View Details
July	28°C / 19°C	32°C / 22°C	27days (223 mm) Wet	10.6h Excellent	79% Humid	8.4 Very High	Wet	View Details
August	28°C / 19°C	32°C / 22°C	28days (262 mm) Wet	10.1h Excellent	80% Humid	8.6 Very High	Wet	View Details
September	27°C / 19°C	31°C / 22°C	27days (302 mm) Wet	9.3h Good	83% Humid	8.1 Very High	Wet	View Details
October	27°C / 19°C	30°C / 21°C	17days (135 mm) Wet	9.9h Good	78% Humid	7.7 Very High	Good	View Details
November best	28°C / 18°C	29°C / 19°C	4days (28 mm) Good	10.3h Excellent	70% Muggy	7.1 Very High	Excellent	View Details
December best	27°C / 16°C	28°C / 17°C	2days (5 mm) Excellent	10.1h Excellent	64% Muggy	6.4 High	Excellent	View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketWaterproof shoesBreathable clothingSunscreen (SPF 30+)Sun hatSunglasses

Frequently Asked Questions

Expand all

Is September a good time to visit Atliaca?

September is typically wet for visiting Atliaca, with average highs of 27°C (80°F) and around 27 rainy days. Atliaca, Mexico in September has warm conditions, with highs averaging 26.8°C (80°F). Rain falls on about 27 days this m

Does it rain a lot in Atliaca in September?

Atliaca typically sees around 27 rainy days in September with 302 mm (11.9 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Atliaca in September?

Nights stay pleasantly warm in Atliaca during September, around 19°C (66°F). Light evening wear is sufficient.

What should I pack for Atliaca in September?

With highs of 27°C (80°F) and lows of 19°C (66°F) in September, we recommend: Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). Comfortable walking shoes are essential.

Is September among the best months weather-wise in Atliaca?

September is not the most favourable month weather-wise in Atliaca. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Atliaca in September?

The average UV index in Atliaca during September is 8 (very high). Strong sun protection is essential — SPF 50+, protective clothing, and avoid prolonged outdoor exposure during peak hours.

How many hours of daylight are there in Atliaca in September?

Atliaca gets approximately 12 hours of daylight per day in September, with around 9 hours of sunshine.

Does it snow in Atliaca in September?

Snow is uncommon in Atliaca during September based on 10-year climate averages.

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