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Is the weather good in Mexico in September 2026?
OK Weather
🌧️
RainyFor the past few decades, the average daily temperatures in Mexico during September have been around +29°C.
The weather differs across the Mexico in September. You may encounter maximum temperatures of +29°C at noon in Merida and +22°C in Mexico City. So plan your activities, and packing, based on the individual locations rather than the country as a whole.
Temperature, wind and humidity in September
Average
Acapulco
Cozumel
Guadalajara
Mexico City
Monterrey
Puerto Escondido
Puerto Vallarta
San Jose del Cabo
Merida
Cancun
☀️
+29°C
Avg. max. temperature
+3°C
Min.
+40°C
Max.
234 mm
Total precipitation
79%
Avg. humidity
2 m/s
Avg. wind
2 ☀️
Sunny Days
3 ⛅️
Cloudy
23 🌦
Rainy
Our opinion: Mexico has OK weather in September.
Mexico in September – what city is the…
- rainiest? Puerto Escondido, with an average of 18 mm of rain and humidity of 83%;
- warmest? Merida, with daytime temperatures averaging +33°C;
- windiest? Cozumel, with an average of 3 m/s;
- coolest? Mexico City, with daytime temperatures averaging +22°C;
How good is the weather in Mexico in September?
During September, the Mexico is characterized by variable weather with air pressure around 1013 HPa and therefore elements of sun, rain, and wind – with a little extra emphasis on the latter two. The humidity in September ranges between 68% in Mexico City and 86% in Puerto Vallarta.
How warm is it in Mexico during September?
Variable weather with sun, rain and wind: +29°C in average daily temperature.
This is how hot it usually is in September
The average daily temperatures above don't tell you everything about how hot it can be in Mexico. For example, cold nights can make a big difference for those staying in tents or unheated houses. Extra hot days, on the other hand, can make a big difference for those who plan to engage in demanding physical training or competition. So here are some more temperatures for September:
Average
Acapulco
Cozumel
Guadalajara
Mexico City
Monterrey
Puerto Escondido
Puerto Vallarta
San Jose del Cabo
Merida
Cancun
- Average maximum temperature for the month: +29°C;
- Average minimum temperature for the month: +23°C;
- Highest monthly temperature: +30°C;
- Lowest monthly temperature: +22°C;
Monthly temperatures:
Average
Acapulco
Cozumel
Guadalajara
Mexico City
Monterrey
Puerto Escondido
Puerto Vallarta
San Jose del Cabo
Merida
Cancun
- Warmest: May with an average +31°C during the day;
- Coldest: January with an average +26°C of the day;
- Hottest month in hottest city: May in Merida;
- Coldest month in coolest city: January in Mexico City;
Can you swim in Mexico in September?
Here are the minimum and maximum water temperatures in cities in Mexico in September:
Cancun
🔥
Very warm28°C - 30°C
You can definitely swim in Cancun in September, with the water temperature of +28°C and up.
Winds in Mexico during September
Wind speed in Mexico in September based on historical data:
Average
Acapulco
Cozumel
Guadalajara
Mexico City
Monterrey
Puerto Escondido
Puerto Vallarta
San Jose del Cabo
Merida
Cancun
September tends to offer light winds averaging 2 m/s. However, coastal cities may experience breezes during the mornings and afternoons.
Comparison between cities in September:
- Highest average wind speed: Cozumel with 4 m/s;
- Lowest average wind speed: Guadalajara with 1 m/s;
- Windiest day of the month: Cozumel with 4 m/s;
- The least windy day of the month: Acapulco with 1 m/s;
Humidity and precipitation in Mexico in September
Amount of rainfall in mm during September in Mexico based on historical data:
Average
Acapulco
Cozumel
Guadalajara
Mexico City
Monterrey
Puerto Escondido
Puerto Vallarta
San Jose del Cabo
Merida
Cancun
September tends to be an extremely humid month with 72% humidity and 90 mm rainfall. In general the humidity tends to be a little lower in mountainous regions and more humid closer to water.
Comparison between cities in September:
Average
Acapulco
Cozumel
Guadalajara
Mexico City
Monterrey
Puerto Escondido
Puerto Vallarta
San Jose del Cabo
Merida
Cancun
- Highest average rainfall: Puerto Escondido with 544 mm;
- Lowest average rainfall: San Jose del Cabo with 133 mm;
- Most number of rainy days: Puerto Escondido with 28 rainy days;
- Least number of rainy days: Monterrey with 16 rainy days;
- Highest risk of rain during the day: Puerto Escondido with 93%;
- Least risk of rain during the day: Monterrey with 53%;
- Highest average humidity: Puerto Vallarta with 86%;
- Lowest average humidity: Mexico City with 68%;
Tips for traveling to Mexico in September
Looking for some tips for traveling to the sun, snow, or whatever you're aiming for Mexico? Activities, weather, and clothing are closely linked. In addition, it's important to pack only what you really need so you don't have to worry about heavy packing or paying extra baggage fees.
Here is some advice on what to pack and what kind of activities you can do in the Mexico based on the weather that September is expected to bring. The advice applies to the country as a whole – local weather and possible activities may differ somewhat.
rainy, warm weather with light winds and very high humidity in September
Pack right for September
The weather makes a difference when it comes to packing - especially which items should go in your suitcase. The tips below are designed to help you pack light and right without carrying more than necessary.
- For light showers, an umbrella or a thin and light rain cape is usually sufficient, while more rain may require rainwear and rain boots.
- Warm - neither hot nor cool, are probably the most comfortable when you think of sunbathing. Shorts, shorter skirts or dresses, tank tops and t-shirts are the basics here. If you're going to a seaside resort, don't forget your swimwear and maybe even a snorkel, mask and flippers.
- Light winds are probably most comfortable in hot weather but is cooling in cool and cold weather. If it is hot (when the air temperature is about 30 degrees), the wind can have a warming effect. A thin, windproof jacket and long trousers help to counteract these effects.
- High humidity means that the air conducts heat to and from the skin more easily. For example, if the air is hot (above skin temperature), it will be harder to stay cool. On the other hand, if the air is cool or cold, it is more difficult to stay warm. In high humidity, the choice of clothing makes less of a difference. However, your physical activity plays a bigger role.
FAQ
Frequently asked questions about the weather in Mexico in September:
What can you do outside when it's warm in Mexico?
Bathing and sunbathing can be suitable. Warm (but not hot) days are also good for activities that are not so physically demanding: sightseeing on foot, by boat, on a scooter, camel riding. You can also exercise easily as long as you make sure to cool down and quench thirst.
Is September a good time to visit Mexico?
It’s always a good time to visit Mexico, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Monthly weather in Mexico
Source of the data
For this page, we’ve looked at the typical weather in Mexico, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
