October weather forecast
Cancún, Mexico

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White sandy beach and the clear blue waters in Cancún, Mexico
White sandy beach and the clear blue waters in Cancún, Mexico

Weather in October

The weather in October brings a continuation of the downscaling trend in terms of temperatures while retaining relatively high humidity levels. October is the wettest month of the year, often seeing concurrent spells of rain showers, making it a potentially unfavorable option for outdoor-focused tourists. Despite the increased humidity, temperatures remain largely consistent with those of September. Cancún in October sees a maximum temperature of 29.4°C (84.9°F), a minimum of 25.5°C (77.9°F), along with the highest annual rainfall quantity of 137mm (5.39") covering nearly 23.3 days. As the city hovers between seasons, it's critical for potential visitors to keep track of ongoing weather conditions before confirming their plans.

Temperature

The onset of October in Cancún notes an average high-temperature of a warm 29.4°C (84.9°F), subtly shifted from September's 30.3°C (86.5°F). In October, Cancún's nights cool slightly to a consistent average temperature of 25.5°C (77.9°F).

Heat index

For most parts of October, the heat index is appraised at a fiery hot 35°C (95°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In October, the average relative humidity in Cancún is 77%.

Rainfall

The month with the most rainfall is October, when the rain falls for 23.3 days and typically aggregates up to 137mm (5.39") of precipitation.

Sea temperature

In October, the average sea temperature in Cancún is 28.6°C (83.5°F).
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is seen as very warm and delightful by everyone. During these temperatures, water activities become enjoyable, without causing discomfort for extended periods.

Daylight

The average length of the day in October is 11h and 39min.
On the first day of the month, sunrise is at 6:38 am and sunset at 6:34 pm. On the last day of October, sunrise is at 6:50 am and sunset at 6:11 pm EST.

Sunshine

The average sunshine in October in Cancún is 8.5h.

UV index

The months with the highest UV index are March through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 7 during October translates into these guidelines:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.

Frequently asked questions

How hot does it get in Cancún in October?

October temperatures in Cancún, Mexico, vary between a high-temperature of 29.4°C (84.9°F) and a low-temperature of 25.5°C (77.9°F). In October, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is appraised at 35°C (95°F).

What is the average humidity in October in Cancún?

In Cancún, the average relative humidity in October is 77%.

What is the wettest month in Cancún?

The month with the most rainfall in Cancún is October, when the rain falls for 23.3 days and typically aggregates up to 137mm (5.39") of precipitation.

How many days does it rain in October in Cancún?

In Cancún, Mexico, during October, the rain falls for 23.3 days and regularly aggregates up to 137mm (5.39") of precipitation.

How warm is the water in October in Cancún?

In October, the average sea temperature in Cancún is 28.6°C (83.5°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in October in Cancún?

In October, the average day length in Cancún, Mexico, is 11h and 39min.

What time are sunrise and sunset in October in Cancún?

In October, on the first day of the month, sunrise is at 6:38 am and sunset at 6:34 pm. On the last day of the month, in Cancún, sunrise is at 6:50 am and sunset at 6:11 pm EST.

How long on average sun shines in October in Cancún?

The average sunshine duration in October is 8.5h.

What is the month with the highest UV index in Cancún?

March through October, with an average maximum UV index of 7, are months with the highest UV index.

How high is the UV index in October in Cancún?

In Cancún, Mexico, the average daily maximum UV index in October is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.

Average temperature in October
Cancún, Mexico

Average temperature in October - Cancún, Mexico
  • Average high temperature in October: 29.4°C

The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (26°C).

  • Average low temperature in October: 25.5°C

The month with the highest average low temperature is August (27°C).
The coldest month (with the lowest average low temperature) is January (22.1°C).

Average pressure in October
Cancún, Mexico

Average pressure in October - Cancún, Mexico
  • Average pressure in October: 1012.6mbar

The month with the highest atmospheric pressure is January (1017.7mbar).
The month with the lowest atmospheric pressure is September (1012.5mbar).

Average wind speed in October
Cancún, Mexico

Average wind speed in October - Cancún, Mexico
  • Average wind speed in October: 15.1km/h

The windiest month (with the highest average wind speed) is March (18.8km/h).
The calmest month (with the lowest average wind speed) is July (13.1km/h).

Average humidity in October
Cancún, Mexico

Average humidity in October - Cancún, Mexico
  • Average humidity in October: 77%

The month with the highest relative humidity is June (78%).
The month with the lowest relative humidity is March (73%).

Average rainfall in October
Cancún, Mexico

Average rainfall in October - Cancún, Mexico
  • Average rainfall in October: 137mm

The wettest month (with the highest rainfall) is October (137mm).
The driest month (with the least rainfall) is March (26mm).

Average rainfall days in October
Cancún, Mexico

Average rainfall days in October - Cancún, Mexico
  • Average rainfall days in October: 23.3 days

The month with the highest number of rainy days is October (23.3 days).
The month with the least rainy days is April (12.3 days).

Average sea temperature in October
Cancún, Mexico

Average sea temperature in October - Cancún, Mexico
  • Average sea temperature in October: 28.6°C

The best month for swimming (with the highest average sea temperature) is August (29.4°C).
The coldest month (with the lowest average sea temperature) is January (25.6°C).

Average daylight in October /
Average sunshine in October
Cancún, Mexico

Average daylight in October / Average sunshine in October - Cancún, Mexico
  • Average daylight in October: 11h and 4min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

  • Average sunshine in October: 8h and 3min

The months with the most sunshine are July and August (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 7h and 42min).

Average sunshine days in October
Cancún, Mexico

Average sunshine days in October - Cancún, Mexico
  • Average sunshine days in October: 4.9 days

The month with the most sunshine days is April (11.7 days).
The month with the least sunshine days is December (4.6 days).

Average UV index in October
Cancún, Mexico

Average UV index in October - Cancún, Mexico
  • Average UV index in October: 7

The months with the highest UV index are March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 6).

Average cloud cover in October
Cancún, Mexico

Average cloud cover in October - Cancún, Mexico
  • Average cloud cover in October: 35

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 23).

Average visibility in October
Cancún, Mexico

Average visibility in October - Cancún, Mexico
  • Average visibility in October: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

Cancún, Mexico

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