September weather forecast
Akumal, Mexico

Weather in September

The first month of the autumn, September, is also a hot month in Akumal, Mexico, with an average temperature ranging between max 31.3°C (88.3°F) and min 25.8°C (78.4°F).

Temperature

In Akumal, the average high-temperature in September is almost the same as in August - a still tropical 31.3°C (88.3°F). The average low-temperature, in Akumal, is 25.8°C (78.4°F).

Heat index

In September, the average heat index is evaluated at a blistering 42°C (107.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, pregnancy, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In September, the average relative humidity is 79%.

Rainfall

In September, in Akumal, the rain falls for 23.5 days. Throughout September, 110mm (4.33") of precipitation is accumulated. In Akumal, during the entire year, the rain falls for 211.1 days and collects up to 823mm (32.4") of precipitation.

Sea temperature

August through October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Akumal, Mexico.
Note: 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.

Daylight

In Akumal, the average length of the day in September is 12h and 15min.
On the first day of September, sunrise is at 6:33 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:38 pm EST.

Sunshine

In Akumal, the average sunshine in September is 8.8h.

UV index

March through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in September in Akumal?

The average high-temperature, in September, in Akumal, is 31.3°C (88.3°F), while the average low-temperature is 25.8°C (78.4°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is evaluated at 42°C (107.6°F).

What is the average humidity in September in Akumal?

The average relative humidity in September is 79%.

How much does it rain in Akumal in September?

In Akumal, Mexico, in September, during 23.5 rainfall days, 110mm (4.33") of precipitation is typically accumulated.

When is the sea warmest in Akumal?

August through October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Akumal.

What is the sea water temperature in September in Akumal?

In September, the average sea temperature is 29°C (84.2°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Akumal have in September?

In September, the average day length in Akumal is 12h and 15min.

When are sunrise and sunset in September in Akumal?

On the first day of September, sunrise is at 6:33 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:38 pm EST.

How many hours of sunshine does Akumal have in September?

In Akumal, Mexico, the average sunshine duration in September is 8.8h.

What are the months with the highest UV index in Akumal?

March through September, with an average maximum UV index of 7, are months with the highest UV index in Akumal, Mexico.

What is the UV index intensity in September in Akumal?

In Akumal, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.

Average temperature in September
Akumal, Mexico

Average temperature in September - Akumal, Mexico
  • Average high temperature in September: 31.3°C

The warmest month (with the highest average high temperature) is August (31.8°C).
The month with the lowest average high temperature is January (26.7°C).

  • Average low temperature in September: 25.8°C

The month with the highest average low temperature is August (26°C).
The coldest month (with the lowest average low temperature) is January (20.8°C).

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Average pressure in September
Akumal, Mexico

Average pressure in September - Akumal, Mexico
  • Average pressure in September: 1012.3mbar

The month with the highest atmospheric pressure is January (1017.4mbar).
The month with the lowest atmospheric pressure is September (1012.3mbar).

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Average wind speed in September
Akumal, Mexico

Average wind speed in September - Akumal, Mexico
  • Average wind speed in September: 10km/h

The windiest month (with the highest average wind speed) is March (13.1km/h).
The calmest month (with the lowest average wind speed) is September (10km/h).

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Average humidity in September
Akumal, Mexico

Average humidity in September - Akumal, Mexico
  • Average humidity in September: 79%

The months with the highest relative humidity are June and October (80%).
The month with the lowest relative humidity is March (73%).

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Average rainfall in September
Akumal, Mexico

Average rainfall in September - Akumal, Mexico
  • Average rainfall in September: 110mm

The wettest month (with the highest rainfall) is June (139mm).
The driest month (with the least rainfall) is March (21mm).

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Average rainfall days in September
Akumal, Mexico

Average rainfall days in September - Akumal, Mexico
  • Average rainfall days in September: 23.5 days

The month with the highest number of rainy days is September (23.5 days).
The month with the least rainy days is April (11.3 days).

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Average sea temperature in September
Akumal, Mexico

Average sea temperature in September - Akumal, Mexico
  • Average sea temperature in September: 29°C

The best months for swimming (with the highest average sea temperature) are August, September and October (29°C).
The coldest months (with the lowest average sea temperature) are January, February and March (26°C).

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Average daylight in September /
Average sunshine in September
Akumal, Mexico

Average daylight in September / Average sunshine in September - Akumal, Mexico
  • Average daylight in September: 12h and 15min

The month with the longest days is June (Average daylight: 13h and 21min).
The month with the shortest days is December (Average daylight: 10h and 55min).

  • Average sunshine in September: 8h and 48min

The months with the most sunshine are July and August (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 7h and 54min).

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Average sunshine days in September
Akumal, Mexico

Average sunshine days in September - Akumal, Mexico
  • Average sunshine days in September: 4.6 days

The month with the most sunshine days is April (15.8 days).
The month with the least sunshine days is September (4.6 days).

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Average UV index in September
Akumal, Mexico

Average UV index in September - Akumal, Mexico
  • Average UV index in September: 7

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

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Average cloud cover in September
Akumal, Mexico

Average cloud cover in September - Akumal, Mexico
  • Average cloud cover in September: 35

The month with the most cloud cover is June (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in September
Akumal, Mexico

Average visibility in September - Akumal, Mexico
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, November and December (10km).
The month with the lowest visibility is October (9km).

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