September weather forecast and climate
Yelapa, Mexico

September, the first month of the autumn, in Yelapa, is still a warm month, with average temperature fluctuating between 21.8°C (71.2°F) and 28.7°C (83.7°F).

Temperature

In September, the average high-temperature is essentially the same as in August - a still warm 28.7°C (83.7°F). The average low-temperature, in September, is 21.8°C (71.2°F).

Heat index

The average heat index is evaluated at a hot 34.9°C (94.8°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (differences in body mass, height, and shape, wind, clothing), and activity. 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. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The most humid month is September, with an average relative humidity of 85%.

Rainfall

In Yelapa, in September, during 24.8 rainfall days, 160mm (6.3") of precipitation is typically accumulated. In Yelapa, Mexico, during the entire year, the rain falls for 153.7 days and collects up to 751mm (29.57") of precipitation.

Daylight

In Yelapa, Mexico, the average length of the day is 12.2h.

Sunshine

September has the least sunshine of the year, with an average of 8.1h of sunshine.

UV index

Months with the highest UV index are January through November, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Yelapa?

In September, in Yelapa, the average high-temperature is 28.7°C (83.7°F), and the average low-temperature is 21.8°C (71.2°F). In September, the average heat index (a.k.a. 'feels like', 'real feel'), that combines both air temperature and relative humidity, is appraised at 34.9°C (94.8°F).

What is the most humid month in Yelapa?

With an average relative humidity of 85%, September is the most humid month in Yelapa.

What is the average humidity in September in Yelapa?

The average relative humidity in September in Yelapa, Mexico, is 85%.

How much does it rain in Yelapa in September?

In Yelapa, during September, the rain falls for 24.8 days and regularly aggregates up to 160mm (6.3") of precipitation.

How many hours of daylight does Yelapa have in September?

In Yelapa, the average length of the day in September is 12.2h.

What is the month with the least sunshine in Yelapa?

September has the least sunshine of the year in Yelapa, with an average of 8.1h of sunshine.

How many hours of sunshine does Yelapa have in September?

The average sunshine in September is 8.1h.

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

Months with the highest UV index are January through November, with an average maximum UV index of 6.

What is the UV index intensity in September in Yelapa?

In Yelapa, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in September - Yelapa, Mexico
  • Average high temperature in September: 28.7°C

The warmest month (with the highest average high temperature) is May (30.4°C).
The month with the lowest average high temperature is January (26.3°C).

  • Average low temperature in September: 21.8°C

The month with the highest average low temperature is August (22.1°C).
The coldest month (with the lowest average low temperature) is February (16.4°C).

Average pressure in September - Yelapa, Mexico
  • Average pressure in September: 1010.9mbar

The month with the highest atmospheric pressure is January (1014.7mbar).
The month with the lowest atmospheric pressure is September (1010.9mbar).

Average wind speed in September - Yelapa, Mexico
  • Average wind speed in September: 5.7km/h

The windiest month (with the highest average wind speed) is March (7km/h).
The calmest month (with the lowest average wind speed) is August (5.5km/h).

Average humidity in September - Yelapa, Mexico
  • Average humidity in September: 85%

The month with the highest relative humidity is September (85%).
Months with the lowest relative humidity are March and April (60%).

Average rainfall in September - Yelapa, Mexico
  • Average rainfall in September: 160mm

The wettest month (with the highest rainfall) is August (167mm).
The driest month (with the least rainfall) is April (1mm).

Average rainfall days in September - Yelapa, Mexico
  • Average rainfall days in September: 24.8 days

The month with the highest number of rainy days is August (27.7 days).
The month with the least rainy days is April (2.1 days).

Average daylight in September / Average sunshine in September - Yelapa, Mexico
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13.4h).
The month with the shortest days is December (Average daylight: 10.9h).

  • Average sunshine in September: 8.1h

The month with the most sunshine is May (Average sunshine: 9.8h).
The month with the least sunshine is September (Average sunshine: 8.1h).

Average sunshine days in September - Yelapa, Mexico
  • Average sunshine days in September: 3.7 days

The month with the most sunshine days is April (28.1 days).
The month with the least sunshine days is August (2.7 days).

Average UV index in September - Yelapa, Mexico
  • Average UV index in September: 6

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October and November (UV index 6).
The month with the lowest UV index is December (UV index 5).

Average cloud cover in September - Yelapa, Mexico
  • Average cloud cover in September: 44

The month with the most cloud cover is September (Cloud cover 44).
Months with the least cloud cover are March and May (Cloud cover 10).

Average visibility in September - Yelapa, Mexico
  • Average visibility in September: 9km

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