Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from 34.2°C (93.6°F) in August to a still tropical 30.7°C (87.3°F). El Yunque's temperature lowers to a mean of 21°C (69.8°F) during the nights in September.Heat index
September's average heat index is appraised at a tropical 31°C (87.8°F). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.Keep in mind the heat index values are meant for areas in shade and with light wind. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', quantifies the warmth felt when relative humidity is considered. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of 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 hold particular importance for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
The most humid month in El Yunque is September, with an average relative humidity of 45%.Rainfall
The wettest months are June and September, with an average 29mm (1.14") of rainfall.Snowfall
February through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 5:37 am and sunset at 6:21 pm. On the last day of September, sunrise is at 5:52 am and sunset at 5:45 pm MST.
Sunshine
The average sunshine in September in El Yunque, Mexico, is 9.5h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the UV index of 6 transforms into the following advice:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
How hot does it get in El Yunque in September?
What is the most humid month in El Yunque?
What is the average humidity in September in El Yunque?
What is the wettest month in El Yunque?
How many days does it rain in September in El Yunque?
When it does not snow in El Yunque?
What is the average length of the day in September in El Yunque?
What time are sunrise and sunset in September in El Yunque?
How many hours of sunshine does El Yunque have in September?
What is the UV index intensity in September in El Yunque?
Average temperature in September
El Yunque, Mexico
- Average high temperature in September: 30.7°C
The warmest month (with the highest average high temperature) is June (35.7°C).
The month with the lowest average high temperature is January (16.6°C).
- Average low temperature in September: 21°C
The month with the highest average low temperature is July (24.8°C).
The coldest month (with the lowest average low temperature) is January (5.5°C).
Average pressure in September
El Yunque, Mexico
- Average pressure in September: 1013.8mbar
The month with the highest atmospheric pressure is January (1019.2mbar).
The month with the lowest atmospheric pressure is June (1010.3mbar).
Average wind speed in September
El Yunque, Mexico
- Average wind speed in September: 11km/h
The windiest month (with the highest average wind speed) is April (13km/h).
The calmest month (with the lowest average wind speed) is December (8.7km/h).
Average humidity in September
El Yunque, Mexico
- Average humidity in September: 45%
The month with the highest relative humidity is September (45%).
The month with the lowest relative humidity is April (23%).
Average rainfall in September
El Yunque, Mexico
- Average rainfall in September: 29mm
The wettest months (with the highest rainfall) are June and September (29mm).
The driest month (with the least rainfall) is February (3mm).
Average rainfall days in September
El Yunque, Mexico
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (13 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
El Yunque, Mexico
- Average snowfall in September: 0mm
The month with the highest snowfall is January (4mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
El Yunque, Mexico
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and December (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
El Yunque, Mexico
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 8h and 18min).
Average sunshine days in September
El Yunque, Mexico
- Average sunshine days in September: 13.7 days
The months with the most sunshine days are January and December (27.3 days).
The months with the least sunshine days are July and September (13.7 days).
Average UV index in September
El Yunque, Mexico
- Average UV index in September: 6
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
El Yunque, Mexico
- Average cloud cover in September: 20
The month with the most cloud cover is September (Cloud cover 20).
The months with the least cloud cover are May and June (Cloud cover 10).
Average visibility in September
El Yunque, Mexico
- Average visibility in September: 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).
El Yunque, Mexico
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