September weather forecast and climate
Carlsbad, NM

The first month of the autumn, September, is still a warm month in Carlsbad, New Mexico, with average temperature fluctuating between 67.5°F (19.7°C) and 85.6°F (29.8°C).

Temperature

In September, the average high-temperature slightly decreases, from a tropical 93.7°F (34.3°C) in August, to a moderately hot 85.6°F (29.8°C). The average low-temperature, in Carlsbad, is 67.5°F (19.7°C).

Heat index

The average heat index in September is calculated to a hot 86.5°F (30.3°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
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 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, clothing, pregnancy), 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 especially crucial for babies and toddlers. 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 average relative humidity in September is 47%.

Rainfall

The month with the most rainfall in Carlsbad, New Mexico, is September when the rain falls for 12.2 days and typically aggregates up to 1.85" (47mm) of precipitation.

Snowfall

In Carlsbad snow does not fall in April through October.

Daylight

The average length of the day in September is 12.4h.

Sunshine

In September, the average sunshine is 10.4h.

UV index

The average daily maximum UV index in Carlsbad is 6. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to the Sun's UV rays for the average person.
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 Carlsbad?

The average high-temperature, in September, in Carlsbad, New Mexico, is 85.6°F (29.8°C), while the average low-temperature is 67.5°F (19.7°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), that combines air temperature and relative humidity, in September is calculated to 86.5°F (30.3°C).

What is the average humidity in September in Carlsbad?

In September, the average relative humidity is 47%.

How much does it rain in Carlsbad in September?

In Carlsbad, New Mexico, in September, during 12.2 rainfall days, 1.85" (47mm) of precipitation is typically accumulated.

What is the wettest month in Carlsbad?

September is the month with the most rainfall. Rain falls for 12.2 days and accumulates 1.85" (47mm) of precipitation.

When it does not snow in Carlsbad?

In Carlsbad snow does not fall in April through October.

What is the average length of the day in September in Carlsbad?

In Carlsbad, New Mexico, the average length of the day in September is 12.4h.

How many hours of sunshine does Carlsbad have in September?

In September, the average sunshine in Carlsbad is 10.4h.

What is the UV index reading in September in Carlsbad?

In September, the average daily maximum UV index in Carlsbad, New Mexico, is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in September - Carlsbad, NM
  • Average high temperature in September: 29.8°C

The warmest month (with the highest average high temperature) is June (35°C).
The month with the lowest average high temperature is December (13.5°C).

  • Average low temperature in September: 19.7°C

Months with the highest average low temperature are July and August (23.8°C).
The coldest month (with the lowest average low temperature) is January (2.9°C).

Average pressure in September - Carlsbad, NM
  • Average pressure in September: 1014.1mbar

The month with the highest atmospheric pressure is January (1020mbar).
The month with the lowest atmospheric pressure is June (1010.1mbar).

Average wind speed in September - Carlsbad, NM
  • Average wind speed in September: 14.5km/h

The windiest month (with the highest average wind speed) is April (18.8km/h).
The calmest months (with the lowest average wind speed) are January and December (13.5km/h).

Average humidity in September - Carlsbad, NM
  • Average humidity in September: 47%

The month with the highest relative humidity is December (48%).
The month with the lowest relative humidity is April (26%).

Average rainfall in September - Carlsbad, NM
  • Average rainfall in September: 47mm

The wettest month (with the highest rainfall) is September (47mm).
The driest month (with the least rainfall) is February (4mm).

Average rainfall days in September - Carlsbad, NM
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is July (12.3 days).
The month with the least rainy days is February (2.4 days).

Average snowfall in September - Carlsbad, NM
  • Average snowfall in September: 0mm

The month with the highest snowfall is December (17mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September - Carlsbad, NM
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (1.9 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Carlsbad, NM
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 10.4h

The month with the most sunshine is June (Average sunshine: 12h).
Months with the least sunshine are February and December (Average sunshine: 7.1).

Average sunshine days in September - Carlsbad, NM
  • Average sunshine days in September: 14.8 days

The month with the most sunshine days is January (26.7 days).
The month with the least sunshine days is August (14.3 days).

Average UV index in September - Carlsbad, NM
  • Average UV index in September: 6

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 visibility in September - Carlsbad, NM
  • Average visibility in September: 10km

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