September weather forecast
Bruly Saint Martin, LA

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Weather in September

The first month of the autumn, September, is still a hot month in Bruly Saint Martin, Louisiana, with an average temperature varying between 87.3°F (30.7°C) and 70.5°F (21.4°C).

Temperature

September welcomes an average high-temperature of a still tropical 87.3°F (30.7°C), not much different from the preceding month. Nighttime temperatures in September average to a pleasant 70.5°F (21.4°C).

Heat index

The heat index in September is evaluated at a blisteringly hot 104°F (40°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. 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. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The months with the highest humidity are February, September and December, with an average relative humidity of 80%.

Rainfall

In Bruly Saint Martin, in September, during 17.9 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. In Bruly Saint Martin, during the entire year, the rain falls for 165.4 days and collects up to 26.93" (684mm) of precipitation.

Snowfall

February through December 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 6:41 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

Sunshine

The average sunshine in September is 9.7h.

UV index

In September, the average daily maximum UV index in Bruly Saint Martin is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 6 during September translates into the following guidance:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.

Frequently asked questions

How hot does it get in Bruly Saint Martin in September?

The average high-temperature, in September, in Bruly Saint Martin, is 87.3°F (30.7°C), while the average low-temperature is 70.5°F (21.4°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in September is evaluated at 104°F (40°C).

What are the most humid months?

February, September and December, with an average relative humidity of 80%, are most humid months in Bruly Saint Martin.

What is the average humidity in September in Bruly Saint Martin?

In September, the average relative humidity is 80%.

How much does it rain in September?

In Bruly Saint Martin, during September, the rain falls for 17.9 days and regularly aggregates up to 2.01" (51mm) of precipitation.

When it does not snow?

In Bruly Saint Martin, snow does not fall in February through December.

How many hours of daylight does Bruly Saint Martin have in September?

In September, the average day length is 12h and 20min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:41 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

How long on average sun shines in September?

In Bruly Saint Martin, the average sunshine duration in September is 9.7h.

What is the UV index reading in September?

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Bruly Saint Martin, LA

Average temperature in September - Bruly Saint Martin, LA
  • Average high temperature in September: 87.3°F

The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (60.1°F).

  • Average low temperature in September: 70.5°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

Average pressure in September
Bruly Saint Martin, LA

Average pressure in September - Bruly Saint Martin, LA
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.96"Hg).

Average wind speed in September
Bruly Saint Martin, LA

Average wind speed in September - Bruly Saint Martin, LA
  • Average wind speed in September: 5mph

The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in September
Bruly Saint Martin, LA

Average humidity in September - Bruly Saint Martin, LA
  • Average humidity in September: 80%

The months with the highest relative humidity are February, September and December (80%).
The month with the lowest relative humidity is October (74%).

Average rainfall in September
Bruly Saint Martin, LA

Average rainfall in September - Bruly Saint Martin, LA
  • Average rainfall in September: 2.01"

The wettest month (with the highest rainfall) is July (4.25").
The driest month (with the least rainfall) is November (1.18").

Average rainfall days in September
Bruly Saint Martin, LA

Average rainfall days in September - Bruly Saint Martin, LA
  • Average rainfall days in September: 17.9 days

The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (8.1 days).

Average snowfall in September
Bruly Saint Martin, LA

Average snowfall in September - Bruly Saint Martin, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.16").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Bruly Saint Martin, LA

Average snowfall days in September - Bruly Saint Martin, LA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Bruly Saint Martin, LA

Average daylight in September / Average sunshine in September - Bruly Saint Martin, LA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in September
Bruly Saint Martin, LA

Average sunshine days in September - Bruly Saint Martin, LA
  • Average sunshine days in September: 9.9 days

The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is July (7.3 days).

Average UV index in September
Bruly Saint Martin, LA

Average UV index in September - Bruly Saint Martin, LA
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Bruly Saint Martin, LA

Average cloud cover in September - Bruly Saint Martin, LA
  • Average cloud cover in September: 30

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 27).

Average visibility in September
Bruly Saint Martin, LA

Average visibility in September - Bruly Saint Martin, LA
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, June, August, October, November and December (6mi).
The months with the lowest visibility are March, April, May, July and September (5mi).

Bruly Saint Martin, Louisiana, USA

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