September weather forecast
Sea Island, GA

Share

Weather in September

September, the first month of the autumn in Sea Island, is still a warm month, with an average temperature fluctuating between 84.9°F (29.4°C) and 74.3°F (23.5°C).

Temperature

Sea Island sees the arrival of September with an average high-temperature of a warm 84.9°F (29.4°C), indicating a subtle variation from August. Nighttime temperatures in September average to 74.3°F (23.5°C).

Heat index

In September, the average heat index is appraised at a torrid 95°F (35°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is achieved by amalgamating air temperature with the relative humidity readings. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In September, the average relative humidity in Sea Island is 77%.

Rainfall

In Sea Island, Georgia, in September, it is raining for 19.2 days, with typically 2.8" (71mm) of accumulated precipitation. In Sea Island, during the entire year, the rain falls for 163.3 days and collects up to 20.43" (519mm) of precipitation.

Snowfall

In Sea Island, snow does not fall in January, March through November.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of the month, sunrise is at 7:01 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:11 pm EDT.

Sunshine

The average sunshine in September in Sea Island is 8.6h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 7 during September leads to these instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
[Resources]

Frequently asked questions

Is it hot in Sea Island during September?

The high-temperature, in September, in Sea Island, is 84.9°F (29.4°C), while the low-temperature averages to 74.3°F (23.5°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 95°F (35°C).

What is the average humidity in September in Sea Island?

In Sea Island, Georgia, the average relative humidity in September is 77%.

How many days does it rain in September in Sea Island?

In Sea Island, Georgia, during September, the rain falls for 19.2 days and regularly aggregates up to 2.8" (71mm) of precipitation.

When it does not snow in Sea Island?

In Sea Island, Georgia, snow does not fall in January, March through November.

What is the average length of the day in September in Sea Island?

The average day length in September is 12h and 20min.

When are sunrise and sunset in September in Sea Island?

In September, on the first day of the month, sunrise is at 7:01 am and sunset at 7:48 pm. On the last day of the month, in Sea Island, Georgia, sunrise is at 7:18 am and sunset at 7:11 pm EDT.

How many hours of sunshine does Sea Island have in September?

In September, the average sunshine duration is 8.6h.

What are the months with the highest UV index in Sea Island?

The months with the highest UV index in Sea Island, Georgia, are May through September, with an average maximum UV index of 7.

What is the UV index intensity in September in Sea Island?

In Sea Island, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sea Island, GA

Average temperature in September - Sea Island, GA
  • Average high temperature in September: 84.9°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (60.4°F).

  • Average low temperature in September: 74.3°F

The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (47.7°F).

[Resources]

Average pressure in September
Sea Island, GA

Average pressure in September - Sea Island, GA
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

[Resources]

Average wind speed in September
Sea Island, GA

Average wind speed in September - Sea Island, GA
  • Average wind speed in September: 7.6mph

The windiest months (with the highest average wind speed) are January and April (8.8mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

[Resources]

Average humidity in September
Sea Island, GA

Average humidity in September - Sea Island, GA
  • Average humidity in September: 77%

The months with the highest relative humidity are August and December (78%).
The month with the lowest relative humidity is March (72%).

[Resources]

Average rainfall in September
Sea Island, GA

Average rainfall in September - Sea Island, GA
  • Average rainfall in September: 2.8"

The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is January (0.59").

[Resources]

Average rainfall days in September
Sea Island, GA

Average rainfall days in September - Sea Island, GA
  • Average rainfall days in September: 19.2 days

The month with the highest number of rainy days is August (23.3 days).
The month with the least rainy days is January (8.2 days).

[Resources]

Average snowfall days in September
Sea Island, GA

Average snowfall days in September - Sea Island, GA
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are February and December (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Sea Island, GA

Average daylight in September / Average sunshine in September - Sea Island, GA
  • 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: 8h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

[Resources]

Average sunshine days in September
Sea Island, GA

Average sunshine days in September - Sea Island, GA
  • Average sunshine days in September: 7.4 days

The month with the most sunshine days is March (20.1 days).
The month with the least sunshine days is August (4.2 days).

[Resources]

Average UV index in September
Sea Island, GA

Average UV index in September - Sea Island, GA
  • Average UV index in September: 7

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

[Resources]

Average cloud cover in September
Sea Island, GA

Average cloud cover in September - Sea Island, GA
  • Average cloud cover in September: 30

The months with the most cloud cover are February and December (Cloud cover 38).
The months with the least cloud cover are April, May, June and July (Cloud cover 27).

[Resources]

Average visibility in September
Sea Island, GA

Average visibility in September - Sea Island, GA
  • Average visibility in September: 6mi

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

[Resources]

Sea Island, Georgia, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location