September weather forecastSavannah, GA
September
Weather in September
September commences the fall season in grandeur for Savannah, Georgia. The most noticeable change from August is the decrease in temperature, with the average high cooling down to 85.5°F (29.7°C). A significant drop in rain days is observed, along with a decrease in Sea temperature. Experiencing fewer daylight hours, September offers a pleasant transition from the hot summer season. This beautiful month brings autumnal hues along with it, painting the city in brilliant shades of brown and orange.Temperature
The commencement of September brings an average high-temperature of a warm 85.5°F (29.7°C), marking an inconsequential divergence from August. Nighttime temperatures in September average to an agreeable 72.5°F (22.5°C).Heat index
The heat index value for September is appraised at a very hot 95°F (35°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.
Humidity
In Savannah, Georgia, the average relative humidity in September is 75%.Rainfall
In September, the rain falls for 13.5 days. Throughout September, 2.36" (60mm) of precipitation is accumulated. In Savannah, during the entire year, the rain falls for 155.6 days and collects up to 29.41" (747mm) of precipitation.Snowfall
February through November are months without snowfall.Ocean temperature
In Savannah, in September, the average water temperature is 82°F (27.8°C).Note: Surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as excellent and extremely agreeable for enduring enjoyment in water activities.
Daylight
In Savannah, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 7:00 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:10 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Alert! Sand and water increase UV exposure due to their reflective properties.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Savannah, GA
- Average high temperature in September: 85.5°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (58.1°F).
- Average low temperature in September: 72.5°F
The months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (43.7°F).
Average pressure in September
Savannah, GA
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in September
Savannah, GA
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Savannah, GA
- Average humidity in September: 75%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Savannah, GA
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days in September
Savannah, GA
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is August (21.3 days).
The month with the least rainy days is November (7.3 days).
Average snowfall in September
Savannah, GA
- Average snowfall in September: 0"
The months with the highest snowfall are January and December (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Savannah, GA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January, February and December (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Savannah, GA
- Average sea temperature in September: 82°F
The best month for swimming (with the highest average sea temperature) is August (83.7°F).
The coldest month (with the lowest average sea temperature) is February (56.6°F).
Average daylight in September /
Average sunshine in September
Savannah, GA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 30min
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 24min).
Average sunshine days in September
Savannah, GA
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is August (8.5 days).
Average UV index in September
Savannah, GA
- 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 January (UV index 3).
Average cloud cover in September
Savannah, GA
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Savannah, 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).
