Savannah weather in September

In September, Savannah sees average daytime highs of 82°F and overnight lows near 73°F, with 4.8 in of rain across 13.6 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 84°F in the first days to 80°F by the end. The sky is clear or mostly clear about 38% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Savannah's 8th-clearest and 9th-windiest month. For the whole year in context, see Savannah's year-round climate.

Daytime high
82°
4th warmest
Overnight low
73°
9th coldest
Rainfall
4.8 in
13.6 wet days
Daylight
12 h 12 min
6:13 AM – 6:25 PM
Cloud cover
56%
8th clearest
Wind
9 mph
9th windiest
Solar energy
4.84 kWh/m²
Travel score
5.7
out of 10

Savannah is city in and county seat of Chatham County, Georgia, United States.

Density
524/km²
people per km²
Founded
1733

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 84°F in the first days to 80°F by the end.

A typical September day in Savannah reaches about 82°F in the afternoon and slips back to 73°F overnight — a 9°F spread between the day's warmth and the night's chill. On most days the high lands between 77°F and 86°F. Set against its neighbours, September runs about 3°F cooler than August and about 7°F warmer than October.

60°70°80°90°151015202530
Avg high (°F)Avg low (°F)
18476
28476
38475
48375
58375
68375
78375
88375
98374
108374
118374
128374
138274
148274
158274
168273
178273
188273
198273
208173
218172
228172
238172
248172
258071
268071
278071
288071
298070
307970

How September really feels in Savannah

Once humidity and wind are folded in, September averages 2 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
2
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Savannah weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan58° / 46°3.48.810.14.6
Feb60° / 48°3.38.710.85.0
Mar65° / 53°3.18.211.86.4
Apr72° / 60°2.76.812.87.3
May78° / 68°2.38.413.67.1
Jun84° / 75°4.615.414.15.0
Jul86° / 77°4.516.313.94.2
Aug85° / 77°5.918.813.24.2
Sep82° / 73°4.813.612.25.7
Oct75° / 65°3.87.811.27.4
Nov67° / 55°2.36.310.46.9
Dec61° / 49°3.48.79.95.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15149
25248
35248
45347
55446
65446
75545
85545
95644
105545
115545
125644
135644
145644
155644
165644
175644
185545
195545
205545
215545
225545
235545
245545
255545
265545
275545
285644
295545
305545

Chance of precipitation in September

Any precipitation

Savannah gets around 4.8 in of rain over 13.6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 45% and peaks near 57% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
157
256
355
454
553
652
751
850
949
1048
1147
1246
1345
1444
1544
1643
1743
1842
1942
2042
2141
2241
2340
2440
2539
2639
2738
2838
2937
3037

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 52% of days. Sticky, muggy-or-worse air turns up on roughly 84% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1013145923
2013156021
3024165820
4024165919
5025175818
6025185916
7026195815
8036205714
9037215613
10037225612
11038225611
12039235510
1304923559
14041024539
15041024548
16041125528
17041125537
18051125527
19151225516
20151225516
21151325515
22251325505
23361424494
24361424484
25461524474
26571624453
27571624443
28681724433
29781725413
30781725403

Wind in September

Winds average 9 mph in September.

Across September, daily wind ranges from about 9 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
2810light breeze
2910light breeze
3010light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over September. Sunrise moves from 6:03 AM to 6:22 AM, and sunset from 6:45 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:036:45
212.76:046:44
312.66:056:42
412.66:056:41
512.66:066:40
612.56:076:38
712.56:076:37
812.56:086:36
912.46:086:34
1012.46:096:33
1112.46:106:31
1212.36:106:30
1312.36:116:29
1412.36:126:27
1512.26:126:26
1612.26:136:25
1712.26:146:23
1812.16:146:22
1912.16:156:20
2012.16:156:19
2112.06:166:18
2212.06:176:16
2312.06:176:15
2411.96:186:14
2511.96:196:12
2611.96:196:11
2711.86:206:09
2811.86:216:08
2911.86:216:07
3011.76:226:05

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.84 kWh/m².

For context, solar energy here swings from a low near 2.68 kWh/m² to a high of 6.59 kWh/m² in May across the year — September's 4.84 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
134.9Bright
144.9Bright
154.9Bright
164.8Bright
174.8Bright
184.8Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.6Bright
244.6Bright
254.6Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
Planning a trip in September

Hazard calendar for Savannah

In seasonPeak

In September, Savannah sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Savannah sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Savannah?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.7
Sightseeing
6th-best month of the year
6.2
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Savannah for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Savannah in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Savannah sees daytime highs around 82°F and nights near 73°F. Pack light clothes and rain gear. Worth having: sun protection. About 14 days see rain.

light clothesrain gearsun protection

Sea temperature near Savannah in September

The nearest coast averages about 82°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 19 mi away) is warmest in August at about 84°F and coldest in February near 58°F.

It's comfortable for a long swim from Apr 22 to Nov 16 — about 6.9 months when the water holds above 68°F.

60°70°80°90°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan59Cool
Feb58Bracing
Mar61Cool
Apr67Cool
May74Refreshing
Jun80Warm
Jul83Tropical
Aug84Tropical
Sep82Warm
Oct76Warm
Nov68Refreshing
Dec62Cool

UV index in Savannah in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Savannah peaks around July 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 12UV 10Dec 19UV 3
UV index (midday)Level
Jan4Moderate
Feb5High
Mar7High
Apr7High
May9Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Savannah in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Savannah is worst in March — around 25 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (December, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMar 1723 µg/m³Dec 158 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb12Moderate
Mar25Moderate
Apr14Moderate
May14Moderate
Jun15Moderate
Jul17Moderate
Aug15Moderate
Sep11Good
Oct8Good
Nov8Good
Dec7Good
Location & terrain

Where is Savannah?

Savannah sits at 32.1°N, 81.1°W, 20 ft above sea level, in United States. The nearest listed city is Pooler, 8.7 mi away.

Topography around Savannah

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Savannah.

Within 2 miles, the terrain around Savannah has only modest variations in elevation — a maximum elevation change of 89 ft around an average of 23 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 197 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 374 ft.

The land around Savannah is covered by artificial surfaces (35%) and trees (31%) within 2 miles, trees (45%) and wetland (23%) within 10 miles, and trees (55%) and water (28%) within 50 miles.

2 miles
89 ft
10 miles
197 ft
50 miles
374 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Pooler 8.7 mi · Wilmington Island 9.3 mi · Bluffton 17 mi · Hilton Head 22 mi · Hilton Head Island 22 mi · Hinesville 34 mi · Statesboro 47 mi · Brunswick 68 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Savannah (32.0835°, -81.0998°, elevation 20 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).