Savannah weather in September

September in Savannah: sweltering, rainy, with clean air — fine if you can take sticky heat.

Updated September 2026 · climate normals from ERA5 reanalysis

Savannah🇺🇸 United States · US South · City67
  1. 73Jan
  2. 81Feb
  3. 88Mar
  4. 91Apr
  5. 77May
  6. 65Jun
  7. 60Jul
  8. 58Aug
  9. 67Sep
  10. 82Oct
  11. 84Nov
  12. 72Dec

#9 of 12 months in Savannah · #1012 of 1413 destinations to visit in September · comfort 67/100 (tier C)

Days
31°C
Nights
21°C
Wet days
8
Sun
9.7 h
Humidity
80%
Daylight
12 h
Savannah, United States
Photo: Connor Scott McManus · Pexels

Traveller notes on Savannah in September

Notes from nearby Hilton Head Island (36 km away)

Savannah doesn't have its own notes for September yet — these are about Hilton Head Island, close enough to share the season.

Asked whether hurricane season should put them off September, regulars answer with geography and lead time rather than reassurance: the island sits in an unlikely spot for a direct landfall, and a storm that does threaten gives several days of warning, so the decision can be made late. What they sell the month on is the emptiness - the summer crowds have gone, the water is still warm at 28.2C, and the temperatures are comfortable at 29.4C over 22.8C. They are also honest that September is among the wettest months, quoting about five inches; our row has 157.2mm falling across just 7.1 days, twenty-two millimetres each. The record: humidity 79 percent, 9.9 hours of sun and a 19.8 kph wind.
TheStormsGiveDaysOfNotice · September · 1 month ago · about Hilton Head Island · Read more on Tripadvisor ↗

Other months in Savannah

Regulars call this a genuinely fantastic month, warm without yet tipping into the thick, oppressive humidity that defines June onward, with sunny days in the 80s Fahrenheit and rain chances still comparatively low. Our row backs that warm, still-manageable read, 29.3C reading as a hot 31C, over 18.2C nights, with 99.1mm of rain across 6.9 days and humidity at 73 percent. Regulars are specific this window is worth prioritizing over deep summer for anyone planning to walk the historic squares extensively, since the heat index climbs sharply just weeks later. Light, breathable fabrics remain the standard packing advice even this early. The record: 11.2 hours of sun, a 21.4 kph wind and AQI 46.
StillNiceBeforeJuneHumidityTakesOver · May · 1 month ago · Read more on Tripadvisor ↗
Regulars are specific about two things in February: it is too early for the main azalea display, which they date to mid-March, though a few blooms show up early in the sunniest spots; and the coast runs about ten degrees warmer than Atlanta while still needing a real jacket after dark. Our row backs both, 20.5C reading as 20C over 8.4C nights feeling 6C, with 70.4mm of rain across 5.7 days. The advantage of the month is crowds rather than blooms - January is slow and February only picks up gradually, well ahead of the high rates and booked-out hotels that spring brings with its flowers. The record: humidity 76 percent, 7.9 hours of sun, a 22 kph wind and AQI 40.
TooEarlyForTheAzaleasStillCoolAtNight · February · 1 month ago · Read more on Tripadvisor ↗
Regulars call November the start of the southern autumn and then manage the expectation it creates: this is a semitropical city of live oaks, so it stays green, and anyone arriving for northern colour will find some dark red and brown leaves on the ground by the end of the month and nothing scenic. What the month is for is walking - the squares, the riverfront, and the beach out at Tybee - with everything open year-round. Their averages of 71F and 48F are our 21.5C over 9.9C, warm by day and chilly after dark, and about 18C around Thanksgiving. The record: 73.9mm across 6.8 days, humidity 75 percent, 7.9 hours of sun and AQI 35.
GreenRatherThanGolden · November · 1 month ago · Read more on Tripadvisor ↗
Late March in Savannah is close to perfect by the forum's reckoning - days of 60F and better, some cool nights, and the dogwoods and azaleas coming out from about mid-month. Our row gives 22.9C days against 10.6C nights, which is that cool-night gap in figures. Three caveats they raise. There is usually one more cold spell between early March and St Patrick's Day, with nights below 40F. The 17th itself is the one date to avoid unless the crowds are the point, because the festival fills the town. And gnat season starts in March and runs to May. The record: 6 precipitation days carrying 80.5mm, a 22.8 kph wind and 9.3 hours of sun.
AvoidTheSeventeenth · March · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Savannah's card on the map.

Savannah climate normals — September

Daytime high31°C / 87°F🔥 sweltering
Nighttime low21°C / 70°F
Feels like (high)34°C / 93°F
Rainfall146 mm / 5.7 in🌧 rainy
Rainy days8 days
Humidity80%💦 very humid
Dew point21°C / 69°F
Sunshine9.7 h/day
Daylight12.3 h
Wind21 km/h / 13 mph
Air quality (US AQI)46🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Savannah in September

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

BusySummer break in United States(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Savannah's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherSavannah's best weather comes in March, April and November — separate windows, not one continuous season.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Savannah in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Hazard

    Hurricane season

    1 Jun – 30 Nov

    The Atlantic season runs June to November. The city sits far enough up the river that surge rather than wind is the risk, and the whole coast has evacuated twice in the last decade. Source ↗

  • Hazard

    Summer heat and humidity

    15 Jun – 10 Sep · usuallyExtreme heat

    Coastal Georgia in high summer is hot with the humidity of the marsh behind it, and the live-oak shade over the squares is the only thing that makes walking it possible before evening. Source ↗

What's on around the world in September →

Nearby, and something's on

Within 300 km of Savannah — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Savannah?

Loading map…

Savannah in September — FAQ

Is September a good time to visit Savannah?
September in Savannah: sweltering, rainy, with clean air — fine if you can take sticky heat. It ranks #9 of 12 months for Savannah on SeasonMap's comfort score (67/100).
What is the weather like in Savannah in September?
In September, Savannah averages a daily high of 30.7°C and a low of 21.1°C, with about 145.6 mm of rain over roughly 8.3 rainy days.
What is the air quality in Savannah in September?
Savannah has a mean US Air Quality Index of about 46 in September.

Within 300 km: Hilton Head Island's Loggerhead nesting on 1 May – 31 Oct, and Jacksonville's Loggerhead nesting on 1 May – 31 Oct.