Overview and Climate Context
Savannah, Georgia experiences a humid subtropical climate, characterized by long, hot and humid summers and mild winters. The city lies on the Atlantic coastal plain, and its weather year round is shaped by latitude, proximity to the Atlantic Ocean, and inland frontal systems. Summers typically bring daytime highs in the upper 80s to low 90s °F (31–33 °C) with frequent afternoon thunderstorms. Winters are generally mild, with daytime highs often in the 60s °F (15–18 °C). This guide explains monthly conditions, typical extremes, and how to plan around seasonal patterns.
Understanding Savannah’s climate helps residents and visitors anticipate humidity, rainfall timing, and temperature swings across the year. Below, organized by season, followed by month-by-month expectations and practical planning advice.
How We Describe Savannah’s Weather Year Round
When describing Savannah GA weather year round, forecasters and climatologists rely on 30-year normals (most recently 1991–2020) to define averages and extremes. They consider daily high and low temperatures, average precipitation days, humidity, and the timing of frontal passages. Savannah rarely sees severe heat index values above 105 °F, yet the combination of warmth and moisture can make summer afternoons feel oppressively muggy. Hurricanes and tropical systems can affect the region between June and November, though direct hits are not each year. In winter, freezes are possible but sustained hard freezes are uncommon.
Key Climate Drivers
- Atlantic Ocean moderation: coastal influence keeps winters milder than inland Georgia.
- Southwesterly flow in summer transports moisture from the Gulf and tropics.
- Midlatitude frontal systems in cool seasons trigger most cold-season rainfall and occasional severe thunderstorms.
Seasonal Breakdown
Spring (March – May)
Spring brings warming temperatures and increasingly frequent rain events. March can still feel winterlike at night, while April and May become humid and convectively active. March averages highs near 70 °F (21 °C), with lows around 49 °F (9 °C). By May, highs climb into the mid-80s °F (29–30 °C), and lows stay comfortably in the 60s °F (16–19 °C).
Rainfall increases from March through May as thunderstorm frequency rises. Pollen counts can peak in spring, affecting sensitive individuals. Severe weather risk climbs in April and May, with the potential for strong thunderstorms and isolated tornadoes.
Summer (June – August)
Summer is the longest and most consistently hot season in Savannah. Average highs range from 89–91 °F (32–33 °C) in June and July, with high humidity pushing heat indices into the mid- to upper-90s °F on many afternoons. Overnight lows seldom fall below 70 °F (21 °C), which offers little relief. Thunderstorms are a daily feature, typically brief but intense, often arriving in the late afternoon or evening.
Tropical disturbances can approach from the Atlantic or Gulf, bringing locally heavy rain and gusty winds even when systems remain offshore. Heat-related illness risk is elevated during multi-day stretches of high heat and humidity, especially for outdoor workers and those without adequate cooling.
Autumn (September – November)
Autumn begins hot and gradually cools. September remains summerlike, with highs near 86–88 °F (30–31 °C) and lows in the upper 60s to low 70s °F (19–22 °C). October sees a noticeable drop, with highs averaging in the upper 70s to low 80s °F (25–27 °C) and lows in the 50s to lower 60s °F (10–16 °C). November is often crisp and pleasant, though warm spells can occur.
Hurricane season officially ends in November, and tropical systems can still affect the region into early fall. Rainfall becomes more variable, and frontal passages increase in frequency, setting the stage for winter weather transitions.
Winter (December – February)
Winter in Savannah is mild by national standards, but cool air outbreaks can lower daytime highs into the 40s–50s °F (4–10 °C) for brief periods. Average highs stay in the upper 50s to low 60s °F (14–17 °C), while overnight lows often range from the 30s to low 40s °F (1–5 °C). Freezing temperatures occur occasionally but are not persistent.
Precipitation is generally light to moderate, with occasional strong cold-frontal rain events. Snow and sleet are rare; when they occur, accumulation is typically minimal and short-lived. The relative humidity is lower than in summer, and sunny intervals become more common.
Month-by-Month Averages and Typical Ranges
Below are long-term averages (1991–2020 normals) for temperature and precipitation. Note that year-to-year variability due to patterns like El Niño or La Niña can shift these ranges by notable margins.
| Month | Avg High (°F/°C) | Avg Low (°F/°C) | Avg Precipitation (in) | Typical Conditions |
|---|---|---|---|---|
| January | 61 / 16 | 41 / 5 | 3.7 | Mild to cool, occasional frontal rain |
| February | 64 / 18 | 43 / 6 | 3.6 | Mild, dry intervals, rare freeze |
| March | 70 / 21 | 49 / 9 | 4.3 | Warming, increasing rain and pollen |
| April | 77 / 25 | 57 / 14 | 3.6 | Spring showers, storm chances rise |
| May | 84 / 29 | 65 / 18 | 4.4 | Humid, convective thunderstorms frequent |
| June | 90 / 32 | 71 / 22 | 6.1 | Hot, humid, daily thunderstorms |
| July | 91 / 33 | 73 / 23 | 5.3 | Peak heat and humidity |
| August | 90 / 33 | 72 / 22 | 4.6 | Continued summer heat and storms |
| September | 87 / 31 | 69 / 21 | 3.9 | Warm with increasing frontal rain |
| October | 79 / 26 | 57 / 14 | 3.2 | Pleasant, drier, storm chances lessen |
| November | 71 / 22 | 46 / 8 | 3.2 | Cool and increasingly dry |
| December | 63 / 17 | 43 / 6 | 3.5 | Mild to cool, seasonal transition |
Practical Planning: What to Pack and Expect
What to Pack by Season
- Hot season (May – September): Light, breathable clothing; rain gear (compact umbrella or rain jacket); sunscreen; wide-brim hat; moisture-wicking layers for air-conditioned indoor spaces.
- Transition seasons (March, April, October): Layers (light jacket or cardigan); both sunglasses and a rain jacket; comfortable walking shoes that handle damp pavement.
- Cool season (November – February): Medium-weight jacket or fleece; long pants; closed-toe shoes; an extra layer for evenings.
Health and Comfort Tips
- Hydrate consistently in summer; limit strenuous outdoor activity during peak heat on high heat index days.
- Monitor pollen forecasts in spring if you have allergies.
- Prepare a basic hurricane kit (water, nonperishable food, flashlight, batteries) during June–November.
- Be cautious on sidewalks and roads during and after brief heavy downpours; localized flooding can occur in low-lying areas.
Precipitation Patterns and Extremes
Savannah averages about 45–55 inches of rainfall annually, distributed across the year with a summer peak. Thunderstorms contribute the majority of warm-season rain, while cool-season storms are often frontal and can include heavier, albeit less frequent, rainfall events. The city can experience occasional tropical downpours that produce short-term totals well above the daily average. Droughts are possible but typically short; conversely, short-lived flash flooding can accompany intense storms.
Notable Temperature and Rainfall Extremes
| Metric | Record or Typical Range | Context |
|---|---|---|
| Highest recorded temperature | 106 °F (41 °C) | Represents an extreme summer peak; heat indices commonly reach mid- to upper-90s °F. |
| Lowest recorded temperature | 3 °F (−16 °C) | Rare, hard freeze event; not typical of most winters. |
| Average first/last freeze | Mid-December to late February | Indicative of winter season length and frost risk. |
| Wettest month (typical) | July or August | Corresponding to peak thunderstorm activity. |
| Annual average precipitation | ~48 in (122 cm) | Climate normal 1991–2020; year-to-year variation can be significant. |
Living and Planning Around Savannah’s Weather
For people moving to or visiting Savannah, aligning activities with seasonal weather improves comfort and safety. Summer calls for flexible scheduling—plan outdoor activities for early morning or evening when it’s cooler, and build in downtime during peak heat. In autumn and spring, the weather is often ideal for festivals, walking tours, and outdoor dining. Winter remains suitable for sightseeing, but travelers should keep a light jacket handy for breezy evenings and possible cool snaps.
Local infrastructure, including drainage and building codes, is adapted to the region’s humidity and rainfall regime. Staying aware of tropical outlooks in late summer and fall, and checking local forecasts regularly, supports better day-to-day decisions throughout the year.
Summary
Savannah GA weather year round is dominated by a humid subtropical pattern: hot, humid summers with frequent thunderstorms; mild, moderately dry winters with occasional cold snaps; and active spring and autumn transition periods. Understanding monthly trends, extremes, and practical planning measures helps you prepare for heat, rain, and the occasional winter chill. With appropriate precautions, the city’s climate remains manageable and supportive of year-round outdoor and indoor activities.