Summerville climate
Summerville offers mild winters and a humid summer to manage
The current rows rate overall comfort at 3.3 out of 5, summer feel at 3.4, and winter feel at 3.9. The average summer high is 90°F, with 56 days above 90°F. The average winter low is 44°F / 7°C, with eight days below freezing. Six comfortable months, 79% humidity, 4.7 out of 5 air quality, and a 7.4 µg/m³ modeled fine-particle average shape the screening picture.
March through May and September through November are the best months; June through August are the toughest. Allergy levels are Poor, storm risk is High, and flood risk is Moderate. Cooling, shade, ventilation, trees, roof condition, drainage, backup power, and a plan for heat or storm alerts matter when the weather row meets a real home.
Living through the seasons
Summer and winter comfort tell a similar story.
- Overall Comfort
- Good
3.3 / 5
- Average Summer High
- 90°F
- Days Above 90°F
- 56 days/year
- Summer Feel
- Very Good
Hot · 90°F
Good
3.4 / 5
- Average Winter Low
- 44°F / 7°C
- Days Below Freezing
- 8 days/year
- Winter Feel
- Very Good
Very Good
Excellent
3.9 / 5
The shape of the year
Humidity, comfortable months, and sunshine show how the seasons differ.
- Humidity
- 79%
- Comfortable Months
- 6 months
- Solar Exposure
- 1685 peak sun hrs/yr
Good
Fair
Fair
Air, allergies, and weather
Air quality and allergies shape day to day comfort. The best months and weather risks help with timing.
Air and allergies
- Air Quality
- Excellent
- Allergy Levels
- Poor
4.7 / 5
Current AQI
Checking…
Current PM2.5
Checking…
Timing and weather
- Long Term Fine Particle Pollution
- 7.4 µg/m³ 2021-2025 modeled average
- Best Months
- Mar, Apr, May, Sep, Oct, Nov
- Toughest Months
- Jul, Aug, Jun
- Heat Risk
- Moderate
- Drought Risk
- Low
- Weather Volatility
- Strong
Good · 7.4 µg/m³ 2021-2025 modeled average
Good
3.6 / 5
Summerville in everyday life
Could Summerville work for you?
What may work well
- Six comfortable months, an average winter low of 44°F / 7°C, and only eight freezing days support a mild-winter plan.
- Azalea Park, trails, libraries, and nearby river and historic sites offer seasonal choices.
- Town, county, NWS, and flood sources support practical preparation rather than a simple climate label.
What to think about
- A 90°F average summer high, 56 hot days, and 79% humidity can limit midday activity.
- Allergy levels are Poor, storm risk is High, and flood risk is Moderate.
- Cooling, shade, trees, drainage, power, and insurance can change the comfort of a property.
Choose a Summerville home that makes the climate usable
Inspect cooling and shade
Check HVAC age, windows, shutters, orientation, shade, fans, water, electricity, insulation, humidity, and a comfortable room for hot days.
Review rain and drainage
Inspect roof, gutters, trees, grade, drains, lower rooms, roads, property entry, power, flood zone, and the route to care after heavy rain.
Plan the hardest months
Keep indoor, shaded, library, museum, park, and cultural alternatives ready for June through August and storm days.
Use official warnings
Follow NWS, town, county, flood, heat, road, and emergency notices before outdoor activities or travel.
Questions retirees ask
What is Summerville's climate like for retirement?
The current rows show a 90°F average summer high, 56 days above 90°F, a 44°F / 7°C average winter low, eight freezing days, 79% humidity, and six comfortable months.
Is Summerville too hot in summer?
The heat can be workable with shade, cooling, water, ventilation, flexible timing, and indoor alternatives, but the home and health plan should be checked during the hottest months.
What should a home inspection include?
Check HVAC, roof, trees, windows, shutters, shade, drainage, flood zone, lower rooms, humidity, power, storm history, and the route to care during heat or rain.
When is the easiest period to visit?
The current rows name March through May and September through November as the best months. June through August are the toughest, so visit in summer if heat is a concern.
Summerville's climate offers a pleasant winter and useful shoulder seasons, but the home must handle heat, humidity, storms, drainage, and outages. Visit in the hardest period, inspect cooling and insurance, and see whether the town remains comfortable beyond a spring weekend.
Sources
Climate comfort helps estimate how practical daily life may feel across the year, especially for heat, humidity, cold, and seasonal constraints.
Seasonal timing, health conditions, air conditioning, air quality, and elevation can change the lived experience.
- NASA POWER
Used for Overall Comfort, Summer Feel, Average Summer High, Days Above 90°F, Winter Feel, Average Winter Low, Days Below Freezing, Humidity, Comfortable Months, Solar Exposure, Best Months, Toughest Months, Allergy Levels, Heat Risk
- Open-Meteo / Copernicus CAMS
Used for Air Quality, Long-Term Fine-Particle Pollution
Checked 2026-05-18
- Federal Emergency Management Agency National Risk Index
Used for Drought Risk
- NOAA IBTrACS
Used for Weather Volatility
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Partner with Retirement ListsResearch and writing byGrant Gibson
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