Summerville weather in October

In October, Summerville sees average daytime highs of 76°F and overnight lows near 57°F, with 3.7 in of rain across 7.6 wet days and about 11.2 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 80°F in the first days to 73°F by the end. The sky is clear or mostly clear about 45% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 42 min by month's end. Set against the rest of the year, October is Summerville's 1st-clearest and 8th-windiest month. For the whole year in context, see Summerville's year-round climate.

Daytime high
76°
6th warmest
Overnight low
57°
7th coldest
Rainfall
3.7 in
7.6 wet days
Daylight
11 h 12 min
6:31 AM – 5:41 PM
Cloud cover
47%
1st clearest
Wind
6 mph
8th windiest
Solar energy
3.97 kWh/m²
Travel score
7.3
out of 10

Summerville is town in South Carolina, United States.

Density
974/km²
people per km²
Founded
1847

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 80°F in the first days to 73°F by the end.

A typical October day in Summerville reaches about 76°F in the afternoon and slips back to 57°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 67°F and 84°F. Set against its neighbours, October runs about 8°F cooler than September and about 9°F warmer than November.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
18164
28063
38063
48062
58062
67962
77961
87961
97860
107860
117860
127859
137759
147758
157758
167657
177657
187656
197656
207555
217555
227555
237454
247454
257453
267453
277353
287353
297352
307352
317251

How October really feels in Summerville

Once humidity and wind are folded in, October averages 0 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
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Summerville weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan59° / 39°3.28.810.14.8
Feb62° / 42°3.28.110.85.5
Mar69° / 48°3.48.811.76.7
Apr76° / 55°3.17.912.87.3
May82° / 64°3.210.313.76.1
Jun87° / 71°5.816.914.13.8
Jul90° / 74°6.119143.1
Aug88° / 73°6.61913.23.5
Sep84° / 68°4.912.612.25.3
Oct76° / 57°3.77.611.27.3
Nov68° / 47°2.56.610.37.0
Dec61° / 42°3.47.99.95.4

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 42%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
35248
45248
55347
65446
75446
85446
95545
105545
115644
125644
135743
145842
155842
165941
176040
186040
196139
206139
216238
226238
236238
246139
256238
266238
276139
286139
296040
306040
316040

Chance of precipitation in October

Any precipitation

Summerville gets around 3.7 in of rain over 7.6 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 26% and peaks near 33% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
133
233
333
432
532
631
731
831
930
1030
1129
1229
1328
1427
1526
1625
1724
1823
1922
2021
2121
2220
2320
2420
2520
2620
2720
2820
2920
3021
3121

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 35% of days. Sticky, muggy-or-worse air turns up on roughly 27% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
116132026251
217132025231
318142025211
419142125201
520152125181
621152224161
722162224152
823172223142
924172222131
1025182221121
1127182221111
1228192220101
133019221991
143220211881
153320211871
163521211761
173721201651
183921201540
194121201540
204320201430
214420191430
224520191330
234719181330
244819181320
254919171320
265018171320
275118161320
285118161320
295317151320
305317151320
315616141220

Wind in October

Winds average 6 mph in October.

Across October, daily wind ranges from about 6 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over October. Sunrise moves from 6:19 AM to 6:43 AM, and sunset from 6:00 PM to 5:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:196:00
211.66:205:59
311.66:215:57
411.66:225:56
511.56:225:55
611.56:235:53
711.56:245:52
811.46:255:51
911.46:255:49
1011.46:265:48
1111.36:275:47
1211.36:285:46
1311.36:285:44
1411.26:295:43
1511.26:305:42
1611.26:315:41
1711.16:325:40
1811.16:325:38
1911.16:335:37
2011.06:345:36
2111.06:355:35
2211.06:365:34
2310.96:365:33
2410.96:375:32
2510.96:385:31
2610.86:395:30
2710.86:405:29
2810.86:415:28
2910.86:425:27
3010.76:435:26
3110.76:435:25

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.97 kWh/m².

For context, solar energy here swings from a low near 2.56 kWh/m² to a high of 6.29 kWh/m² in May across the year — October's 3.97 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.0Bright
104.0Bright
114.0Bright
124.0Bright
134.0Bright
144.0Moderate
154.0Moderate
164.0Moderate
174.0Moderate
184.0Moderate
193.9Moderate
203.9Moderate
213.9Moderate
223.9Moderate
233.9Moderate
243.8Moderate
253.8Moderate
263.8Moderate
273.8Moderate
283.7Moderate
293.7Moderate
303.6Moderate
313.6Moderate
Planning a trip in October

Hazard calendar for Summerville

In seasonPeak

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

Summerville 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 October a good time to visit Summerville?

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

7.3
Sightseeing
1st-best month of the year
6.3
Beach & pool
3rd-best month of the year

October is one of the better times to visit Summerville for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Summerville in October

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

In October, Summerville sees daytime highs around 76°F and nights near 57°F. Worth packing: light clothes. About 8 days see rain.

light clothes

Sea temperature near Summerville in October

The nearest coast averages about 75°F in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 27 mi away) is warmest in August at about 83°F and coldest in February near 59°F.

It's comfortable for a long swim from Apr 25 to Nov 14 — about 6.7 months when the water holds above 68°F.

60°70°80°90°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan60Cool
Feb59Cool
Mar61Cool
Apr66Cool
May73Refreshing
Jun80Warm
Jul83Tropical
Aug83Tropical
Sep81Warm
Oct75Refreshing
Nov67Cool
Dec63Cool

UV index in Summerville in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Summerville peaks around July 13 at about 9 (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 — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 13UV 9Dec 19UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7Very high
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec3Moderate

Air quality in Summerville in October

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Summerville is worst in March — around 20 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMar 1819 µg/m³Dec 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb12Good
Mar20Moderate
Apr14Moderate
May13Moderate
Jun16Moderate
Jul17Moderate
Aug15Moderate
Sep11Good
Oct8Good
Nov8Good
Dec7Good
Location & terrain

Where is Summerville?

Summerville sits at 33.0°N, 80.2°W, 89 ft above sea level, in United States. The nearest listed city is Goose Creek, 8.7 mi away.

Topography around Summerville

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

Within 2 miles, the terrain around Summerville has only modest variations in elevation — a maximum elevation change of 115 ft around an average of 85 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 161 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 299 ft.

The land around Summerville is covered by trees (74%) within 2 miles, trees (79%) within 10 miles, and trees (62%) and water (24%) within 50 miles.

2 miles
115 ft
10 miles
161 ft
50 miles
299 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
October weather nearby: Goose Creek 8.7 mi · Hanahan 11 mi · North Charleston 16 mi · Charleston 22 mi · Mount Pleasant 24 mi · Sumter 63 mi · Hilton Head 65 mi · Hilton Head Island 66 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 Summerville (33.0185°, -80.1757°, elevation 89 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).