St. Marys weather in October

In October, St. Marys sees average daytime highs of 78°F and overnight lows near 66°F, with 3.2 in of rain across 8.9 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 75°F by the end. The sky is clear or mostly clear about 43% of the time in October, and the air most often feels muggy.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 48 min by month's end. Set against the rest of the year, October is St. Marys's 3rd-clearest and 6th-windiest month. For the whole year in context, see St. Marys's year-round climate.

Daytime high
78°
6th warmest
Overnight low
66°
7th coldest
Rainfall
3.2 in
8.9 wet days
Daylight
11 h 12 min
6:34 AM – 5:48 PM
Cloud cover
49%
3rd clearest
Wind
9 mph
6th windiest
Solar energy
4.03 kWh/m²
Travel score
7.1
out of 10

St. Marys is city in Camden County, Georgia, USA.

Density
279/km²
people per km²
Founded
1792

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 75°F by the end.

A typical October day in St. Marys reaches about 78°F in the afternoon and slips back to 66°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 83°F. Set against its neighbours, October runs about 6°F cooler than September and about 8°F warmer than November.

50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
18171
28171
38070
48070
58070
68070
78069
88069
97969
107968
117968
127968
137867
147867
157866
167866
177866
187765
197765
207765
217764
227664
237664
247663
257663
267563
277562
287562
297562
307461
317461

How October really feels in St. Marys

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.

St. Marys 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
Jan62° / 48°2.97.710.25.7
Feb65° / 50°2.57.210.96.2
Mar70° / 55°2.87.311.87.0
Apr75° / 61°2.36.912.77.5
May82° / 68°2.58.513.56.6
Jun86° / 74°5.117.5144.3
Jul88° / 76°4.618.213.83.7
Aug87° / 76°5.820.413.13.7
Sep83° / 74°5.415.512.25.0
Oct78° / 66°3.28.911.27.1
Nov70° / 57°1.86.110.47.2
Dec64° / 51°2.57.4106.3

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 17% of October, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25248
35248
45347
55446
65446
75446
85545
95743
105644
115743
125842
135941
146040
156139
166238
176337
186337
196337
206436
216436
226436
236535
246535
256634
266535
276535
286535
296436
306436
316238

Chance of precipitation in October

Any precipitation

St. Marys gets around 3.2 in of rain over 8.9 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 29% and peaks near 44% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
144
243
342
442
541
639
738
837
936
1034
1133
1231
1330
1428
1527
1626
1725
1824
1923
2022
2122
2221
2321
2420
2520
2620
2720
2820
2920
3020
3120

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the muggy band about 26% of days. Sticky, muggy-or-worse air turns up on roughly 50% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1461424474
2561525464
3571626443
4571627423
5681727393
6681828373
7791928352
8791929332
98102029312
108112029292
119112129272
1210122129262
1311122229241
1412132229221
1514142229201
1615142329191
1716152328171
1817152328160
1919162327150
2020162327140
2121162326130
2222162326120
2323172326110
2424172325110
2525172325100
2626172224100
2727182224100
282818222390
292918222290
303018212290
313118212190

Wind in October

Winds average 9 mph in October.

Across October, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
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
178light breeze
188light breeze
198light breeze
208light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over October. Sunrise moves from 6:24 AM to 6:46 AM, and sunset from 6:06 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:246:06
211.76:256:05
311.66:256:04
411.66:266:03
511.66:276:01
611.56:276:00
711.56:285:59
811.56:295:58
911.56:295:56
1011.46:305:55
1111.46:315:54
1211.46:315:53
1311.36:325:52
1411.36:335:51
1511.36:335:49
1611.26:345:48
1711.26:355:47
1811.26:365:46
1911.16:365:45
2011.16:375:44
2111.16:385:43
2211.16:385:42
2311.06:395:41
2411.06:405:40
2511.06:415:39
2610.96:425:38
2710.96:425:37
2810.96:435:36
2910.96:445:36
3010.86:455:35
3110.86:465:34

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.03 kWh/m².

For context, solar energy here swings from a low near 2.74 kWh/m² to a high of 6.45 kWh/m² in May across the year — October's 4.03 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.0Bright
194.0Bright
204.0Bright
214.0Bright
224.0Moderate
234.0Moderate
243.9Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.8Moderate
303.8Moderate
313.7Moderate
Planning a trip in October

Hazard calendar for St. Marys

In seasonPeak

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

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

St. Marys's rainy season runs June–October, when most of the year's rain falls.

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

Is October a good time to visit St. Marys?

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

7.1
Sightseeing
3rd-best month of the year
6.5
Beach & pool
2nd-best month of the year

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

What to pack for St. Marys in October

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

In October, St. Marys sees daytime highs around 78°F and nights near 66°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

Sea temperature near St. Marys in October

The nearest coast averages about 77°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 12 mi away) is warmest in August at about 83°F and coldest in February near 60°F.

It's comfortable for a long swim from Apr 15 to Nov 24 — about 7.4 months when the water holds above 68°F.

60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan61Cool
Feb60Cool
Mar63Cool
Apr68Refreshing
May75Refreshing
Jun80Warm
Jul82Warm
Aug83Tropical
Sep82Warm
Oct77Warm
Nov70Refreshing
Dec64Cool

UV index in St. Marys in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in St. Marys peaks around June 22 at about 10 (extreme) — 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 highExtremeVery highHighModerateJun 22UV 10Dec 19UV 3
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7High
Apr7High
May8Very high
Jun10Extreme
Jul10Very high
Aug9Very high
Sep8Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in St. Marys 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 St. Marys is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1618 µg/m³Dec 127 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb13Moderate
Mar14Moderate
Apr14Moderate
May15Moderate
Jun16Moderate
Jul18Moderate
Aug16Moderate
Sep11Good
Oct8Good
Nov7Good
Dec7Good
Location & terrain

Where is St. Marys?

St. Marys sits at 30.7°N, 81.5°W, 10 ft above sea level, in United States. The nearest listed city is Kingsland, 9.9 mi away.

Topography around St. Marys

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

Within 2 miles, the terrain around St. Marys has only modest variations in elevation — a maximum elevation change of 79 ft around an average of 10 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 125 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 295 ft.

The land around St. Marys is covered by wetland (41%), trees (25%) and water (23%) within 2 miles, trees (43%) and water (26%) within 10 miles, and trees (58%) and water (29%) within 50 miles.

2 miles
79 ft
10 miles
125 ft
50 miles
295 ft
treesgrasslandartificial surfaceswaterwetland
October weather nearby: Kingsland 9.9 mi · Jacksonville 29 mi · Brunswick 29 mi · Jacksonville Beach 32 mi · Ponte Vedra Beach 35 mi · Palm Valley 39 mi · Oakleaf Plantation 42 mi · Fruit Cove 43 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 St. Marys (30.7305°, -81.5465°, elevation 10 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).