Sandusky weather in September

In September, Sandusky sees average daytime highs of 71°F and overnight lows near 61°F, with 2.9 in of rain across 9.3 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 75°F in the first days to 67°F by the end. The sky is clear or mostly clear about 40% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Sandusky's 2nd-clearest and 9th-windiest month. For the whole year in context, see Sandusky's year-round climate.

Daytime high
71°
4th warmest
Overnight low
61°
9th coldest
Rainfall
2.9 in
9.3 wet days
Daylight
12 h 18 min
6:17 AM – 6:33 PM
Cloud cover
51%
2nd clearest
Wind
9 mph
9th windiest
Solar energy
4.51 kWh/m²
Travel score
6.8
out of 10

Sandusky is seat of Erie County, Ohio, USA.

Density
444/km²
people per km²
Founded
1818

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 75°F in the first days to 67°F by the end.

A typical September day in Sandusky reaches about 71°F in the afternoon and slips back to 61°F overnight — a 10°F spread between the day's warmth and the night's chill. On most days the high lands between 63°F and 80°F. Set against its neighbours, September runs about 6°F cooler than August and about 12°F warmer than October.

40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
17666
27666
37665
47565
57565
67565
77464
87464
97464
107363
117363
127362
137362
147262
157261
167161
177161
187160
197060
207059
216959
226959
236958
246858
256858
266857
276757
286756
296656
306656

How September really feels in Sandusky

Once humidity and wind are folded in, September 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

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

Sandusky weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan33° / 22°3.01179.30.0
Feb34° / 23°2.49.15.410.30.0
Mar42° / 31°3.210.93.911.70.4
Apr55° / 44°4.013113.13.2
May67° / 56°3.913014.35.6
Jun76° / 66°4.012.2014.96.5
Jul80° / 70°3.511.6014.76.4
Aug78° / 68°3.411.2013.76.7
Sep71° / 61°2.99.3012.36.8
Oct60° / 49°3.110.6010.94.7
Nov48° / 39°3.210.11.49.71.6
Dec38° / 29°3.010.34.69.10.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 44%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16337
26238
36238
46238
56238
66139
76139
86040
96040
105842
115842
125743
135644
145545
155446
165446
175347
185347
195347
205347
215347
225347
235347
245347
255248
265248
275248
285248
295248
305248

Chance of precipitation in September

Any precipitation

Sandusky gets around 2.9 in of rain over 9.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 32% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
132
232
332
432
532
631
731
831
930
1030
1130
1230
1330
1430
1530
1630
1730
1830
1930
2030
2131
2231
2332
2433
2533
2634
2735
2835
2935
3035

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 32% of days. Sticky, muggy-or-worse air turns up on roughly 20% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1921283210
2922293010
3112229299
4122329288
5132429268
6152529257
7162529236
8182629225
9192628215
10212728204
11222728194
12242727183
13262826183
14272826172
15292825162
16312924151
17332923151
18352922141
19372821131
20392820121
21412819121
22432718110
23452717100
24482616100
2550261590
2651251590
2754241480
2856231380
2958221370
3060211270

Wind in September

Winds average 9 mph in September.

Across September, daily wind ranges from about 9 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
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
1710light breeze
1810light breeze
1910light breeze
2010light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 6:01 AM to 6:32 AM, and sunset from 7:00 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:017:00
212.96:026:58
312.96:036:56
412.86:046:55
512.86:056:53
612.76:076:51
712.76:086:49
812.66:096:48
912.66:106:46
1012.66:116:44
1112.56:126:42
1212.56:136:41
1312.46:146:39
1412.46:156:37
1512.36:166:35
1612.36:176:33
1712.26:186:32
1812.26:196:30
1912.16:206:28
2012.16:216:26
2112.06:226:24
2212.06:236:23
2311.96:246:21
2411.96:256:19
2511.86:266:17
2611.86:286:15
2711.86:296:14
2811.76:306:12
2911.76:316:10
3011.66:326:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.51 kWh/m².

For context, solar energy here swings from a low near 1.53 kWh/m² to a high of 6.55 kWh/m² in June across the year — September's 4.51 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.0Bright
45.0Bright
54.9Bright
64.9Bright
74.9Bright
84.8Bright
94.8Bright
104.7Bright
114.7Bright
124.7Bright
134.6Bright
144.6Bright
154.5Bright
164.5Bright
174.5Bright
184.4Bright
194.4Bright
204.3Bright
214.3Bright
224.2Bright
234.2Bright
244.1Bright
254.1Bright
264.0Bright
274.0Moderate
283.9Moderate
293.9Moderate
303.8Moderate
Planning a trip in September

Is September a good time to visit Sandusky?

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

6.8
Sightseeing
1st-best month of the year
4.6
Beach & pool
4th-best month of the year

September is a reasonable time to visit Sandusky for sightseeing.

What to pack for Sandusky in September

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

In September, Sandusky sees daytime highs around 71°F and nights near 61°F. Worth packing: rain gear and sun protection. About 9 days see rain.

rain gearsun protection

Sea temperature near Sandusky in September

The nearest coast averages about 71°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 13 mi away) is warmest in August at about 75°F and coldest in February near 33°F.

It's comfortable for a long swim from Jun 21 to Sep 23 — about 3.1 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan34Bracing
Feb33Bracing
Mar35Bracing
Apr42Bracing
May54Bracing
Jun67Cool
Jul75Refreshing
Aug75Warm
Sep71Refreshing
Oct60Cool
Nov48Bracing
Dec39Bracing

UV index in Sandusky in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Sandusky peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 19UV 9Dec 20UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr6High
May7Very high
Jun9Very high
Jul8Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Sandusky in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Sandusky is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1016 µg/m³Oct 248 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar13Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is Sandusky?

Sandusky sits at 41.4°N, 82.7°W, 594 ft above sea level, in United States. The nearest listed city is Norwalk, 15 mi away.

Topography around Sandusky

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

Within 2 miles, the terrain around Sandusky has only modest variations in elevation — a maximum elevation change of 82 ft around an average of 581 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 341 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,148 ft.

The land around Sandusky is covered by water (38%) and artificial surfaces (29%) within 2 miles, water (48%) and cropland (25%) within 10 miles, and cropland (37%) and water (37%) within 50 miles.

2 miles
82 ft
10 miles
341 ft
50 miles
1,148 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Norwalk 15 mi · Fremont 22 mi · Lorain 27 mi · Elyria 32 mi · Tiffin 34 mi · Avon 35 mi · Avon Lake 35 mi · Avon Center 35 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 Sandusky (41.4489°, -82.708°, elevation 594 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. 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).