Sumter weather in April

In April, Sumter sees average daytime highs of 76°F and overnight lows near 54°F, with 3.4 in of rain across 8 wet days and about 12.8 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 72°F in the first days to 78°F by the end. The sky is clear or mostly clear about 38% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of April to 13 h 18 min by month's end. Set against the rest of the year, April is Sumter's 3rd-clearest and 1st-windiest month. For the whole year in context, see Sumter's year-round climate.

Daytime high
76°
6th warmest
Overnight low
54°
6th coldest
Rainfall
3.4 in
8 wet days
Daylight
12 h 48 min
5:56 AM – 6:47 PM
Cloud cover
52%
3rd clearest
Wind
9 mph
1st windiest
Solar energy
5.75 kWh/m²
Travel score
7.2
out of 10

Sumter is city in and county seat of Sumter County, South Carolina, United States.

Density
491/km²
people per km²
Founded
1845

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 72°F in the first days to 78°F by the end.

A typical April day in Sumter reaches about 76°F in the afternoon and slips back to 54°F overnight — a 21°F spread between the day's warmth and the night's chill. On most days the high lands between 65°F and 86°F. Set against its neighbours, April runs about 8°F warmer than March and about 7°F cooler than May.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17251
27251
37251
47351
57352
67352
77452
87452
97453
107453
117553
127553
137554
147554
157654
167655
177655
187655
197655
207755
217756
227756
237756
247856
257857
267857
277857
287858
297858
307958

How April really feels in Sumter

Once humidity and wind are folded in, April 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

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

Sumter weather by month

How April compares with the rest of the year at a glance. April is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan56° / 37°3.58.90.5104.1
Feb60° / 40°3.38.60.310.74.9
Mar67° / 46°3.49.40.111.76.4
Apr76° / 54°3.48012.87.2
May82° / 63°3.19.5013.76.2
Jun88° / 71°4.213.2014.24.1
Jul91° / 74°4.715.50143.2
Aug89° / 73°4.714.5013.33.7
Sep84° / 67°4.210012.25.6
Oct75° / 56°3.37.6011.17.4
Nov66° / 45°2.87.2010.26.6
Dec59° / 40°3.78.60.19.84.7

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 16% of April, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15248
25248
35248
45248
55248
65248
75248
85347
95347
105347
115347
125347
135347
145347
155347
165347
175347
185347
195446
205446
215446
225545
235545
245545
255545
265644
275644
285644
295644
305743

Chance of precipitation in April

Any precipitation

Sumter gets around 3.4 in of rain over 8 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 27% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
130
230
330
430
530
629
729
828
928
1028
1127
1227
1327
1426
1526
1626
1726
1826
1926
2026
2126
2226
2326
2426
2526
2627
2727
2828
2928
3028

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 64% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1761491
2761491
3751591
47415101
57415101
67216111
77216111
87017112
96917122
106818122
116818122
126519133
136519133
146420133
156420133
166321133
176221134
186122134
196122134
206122134
215923135
225923135
235923135
245823136
255823136
265623147
275523148
285423158
295323159
305322169

Wind in April

Winds average 9 mph in April, the windiest month of the year.

Across April, 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.

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
179light breeze
189light breeze
199light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over April. Sunrise moves from 6:17 AM to 5:40 AM, and sunset from 6:35 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:176:35
212.46:156:36
312.46:146:37
412.46:126:38
512.56:116:39
612.56:106:39
712.56:086:40
812.66:076:41
912.66:066:42
1012.66:046:42
1112.76:036:43
1212.76:016:44
1312.76:006:45
1412.85:596:45
1512.85:586:46
1612.85:566:47
1712.95:556:48
1812.95:546:48
1912.95:526:49
2013.05:516:50
2113.05:506:51
2213.05:496:52
2313.15:486:52
2413.15:466:53
2513.15:456:54
2613.25:446:55
2713.25:436:55
2813.25:426:56
2913.35:416:57
3013.35:406:58

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.75 kWh/m².

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 6.2 kWh/m² in June across the year — April's 5.75 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.3Bright
35.3Bright
45.4Bright
55.4Bright
65.5Bright
75.5Bright
85.5Bright
95.6Bright
105.6Bright
115.6Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
276.0Bright
286.0Bright
296.0Bright
306.0Intense
Planning a trip in April

Is April a good time to visit Sumter?

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

7.2
Sightseeing
2nd-best month of the year
6.1
Beach & pool
4th-best month of the year

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

What to pack for Sumter in April

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

In April, Sumter sees daytime highs around 76°F and nights near 54°F. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Sumter in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sumter peaks around July 13 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 20UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep7Very high
Oct5Moderate
Nov4Moderate
Dec3Moderate

Air quality in Sumter in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Sumter is worst in March — around 18 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1518 µg/m³Dec 178 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar18Moderate
Apr13Moderate
May13Moderate
Jun17Moderate
Jul18Moderate
Aug16Moderate
Sep12Good
Oct9Good
Nov8Good
Dec8Good
Location & terrain

Where is Sumter?

Sumter sits at 33.9°N, 80.3°W, 171 ft above sea level, in United States. The nearest listed city is Florence, 38 mi away.

Topography around Sumter

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

Within 2 miles, the terrain around Sumter has only modest variations in elevation — a maximum elevation change of 98 ft around an average of 171 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 305 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,079 ft.

The land around Sumter is covered by trees (63%) and artificial surfaces (25%) within 2 miles, trees (64%) within 10 miles, and trees (75%) within 50 miles.

2 miles
98 ft
10 miles
305 ft
50 miles
1,079 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Florence 38 mi · Columbia 40 mi · West Columbia 42 mi · Saint Andrews 44 mi · Seven Oaks 47 mi · Lexington 52 mi · Summerville 63 mi · Goose Creek 67 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 Sumter (33.9204°, -80.3415°, elevation 171 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. 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).