South Suffolk weather in July

In July, South Suffolk sees average daytime highs of 88°F and overnight lows near 72°F, with 5.0 in of rain across 14.9 wet days and about 14.3 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 88°F through the month. The sky is clear or mostly clear about 28% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 14 h 30 min at the start of July to 13 h 54 min by month's end. Set against the rest of the year, July is South Suffolk's 11th-clearest and 11th-windiest month. For the whole year in context, see South Suffolk's year-round climate.

Daytime high
88°
1st warmest
Overnight low
72°
12th coldest
Rainfall
5.0 in
14.9 wet days
Daylight
14 h 18 min
5:03 AM – 7:20 PM
Cloud cover
60%
11th clearest
Wind
6 mph
11th windiest
Solar energy
6.09 kWh/m²
Travel score
4.0
out of 10

South Suffolk is human settlement in United States of America.

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 88°F through the month.

A typical July day in South Suffolk reaches about 88°F in the afternoon and slips back to 72°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 81°F and 94°F. Set against its neighbours, July runs about 3°F warmer than June and about 2°F warmer than August.

60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18771
28771
38771
48771
58771
68771
78871
88871
98871
108872
118872
128872
138872
148872
158872
168872
178872
188872
198872
208872
218872
228872
238872
248872
258872
268872
278772
288772
298772
308772
318772

How July really feels in South Suffolk

Once humidity and wind are folded in, July averages 31 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
31
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

South Suffolk weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan50° / 33°3.49.31.39.82.4
Feb53° / 35°3.18.81.210.63.0
Mar60° / 41°3.910.60.511.74.8
Apr69° / 50°3.49.5012.96.5
May77° / 59°3.810.8013.96.7
Jun84° / 67°4.111.7014.55.3
Jul88° / 72°5.014.9014.34.0
Aug86° / 70°4.713.1013.44.7
Sep80° / 65°4.810.9012.26.3
Oct71° / 54°3.77.7011.17.1
Nov61° / 43°3.48.40.1105.5
Dec54° / 37°3.59.50.69.53.3

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 20% of July, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45050
55149
65149
75149
85050
95050
105050
115050
125050
135050
144951
154852
164852
174753
184654
194654
204555
214555
224555
234555
244456
254555
264555
274654
284555
294555
304555
314555

Chance of precipitation in July

Any precipitation

South Suffolk gets around 5.0 in of rain over 14.9 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 47% and peaks near 51% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
143
244
344
444
544
644
744
844
944
1044
1145
1245
1346
1446
1547
1648
1748
1849
1950
2050
2150
2251
2351
2451
2551
2651
2750
2850
2949
3049
3148

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 84% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1181528481
2171527491
3171526501
4171426502
5171426502
6061425532
7061425532
8061425532
9051425533
10051325543
11051324553
12041324554
13041324554
14031224565
15031224565
16031124575
17031124566
18021024586
19021024577
20021024577
2102924587
2202924587
2302923597
2402923597
2502923597
2602923597
2702923597
2802924596
2902924596
30031024585
31031025575

Wind in July

Winds average 6 mph in July.

Across July, 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 July

DaylightNight

Daylight runs from about 14 h 30 min at the start of July to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over July. Sunrise moves from 4:55 AM to 5:15 AM, and sunset from 7:24 PM to 7:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:557:24
214.54:567:24
314.54:567:24
414.54:567:24
514.44:577:24
614.44:577:24
714.44:587:24
814.44:597:23
914.44:597:23
1014.45:007:23
1114.45:007:22
1214.45:017:22
1314.35:027:22
1414.35:027:21
1514.35:037:21
1614.35:037:20
1714.35:047:20
1814.25:057:19
1914.25:067:19
2014.25:067:18
2114.25:077:18
2214.25:087:17
2314.15:087:16
2414.15:097:16
2514.15:107:15
2614.15:117:14
2714.05:127:14
2814.05:127:13
2914.05:137:12
3014.05:147:11
3113.95:157:10

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.09 kWh/m².

For context, solar energy here swings from a low near 2.17 kWh/m² to a high of 6.28 kWh/m² in June across the year — July's 6.09 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.1Intense
176.1Intense
186.1Intense
196.0Intense
206.0Bright
216.0Bright
225.9Bright
235.9Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in July

Hazard calendar for South Suffolk

In seasonPeak

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

South Suffolk 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 July a good time to visit South Suffolk?

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

4.0
Sightseeing
9th-best month of the year
6.0
Beach & pool
4th-best month of the year

July is a reasonable time to visit South Suffolk for sightseeing.

What to pack for South Suffolk in July

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

In July, South Suffolk sees daytime highs around 88°F and nights near 72°F. Pack light clothes, rain gear and sun protection. About 15 days see rain.

light clothesrain gearsun protection

Sea temperature near South Suffolk in July

The nearest coast averages about 78°F in July — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 38 mi away) is warmest in August at about 79°F and coldest in February near 41°F.

It's comfortable for a long swim from Jun 3 to Oct 14 — about 4.4 months when the water holds above 68°F.

40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan44Bracing
Feb41Bracing
Mar45Bracing
Apr54Bracing
May63Cool
Jun72Refreshing
Jul78Warm
Aug79Warm
Sep76Warm
Oct68Cool
Nov57Bracing
Dec49Bracing

UV index in South Suffolk in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in South Suffolk peaks around July 12 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 12UV 9Dec 19UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug7Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Moderate

Air quality in South Suffolk in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in South Suffolk is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1216 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar11Good
Apr12Good
May13Moderate
Jun16Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is South Suffolk?

South Suffolk sits at 36.7°N, 76.6°W, 52 ft above sea level, in United States. The nearest listed city is Suffolk, 0.6 mi away.

Topography around South Suffolk

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

Within 2 miles, the terrain around South Suffolk has only modest variations in elevation — a maximum elevation change of 125 ft around an average of 52 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 167 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 341 ft.

The land around South Suffolk is covered by trees (58%) within 2 miles, trees (71%) within 10 miles, and trees (53%) and water (24%) within 50 miles.

2 miles
125 ft
10 miles
167 ft
50 miles
341 ft
treesgrasslandcroplandartificial surfaceswaterwetland
July weather nearby: Suffolk 0.6 mi · Portsmouth Heights 14 mi · Portsmouth 18 mi · Chesapeake 19 mi · Norfolk 19 mi · Newport News 21 mi · Hampton 25 mi · East Hampton 26 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 South Suffolk (36.7171°, -76.5902°, elevation 52 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).