East Setauket weather in July

In July, East Setauket sees average daytime highs of 78°F and overnight lows near 70°F, with 3.2 in of rain across 9.2 wet days and about 14.6 hours of daylight. It is the 1st-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 78°F through the month. The sky is clear or mostly clear about 34% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 54 min at the start of July to 14 h 12 min by month's end. Set against the rest of the year, July is East Setauket's 4th-clearest and 11th-windiest month. For the whole year in context, see East Setauket's year-round climate.

Daytime high
78°
1st warmest
Overnight low
70°
12th coldest
Rainfall
3.2 in
9.2 wet days
Daylight
14 h 42 min
4:38 AM – 7:18 PM
Cloud cover
55%
4th clearest
Wind
8 mph
11th windiest
Solar energy
6.31 kWh/m²
Travel score
6.9
out of 10

East Setauket is human settlement in Suffolk County, New York, United States of America.

Density
1,080/km²
people per km²

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 78°F through the month.

A typical July day in East Setauket reaches about 78°F in the afternoon and slips back to 70°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 84°F. Set against its neighbours, July runs about 6°F warmer than June and on par with August.

60°70°80°151015202531
Avg high (°F)Avg low (°F)
17768
27769
37769
47769
57869
67869
77870
87870
97870
107870
117870
127870
137970
147971
157971
167971
177971
187971
197971
207971
217971
227971
237971
247971
257971
267971
277971
287971
297971
307971
317971

How July really feels in East Setauket

Once humidity and wind are folded in, July 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

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

East Setauket weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan38° / 29°3.79.74.29.40.0
Feb38° / 29°3.49.13.810.40.0
Mar44° / 35°4.610.63.311.70.7
Apr53° / 44°3.910.70.413.13.0
May63° / 53°3.510.8014.35.3
Jun72° / 64°3.69.7014.96.7
Jul78° / 70°3.29.2014.66.9
Aug78° / 70°4.09.5013.67.0
Sep72° / 64°3.89.1012.36.9
Oct62° / 54°4.49.40.110.95.5
Nov53° / 44°3.79.10.39.73.0
Dec44° / 35°4.810.62.49.10.7

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25347
35446
45446
55545
65545
75545
85545
95743
105743
115743
125743
135743
145743
155743
165644
175644
185644
195545
205545
215446
225545
235446
245446
255446
265446
275446
285446
295446
305644
315644

Chance of precipitation in July

Any precipitation

East Setauket gets around 3.2 in of rain over 9.2 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
229
329
429
529
628
728
828
928
1028
1128
1228
1328
1428
1528
1629
1729
1830
1930
2031
2131
2231
2332
2432
2532
2632
2732
2832
2932
3032
3132

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 60% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
15143239100
25143239110
35143139120
45133138130
54133038140
64133038150
74133038160
84132938170
94122838180
104122837190
113122737200
123122737210
133122637220
143122537230
153112536241
162112436251
172112436261
182112336271
192112336271
202112236281
212112236281
221112137291
231112137291
241112137301
251112137301
261112136301
271112136301
281112136301
291112136301
302112235301
312112235301

Wind in July

Winds average 8 mph in July.

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

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 54 min at the start of July to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over July. Sunrise moves from 4:28 AM to 4:51 AM, and sunset from 7:23 PM to 7:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.94:287:23
214.94:297:23
314.94:297:23
414.94:307:23
514.94:317:22
614.94:317:22
714.84:327:22
814.84:327:22
914.84:337:21
1014.84:347:21
1114.84:347:21
1214.84:357:20
1314.74:367:20
1414.74:367:19
1514.74:377:19
1614.74:387:18
1714.64:397:18
1814.64:397:17
1914.64:407:16
2014.64:417:16
2114.54:427:15
2214.54:437:14
2314.54:447:13
2414.54:457:13
2514.44:467:12
2614.44:467:11
2714.44:477:10
2814.34:487:09
2914.34:497:08
3014.34:507:07
3114.24:517:06

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.31 kWh/m².

For context, solar energy here swings from a low near 1.74 kWh/m² to a high of 6.34 kWh/m² in June across the year — July's 6.31 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.4Intense
146.4Intense
156.4Intense
166.3Intense
176.3Intense
186.3Intense
196.3Intense
206.2Intense
216.2Intense
226.2Intense
236.1Intense
246.1Intense
256.1Intense
266.0Intense
276.0Intense
286.0Intense
296.0Bright
306.0Bright
316.0Bright
Planning a trip in July

Hazard calendar for East Setauket

In seasonPeak

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

East Setauket 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 East Setauket?

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

6.9
Sightseeing
2nd-best month of the year
6.5
Beach & pool
1st-best month of the year

July is a reasonable time to visit East Setauket for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for East Setauket in July

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

In July, East Setauket sees daytime highs around 78°F and nights near 70°F. Pack sun protection. Worth having: light clothes and rain gear. About 9 days see rain.

sun protectionlight clothesrain gear

Sea temperature near East Setauket in July

The nearest coast averages about 72°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 12 mi away) is warmest in August at about 74°F and coldest in February near 35°F.

It's comfortable for a long swim from Jul 1 to Sep 30 — about 3 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan39Bracing
Feb35Bracing
Mar37Bracing
Apr44Bracing
May54Bracing
Jun65Cool
Jul72Refreshing
Aug74Refreshing
Sep71Refreshing
Oct64Cool
Nov55Bracing
Dec46Bracing

UV index in East Setauket in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in East Setauket peaks around July 11 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 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 highHighModerateLowJul 11UV 8Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in East Setauket 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 East Setauket is worst in July — around 20 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1120 µg/m³Nov 188 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar14Moderate
Apr16Moderate
May19Moderate
Jun20Moderate
Jul20Moderate
Aug17Moderate
Sep13Moderate
Oct9Good
Nov8Good
Dec9Good
Location & terrain

Where is East Setauket?

East Setauket sits at 40.9°N, 73.1°W, 66 ft above sea level, in United States. The nearest listed city is Setauket-East Setauket, 0.6 mi away.

Topography around East Setauket

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

Within 2 miles, the terrain around East Setauket has only modest variations in elevation — a maximum elevation change of 230 ft around an average of 82 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 338 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,457 ft.

The land around East Setauket is covered by trees (68%) within 2 miles, water (50%) and trees (39%) within 10 miles, and water (47%) and trees (41%) within 50 miles.

2 miles
230 ft
10 miles
338 ft
50 miles
1,457 ft
treesgrasslandartificial surfaceswaterwetland
July weather nearby: Setauket-East Setauket 0.6 mi · Centereach 5.6 mi · Selden 6.2 mi · Coram 7.5 mi · Lake Ronkonkoma 7.5 mi · Smithtown 7.5 mi · Ronkonkoma 8.7 mi · Farmingville 8.7 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 East Setauket (40.9415°, -73.1059°, elevation 66 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).