Sayville weather in October

In October, Sayville sees average daytime highs of 62°F and overnight lows near 55°F, with 4.3 in of rain across 8.9 wet days and about 10.9 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 66°F in the first days to 58°F by the end. The sky is clear or mostly clear about 41% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 18 min by month's end. Set against the rest of the year, October is Sayville's 2nd-clearest and 6th-windiest month. For the whole year in context, see Sayville's year-round climate.

Daytime high
62°
5th warmest
Overnight low
55°
8th coldest
Rainfall
4.3 in
8.9 wet days
Daylight
10 h 54 min
6:11 AM – 5:04 PM
Cloud cover
52%
2nd clearest
Wind
12 mph
6th windiest
Solar energy
3.25 kWh/m²
Travel score
5.5
out of 10

Sayville is census-designated place in Suffolk County, New York, United States.

Density
1,212/km²
people per km²

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 66°F in the first days to 58°F by the end.

A typical October day in Sayville reaches about 62°F in the afternoon and slips back to 55°F overnight — a 7°F spread between the day's warmth and the night's chill. On most days the high lands between 55°F and 68°F. Set against its neighbours, October runs about 9°F cooler than September and about 9°F warmer than November.

40°50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
16760
26660
36659
46659
56559
66558
76558
86558
96457
106457
116456
126356
136356
146356
156255
166255
176255
186154
196154
206153
216053
226053
236053
246052
255952
265951
275951
285851
295851
305850
315750

How October really feels in Sayville

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.

Sayville weather by month

How October compares with the rest of the year at a glance. October is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan39° / 31°3.79.949.40.0
Feb39° / 30°3.49.33.710.40.0
Mar44° / 36°4.410.22.811.70.8
Apr52° / 44°3.610.50.413.12.7
May61° / 53°3.310.2014.24.9
Jun70° / 64°3.49.6014.96.6
Jul77° / 71°3.28.8014.67.2
Aug76° / 70°3.89.4013.67.2
Sep71° / 65°3.78.9012.36.9
Oct62° / 55°4.38.9010.95.5
Nov53° / 45°3.68.80.39.73.1
Dec45° / 37°4.610.32.39.11.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35644
45644
55644
65743
75743
85743
95842
105842
115842
125842
135842
145842
155743
165743
175743
185743
195644
205644
215644
225545
235545
245446
255446
265248
275248
285248
295248
305149
315050

Chance of precipitation in October

Any precipitation

Sayville gets around 4.3 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 30% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
131
231
331
431
531
630
730
830
930
1030
1130
1230
1330
1430
1530
1629
1729
1829
1929
2029
2129
2229
2329
2429
2529
2629
2729
2829
2929
3029
3129

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 70% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
147221812
249221711
350231710
45223169
55423158
65623147
75723137
85823136
96122125
106122125
116421114
126620104
136720103
14701992
15701992
16721882
17741781
18761671
19771571
20781471
21791461
22811360
23821260
24831250
25841150
26841150
27851140
28861040
29861040
30871030
31871030

Wind in October

Winds average 12 mph in October.

Across October, daily wind ranges from about 11 mph on the calmest days to 13 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
111light breeze
211light breeze
311light breeze
411light breeze
511light breeze
611light breeze
711light breeze
811light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212breezy
2312breezy
2413breezy
2513breezy
2613breezy
2713breezy
2813breezy
2913breezy
3013breezy
3113breezy

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over October. Sunrise moves from 5:54 AM to 6:28 AM, and sunset from 5:28 PM to 4:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:545:28
211.55:555:27
311.55:565:25
411.45:575:23
511.45:585:22
611.35:595:20
711.36:015:18
811.36:025:17
911.26:035:15
1011.26:045:14
1111.16:055:12
1211.16:065:10
1311.06:075:09
1411.06:085:07
1510.96:095:06
1610.96:115:04
1710.96:125:03
1810.86:135:01
1910.86:145:00
2010.76:154:58
2110.76:164:57
2210.66:174:55
2310.66:194:54
2410.66:204:53
2510.56:214:51
2610.56:224:50
2710.46:234:49
2810.46:244:47
2910.36:264:46
3010.36:274:45
3110.36:284:44

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.25 kWh/m².

For context, solar energy here swings from a low near 1.75 kWh/m² to a high of 6.48 kWh/m² in June across the year — October's 3.25 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.7Moderate
43.7Moderate
53.6Moderate
63.6Moderate
73.6Moderate
83.5Moderate
93.5Moderate
103.5Moderate
113.4Moderate
123.4Moderate
133.4Moderate
143.3Moderate
153.3Moderate
163.3Moderate
173.2Moderate
183.2Moderate
193.1Moderate
203.1Moderate
213.1Moderate
223.0Moderate
233.0Moderate
243.0Moderate
252.9Moderate
262.9Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.7Moderate
312.7Moderate
Planning a trip in October

Hazard calendar for Sayville

In seasonPeak

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

Sayville 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 October a good time to visit Sayville?

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

5.5
Sightseeing
5th-best month of the year
1.3
Beach & pool
5th-best month of the year

October is a reasonable time to visit Sayville for sightseeing.

What to pack for Sayville in October

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

In October, Sayville sees daytime highs around 62°F and nights near 55°F. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Sayville in October

The nearest coast averages about 63°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 8 mi away) is warmest in August at about 73°F and coldest in February near 40°F.

It's comfortable for a long swim from Jul 3 to Sep 23 — about 2.7 months when the water holds above 68°F.

40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan43Bracing
Feb40Bracing
Mar40Bracing
Apr45Bracing
May54Bracing
Jun64Cool
Jul72Refreshing
Aug73Refreshing
Sep70Refreshing
Oct63Cool
Nov55Bracing
Dec49Bracing

UV index in Sayville in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sayville 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 Sayville 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 Sayville is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1016 µg/m³Nov 178 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar14Moderate
Apr15Moderate
May16Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep11Good
Oct9Good
Nov8Good
Dec8Good
Location & terrain

Where is Sayville?

Sayville sits at 40.7°N, 73.1°W, 20 ft above sea level, in United States. The nearest listed city is East Patchogue, 5.0 mi away.

Topography around Sayville

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

Within 2 miles, the terrain around Sayville has only modest variations in elevation — a maximum elevation change of 72 ft around an average of 23 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 335 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,014 ft.

The land around Sayville is covered by trees (41%) and water (25%) within 2 miles, water (46%) and trees (33%) within 10 miles, and water (57%) and trees (31%) within 50 miles.

2 miles
72 ft
10 miles
335 ft
50 miles
1,014 ft
treesgrasslandartificial surfacesbare terrainwaterwetland
October weather nearby: East Patchogue 5.0 mi · Holbrook 5.6 mi · Holtsville 5.6 mi · Ronkonkoma 6.8 mi · Islip 6.8 mi · Medford 6.8 mi · Farmingville 6.8 mi · Central Islip 7.5 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 Sayville (40.7359°, -73.0821°, elevation 20 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).