Setauket-East Setauket weather in October
In October, Setauket-East Setauket sees average daytime highs of 62°F and overnight lows near 54°F, with 4.4 in of precipitation across 9.4 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 3rd-wettest month of the year here.
Highs ease over the month, from about 67°F in the first days to 58°F by the end. The sky is clear or mostly clear about 40% 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 Setauket-East Setauket's 1st-clearest and 6th-windiest month. For the whole year in context, see Setauket-East Setauket's year-round climate.
- Daytime high
- 62°
- 6th warmest
- Overnight low
- 54°
- 8th coldest
- Precipitation
- 4.4 in
- 9.4 wet days
- Daylight
- 10 h 54 min
- 6:11 AM – 5:04 PM
- Cloud cover
- 52%
- 1st clearest
- Wind
- 11 mph
- 6th windiest
- Solar energy
- 3.19 kWh/m²
- Travel score
- 5.5
- out of 10
Setauket-East Setauket is former census-designated place in Suffolk County, New York, United States.
- Density
- 641/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in October
Highs ease over the month, from about 67°F in the first days to 58°F by the end.
A typical October day in Setauket-East Setauket reaches about 62°F in the afternoon and slips back to 54°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 55°F and 69°F. Set against its neighbours, October runs about 10°F cooler than September and about 10°F warmer than November.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 67 | 67 | 67 | 66 | 66 | 66 | 65 | 65 | 65 | 64 | 64 | 64 | 63 | 63 | 63 | 62 | 62 | 62 | 61 | 61 | 61 | 60 | 60 | 60 | 59 | 59 | 59 | 58 | 58 | 58 | 57 |
| Avg low (°F) | 59 | 59 | 58 | 58 | 58 | 57 | 57 | 56 | 56 | 56 | 56 | 55 | 55 | 55 | 54 | 54 | 53 | 53 | 53 | 52 | 52 | 52 | 51 | 51 | 51 | 50 | 50 | 50 | 49 | 49 | 49 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 67 | 59 |
| 2 | 67 | 59 |
| 3 | 67 | 58 |
| 4 | 66 | 58 |
| 5 | 66 | 58 |
| 6 | 66 | 57 |
| 7 | 65 | 57 |
| 8 | 65 | 56 |
| 9 | 65 | 56 |
| 10 | 64 | 56 |
| 11 | 64 | 56 |
| 12 | 64 | 55 |
| 13 | 63 | 55 |
| 14 | 63 | 55 |
| 15 | 63 | 54 |
| 16 | 62 | 54 |
| 17 | 62 | 53 |
| 18 | 62 | 53 |
| 19 | 61 | 53 |
| 20 | 61 | 52 |
| 21 | 61 | 52 |
| 22 | 60 | 52 |
| 23 | 60 | 51 |
| 24 | 60 | 51 |
| 25 | 59 | 51 |
| 26 | 59 | 50 |
| 27 | 59 | 50 |
| 28 | 58 | 50 |
| 29 | 58 | 49 |
| 30 | 58 | 49 |
| 31 | 57 | 49 |
How October really feels in Setauket-East Setauket
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.
October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Setauket-East Setauket weather by month
How October compares with the rest of the year at a glance. October is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 38° / 29° | 3.7 | 9.7 | 4.2 | 9.4 | 0.0 |
| Feb | 38° / 29° | 3.4 | 9.1 | 3.8 | 10.4 | 0.0 |
| Mar | 44° / 35° | 4.6 | 10.6 | 3.3 | 11.7 | 0.7 |
| Apr | 53° / 44° | 3.9 | 10.7 | 0.4 | 13.1 | 3.0 |
| May | 63° / 53° | 3.5 | 10.8 | 0 | 14.3 | 5.3 |
| Jun | 72° / 64° | 3.6 | 9.7 | 0 | 14.9 | 6.7 |
| Jul | 78° / 70° | 3.2 | 9.2 | 0 | 14.6 | 6.9 |
| Aug | 78° / 70° | 4.0 | 9.5 | 0 | 13.6 | 7.0 |
| Sep | 72° / 64° | 3.8 | 9.1 | 0 | 12.3 | 6.9 |
| Oct | 62° / 54° | 4.4 | 9.4 | 0.1 | 10.9 | 5.5 |
| Nov | 53° / 44° | 3.7 | 9.1 | 0.3 | 9.7 | 3.0 |
| Dec | 44° / 35° | 4.8 | 10.6 | 2.4 | 9.1 | 0.7 |
Cloud cover in October
The sky is clear or mostly clear about 40% of the time in October, the clearest month of the year.
Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to cloud over as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 54 | 54 | 55 | 55 | 55 | 56 | 56 | 57 | 57 | 57 | 56 | 56 | 56 | 56 | 56 | 56 | 55 | 55 | 55 | 55 | 54 | 54 | 53 | 52 | 52 | 51 | 51 | 51 | 51 | 50 | 50 |
| Cloudier (%) | 46 | 46 | 45 | 45 | 45 | 44 | 44 | 43 | 43 | 43 | 44 | 44 | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 45 | 46 | 46 | 47 | 48 | 48 | 49 | 49 | 49 | 49 | 50 | 50 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 54 | 46 |
| 2 | 54 | 46 |
| 3 | 55 | 45 |
| 4 | 55 | 45 |
| 5 | 55 | 45 |
| 6 | 56 | 44 |
| 7 | 56 | 44 |
| 8 | 57 | 43 |
| 9 | 57 | 43 |
| 10 | 57 | 43 |
| 11 | 56 | 44 |
| 12 | 56 | 44 |
| 13 | 56 | 44 |
| 14 | 56 | 44 |
| 15 | 56 | 44 |
| 16 | 56 | 44 |
| 17 | 55 | 45 |
| 18 | 55 | 45 |
| 19 | 55 | 45 |
| 20 | 55 | 45 |
| 21 | 54 | 46 |
| 22 | 54 | 46 |
| 23 | 53 | 47 |
| 24 | 52 | 48 |
| 25 | 52 | 48 |
| 26 | 51 | 49 |
| 27 | 51 | 49 |
| 28 | 51 | 49 |
| 29 | 51 | 49 |
| 30 | 50 | 50 |
| 31 | 50 | 50 |
Chance of precipitation in October
Setauket-East Setauket gets around 4.4 in of rain and snow over 9.4 wet days in October. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 31% and peaks near 33% on the wettest days, and about 0 day brings snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Rain chance (%) | |
|---|---|
| 1 | 33 |
| 2 | 33 |
| 3 | 33 |
| 4 | 32 |
| 5 | 32 |
| 6 | 32 |
| 7 | 32 |
| 8 | 31 |
| 9 | 31 |
| 10 | 31 |
| 11 | 31 |
| 12 | 31 |
| 13 | 30 |
| 14 | 30 |
| 15 | 30 |
| 16 | 30 |
| 17 | 30 |
| 18 | 30 |
| 19 | 29 |
| 20 | 30 |
| 21 | 30 |
| 22 | 30 |
| 23 | 30 |
| 24 | 30 |
| 25 | 30 |
| 26 | 30 |
| 27 | 30 |
| 28 | 30 |
| 29 | 30 |
| 30 | 30 |
| 31 | 30 |
Humidity in October
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 73% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 51 | 52 | 54 | 55 | 56 | 58 | 60 | 61 | 64 | 65 | 67 | 69 | 70 | 72 | 73 | 75 | 77 | 78 | 79 | 81 | 82 | 84 | 85 | 86 | 87 | 87 | 88 | 88 | 89 | 90 | 90 |
| Comfortable (%) | 22 | 22 | 22 | 23 | 23 | 23 | 22 | 22 | 21 | 21 | 20 | 19 | 18 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 10 | 9 | 8 | 8 | 8 | 8 | 7 | 7 | 7 |
| Humid (%) | 17 | 16 | 15 | 14 | 13 | 12 | 12 | 11 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 |
| Muggy (%) | 10 | 10 | 9 | 8 | 8 | 7 | 6 | 6 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 51 | 22 | 17 | 10 |
| 2 | 52 | 22 | 16 | 10 |
| 3 | 54 | 22 | 15 | 9 |
| 4 | 55 | 23 | 14 | 8 |
| 5 | 56 | 23 | 13 | 8 |
| 6 | 58 | 23 | 12 | 7 |
| 7 | 60 | 22 | 12 | 6 |
| 8 | 61 | 22 | 11 | 6 |
| 9 | 64 | 21 | 10 | 5 |
| 10 | 65 | 21 | 10 | 4 |
| 11 | 67 | 20 | 9 | 4 |
| 12 | 69 | 19 | 9 | 3 |
| 13 | 70 | 18 | 9 | 3 |
| 14 | 72 | 18 | 8 | 2 |
| 15 | 73 | 17 | 8 | 2 |
| 16 | 75 | 16 | 7 | 2 |
| 17 | 77 | 15 | 7 | 1 |
| 18 | 78 | 14 | 7 | 1 |
| 19 | 79 | 13 | 7 | 1 |
| 20 | 81 | 12 | 6 | 1 |
| 21 | 82 | 11 | 6 | 1 |
| 22 | 84 | 10 | 6 | 0 |
| 23 | 85 | 10 | 5 | 0 |
| 24 | 86 | 9 | 5 | 0 |
| 25 | 87 | 8 | 5 | 0 |
| 26 | 87 | 8 | 5 | 0 |
| 27 | 88 | 8 | 4 | 0 |
| 28 | 88 | 8 | 4 | 0 |
| 29 | 89 | 7 | 4 | 0 |
| 30 | 90 | 7 | 3 | 0 |
| 31 | 90 | 7 | 3 | 0 |
Wind in October
Winds average 11 mph in October.
Across October, daily wind ranges from about 10 mph on the calmest days to 11 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 10 | light breeze |
| 2 | 10 | light breeze |
| 3 | 10 | light breeze |
| 4 | 10 | light breeze |
| 5 | 10 | light breeze |
| 6 | 10 | light breeze |
| 7 | 10 | light breeze |
| 8 | 10 | light breeze |
| 9 | 10 | light breeze |
| 10 | 10 | light breeze |
| 11 | 10 | light breeze |
| 12 | 10 | light breeze |
| 13 | 11 | light breeze |
| 14 | 11 | light breeze |
| 15 | 11 | light breeze |
| 16 | 11 | light breeze |
| 17 | 11 | light breeze |
| 18 | 11 | light breeze |
| 19 | 11 | light breeze |
| 20 | 11 | light breeze |
| 21 | 11 | light breeze |
| 22 | 11 | light breeze |
| 23 | 11 | light breeze |
| 24 | 11 | light breeze |
| 25 | 11 | light breeze |
| 26 | 11 | light breeze |
| 27 | 11 | light breeze |
| 28 | 11 | light breeze |
| 29 | 11 | light breeze |
| 30 | 11 | light breeze |
| 31 | 11 | light breeze |
Sunrise & sunset in October
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.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.6 | 11.5 | 11.5 | 11.4 | 11.4 | 11.3 | 11.3 | 11.2 | 11.2 | 11.2 | 11.1 | 11.1 | 11.0 | 11.0 | 10.9 | 10.9 | 10.8 | 10.8 | 10.8 | 10.7 | 10.7 | 10.6 | 10.6 | 10.5 | 10.5 | 10.5 | 10.4 | 10.4 | 10.3 | 10.3 | 10.3 |
| Sunrise (AM) | 5:54 | 5:55 | 5:56 | 5:58 | 5:59 | 6:00 | 6:01 | 6:02 | 6:03 | 6:04 | 6:05 | 6:06 | 6:07 | 6:09 | 6:10 | 6:11 | 6:12 | 6:13 | 6:14 | 6:15 | 6:17 | 6:18 | 6:19 | 6:20 | 6:21 | 6:22 | 6:24 | 6:25 | 6:26 | 6:27 | 6:28 |
| Sunset (PM) | 5:28 | 5:27 | 5:25 | 5:23 | 5:22 | 5:20 | 5:18 | 5:17 | 5:15 | 5:13 | 5:12 | 5:10 | 5:09 | 5:07 | 5:06 | 5:04 | 5:03 | 5:01 | 5:00 | 4:58 | 4:57 | 4:55 | 4:54 | 4:52 | 4:51 | 4:50 | 4:49 | 4:47 | 4:46 | 4:45 | 4:44 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.6 | 5:54 | 5:28 |
| 2 | 11.5 | 5:55 | 5:27 |
| 3 | 11.5 | 5:56 | 5:25 |
| 4 | 11.4 | 5:58 | 5:23 |
| 5 | 11.4 | 5:59 | 5:22 |
| 6 | 11.3 | 6:00 | 5:20 |
| 7 | 11.3 | 6:01 | 5:18 |
| 8 | 11.2 | 6:02 | 5:17 |
| 9 | 11.2 | 6:03 | 5:15 |
| 10 | 11.2 | 6:04 | 5:13 |
| 11 | 11.1 | 6:05 | 5:12 |
| 12 | 11.1 | 6:06 | 5:10 |
| 13 | 11.0 | 6:07 | 5:09 |
| 14 | 11.0 | 6:09 | 5:07 |
| 15 | 10.9 | 6:10 | 5:06 |
| 16 | 10.9 | 6:11 | 5:04 |
| 17 | 10.8 | 6:12 | 5:03 |
| 18 | 10.8 | 6:13 | 5:01 |
| 19 | 10.8 | 6:14 | 5:00 |
| 20 | 10.7 | 6:15 | 4:58 |
| 21 | 10.7 | 6:17 | 4:57 |
| 22 | 10.6 | 6:18 | 4:55 |
| 23 | 10.6 | 6:19 | 4:54 |
| 24 | 10.5 | 6:20 | 4:52 |
| 25 | 10.5 | 6:21 | 4:51 |
| 26 | 10.5 | 6:22 | 4:50 |
| 27 | 10.4 | 6:24 | 4:49 |
| 28 | 10.4 | 6:25 | 4:47 |
| 29 | 10.3 | 6:26 | 4:46 |
| 30 | 10.3 | 6:27 | 4:45 |
| 31 | 10.3 | 6:28 | 4:44 |
Solar energy in October
Average shortwave solar energy reaching the ground each day in October, about 3.19 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 — October's 3.19 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 3.7 | 3.7 | 3.6 | 3.6 | 3.6 | 3.5 | 3.5 | 3.5 | 3.4 | 3.4 | 3.4 | 3.3 | 3.3 | 3.3 | 3.2 | 3.2 | 3.2 | 3.1 | 3.1 | 3.1 | 3.0 | 3.0 | 3.0 | 2.9 | 2.9 | 2.8 | 2.8 | 2.8 | 2.7 | 2.7 | 2.7 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 3.7 | Moderate |
| 2 | 3.7 | Moderate |
| 3 | 3.6 | Moderate |
| 4 | 3.6 | Moderate |
| 5 | 3.6 | Moderate |
| 6 | 3.5 | Moderate |
| 7 | 3.5 | Moderate |
| 8 | 3.5 | Moderate |
| 9 | 3.4 | Moderate |
| 10 | 3.4 | Moderate |
| 11 | 3.4 | Moderate |
| 12 | 3.3 | Moderate |
| 13 | 3.3 | Moderate |
| 14 | 3.3 | Moderate |
| 15 | 3.2 | Moderate |
| 16 | 3.2 | Moderate |
| 17 | 3.2 | Moderate |
| 18 | 3.1 | Moderate |
| 19 | 3.1 | Moderate |
| 20 | 3.1 | Moderate |
| 21 | 3.0 | Moderate |
| 22 | 3.0 | Moderate |
| 23 | 3.0 | Moderate |
| 24 | 2.9 | Moderate |
| 25 | 2.9 | Moderate |
| 26 | 2.8 | Moderate |
| 27 | 2.8 | Moderate |
| 28 | 2.8 | Moderate |
| 29 | 2.7 | Moderate |
| 30 | 2.7 | Moderate |
| 31 | 2.7 | Moderate |
Hazard calendar for Setauket-East Setauket
In October, Setauket-East Setauket sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
Setauket-East Setauket sits in the Atlantic hurricane belt; the season peaks August–October.
Is October a good time to visit Setauket-East Setauket?
Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
October is a reasonable time to visit Setauket-East Setauket for sightseeing.
What to pack for Setauket-East Setauket in October
From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In October, Setauket-East Setauket sees daytime highs around 62°F and nights near 54°F. Worth packing: a warm layer and rain gear. About 9 days see rain.
Sea temperature near Setauket-East Setauket in October
The nearest coast averages about 64°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 14 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 39 | 35 | 37 | 44 | 54 | 65 | 72 | 74 | 71 | 64 | 55 | 46 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 39 | Bracing |
| Feb | 35 | Bracing |
| Mar | 37 | Bracing |
| Apr | 44 | Bracing |
| May | 54 | Bracing |
| Jun | 65 | Cool |
| Jul | 72 | Refreshing |
| Aug | 74 | Refreshing |
| Sep | 71 | Refreshing |
| Oct | 64 | Cool |
| Nov | 55 | Bracing |
| Dec | 46 | Bracing |
UV index in Setauket-East Setauket in October
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 Setauket-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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 6 | 7 | 8 | 8 | 6 | 6 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | High | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 7 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Air quality in Setauket-East Setauket in October
Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.
Air quality in Setauket-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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 10 | 13 | 14 | 16 | 19 | 20 | 20 | 17 | 13 | 9 | 8 | 9 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 13 | Moderate |
| Mar | 14 | Moderate |
| Apr | 16 | Moderate |
| May | 19 | Moderate |
| Jun | 20 | Moderate |
| Jul | 20 | Moderate |
| Aug | 17 | Moderate |
| Sep | 13 | Moderate |
| Oct | 9 | Good |
| Nov | 8 | Good |
| Dec | 9 | Good |
Where is Setauket-East Setauket?
Setauket-East Setauket sits at 40.9°N, 73.1°W, 102 ft above sea level, in United States. The nearest listed city is East Setauket, 0.6 mi away.
Topography around Setauket-East Setauket
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Setauket-East Setauket.
Within 2 miles, the terrain around Setauket-East Setauket has only modest variations in elevation — a maximum elevation change of 285 ft around an average of 121 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 Setauket-East Setauket is covered by trees (77%) within 2 miles, water (45%) and trees (42%) within 10 miles, and water (47%) and trees (41%) within 50 miles.
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
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 Setauket-East Setauket (40.9306°, -73.1018°, elevation 102 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).