Flatlands in Summer
In summer (June, July and August), Flatlands sees average daytime highs around 78°F and overnight lows near 69°F, with 11.5 in of rain over about 32 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.
Over the season highs climb from about 71°F in early June to 78°F by late August. The sky is clear or mostly clear about 31% of the time across summer, and the air most often feels muggy.
Summer is Flatlands's best season of the year to visit on our travel score. For the whole year in context, see Flatlands's year-round climate.
- Avg daytime high
- 78°F
- warmest season of the year
- Avg overnight low
- 69°F
- Rainfall
- 11.5 in
- 32 wet days
- Avg wind
- 8 mph
- Travel score
- 6.6
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Flatlands in Summer
Over the season highs climb from about 71°F in early June to 78°F by late August.
A typical summer day in Flatlands reaches about 78°F and drops to 69°F overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Flatlands
Once humidity and wind are folded in, summer brings about 0 days that feel above 90°F and 0 that feel at or below 32°F.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Flatlands weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 39° / 29° | 3.6 | 9.8 | 3.9 | 9.4 | 0.0 |
| Feb | 40° / 29° | 3.4 | 8.9 | 3.5 | 10.4 | 0.1 |
| Mar | 47° / 36° | 4.5 | 10.5 | 2.6 | 11.7 | 1.4 |
| Apr | 56° / 46° | 3.8 | 10.9 | 0.3 | 13 | 3.7 |
| May | 65° / 55° | 3.5 | 11 | 0 | 14.2 | 5.7 |
| Jun | 75° / 65° | 3.9 | 11 | 0 | 14.8 | 6.6 |
| Jul | 80° / 71° | 3.8 | 11 | 0 | 14.6 | 6.4 |
| Aug | 79° / 70° | 3.9 | 10.2 | 0 | 13.6 | 6.7 |
| Sep | 73° / 64° | 3.9 | 9.5 | 0 | 12.3 | 6.9 |
| Oct | 63° / 53° | 4.2 | 8.8 | 0 | 10.9 | 5.8 |
| Nov | 53° / 43° | 3.4 | 8.6 | 0.3 | 9.7 | 3.1 |
| Dec | 44° / 35° | 4.4 | 10 | 1.9 | 9.1 | 0.8 |
Cloud cover in Summer
The sky is clear or mostly clear about 31% of the time across summer.
Chance of precipitation in Summer
Flatlands gets around 11.5 in of rain over 32 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 8 mph across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 42 min in early June to 13 hours by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.8 kWh/m².
Hazard calendar for Flatlands
In summer, Flatlands overlaps its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
Flatlands sits in the Atlantic hurricane belt; the season peaks August–October.
Is summer a good time to visit Flatlands?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Flatlands for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Flatlands in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Flatlands sees daytime highs around 78°F and nights near 69°F. Pack sun protection. Worth having: light clothes and rain gear. About 32 days see rain.
Sea temperature near Flatlands in Summer
The nearest coast averages about 70°F across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 74°F and coldest in February near 40°F.
It's comfortable for a long swim from Jun 30 to Sep 26 — about 2.9 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 43 | 40 | 41 | 46 | 55 | 65 | 72 | 74 | 71 | 63 | 55 | 48 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 43 | Bracing |
| Feb | 40 | Bracing |
| Mar | 41 | Bracing |
| Apr | 46 | Bracing |
| May | 55 | Bracing |
| Jun | 65 | Cool |
| Jul | 72 | Refreshing |
| Aug | 74 | Refreshing |
| Sep | 71 | Refreshing |
| Oct | 63 | Cool |
| Nov | 55 | Bracing |
| Dec | 48 | Bracing |
UV index in Flatlands in Summer
Clear-sky midday UV across summer averages 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 Flatlands 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 Flatlands in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Flatlands is worst in July — around 18 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (November, 10 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) | 12 | 15 | 16 | 16 | 17 | 17 | 18 | 16 | 14 | 11 | 10 | 12 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Moderate |
| Feb | 15 | Moderate |
| Mar | 16 | Moderate |
| Apr | 16 | Moderate |
| May | 17 | Moderate |
| Jun | 17 | Moderate |
| Jul | 18 | Moderate |
| Aug | 16 | Moderate |
| Sep | 14 | Moderate |
| Oct | 11 | Good |
| Nov | 10 | Good |
| Dec | 12 | Good |
Where is Flatlands?
Flatlands sits at 40.6°N, 73.9°W, 16 ft above sea level, in United States. The nearest listed city is Sheepshead Bay, 1.9 mi away.
Topography around Flatlands
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Flatlands.
Within 2 miles, the terrain around Flatlands has only modest variations in elevation — a maximum elevation change of 89 ft around an average of 30 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 577 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,755 ft.
The land around Flatlands is covered by artificial surfaces (82%) within 2 miles, water (47%) and artificial surfaces (41%) within 10 miles, and trees (48%) and water (32%) 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 Flatlands (40.6212°, -73.9349°, elevation 16 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.