New London in Summer
In summer (June, July and August), New London sees average daytime highs around 72°F and overnight lows near 65°F, with 10.4 in of rain over about 27 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 64°F in early June to 73°F by late August. The sky is clear or mostly clear about 35% of the time across summer, and the air most often feels muggy.
Summer is New London's best season of the year to visit on our travel score. For the whole year in context, see New London's year-round climate.
- Avg daytime high
- 72°F
- warmest season of the year
- Avg overnight low
- 65°F
- Rainfall
- 10.4 in
- 27 wet days
- Avg wind
- 10 mph
- Travel score
- 6.9
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in New London in Summer
Over the season highs climb from about 64°F in early June to 73°F by late August.
A typical summer day in New London reaches about 72°F and drops to 65°F overnight. The warmest of the three months is July, the coolest June.
How summer really feels in New London
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.
New London 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 | 38° / 29° | 4.0 | 10.4 | 4.5 | 9.4 | 0.0 |
| Feb | 38° / 29° | 3.6 | 9.1 | 4 | 10.3 | 0.0 |
| Mar | 43° / 34° | 4.7 | 10.5 | 3.4 | 11.7 | 0.4 |
| Apr | 50° / 43° | 4.2 | 10.9 | 0.4 | 13.1 | 2.3 |
| May | 58° / 51° | 3.5 | 10.8 | 0 | 14.3 | 4.3 |
| Jun | 67° / 61° | 3.6 | 9.6 | 0 | 14.9 | 6.3 |
| Jul | 74° / 68° | 3.0 | 8.7 | 0 | 14.7 | 7.2 |
| Aug | 74° / 68° | 3.8 | 8.8 | 0 | 13.7 | 7.2 |
| Sep | 69° / 62° | 4.1 | 8.8 | 0 | 12.3 | 6.8 |
| Oct | 61° / 53° | 4.8 | 9.4 | 0.1 | 10.9 | 5.3 |
| Nov | 52° / 44° | 4.2 | 9.3 | 0.3 | 9.7 | 2.8 |
| Dec | 44° / 35° | 4.9 | 11.5 | 2.8 | 9.1 | 0.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 35% of the time across summer.
Chance of precipitation in Summer
New London gets around 10.4 in of rain over 27 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 10 mph across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 48 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 6.1 kWh/m².
Hazard calendar for New London
In summer, New London overlaps its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
New London sits in the Atlantic hurricane belt; the season peaks August–October.
Is summer a good time to visit New London?
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 New London for sightseeing.
What to pack for New London in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, New London sees daytime highs around 72°F and nights near 65°F. Pack sun protection. Worth having: light clothes and rain gear. About 27 days see rain.
Sea temperature near New London in Summer
The nearest coast averages about 67°F across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 16 mi away) is warmest in August at about 71°F and coldest in February near 39°F.
It's comfortable for a long swim from Jul 15 to Sep 15 — about 2.1 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 42 | 39 | 39 | 44 | 52 | 61 | 69 | 71 | 68 | 63 | 55 | 48 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 42 | Bracing |
| Feb | 39 | Bracing |
| Mar | 39 | Bracing |
| Apr | 44 | Bracing |
| May | 52 | Bracing |
| Jun | 61 | Cool |
| Jul | 69 | Refreshing |
| Aug | 71 | Refreshing |
| Sep | 68 | Refreshing |
| Oct | 63 | Cool |
| Nov | 55 | Bracing |
| Dec | 48 | Bracing |
UV index in New London 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 New London peaks around July 10 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 | 4 | 6 | 8 | 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 | 4 | Moderate |
| Apr | 6 | High |
| May | 8 | 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 New London 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 New London is worst in July — around 15 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (November, 6 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) | 7 | 10 | 11 | 12 | 14 | 14 | 15 | 13 | 10 | 7 | 6 | 6 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 10 | Good |
| Mar | 11 | Good |
| Apr | 12 | Good |
| May | 14 | Moderate |
| Jun | 14 | Moderate |
| Jul | 15 | Moderate |
| Aug | 13 | Moderate |
| Sep | 10 | Good |
| Oct | 7 | Good |
| Nov | 6 | Good |
| Dec | 6 | Good |
Where is New London?
New London sits at 41.4°N, 72.1°W, 56 ft above sea level, in United States. The nearest listed city is Waterford, 1.9 mi away.
Topography around New London
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of New London.
Within 2 miles, the terrain around New London has only modest variations in elevation — a maximum elevation change of 266 ft around an average of 82 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 656 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,325 ft.
The land around New London is covered by trees (41%) and artificial surfaces (29%) within 2 miles, trees (55%) and water (35%) within 10 miles, and trees (49%) and water (44%) 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 New London (41.3556°, -72.0995°, elevation 56 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.