Jacksonville Beach in Summer
In summer (June, July and August), Jacksonville Beach sees average daytime highs around 87°F and overnight lows near 75°F, with 15.4 in of rain over about 56 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 87°F. The sky is clear or mostly clear about 24% of the time across summer, and the air most often feels oppressive.
Summer is Jacksonville Beach's weakest season of the year to visit on our travel score. For the whole year in context, see Jacksonville Beach's year-round climate.
- Avg daytime high
- 87°F
- warmest season of the year
- Avg overnight low
- 75°F
- Rainfall
- 15.4 in
- 56 wet days
- Avg wind
- 7 mph
- Travel score
- 3.8
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Jacksonville Beach in Summer
Across summer, daytime highs hold fairly steady around 87°F.
A typical summer day in Jacksonville Beach reaches about 87°F and drops to 75°F overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Jacksonville Beach
Once humidity and wind are folded in, summer brings about 88 days that feel above 90°F and 0 that feel at or below 32°F.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Jacksonville Beach 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 | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 64° / 49° | 2.5 | 7.3 | 10.3 | 6.3 |
| Feb | 66° / 51° | 2.5 | 6.8 | 10.9 | 6.6 |
| Mar | 71° / 55° | 2.9 | 7.3 | 11.8 | 7.2 |
| Apr | 76° / 61° | 2.2 | 6.7 | 12.7 | 7.5 |
| May | 82° / 68° | 2.4 | 8.1 | 13.5 | 6.5 |
| Jun | 86° / 74° | 5.0 | 16.6 | 13.9 | 4.2 |
| Jul | 88° / 76° | 4.7 | 18.5 | 13.8 | 3.6 |
| Aug | 87° / 76° | 5.7 | 20.5 | 13.1 | 3.6 |
| Sep | 84° / 74° | 5.5 | 16.3 | 12.2 | 4.7 |
| Oct | 78° / 67° | 3.2 | 9.6 | 11.3 | 6.9 |
| Nov | 71° / 57° | 1.8 | 6.4 | 10.5 | 7.3 |
| Dec | 66° / 52° | 2.3 | 7 | 10.1 | 6.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 24% of the time across summer.
Chance of precipitation in Summer
Jacksonville Beach gets around 15.4 in of rain over 56 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 mph across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 48 min in early June to 12 h 42 min 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 5.9 kWh/m².
Hazard calendar for Jacksonville Beach
In summer, Jacksonville Beach overlaps its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.
Jacksonville Beach sits in the Atlantic hurricane belt; the season peaks August–October.
Jacksonville Beach's rainy season runs June–October, when most of the year's rain falls.
Is summer a good time to visit Jacksonville Beach?
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 weaker month for outdoor sightseeing in Jacksonville Beach.
What to pack for Jacksonville Beach in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Jacksonville Beach sees daytime highs around 87°F and nights near 75°F. Pack light clothes, rain gear and sun protection. About 56 days see rain.
Sea temperature near Jacksonville Beach in Summer
The nearest coast averages about 82°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 82°F and coldest in February near 61°F.
It's comfortable for a long swim from Apr 13 to Nov 28 — about 7.6 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 62 | 61 | 63 | 69 | 75 | 80 | 82 | 82 | 82 | 78 | 70 | 65 |
| Comfort | Cool | Cool | Cool | Refreshing | Refreshing | Warm | Warm | Tropical | Warm | Warm | Refreshing | Cool |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 62 | Cool |
| Feb | 61 | Cool |
| Mar | 63 | Cool |
| Apr | 69 | Refreshing |
| May | 75 | Refreshing |
| Jun | 80 | Warm |
| Jul | 82 | Warm |
| Aug | 82 | Tropical |
| Sep | 82 | Warm |
| Oct | 78 | Warm |
| Nov | 70 | Refreshing |
| Dec | 65 | Cool |
UV index in Jacksonville Beach in Summer
Clear-sky midday UV across summer averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Jacksonville Beach peaks around June 21 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 4 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 6 | 7 | 7 | 8 | 11 | 10 | 10 | 8 | 6 | 5 | 3 |
| Level | Moderate | High | Very high | High | Very high | Extreme | Extreme | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 6 | High |
| Mar | 7 | Very high |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 10 | Extreme |
| Aug | 10 | Very high |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 5 | Moderate |
| Dec | 3 | Moderate |
Air quality in Jacksonville Beach 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 Jacksonville Beach is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 7 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) | 9 | 13 | 12 | 13 | 14 | 16 | 18 | 16 | 12 | 8 | 8 | 7 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 13 | Moderate |
| Mar | 12 | Moderate |
| Apr | 13 | Moderate |
| May | 14 | Moderate |
| Jun | 16 | Moderate |
| Jul | 18 | Moderate |
| Aug | 16 | Moderate |
| Sep | 12 | Good |
| Oct | 8 | Good |
| Nov | 8 | Good |
| Dec | 7 | Good |
Where is Jacksonville Beach?
Jacksonville Beach sits at 30.3°N, 81.4°W, 10 ft above sea level, in United States. The nearest listed city is Ponte Vedra Beach, 3.7 mi away.
Topography around Jacksonville Beach
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Jacksonville Beach.
Within 2 miles, the terrain around Jacksonville Beach has only modest variations in elevation — a maximum elevation change of 59 ft around an average of 10 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 128 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 308 ft.
The land around Jacksonville Beach is covered by water (47%) and artificial surfaces (21%) within 2 miles, water (52%) and trees (27%) within 10 miles, and trees (52%) and water (35%) 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 Jacksonville Beach (30.2947°, -81.3931°, elevation 10 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.