Fleming Island in Spring
In spring (March, April and May), Fleming Island sees average daytime highs around 79°F and overnight lows near 59°F, with 8.0 in of rain over about 23 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 71°F in early March to 87°F by late May. The sky is clear or mostly clear about 40% of the time across spring, and the air most often feels dry.
Spring is Fleming Island's best season of the year to visit on our travel score. For the whole year in context, see Fleming Island's year-round climate.
- Avg daytime high
- 79°F
- 3rd-warmest season
- Avg overnight low
- 59°F
- Rainfall
- 8.0 in
- 23 wet days
- Avg wind
- 7 mph
- Travel score
- 6.7
- best season of the year
- Months
- Mar · Apr · May
Temperature in Fleming Island in Spring
Over the season highs climb from about 71°F in early March to 87°F by late May.
A typical spring day in Fleming Island reaches about 79°F and drops to 59°F overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Fleming Island
Once humidity and wind are folded in, spring brings about 3 days that feel above 90°F and 0 that feel at or below 32°F.
The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Fleming Island weather by month
How the three spring months (March, April and May) 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 | 66° / 46° | 2.6 | 7.3 | 10.3 | 6.5 |
| Feb | 69° / 49° | 2.4 | 6.6 | 10.9 | 6.8 |
| Mar | 74° / 53° | 2.9 | 7.3 | 11.8 | 7.4 |
| Apr | 79° / 59° | 2.3 | 7 | 12.7 | 7.2 |
| May | 85° / 66° | 2.9 | 9.1 | 13.5 | 5.5 |
| Jun | 88° / 72° | 5.4 | 18.8 | 13.9 | 3.4 |
| Jul | 90° / 74° | 5.5 | 21.1 | 13.7 | 2.9 |
| Aug | 89° / 74° | 6.2 | 22.3 | 13.1 | 3.0 |
| Sep | 86° / 72° | 5.1 | 16.5 | 12.2 | 4.2 |
| Oct | 80° / 64° | 2.8 | 9.2 | 11.3 | 6.7 |
| Nov | 73° / 55° | 1.6 | 6 | 10.5 | 7.5 |
| Dec | 68° / 49° | 2.2 | 6.9 | 10.1 | 6.8 |
Cloud cover in Spring
The sky is clear or mostly clear about 40% of the time across spring.
Chance of precipitation in Spring
Fleming Island gets around 8.0 in of rain over 23 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 7 mph across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 18 min in early March to 13 h 48 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.7 kWh/m².
Hazard calendar for Fleming Island
In spring, Fleming Island overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Fleming Island sits in the Atlantic hurricane belt; the season peaks August–October.
Fleming Island's rainy season runs May–October, when most of the year's rain falls.
Is spring a good time to visit Fleming Island?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Fleming Island for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Fleming Island in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Fleming Island sees daytime highs around 79°F and nights near 59°F. Pack light clothes and sun protection. Worth having: rain gear. About 23 days see rain.
Sea temperature near Fleming Island in Spring
The nearest coast averages about 69°F across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 29 mi away) 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 Fleming Island in Spring
Clear-sky midday UV across spring averages around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Fleming Island 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 | 9 | 11 | 10 | 10 | 8 | 6 | 5 | 4 |
| 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 | 9 | Very high |
| Jun | 11 | Extreme |
| Jul | 10 | Extreme |
| Aug | 10 | Very high |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 5 | Moderate |
| Dec | 4 | Moderate |
Air quality in Fleming Island in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Fleming Island 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 Fleming Island?
Fleming Island sits at 30.1°N, 81.7°W, 20 ft above sea level, in United States. The nearest listed city is Lakeside, 3.7 mi away.
Topography around Fleming Island
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Fleming Island.
Within 2 miles, the terrain around Fleming Island has only modest variations in elevation — a maximum elevation change of 79 ft around an average of 23 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 164 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 308 ft.
The land around Fleming Island is covered by trees (61%) within 2 miles, trees (59%) within 10 miles, and trees (65%) and water (23%) 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 Fleming Island (30.0933°, -81.719°, 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.