Merritt Island weather in April

In April, Merritt Island sees average daytime highs of 77°F and overnight lows near 67°F, with 1.9 in of rain across 6.8 wet days and about 12.7 hours of daylight. It is the 7th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 75°F in the first days to 78°F by the end. The sky is clear or mostly clear about 46% of the time in April, and the air most often feels muggy.

Daylight stretches from about 12 h 18 min at the start of April to 13 hours by month's end. Set against the rest of the year, April is Merritt Island's 1st-clearest and 5th-windiest month. For the whole year in context, see Merritt Island's year-round climate.

Daytime high
77°
7th warmest
Overnight low
67°
6th coldest
Rainfall
1.9 in
6.8 wet days
Daylight
12 h 42 min
6:03 AM – 6:43 PM
Cloud cover
46%
1st clearest
Wind
10 mph
5th windiest
Solar energy
6 kWh/m²
Travel score
7.6
out of 10

Merritt Island is census designated place in Brevard County, Florida, United States.

Density
284/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 75°F in the first days to 78°F by the end.

A typical April day in Merritt Island reaches about 77°F in the afternoon and slips back to 67°F overnight — a 10°F spread between the day's warmth and the night's chill. On most days the high lands between 72°F and 82°F. Set against its neighbours, April runs about 4°F warmer than March and about 4°F cooler than May.

50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
17565
27565
37565
47566
57666
67666
77666
87666
97666
107666
117667
127667
137667
147667
157667
167767
177767
187767
197767
207768
217768
227768
237868
247868
257869
267869
277869
287869
297869
307969

How April really feels in Merritt Island

Once humidity and wind are folded in, April 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.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Merritt Island weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan69° / 58°2.36.910.46.9
Feb70° / 60°2.06.8117.0
Mar73° / 63°2.46.611.87.5
Apr77° / 67°1.96.812.77.6
May81° / 72°2.79.313.46.8
Jun84° / 76°4.918.313.84.5
Jul85° / 77°4.319.813.64.0
Aug85° / 78°5.321.5133.8
Sep83° / 77°6.019.812.24.4
Oct80° / 73°3.712.111.36.4
Nov75° / 66°1.87.510.67.4
Dec71° / 62°1.96.510.27.1

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in April, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 20% of April, with mostly cloudy or overcast conditions the remaining 34%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16436
26535
36535
46535
56535
66535
76436
86436
96436
106436
116436
126436
136436
146535
156535
166535
176634
186634
196733
206733
216733
226733
236832
246832
256931
266931
276931
286931
297030
307129

Chance of precipitation in April

Any precipitation

Merritt Island gets around 1.9 in of rain over 6.8 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 23% and peaks near 25% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
123
223
323
423
523
624
724
824
924
1024
1124
1225
1324
1424
1524
1624
1724
1823
1923
2023
2123
2222
2322
2422
2522
2622
2722
2822
2922
3022

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

Most of April feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, April lands in the muggy band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 40% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1202227291
2202128302
3202028312
4192028312
5192028322
6192027322
7181927323
8181927333
9172027333
10172027334
11172026334
12162026334
13162025344
14152125345
15152125345
16152125355
17142125355
18142124356
19132124356
20132024357
21132024367
22132024368
23121924368
24121924369
251118243710
261118243711
271017243711
281017243712
29916243813
30915243813

Wind in April

Winds average 10 mph in April.

Across April, daily wind ranges from about 9 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
110light breeze
210light breeze
310light breeze
410light breeze
510light breeze
610light breeze
710light breeze
810light breeze
910light breeze
1010light breeze
1110light breeze
1210light breeze
1310light breeze
1410light breeze
1510light breeze
1610light breeze
1710light breeze
1810light breeze
1910light breeze
2010light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
309light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over April. Sunrise moves from 6:20 AM to 5:49 AM, and sunset from 6:35 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:206:35
212.36:196:36
312.36:176:36
412.36:166:37
512.46:156:37
612.46:146:38
712.46:136:38
812.56:126:39
912.56:106:39
1012.56:096:40
1112.56:086:41
1212.66:076:41
1312.66:066:42
1412.66:056:42
1512.66:046:43
1612.76:036:43
1712.76:026:44
1812.76:016:44
1912.85:596:45
2012.85:586:46
2112.85:576:46
2212.85:566:47
2312.95:556:47
2412.95:546:48
2512.95:536:48
2612.95:526:49
2713.05:516:50
2813.05:516:50
2913.05:506:51
3013.05:496:51

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6 kWh/m².

For context, solar energy here swings from a low near 3 kWh/m² to a high of 6.37 kWh/m² in May across the year — April's 6 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
156.0Bright
166.0Bright
176.0Intense
186.0Intense
196.1Intense
206.1Intense
216.1Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in April

Hazard calendar for Merritt Island

In seasonPeak

None of Merritt Island's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Merritt Island sits in the Atlantic hurricane belt; the season peaks August–October.

Merritt Island's rainy season runs June–October, when most of the year's rain falls.

Atlantic hurricane
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is April a good time to visit Merritt Island?

Our two travel scores rate April for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.6
Sightseeing
1st-best month of the year
6.7
Beach & pool
2nd-best month of the year

April is one of the better times to visit Merritt Island for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Merritt Island in April

From April's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In April, Merritt Island sees daytime highs around 77°F and nights near 67°F. Pack sun protection. Worth having: light clothes. About 7 days see rain.

sun protectionlight clothes

Sea temperature near Merritt Island in April

The nearest coast averages about 72°F in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 19 mi away) is warmest in September at about 82°F and coldest in February near 67°F.

It's comfortable for a long swim from Mar 2 to Jan 31 — about 11 months when the water holds above 68°F.

65°70°75°80°85°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan69Refreshing
Feb67Cool
Mar69Refreshing
Apr72Refreshing
May76Warm
Jun80Warm
Jul81Warm
Aug82Warm
Sep82Tropical
Oct80Warm
Nov74Refreshing
Dec71Refreshing

UV index in Merritt Island in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks 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 Merritt Island peaks around July 16 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 16UV 11Dec 19UV 4
UV index (midday)Level
Jan5Moderate
Feb6High
Mar8Very high
Apr8Very high
May9Very high
Jun10Extreme
Jul11Extreme
Aug10Extreme
Sep9Very high
Oct7High
Nov5High
Dec4Moderate

Air quality in Merritt Island in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Merritt Island is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1019 µg/m³Dec 137 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar15Moderate
Apr13Moderate
May13Moderate
Jun19Moderate
Jul19Moderate
Aug16Moderate
Sep11Good
Oct9Good
Nov8Good
Dec7Good
Location & terrain

Where is Merritt Island?

Merritt Island sits at 28.4°N, 80.7°W, 3 ft above sea level, in United States. The nearest listed city is Rockledge, 2.5 mi away.

Topography around Merritt Island

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Merritt Island.

Within 2 miles, the terrain around Merritt Island has only modest variations in elevation — a maximum elevation change of 39 ft around an average of 7 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 157 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 246 ft.

The land around Merritt Island is covered by water (42%) and artificial surfaces (30%) within 2 miles, water (46%) and trees (25%) within 10 miles, and water (39%) and trees (33%) within 50 miles.

2 miles
39 ft
10 miles
157 ft
50 miles
246 ft
treesgrasslandartificial surfaceswaterwetland
April weather nearby: Rockledge 2.5 mi · Cocoa 3.7 mi · Titusville 19 mi · Melbourne 20 mi · West Melbourne 20 mi · Palm Bay 23 mi · Alafaya 35 mi · Saint Cloud 37 mi

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
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

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 Merritt Island (28.359°, -80.69°, elevation 3 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).