Gretna weather in April

In April, Gretna sees average daytime highs of 75°F and overnight lows near 63°F, with 3.9 in of rain across 8.4 wet days and about 12.7 hours of daylight. It is the 7th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 73°F in the first days to 78°F by the end. The sky is clear or mostly clear about 39% 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 h 06 min by month's end. Set against the rest of the year, April is Gretna's 5th-clearest and 3rd-windiest month. For the whole year in context, see Gretna's year-round climate.

Daytime high
75°
7th warmest
Overnight low
63°
6th coldest
Rainfall
3.9 in
8.4 wet days
Daylight
12 h 42 min
5:39 AM – 6:22 PM
Cloud cover
51%
5th clearest
Wind
9 mph
3rd windiest
Solar energy
5.7 kWh/m²
Travel score
7.2
out of 10

Gretna is second-largest city in, and parish seat of, Jefferson Parish in the U.S. state of Louisiana.

Density
1,545/km²
people per km²
Founded
1836

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 73°F in the first days to 78°F by the end.

A typical April day in Gretna reaches about 75°F in the afternoon and slips back to 63°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 68°F and 81°F. Set against its neighbours, April runs about 6°F warmer than March and about 6°F cooler than May.

50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
17260
27360
37360
47361
57361
67361
77361
87362
97462
107462
117462
127462
137462
147563
157563
167563
177563
187563
197664
207664
217664
227664
237665
247765
257765
267765
277765
287866
297866
307866

How April really feels in Gretna

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.

Gretna weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan61° / 48°4.49.710.35.1
Feb64° / 51°4.28.810.95.8
Mar69° / 57°4.59.411.86.6
Apr75° / 63°3.98.412.77.2
May82° / 70°3.69.213.56.5
Jun86° / 76°5.215.213.94.4
Jul88° / 78°5.617.913.73.7
Aug87° / 78°6.317.413.13.8
Sep84° / 74°4.912.812.25.2
Oct77° / 65°3.5811.37.4
Nov69° / 56°3.37.310.57.0
Dec63° / 51°3.89.210.15.7

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 17% of April, with mostly cloudy or overcast conditions the remaining 44%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25347
35446
45446
55347
65347
75446
85446
95347
105446
115446
125545
135545
145545
155545
165644
175644
185743
195743
205743
215842
225842
235842
245941
255941
265941
276040
286040
296139
306139

Chance of precipitation in April

Any precipitation

Gretna gets around 3.9 in of rain over 8.4 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 28% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
131
231
331
432
531
631
731
831
931
1031
1130
1230
1329
1429
1528
1627
1727
1827
1926
2026
2126
2226
2326
2426
2526
2626
2726
2826
2926
3026

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 39% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1341620273
2341620273
3341620274
4331619274
5331619275
6321619276
7321619276
8321619277
9311520277
10311520278
11301520278
12301520278
13291520279
14281521289
15281421289
16271421299
17261421309
18261421309
192514213110
202414203110
212414203210
222314203211
232214203211
242114203212
252114203213
262014203314
271914203215
281813203216
291813203218
301713193219

Wind in April

Winds average 9 mph in April.

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

051015151015202530
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over April. Sunrise moves from 5:57 AM to 5:24 AM, and sunset from 6:13 PM to 6:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:576:13
212.35:566:14
312.35:546:14
412.45:536:15
512.45:526:15
612.45:516:16
712.55:496:17
812.55:486:17
912.55:476:18
1012.55:466:18
1112.65:456:19
1212.65:436:20
1312.65:426:20
1412.75:416:21
1512.75:406:21
1612.75:396:22
1712.85:386:23
1812.85:376:23
1912.85:356:24
2012.85:346:25
2112.95:336:25
2212.95:326:26
2312.95:316:27
2413.05:306:27
2513.05:296:28
2613.05:286:28
2713.05:276:29
2813.15:266:30
2913.15:256:30
3013.15:246:31

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.7 kWh/m².

For context, solar energy here swings from a low near 2.73 kWh/m² to a high of 6.23 kWh/m² in May across the year — April's 5.7 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.4Bright
75.4Bright
85.5Bright
95.5Bright
105.5Bright
115.6Bright
125.6Bright
135.7Bright
145.7Bright
155.7Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
246.0Bright
256.0Bright
266.0Bright
276.0Intense
286.0Intense
296.0Intense
306.1Intense
Planning a trip in April

Hazard calendar for Gretna

In seasonPeak

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

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

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

Is April a good time to visit Gretna?

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

7.2
Sightseeing
2nd-best month of the year
6.0
Beach & pool
5th-best month of the year

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

What to pack for Gretna in April

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

In April, Gretna sees daytime highs around 75°F and nights near 63°F. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Gretna in April

The nearest coast averages about 71°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 15 mi away) is warmest in August at about 86°F and coldest in January near 58°F.

It's comfortable for a long swim from Apr 5 to Nov 13 — about 7.3 months when the water holds above 68°F.

50°60°70°80°90°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan58Bracing
Feb58Bracing
Mar64Cool
Apr71Refreshing
May78Warm
Jun84Tropical
Jul86Tropical
Aug86Tropical
Sep83Tropical
Oct76Warm
Nov67Cool
Dec61Cool

UV index in Gretna in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks 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 Gretna peaks around July 11 at about 10 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 11UV 10Dec 19UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7High
Apr10Very high
May10Very high
Jun10Extreme
Jul10Extreme
Aug9Very high
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Gretna 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 Gretna is worst in July — around 22 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (November, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1621 µg/m³Nov 238 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar10Good
Apr10Good
May13Moderate
Jun18Moderate
Jul22Moderate
Aug17Moderate
Sep11Good
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is Gretna?

Gretna sits at 29.9°N, 90.1°W, 0 ft above sea level, in United States. The nearest listed city is Terrytown, 1.2 mi away.

Topography around Gretna

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

Within 2 miles, the terrain around Gretna has only modest variations in elevation — a maximum elevation change of 89 ft around an average of 3 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 141 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 243 ft.

The land around Gretna is covered by artificial surfaces (56%) and grassland (20%) within 2 miles, artificial surfaces (29%) and trees (27%) within 10 miles, and water (41%) and trees (28%) within 50 miles.

2 miles
89 ft
10 miles
141 ft
50 miles
243 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
April weather nearby: Terrytown 1.2 mi · Harvey 1.9 mi · Marrero 3.1 mi · New Orleans 3.1 mi · Chalmette 5.6 mi · Estelle 5.6 mi · Metairie 7.5 mi · Metairie Terrace 8.1 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 Gretna (29.9147°, -90.054°, elevation 0 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).