Chalmette weather in August

In August, Chalmette sees average daytime highs of 87°F and overnight lows near 78°F, with 6.3 in of rain across 17.4 wet days and about 13.1 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 87°F through the month. The sky is clear or mostly clear about 29% of the time in August, and the air most often feels miserable.

Daylight stretches from about 13 h 30 min at the start of August to 12 h 42 min by month's end. Set against the rest of the year, August is Chalmette's 11th-clearest and 11th-windiest month. For the whole year in context, see Chalmette's year-round climate.

Daytime high
87°
2nd warmest
Overnight low
78°
11th coldest
Rainfall
6.3 in
17.4 wet days
Daylight
13 h 06 min
5:31 AM – 6:37 PM
Cloud cover
61%
11th clearest
Wind
6 mph
11th windiest
Solar energy
5.47 kWh/m²
Travel score
3.8
out of 10

Chalmette is unincorporated suburban community and census-designated place in St. Bernard Parish, Louisiana, United States.

Density
813/km²
people per km²

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 87°F through the month.

A typical August day in Chalmette reaches about 87°F in the afternoon and slips back to 78°F overnight — a 10°F spread between the day's warmth and the night's chill. On most days the high lands between 84°F and 91°F. Set against its neighbours, August runs on par with July and about 3°F warmer than September.

70°80°90°151015202531
Avg high (°F)Avg low (°F)
18878
28878
38878
48878
58878
68878
78878
88878
98878
108878
118878
128878
138878
148878
158778
168778
178778
188778
198778
208778
218778
228778
238778
248777
258777
268777
278777
288777
298777
308777
318777

How August really feels in Chalmette

Once humidity and wind are folded in, August averages 31 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
31
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Chalmette weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 1st-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 August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24852
34852
44753
54753
64753
74654
84654
94654
104654
114654
124654
134753
144753
154753
164753
174852
184852
194852
204951
214951
224951
235050
244951
255050
265050
274951
285050
295149
305149
315149

Chance of precipitation in August

Any precipitation

Chalmette gets around 6.3 in of rain over 17.4 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 56% and peaks near 58% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
157
256
356
456
556
656
757
857
957
1057
1157
1257
1358
1458
1558
1658
1758
1857
1957
2057
2156
2256
2356
2455
2555
2655
2755
2854
2954
3054
3153

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 58% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10023464
20023464
30023464
40023464
50023464
60023365
70023365
80023365
90023365
100023266
110123265
120123265
130123364
140123364
150123463
160123562
170123562
180133660
190133759
200133858
210133957
220143956
230144055
240144154
250144352
260154450
270154548
280154647
291164745
301274744
311274842

Wind in August

Winds average 6 mph in August.

Across August, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 30 min at the start of August to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over August. Sunrise moves from 5:22 AM to 5:40 AM, and sunset from 6:50 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:226:50
213.45:236:49
313.45:236:48
413.45:246:47
513.45:256:47
613.35:256:46
713.35:266:45
813.35:266:44
913.35:276:43
1013.25:286:42
1113.25:286:41
1213.25:296:41
1313.25:296:40
1413.15:306:39
1513.15:316:38
1613.15:316:37
1713.15:326:36
1813.05:326:35
1913.05:336:34
2013.05:346:32
2113.05:346:31
2212.95:356:30
2312.95:356:29
2412.95:366:28
2512.85:376:27
2612.85:376:26
2712.85:386:25
2812.85:386:23
2912.75:396:22
3012.75:396:21
3112.75:406:20

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.47 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 — August's 5.47 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in August

Hazard calendar for Chalmette

In seasonPeak

In August, Chalmette sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Chalmette 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 August a good time to visit Chalmette?

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

3.8
Sightseeing
11th-best month of the year
5.6
Beach & pool
6th-best month of the year

August is a weaker month for outdoor sightseeing in Chalmette.

What to pack for Chalmette in August

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

In August, Chalmette sees daytime highs around 87°F and nights near 78°F. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Chalmette in August

The nearest coast averages about 86°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 mi away) is warmest in August at about 86°F and coldest in January near 57°F.

It's comfortable for a long swim from Apr 5 to Nov 10 — about 7.2 months when the water holds above 68°F.

50°60°70°80°90°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan57Bracing
Feb58Bracing
Mar64Cool
Apr71Refreshing
May78Warm
Jun84Tropical
Jul86Tropical
Aug86Tropical
Sep83Tropical
Oct75Warm
Nov67Cool
Dec60Cool

UV index in Chalmette in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chalmette 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 Chalmette in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Chalmette 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 Chalmette?

Chalmette sits at 29.9°N, 90.0°W, 3 ft above sea level, in United States. The nearest listed city is Terrytown, 4.3 mi away.

Topography around Chalmette

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

Within 2 miles, the terrain around Chalmette has only modest variations in elevation — a maximum elevation change of 39 ft around an average of 3 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 151 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 243 ft.

The land around Chalmette is covered by artificial surfaces (32%), grassland (27%) and water (20%) within 2 miles, artificial surfaces (23%), water (23%) and trees (22%) within 10 miles, and water (44%) and trees (28%) within 50 miles.

2 miles
39 ft
10 miles
151 ft
50 miles
243 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Terrytown 4.3 mi · Gretna 5.6 mi · New Orleans 6.8 mi · Harvey 7.5 mi · Marrero 8.7 mi · Estelle 11 mi · Metairie 12 mi · Metairie Terrace 12 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 Chalmette (29.943°, -89.9654°, 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).