Opelousas weather in August

In August, Opelousas sees average daytime highs of 91°F and overnight lows near 74°F, with 4.9 in of rain across 15.4 wet days and about 13.1 hours of daylight. It is the 1st-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 91°F through the month. The sky is clear or mostly clear about 30% of the time in August, and the air most often feels oppressive.

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 Opelousas's 10th-clearest and 12th-windiest month. For the whole year in context, see Opelousas's year-round climate.

Daytime high
91°
1st warmest
Overnight low
74°
11th coldest
Rainfall
4.9 in
15.4 wet days
Daylight
13 h 06 min
5:39 AM – 6:46 PM
Cloud cover
59%
10th clearest
Wind
5 mph
12th windiest
Solar energy
5.68 kWh/m²
Travel score
3.1
out of 10

Opelousas is parish seat of St. Landry Parish, Louisiana, United States.

Founded
1720

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 91°F through the month.

A typical August day in Opelousas reaches about 91°F in the afternoon and slips back to 74°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 86°F and 96°F. Set against its neighbours, August runs on par with July and about 3°F warmer than September.

70°80°90°100°151015202531
Avg high (°F)Avg low (°F)
19174
29174
39174
49174
59174
69174
79174
89274
99274
109274
119274
129174
139174
149174
159174
169174
179174
189174
199174
209174
219174
229174
239174
249173
259173
269173
279173
289173
299073
309073
319073

How August really feels in Opelousas

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.

Opelousas weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan61° / 43°5.19.610.25.2
Feb65° / 46°4.39.210.95.9
Mar71° / 52°4.49.911.86.7
Apr78° / 58°4.59.212.76.9
May85° / 66°4.19.613.55.4
Jun90° / 73°4.713.813.93.7
Jul91° / 74°5.117.213.83.1
Aug91° / 74°4.915.413.13.1
Sep88° / 70°3.910.712.24.5
Oct80° / 60°3.97.411.37.0
Nov70° / 50°3.68.310.57.0
Dec63° / 45°4.89.310.15.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% 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 50%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25050
35149
45149
55149
65149
75050
85050
94951
104951
114951
124951
134852
144951
154951
164951
174951
184951
194951
204951
215050
225050
235050
244951
255050
264951
274951
285050
294951
305050
315050

Chance of precipitation in August

Any precipitation

Opelousas gets around 4.9 in of rain over 15.4 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 50% and peaks near 52% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
150
250
350
449
549
649
748
848
948
1049
1149
1250
1350
1451
1551
1651
1752
1852
1952
2052
2152
2252
2352
2452
2551
2651
2751
2850
2949
3049
3148

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 61% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
101286029
201286029
301286128
401286128
501286227
601286227
701286227
811286226
911286226
1011296126
1111396026
1211395927
1311395927
1411395927
1511395927
1611396026
17114105826
18114105925
19114115924
20114115924
21114125923
22014126122
23014136121
24015136120
25015146119
26015146218
27016156117
28116156116
29126166015
30127166014
31127166014

Wind in August

Winds average 5 mph in August, the calmest month.

Across August, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 5:30 AM to 5:48 AM, and sunset from 6:59 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:306:59
213.55:306:58
313.45:316:58
413.45:316:57
513.45:326:56
613.45:336:55
713.45:336:54
813.35:346:54
913.35:356:53
1013.35:356:52
1113.25:366:51
1213.25:366:50
1313.25:376:49
1413.25:386:48
1513.15:386:47
1613.15:396:46
1713.15:406:45
1813.15:406:44
1913.05:416:43
2013.05:416:42
2113.05:426:41
2212.95:436:39
2312.95:436:38
2412.95:446:37
2512.95:446:36
2612.85:456:35
2712.85:466:34
2812.85:466:32
2912.75:476:31
3012.75:476:30
3112.75:486:29

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.68 kWh/m².

For context, solar energy here swings from a low near 2.62 kWh/m² to a high of 6.16 kWh/m² in May across the year — August's 5.68 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.7Bright
155.7Bright
165.7Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.4Bright
265.4Bright
275.4Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in August

Is August a good time to visit Opelousas?

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

3.1
Sightseeing
11th-best month of the year
5.5
Beach & pool
6th-best month of the year

August is a weaker month for outdoor sightseeing in Opelousas.

What to pack for Opelousas in August

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

In August, Opelousas sees daytime highs around 91°F and nights near 74°F. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Opelousas 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 Opelousas peaks around July 13 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highExtremeVery highHighModerateJul 13UV 10Dec 20UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7High
Apr10Extreme
May10Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Opelousas 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 Opelousas is worst in July — around 24 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (January, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1624 µg/m³Jan 139 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar12Good
Apr12Good
May16Moderate
Jun20Moderate
Jul24Moderate
Aug19Moderate
Sep15Moderate
Oct11Good
Nov10Good
Dec9Good
Location & terrain

Where is Opelousas?

Opelousas sits at 30.5°N, 92.1°W, 66 ft above sea level, in United States. The nearest listed city is Lafayette, 22 mi away.

Topography around Opelousas

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

Within 2 miles, the terrain around Opelousas has only modest variations in elevation — a maximum elevation change of 98 ft around an average of 72 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 131 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 449 ft.

The land around Opelousas is covered by trees (46%) and grassland (32%) within 2 miles, trees (38%), grassland (34%) and cropland (25%) within 10 miles, and trees (50%) and cropland (29%) within 50 miles.

2 miles
98 ft
10 miles
131 ft
50 miles
449 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Lafayette 22 mi · New Iberia 40 mi · Baton Rouge 53 mi · Zachary 55 mi · Alexandria 58 mi · Central 62 mi · Shenandoah 65 mi · Prairieville 68 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 Opelousas (30.5335°, -92.0815°, elevation 66 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. 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).