Gulfport weather in September

In September, Gulfport sees average daytime highs of 82°F and overnight lows near 77°F, with 5.6 in of rain across 12.1 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 83°F in the first days to 80°F by the end. The sky is clear or mostly clear about 50% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Gulfport's 4th-clearest and 9th-windiest month. For the whole year in context, see Gulfport's year-round climate.

Daytime high
82°
4th warmest
Overnight low
77°
9th coldest
Rainfall
5.6 in
12.1 wet days
Daylight
12 h 12 min
5:45 AM – 5:56 PM
Cloud cover
46%
4th clearest
Wind
10 mph
9th windiest
Solar energy
5.05 kWh/m²
Travel score
6.1
out of 10

Gulfport is city in Mississippi, USA.

Density
433/km²
people per km²
Founded
1887

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 83°F in the first days to 80°F by the end.

A typical September day in Gulfport reaches about 82°F in the afternoon and slips back to 77°F overnight — a 5°F spread between the day's warmth and the night's chill. On most days the high lands between 79°F and 85°F. Set against its neighbours, September runs about 2°F cooler than August and about 7°F warmer than October.

60°70°80°90°151015202530
Avg high (°F)Avg low (°F)
18379
28379
38379
48379
58378
68378
78378
88378
98378
108378
118378
128378
138278
148277
158277
168277
178277
188277
198276
208176
218176
228176
238175
248175
258075
268074
278074
288074
298074
307973

How September really feels in Gulfport

Once humidity and wind are folded in, September averages 4 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
4
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

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

Gulfport weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan57° / 50°5.19.810.34.2
Feb60° / 53°4.88.810.94.9
Mar65° / 59°5.39.311.86.2
Apr71° / 65°4.27.512.77.2
May78° / 73°3.88.913.57.2
Jun83° / 78°5.413.613.95.6
Jul84° / 80°5.516.413.84.7
Aug84° / 80°6.416.913.14.7
Sep82° / 77°5.612.112.26.1
Oct75° / 69°3.77.711.37.5
Nov66° / 59°4.07.310.56.8
Dec60° / 53°4.69.710.15.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15644
25644
35644
45743
55842
65941
75941
85941
96040
106139
116139
126337
136337
146436
156436
166436
176436
186436
196436
206436
216535
226535
236535
246634
256634
266634
276733
286733
296733
306733

Chance of precipitation in September

Any precipitation

Gulfport gets around 5.6 in of rain over 12.1 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 50% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
150
250
349
449
548
648
747
846
945
1044
1143
1243
1342
1442
1541
1641
1740
1839
1939
2038
2137
2236
2335
2434
2533
2632
2731
2831
2930
3029

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 88% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
101284742
201294939
301295137
4012105235
5022105333
6022115431
7022115629
8023125528
9023125726
10033135625
11033145624
12034155523
13034155622
14034165522
15145175221
16145185121
17145185121
18145195120
19256204820
20266204719
21266214618
22377214517
23387214416
24498224315
25598224214
265108224213
276109224112
2861110224011
2971110224010
307121122399

Wind in September

Winds average 10 mph in September.

Across September, daily wind ranges from about 9 mph on the calmest days to 11 mph at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (mph)Feels
19light 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
2011light breeze
2111light breeze
2211light breeze
2311light breeze
2411light breeze
2511light breeze
2611light breeze
2711light breeze
2811light breeze
2911light breeze
3011light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 36 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over September. Sunrise moves from 5:37 AM to 5:53 AM, and sunset from 6:15 PM to 5:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:376:15
212.65:376:14
312.65:386:13
412.65:386:12
512.55:396:10
612.55:406:09
712.55:406:08
812.45:416:07
912.45:416:05
1012.45:426:04
1112.35:426:03
1212.35:436:01
1312.35:446:00
1412.25:445:59
1512.25:455:57
1612.25:455:56
1712.15:465:55
1812.15:465:53
1912.15:475:52
2012.15:485:51
2112.05:485:50
2212.05:495:48
2312.05:495:47
2411.95:505:46
2511.95:505:44
2611.95:515:43
2711.85:525:42
2811.85:525:40
2911.85:535:39
3011.75:535:38

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.05 kWh/m².

For context, solar energy here swings from a low near 2.78 kWh/m² to a high of 6.46 kWh/m² in May across the year — September's 5.05 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Gulfport

In seasonPeak

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

Gulfport 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 September a good time to visit Gulfport?

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

6.1
Sightseeing
6th-best month of the year
6.6
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Gulfport for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Gulfport in September

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

In September, Gulfport sees daytime highs around 82°F and nights near 77°F. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

Sea temperature near Gulfport in September

The nearest coast averages about 83°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 86°F and coldest in January near 57°F.

It's comfortable for a long swim from Apr 3 to Nov 14 — about 7.4 months when the water holds above 68°F.

50°60°70°80°90°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan57Bracing
Feb59Bracing
Mar64Cool
Apr71Refreshing
May78Warm
Jun83Tropical
Jul85Tropical
Aug86Tropical
Sep83Tropical
Oct76Warm
Nov67Cool
Dec61Cool

UV index in Gulfport in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Gulfport peaks around July 12 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 highVery highHighModerateJul 12UV 10Dec 19UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7High
Apr10Very high
May10Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Gulfport in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Gulfport is worst in July — around 21 µg/m³ PM2.5 (moderate), about 3.7× the cleanest month (November, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1721 µg/m³Nov 206 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar8Good
Apr9Good
May12Good
Jun17Moderate
Jul21Moderate
Aug17Moderate
Sep10Good
Oct6Good
Nov6Good
Dec6Good
Location & terrain

Where is Gulfport?

Gulfport sits at 30.4°N, 89.1°W, 20 ft above sea level, in United States. The nearest listed city is West Gulfport, 2.5 mi away.

Topography around Gulfport

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

Within 2 miles, the terrain around Gulfport has only modest variations in elevation — a maximum elevation change of 66 ft around an average of 16 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 167 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 423 ft.

The land around Gulfport is covered by water (40%), trees (23%) and artificial surfaces (21%) within 2 miles, water (48%) and trees (32%) within 10 miles, and trees (46%) and water (42%) within 50 miles.

2 miles
66 ft
10 miles
167 ft
50 miles
423 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: West Gulfport 2.5 mi · Long Beach 3.7 mi · Biloxi 12 mi · Ocean Springs 16 mi · Gautier 29 mi · Pascagoula 32 mi · Slidell 42 mi · Tillmans Corner 57 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 Gulfport (30.3674°, -89.0928°, 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. 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).