Gladstone weather in September

In September, Gladstone sees average daytime highs of 24°C and overnight lows near 17°C, with 21 mm of rain across 3.2 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 24°C by the end. The sky is clear or mostly clear about 76% of the time in September, and the air most often feels humid.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Gladstone's 2nd-clearest and 10th-windiest month. For the whole year in context, see Gladstone's year-round climate.

Daytime high
24°
9th warmest
Overnight low
17°
4th coldest
Rainfall
21 mm
3.2 wet days
Daylight
11 h 54 min
5:53 AM – 5:45 PM
Cloud cover
26%
2nd clearest
Wind
12 km/h
10th windiest
Solar energy
5.83 kWh/m²
Travel score
8.7
out of 10

Gladstone is city in Queensland, Australia.

Air quality
Good
PM2.5 7.1 µg/m³ · 2019

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 23°C in the first days to 24°C by the end.

A typical September day in Gladstone reaches about 24°C in the afternoon and slips back to 17°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 25°C. Set against its neighbours, September runs about 2°C warmer than August and about 2°C cooler than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12315
22316
32316
42316
52316
62316
72316
82316
92316
102316
112316
122416
132416
142416
152416
162417
172417
182417
192417
202417
212417
222417
232417
242417
252418
262418
272418
282418
292418
302518

Gladstone weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°11411.913.35.6
Feb29° / 24°13112.312.85.4
Mar28° / 22°838.512.26.7
Apr26° / 20°515.211.57.7
May24° / 17°404.510.98.2
Jun22° / 15°363.810.68.1
Jul21° / 13°293.110.78.2
Aug22° / 14°232.811.28.5
Sep24° / 17°213.211.98.7
Oct25° / 19°415.312.68.1
Nov27° / 22°406.313.27.4
Dec28° / 23°969.813.46.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 76% 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 11%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18416
28416
38416
48614
58614
68713
78713
88812
98911
108911
118911
128911
138911
148911
15919
16919
17919
18919
19919
20919
219010
229010
239010
24919
25919
26919
27919
28919
29919
30919

Chance of precipitation in September

Any precipitation

Gladstone gets around 21 mm of rain over 3.2 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 11% and peaks near 14% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
114
214
314
413
513
612
712
811
911
1010
1110
1210
1310
149
159
169
179
189
199
209
219
229
2310
2410
2510
2610
2710
2810
2910
3010

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
123403070
222403170
322403170
421403180
520403280
620403280
719403290
819403290
9184032100
10184032100
11173932110
12173932120
13163933120
14163834130
15153734130
16143635140
17143536150
18133438160
19123239160
20113140171
21113041181
22102942181
23102843191
2492743201
2592644201
2682544211
2782445222
2872445232
2972345242
3062245242

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over September. Sunrise moves from 6:09 AM to 5:38 AM, and sunset from 5:40 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:095:40
211.56:085:40
311.66:075:41
411.66:065:41
511.66:055:41
611.66:045:42
711.76:035:42
811.76:025:42
911.76:015:43
1011.76:005:43
1111.75:595:44
1211.85:585:44
1311.85:575:44
1411.85:565:45
1511.85:545:45
1611.95:535:45
1711.95:525:46
1811.95:515:46
1911.95:505:46
2012.05:495:47
2112.05:485:47
2212.05:475:47
2312.05:465:48
2412.15:455:48
2512.15:445:48
2612.15:435:49
2712.15:425:49
2812.15:405:49
2912.25:395:50
3012.25:385:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.83 kWh/m².

For context, solar energy here swings from a low near 3.62 kWh/m² to a high of 6.94 kWh/m² in December across the year — September's 5.83 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.3Bright
45.3Bright
55.3Bright
65.4Bright
75.5Bright
85.5Bright
95.6Bright
105.6Bright
115.7Bright
125.7Bright
135.8Bright
145.8Bright
155.8Bright
165.9Bright
175.9Bright
186.0Bright
196.0Intense
206.0Intense
216.1Intense
226.1Intense
236.1Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Gladstone

In seasonPeak

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

Gladstone sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Gladstone's rainy season runs December–March, when most of the year's rain falls.

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

Is September a good time to visit Gladstone?

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

8.7
Sightseeing
1st-best month of the year
7.1
Beach & pool
5th-best month of the year

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

What to pack for Gladstone in September

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

In September, Gladstone sees daytime highs around 24°C and nights near 17°C. Worth packing: light clothes and sun protection. About 3 days see rain.

light clothessun protection

Sea temperature near Gladstone in September

The nearest coast averages about 22°C 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 February at about 28°C and coldest in August near 20°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar27Warm
Apr25Warm
May23Refreshing
Jun21Refreshing
Jul20Refreshing
Aug20Refreshing
Sep22Refreshing
Oct23Refreshing
Nov25Warm
Dec27Warm

UV index in Gladstone in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Gladstone peaks around February 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 11UV 15Jun 20UV 5
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar12Extreme
Apr10Very high
May7High
Jun5High
Jul6High
Aug7Very high
Sep9Very high
Oct11Extreme
Nov12Extreme
Dec13Extreme

Air quality in Gladstone 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 Gladstone is worst in November — around 17 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (June, 4 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Gladstone's WHO annual average of 7.1 µg/m³.

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodNov 1616 µg/m³Jun 184 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb6Good
Mar6Good
Apr5Good
May4Good
Jun4Good
Jul4Good
Aug6Good
Sep9Good
Oct9Good
Nov17Moderate
Dec10Good
Location & terrain

Where is Gladstone?

Gladstone sits at 23.8°S, 151.3°E, 21 m above sea level, in Australia. The nearest listed city is Rockhampton, 93 km away.

MaryboroughGympieNoosaSunshine CoastMaroochydore

Topography around Gladstone

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Gladstone.

Within 3 km, the terrain around Gladstone has only modest variations in elevation — a maximum elevation change of 124 m around an average of 12 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 326 m; within 80 km, large variations in elevation — a maximum elevation change of 955 m.

The land around Gladstone is covered by water (32%) and artificial surfaces (28%) within 3 km, trees (43%) and water (36%) within 16 km, and water (43%) and trees (37%) within 80 km.

3 km
124 m
16 km
326 m
80 km
955 m
treesgrasslandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Rockhampton 93 km · Bundaberg 158 km · Hervey Bay 221 km · Maryborough 238 km · Gympie 296 km · Noosa 338 km · Sunshine Coast 362 km · Maroochydore 363 km

Australia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type I
230 V · 50 Hz
Prices
≈ 90% of US
price level, 2025
GDP per capita
$65,130
2025
Happiness
6.9 / 10
World Happiness, 2025
Homicide rate
0.9
per 100k, 2023
Road deaths
4.9
per 100k/yr, 2019
Income group
High
World Bank
Religion
none 38%Roman Catholic 20%Protestant 18%other Christian 4%

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 Gladstone (-23.8485°, 151.2577°, elevation 21 m), 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).