Prestons weather in September

In September, Prestons sees average daytime highs of 21°C and overnight lows near 9°C, with 37 mm of rain across 5.7 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 22°C by the end. The sky is clear or mostly clear about 53% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 18 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is Prestons's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Prestons's year-round climate.

Daytime high
21°
8th warmest
Overnight low
4th coldest
Rainfall
37 mm
5.7 wet days
Daylight
11 h 48 min
6:57 AM – 6:45 PM
Cloud cover
41%
3rd clearest
Wind
9 km/h
2nd windiest
Solar energy
4.96 kWh/m²
Travel score
7.5
out of 10

Prestons is locality in New South Wales, Australia.

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 20°C in the first days to 22°C by the end.

A typical September day in Prestons reaches about 21°C in the afternoon and slips back to 9°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 27°C. Set against its neighbours, September runs about 3°C warmer than August and about 2°C cooler than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
1198
2208
3208
4208
5208
6208
7208
8208
9208
10208
11218
12218
13219
14219
15219
16219
17219
18219
19229
20229
21229
22229
23229
24229
252210
262210
272210
282210
292310
302310

Prestons weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 18°709.8146.0
Feb27° / 18°8810.413.36.2
Mar25° / 16°6610.412.36.8
Apr23° / 12°426.511.27.5
May20° / 405.310.37.2
Jun17° / 536.49.86.2
Jul17° / 305106.3
Aug18° / 324.810.77.1
Sep21° / 375.711.87.5
Oct23° / 11°517.512.97.4
Nov25° / 14°709.413.86.9
Dec27° / 16°649.414.26.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 30%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17030
27030
37030
47030
57030
67129
77129
87228
97228
107228
117228
127129
137228
147228
157228
167228
177228
187228
197129
207129
217129
227030
237030
247030
256931
266931
276832
286832
296634
306535

Chance of precipitation in September

Any precipitation

Prestons gets around 37 mm of rain over 5.7 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 19% and peaks near 22% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
121
222
322
422
522
621
721
821
920
1020
1120
1219
1319
1418
1518
1617
1717
1817
1917
2017
2117
2217
2317
2417
2518
2618
2718
2819
2919
3019

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 94% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19730
29730
39730
49730
59730
69730
79730
89640
99640
109640
119640
129640
139640
149550
159550
169550
179460
189460
199460
209460
219370
229370
239370
249280
259181
269091
279091
2889101
2989101
3088111

Wind in September

Winds average 9 km/h in September.

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

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 18 min at the start of September to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over September. Sunrise moves from 7:18 AM to 6:37 AM, and sunset from 6:34 PM to 6:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.37:186:34
211.37:176:35
311.37:166:35
411.47:146:36
511.47:136:37
611.47:116:38
711.57:106:38
811.57:096:39
911.57:076:40
1011.67:066:40
1111.67:046:41
1211.67:036:42
1311.77:016:42
1411.77:006:43
1511.86:596:44
1611.86:576:45
1711.86:566:45
1811.96:546:46
1911.96:536:47
2011.96:516:47
2112.06:506:48
2212.06:486:49
2312.06:476:50
2412.16:456:50
2512.16:446:51
2612.26:436:52
2712.26:416:53
2812.26:406:53
2912.36:386:54
3012.36:376:55

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.96 kWh/m².

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 6.54 kWh/m² in December across the year — September's 4.96 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.2Bright
24.3Bright
34.3Bright
44.4Bright
54.4Bright
64.5Bright
74.5Bright
84.6Bright
94.7Bright
104.7Bright
114.8Bright
124.8Bright
134.9Bright
144.9Bright
155.0Bright
165.0Bright
175.0Bright
185.1Bright
195.1Bright
205.2Bright
215.2Bright
225.2Bright
235.3Bright
245.3Bright
255.3Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.5Bright
Planning a trip in September

Hazard calendar for Prestons

In seasonPeak

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

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

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

Is September a good time to visit Prestons?

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

7.5
Sightseeing
1st-best month of the year
4.6
Beach & pool
8th-best month of the year

September is one of the better times to visit Prestons for general sightseeing.

What to pack for Prestons in September

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

In September, Prestons sees daytime highs around 21°C and nights near 9°C. Worth packing: sun protection. About 6 days see rain.

sun protection

Sea temperature near Prestons in September

The nearest coast averages about 18°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 31 km away) is warmest in February at about 23°C and coldest in August near 18°C.

It's comfortable for a long swim from Nov 16 to Jun 2 — about 6.5 months when the water holds above 20°C.

16°18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan23Refreshing
Feb23Refreshing
Mar23Refreshing
Apr22Refreshing
May21Refreshing
Jun19Cool
Jul18Cool
Aug18Cool
Sep18Cool
Oct19Cool
Nov20Refreshing
Dec21Refreshing

UV index in Prestons in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Prestons peaks around January 14 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 14UV 12Jun 18UV 2
UV index (midday)Level
Jan12Extreme
Feb12Extreme
Mar9Very high
Apr6High
May4Moderate
Jun2Moderate
Jul3Moderate
Aug4Moderate
Sep5High
Oct8Very high
Nov10Very high
Dec12Extreme

Air quality in Prestons 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 Prestons is worst in December — around 49 µg/m³ PM2.5 (poor), about 8.1× the cleanest month (June, 6 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorDec 1545 µg/m³Jun 236 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb7Good
Mar7Good
Apr8Good
May8Good
Jun6Good
Jul6Good
Aug8Good
Sep10Good
Oct10Good
Nov25Moderate
Dec49Poor
Location & terrain

Where is Prestons?

Prestons sits at 33.9°S, 150.9°E, 32 m above sea level, in Australia. The nearest listed city is Casula, 3.0 km away.

Topography around Prestons

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

Within 3 km, the terrain around Prestons has only modest variations in elevation — a maximum elevation change of 55 m around an average of 40 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 220 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,361 m.

The land around Prestons is covered by artificial surfaces (63%) and trees (22%) within 3 km, trees (39%), artificial surfaces (32%) and grassland (25%) within 16 km, and trees (59%) and water (25%) within 80 km.

3 km
55 m
16 km
220 m
80 km
1,361 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Casula 3.0 km · Liverpool 6.0 km · Cabramatta 8.0 km · Fairfield 11 km · Yagoona 14 km · Greystanes 15 km · Bankstown 15 km · Merrylands 16 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 Prestons (-33.9419°, 150.8717°, elevation 32 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).