Cessnock weather in September

In September, Cessnock sees average daytime highs of 22°C and overnight lows near 9°C, with 36 mm of rain across 5.9 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 21°C in the first days to 24°C by the end. The sky is clear or mostly clear about 54% 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 Cessnock's 2nd-clearest and 1st-windiest month. For the whole year in context, see Cessnock's year-round climate.

Daytime high
22°
8th warmest
Overnight low
4th coldest
Rainfall
36 mm
5.9 wet days
Daylight
11 h 48 min
6:55 AM – 6:43 PM
Cloud cover
39%
2nd clearest
Wind
11 km/h
1st windiest
Solar energy
4.97 kWh/m²
Travel score
7.7
out of 10

Cessnock is city 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 21°C in the first days to 24°C by the end.

A typical September day in Cessnock reaches about 22°C in the afternoon and slips back to 9°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°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)
1208
2218
3218
4218
5218
6219
7219
8219
9219
10229
11229
12229
13229
14229
15229
16229
17239
18239
192310
202310
212310
222310
232310
242310
252410
262410
272410
282410
292411
302411

Cessnock 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
Jan30° / 18°6910.113.95.1
Feb29° / 18°829.913.25.6
Mar27° / 16°6710.312.26.6
Apr24° / 12°447.311.27.4
May20° / 396.710.37.1
Jun17° / 526.89.96.3
Jul17° / 345.410.16.4
Aug19° / 304.610.87.3
Sep22° / 365.911.87.7
Oct25° / 12°537.812.87.4
Nov27° / 14°739.513.76.6
Dec28° / 16°741014.15.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 29%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16931
26931
36931
47030
57030
67129
77129
87129
97228
107228
117228
127327
137327
147327
157426
167426
177426
187426
197426
207426
217327
227327
237327
247228
257129
267129
276931
286931
296733
306733

Chance of precipitation in September

Any precipitation

Cessnock gets around 36 mm of rain over 5.9 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 20% and peaks near 22% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
121
222
322
422
522
622
722
822
921
1021
1120
1220
1319
1419
1519
1618
1718
1818
1918
2018
2118
2218
2318
2418
2518
2618
2718
2818
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 92% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19730
29730
39640
49640
59640
69640
79640
89640
99640
109640
119550
129550
139550
149460
159460
169370
179370
189280
199181
209091
219091
2289101
2389101
2488111
2588111
2687121
2786122
2885132
2985132
3085132

Wind in September

Winds average 11 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 7:16 AM to 6:35 AM, and sunset from 6:33 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.37:166:33
211.37:146:34
311.47:136:34
411.47:126:35
511.47:106:36
611.57:096:36
711.57:076:37
811.57:066:38
911.67:056:38
1011.67:036:39
1111.67:026:40
1211.77:016:40
1311.76:596:41
1411.76:586:42
1511.86:566:42
1611.86:556:43
1711.86:536:44
1811.96:526:44
1911.96:516:45
2011.96:496:46
2112.06:486:46
2212.06:466:47
2312.06:456:48
2412.16:446:48
2512.16:426:49
2612.16:416:50
2712.26:396:50
2812.26:386:51
2912.36:376:52
3012.36:356:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.97 kWh/m².

For context, solar energy here swings from a low near 2.49 kWh/m² to a high of 6.52 kWh/m² in January across the year — September's 4.97 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.4Bright
44.4Bright
54.5Bright
64.5Bright
74.6Bright
84.6Bright
94.7Bright
104.7Bright
114.8Bright
124.8Bright
134.9Bright
144.9Bright
155.0Bright
165.0Bright
175.1Bright
185.1Bright
195.2Bright
205.2Bright
215.2Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.5Bright
Planning a trip in September

Hazard calendar for Cessnock

In seasonPeak

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

Cessnock 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 Cessnock?

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

7.7
Sightseeing
1st-best month of the year
5.5
Beach & pool
8th-best month of the year

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

What to pack for Cessnock in September

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

In September, Cessnock sees daytime highs around 22°C and nights near 9°C. Worth packing: light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Cessnock 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 41 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 7 — about 6.7 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
Jun20Cool
Jul19Cool
Aug18Cool
Sep18Cool
Oct19Cool
Nov20Refreshing
Dec21Refreshing

UV index in Cessnock in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cessnock peaks around January 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 17UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar9Very high
Apr6High
May4Moderate
Jun2Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov10Very high
Dec12Extreme

Air quality in Cessnock 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 Cessnock is worst in December — around 23 µg/m³ PM2.5 (moderate), about 4.3× the cleanest month (June, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateDec 1621 µg/m³Jun 205 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb7Good
Mar7Good
Apr6Good
May6Good
Jun5Good
Jul6Good
Aug7Good
Sep8Good
Oct8Good
Nov11Good
Dec23Moderate
Location & terrain

Where is Cessnock?

Cessnock sits at 32.8°S, 151.4°E, 71 m above sea level, in Australia. The nearest listed city is Maitland, 22 km away.

Topography around Cessnock

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

Within 3 km, the terrain around Cessnock has only modest variations in elevation — a maximum elevation change of 70 m around an average of 82 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 587 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,482 m.

The land around Cessnock is covered by trees (46%), artificial surfaces (26%) and grassland (25%) within 3 km, trees (63%) and grassland (32%) within 16 km, and trees (58%) and grassland (20%) within 80 km.

3 km
70 m
16 km
587 m
80 km
1,482 m
treesgrasslandartificial surfacesbare terrainwaterwetland
September weather nearby: Maitland 22 km · Newcastle 41 km · Central Coast 66 km · Umina Beach 77 km · Muswellbrook 77 km · Pittwater 93 km · Hornsby 100 km · Wahroonga 101 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 Cessnock (-32.8321°, 151.3562°, elevation 71 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).