Mosman weather in October

In October, Mosman sees average daytime highs of 20°C and overnight lows near 15°C, with 59 mm of rain across 8 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 44% of the time in October, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of October to 13 h 18 min by month's end. Set against the rest of the year, October is Mosman's 7th-clearest and 8th-windiest month. For the whole year in context, see Mosman's year-round climate.

Daytime high
20°
7th warmest
Overnight low
15°
6th coldest
Rainfall
59 mm
8 wet days
Daylight
12 h 54 min
6:14 AM – 7:06 PM
Cloud cover
47%
7th clearest
Wind
18 km/h
8th windiest
Solar energy
5.79 kWh/m²
Travel score
6.8
out of 10

Mosman is suburb of Sydney, New South Wales, Australia.

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 20°C through the month.

A typical October day in Mosman reaches about 20°C in the afternoon and slips back to 15°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 24°C. Set against its neighbours, October runs about 1°C warmer than September and about 1°C cooler than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12014
22014
32014
42014
52015
62015
72015
82015
92015
102015
112015
122015
132015
142015
152015
162015
172015
182015
192015
202015
212015
222015
232016
242016
252016
262116
272116
282116
292116
302116
312116

Mosman weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 20°729.3147.2
Feb24° / 20°9310.313.36.9
Mar23° / 19°8211.612.36.8
Apr21° / 17°7710.511.26.7
May19° / 14°799.710.36.4
Jun17° / 12°9710.39.85.6
Jul16° / 11°567.7105.8
Aug17° / 11°536.610.76.4
Sep19° / 13°506.711.86.9
Oct20° / 15°59812.96.8
Nov21° / 17°729.113.86.8
Dec23° / 19°608.614.27.2

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 44% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 20% of October, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17030
27030
37030
47030
56931
66931
76931
86931
96832
106832
116832
126832
136733
146733
156733
166733
176634
186535
196535
206436
216337
226238
236139
246040
255941
265941
275842
285644
295644
305545
315545

Chance of precipitation in October

Any precipitation

Mosman gets around 59 mm of rain over 8 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 26% and peaks near 28% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
122
223
323
423
524
624
725
825
925
1026
1126
1226
1327
1427
1527
1627
1727
1828
1927
2027
2127
2227
2327
2427
2527
2627
2727
2827
2927
3028
3128

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 59% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1732340
2722440
3712450
4702550
5702550
6692650
7682660
8672760
9672760
10662770
11652870
12652870
13642880
14632890
15622990
166129100
175930110
185830120
195731120
205631130
215432140
225233150
235233150
245033161
254934161
264834171
274734171
284734181
294634182
304634182
314634192

Wind in October

Winds average 18 km/h in October.

Across October, daily wind ranges from about 18 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 18 min at the start of October to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over October. Sunrise moves from 6:34 AM to 5:58 AM, and sunset from 6:54 PM to 7:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:346:54
212.46:336:55
312.46:316:56
412.46:306:56
512.56:296:57
612.56:276:58
712.56:266:59
812.66:246:59
912.66:237:00
1012.76:227:01
1112.76:217:02
1212.76:197:03
1312.86:187:03
1412.86:177:04
1512.86:167:05
1612.96:147:06
1712.96:137:07
1812.96:127:08
1913.06:117:08
2013.06:107:09
2113.06:087:10
2213.16:077:11
2313.16:067:12
2413.16:057:13
2513.26:047:14
2613.26:037:14
2713.26:027:15
2813.36:017:16
2913.36:007:17
3013.35:597:18
3113.35:587:19

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.79 kWh/m².

For context, solar energy here swings from a low near 2.45 kWh/m² to a high of 6.64 kWh/m² in January across the year — October's 5.79 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.6Bright
85.6Bright
95.6Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
246.0Bright
256.0Bright
266.0Bright
276.0Intense
286.0Intense
296.0Intense
306.0Intense
316.0Intense
Planning a trip in October

Hazard calendar for Mosman

In seasonPeak

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

Mosman 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 October a good time to visit Mosman?

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

6.8
Sightseeing
5th-best month of the year
3.7
Beach & pool
7th-best month of the year

October is a reasonable time to visit Mosman for sightseeing.

What to pack for Mosman in October

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

In October, Mosman sees daytime highs around 20°C and nights near 15°C. Worth packing: rain gear and sun protection. About 8 days see rain.

rain gearsun protection

Sea temperature near Mosman in October

The nearest coast averages about 19°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 13 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 13 to Jun 7 — about 6.8 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 Mosman in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 Mosman peaks around January 15 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 15UV 12Jun 18UV 2
UV index (midday)Level
Jan12Extreme
Feb12Extreme
Mar9Very high
Apr6High
May4Moderate
Jun2Moderate
Jul3Moderate
Aug4Moderate
Sep5High
Oct8Very high
Nov10Very high
Dec12Extreme
Location & terrain

Where is Mosman?

Mosman sits at 33.8°S, 151.2°E, 24 m above sea level, in Australia. The nearest listed city is Sydney Central Business District, 4.0 km away.

Topography around Mosman

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

Within 3 km, the terrain around Mosman has only modest variations in elevation — a maximum elevation change of 104 m around an average of 26 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 232 m; within 80 km, large variations in elevation — a maximum elevation change of 961 m.

The land around Mosman is covered by water (50%), artificial surfaces (27%) and trees (20%) within 3 km, water (42%), trees (27%) and artificial surfaces (26%) within 16 km, and trees (49%) and water (35%) within 80 km.

3 km
104 m
16 km
232 m
80 km
961 m
treesgrasslandartificial surfaceswater
October weather nearby: Sydney Central Business District 4.0 km · Sydney 4.0 km · Surry Hills 6.0 km · Manly 6.0 km · Chatswood 7.0 km · Randwick 8.0 km · Kensington 9.0 km · Coogee 9.0 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 Mosman (-33.839°, 151.2396°, elevation 24 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).