Climate and average weather in Horsham

In Horsham, the summers are hot, fairly dry, and mostly clear and the winters are cool and partly cloudy.

Best: early January to early May

Over the course of the year, the temperature in Horsham typically varies from 5°C to 29°C, and is rarely below 1°C or above 37°C. January is the hottest month of the year, while July is the coldest.

Based on the travel score, the best times of year to visit Horsham for warm-weather activities are from early January to early May and early October to late December.

Hottest
Jan
29°
Coldest
Jul
Wettest
Sep
47 mm
Driest
Mar
20 mm
Rain / yr
427 mm
71 wet days
Daylight
9.5–14.5 h
shortest–longest
Elevation
133 m
36.7°S
Clearest
Feb
39% cloud

Horsham is regional city in Victoria, Australia.

Density
711/km²
people per km²

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

Horsham weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around early January to early May.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Horsham, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.5 months, from December 1 to March 17, with daily high temperatures above 25°C. The hottest month of the year in Horsham is January, with an average high of 29°C and low of 14°C.

The cool season lasts 3.7 months, from May 21 to September 11, with daily high temperatures below 16°C. The coldest month of the year in Horsham is July, with an average low of 5°C and high of 13°C.

Days typically run about 12°C warmer than nights, with the widest day–night swing (around 15°C) in January.

10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2914
Feb2814
Mar2512
Apr219
May177
Jun146
Jul135
Aug145
Sep166
Oct207
Nov2310
Dec2712

Average hourly temperature in Horsham

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on January afternoons, near 29°C, and coldest before dawn in July, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Horsham weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 14°323.814.26.5
Feb28° / 14°223.213.47.0
Mar25° / 12°203.312.38.0
Apr21° / 264.311.17.3
May17° / 376.110.15.6
Jun14° / 447.79.54.0
Jul13° / 428.69.73.6
Aug14° / 448.910.64.1
Sep16° / 478.411.85.3
Oct20° / 376.112.96.7
Nov23° / 10°395.8147.5
Dec27° / 12°374.814.57.5

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Horsham gets about 427 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.

The wetter season lasts 5.8 months, from around May 19 to Nov 10, peaking in August at about 31% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Mar 4.

September is the wettest month by volume, with 47 mm over about 8 wet days; March is the driest, with 20 mm.

0%10%20%30%40%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetAug 8 · 31%Mar 4 · 10%
Rain on a day (%)Rain days
Jan124
Feb113
Mar113
Apr144
May196
Jun268
Jul289
Aug299
Sep278
Oct216
Nov196
Dec165

Monthly rainfall

Over a full year, Horsham collects about 427 mm of rain across 71 wet days — roughly 36 mm in an average month.

It doesn’t fall evenly. September is the wettest month with 47 mm, while March is the driest at just 20 mm. The three wettest months alone bring about 32% of the year’s total.

0255075JanFebMarAprMayJunJulAugSepOctNovDec322220263744424447373937
Rainfall (mm)Rain days
Jan324
Feb223
Mar203
Apr264
May376
Jun448
Jul429
Aug449
Sep478
Oct376
Nov396
Dec375

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Horsham, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around November 15 and lasts for 4.9 months, ending around April 13. The clearest month is February, when the sky is clear, mostly clear, or partly cloudy 68% of the time on average.

The cloudier part of the year begins around April 14 and lasts for 7.1 months, ending around November 14. The cloudiest month is June, when it is overcast or mostly cloudy 64% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecJan 21 · 69%Jun 11 · 35%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan6733
Feb6832
Mar6139
Apr4753
May3763
Jun3664
Jul3664
Aug4159
Sep3961
Oct4258
Nov4753
Dec5545

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around January 1, brings about 14 h 30 min of light; the shortest, around June 11, only 9 h 30 min — a swing of roughly 5 hours.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan14.26:338:48
Feb13.47:048:28
Mar12.37:327:50
Apr11.18:007:03
May10.18:266:29
Jun9.58:466:17
Jul9.78:456:28
Aug10.68:186:53
Sep11.87:327:19
Oct12.96:487:45
Nov14.06:178:16
Dec14.56:128:42

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Horsham averages about 10 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 5 and 17 days.

The sunnier stretch runs 5.2 months, from around Nov 13 to Apr 19. The sunniest month is February, with roughly 17 sunny days (bright).

The greyest month is August, down near 6 sunny days — about 67% fewer than the February peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightFeb 1817 daysAug 15 days
Sunny daysSky
Jan16Bright
Feb16Bright
Mar14Mixed
Apr10Mixed
May6Gloomy
Jun5Gloomy
Jul5Gloomy
Aug6Gloomy
Sep6Gloomy
Oct8Gloomy
Nov9Mixed
Dec12Mixed

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

In Horsham, the air stays dry or comfortable essentially all year. Even in February, the muggiest month, it feels humid or worse only about 7% of the time — humidity is not something you need to plan around here.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDeccomfortabledry
Dry (%)Comfortable (%)Humid (%)Muggy (%)
Jan851032
Feb811251
Mar89820
Apr97310
May98200
Jun100000
Jul100000
Aug100000
Sep99100
Oct97300
Nov93610
Dec91630

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Wind in Horsham is steady company: average speeds sit near 14 km/hlight breeze — in every month of the year, with no meaningful windy or calm season.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeDec 8 · 15 km/hApr 24 · 12 km/h
Wind speed (km/h)Feels
Jan15light breeze
Feb14light breeze
Mar13light breeze
Apr12light breeze
May12light breeze
Jun13light breeze
Jul14light breeze
Aug14light breeze
Sep14light breeze
Oct15light breeze
Nov15light breeze
Dec15light breeze

Best time to visit Horsham

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Horsham throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around mid January, Horsham is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Horsham for general outdoor tourist activities is from early October to early May, with a peak score in the second week of March.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationMar 14 · 8.0

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan6.6good
Feb7.0good
Mar7.9ideal
Apr7.3good
May5.6good
Jun4.0fair
Jul3.6fair
Aug4.1fair
Sep5.3fair
Oct6.7good
Nov7.4good
Dec7.4good

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Horsham for hot-weather activities is from late November to late March, with a peak score in the third week of January.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationJan 21 · 8.4

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Horsham, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

For a warm-season trip around January (highs near 29°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 13°C), pack a warm layer and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In January, Horsham sees daytime highs around 29°C and nights near 14°C. Pack light clothes and sun protection. About 4 days see rain.

UV index (midday) in Horsham by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Horsham peaks around December 20 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateModerateHighVery highExtremeDec 20UV 13Jun 18UV 2
UV index (midday)Level
Jan12Extreme
Feb11Extreme
Mar9Very high
Apr5Moderate
May3Moderate
Jun2Low
Jul2Moderate
Aug3Moderate
Sep5Moderate
Oct7Very high
Nov10Very high
Dec13Extreme

Average hourly UV index in Horsham

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in December the burn window is concentrated in the middle of the day: about 9.5 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan96.5
Feb8.56
Mar74.5
Apr50
May00
Jun00
Jul00
Aug2.50
Sep50
Oct74
Nov8.56
Dec9.57
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Horsham is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May990
Jun960
Jul960
Aug960
Sep970
Oct980
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Horsham banks about 1,771 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

05001,0001,5002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan355
Feb313
Mar268
Apr148
May54
Jun1
Jul0
Aug0
Sep34
Oct110
Nov198
Dec288

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Horsham receives about 4.7 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 1.9 and 8.0 kWh/m².

The brighter stretch of the year lasts 5.8 months, from around Sep 29 to Mar 25. The brightest month is January, averaging about 7.7 kWh/m² (intense).

The dimmest month is June, down near 1.9 kWh/m² — roughly 75% less than the January peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseJan 28.0 kWhJun 211.9 kWh
Solar energy (kWh/m²)Level
Jan7.8Intense
Feb6.8Intense
Mar5.3Bright
Apr3.7Moderate
May2.4Moderate
Jun1.9Dim
Jul2.0Moderate
Aug2.9Moderate
Sep4.1Bright
Oct5.6Bright
Nov6.8Intense
Dec7.5Intense

Where is Horsham?

Horsham sits at 36.7°S, 142.2°E, 133 m above sea level, in Australia. The nearest listed city is Ballarat, 174 km away.

Bacchus MarshEchucaLaraSunbury

Topography around Horsham

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

Within 3 km, the terrain around Horsham has only modest variations in elevation — a maximum elevation change of 12 m around an average of 129 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 50 m; within 80 km, large variations in elevation — a maximum elevation change of 1,076 m.

The land around Horsham is covered by cropland (46%) and artificial surfaces (36%) within 3 km, cropland (80%) within 16 km, and cropland (55%) and grassland (22%) within 80 km.

3 km
12 m
16 km
50 m
80 km
1,076 m
treesshrubsgrasslandcroplandartificial surfaceswater
Nearby: Ballarat 174 km · Mount Gambier 177 km · Bendigo 185 km · Warrnambool 187 km · Bacchus Marsh 225 km · Echuca 237 km · Lara 244 km · Sunbury 244 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 Horsham (-36.7113°, 142.1998°, elevation 133 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. 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).