Bacchus Marsh in Winter
In winter (June, July and August), Bacchus Marsh sees average daytime highs around 13°C and overnight lows near 6°C, with 121 mm of rain over about 27 wet days across the season. It is the coldest season of the year and the 3rd-wettest season.
Across winter, daytime highs hold fairly steady around 13°C. The sky is clear or mostly clear about 19% of the time across winter, and the air most often feels dry.
Winter is Bacchus Marsh's weakest season of the year to visit on our travel score. For the whole year in context, see Bacchus Marsh's year-round climate.
- Avg daytime high
- 13°C
- coldest season of the year
- Avg overnight low
- 6°C
- Rainfall
- 121 mm
- 27 wet days
- Avg wind
- 14 km/h
- Travel score
- 3.7
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Bacchus Marsh in Winter
Across winter, daytime highs hold fairly steady around 13°C.
A typical winter day in Bacchus Marsh reaches about 13°C and drops to 6°C overnight. The warmest of the three months is August, the coolest July.
Bacchus Marsh weather by month
How the three winter months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 25° / 13° | 46 | 6.2 | 14.3 | 7.5 |
| Feb | 25° / 13° | 44 | 6 | 13.5 | 7.5 |
| Mar | 23° / 12° | 28 | 4.7 | 12.3 | 7.6 |
| Apr | 19° / 9° | 37 | 6.3 | 11.1 | 6.6 |
| May | 16° / 8° | 33 | 6.9 | 10 | 5.1 |
| Jun | 13° / 6° | 43 | 8.6 | 9.4 | 3.7 |
| Jul | 12° / 6° | 35 | 8.8 | 9.7 | 3.4 |
| Aug | 14° / 6° | 43 | 9.6 | 10.5 | 3.9 |
| Sep | 16° / 7° | 52 | 10.3 | 11.7 | 4.9 |
| Oct | 18° / 8° | 58 | 9.8 | 13 | 5.9 |
| Nov | 21° / 9° | 63 | 8.9 | 14 | 6.5 |
| Dec | 23° / 11° | 54 | 7.4 | 14.6 | 7.2 |
Cloud cover in Winter
The sky is clear or mostly clear about 19% of the time across winter.
Chance of precipitation in Winter
Bacchus Marsh gets around 121 mm of rain over 27 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 14 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 9 h 36 min in early June to 11 h 06 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 2.2 kWh/m².
Hazard calendar for Bacchus Marsh
None of Bacchus Marsh's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Bacchus Marsh sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Is winter a good time to visit Bacchus Marsh?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Bacchus Marsh.
What to pack for Bacchus Marsh in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Bacchus Marsh sees daytime highs around 13°C and nights near 6°C. Worth packing: a warm layer and rain gear. About 27 days see rain.
Sea temperature near Bacchus Marsh in Winter
The nearest coast averages about 12°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 44 km away) is warmest in February at about 21°C and coldest in August near 11°C.
It's comfortable for a long swim from Jan 15 to Mar 11 — about 1.8 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 20 | 21 | 20 | 18 | 15 | 13 | 12 | 11 | 12 | 14 | 17 | 19 |
| Comfort | Refreshing | Refreshing | Cool | Cool | Cool | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 20 | Refreshing |
| Feb | 21 | Refreshing |
| Mar | 20 | Cool |
| Apr | 18 | Cool |
| May | 15 | Cool |
| Jun | 13 | Bracing |
| Jul | 12 | Bracing |
| Aug | 11 | Bracing |
| Sep | 12 | Bracing |
| Oct | 14 | Bracing |
| Nov | 17 | Cool |
| Dec | 19 | Cool |
UV index in Bacchus Marsh in Winter
Clear-sky midday UV across winter averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Bacchus Marsh peaks around December 19 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 11 | 11 | 8 | 5 | 3 | 2 | 2 | 3 | 5 | 8 | 10 | 13 |
| Level | Extreme | Extreme | Very high | Moderate | Moderate | Low | Moderate | Moderate | Moderate | Very high | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 11 | Extreme |
| Mar | 8 | Very high |
| Apr | 5 | Moderate |
| May | 3 | Moderate |
| Jun | 2 | Low |
| Jul | 2 | Moderate |
| Aug | 3 | Moderate |
| Sep | 5 | Moderate |
| Oct | 8 | Very high |
| Nov | 10 | Very high |
| Dec | 13 | Extreme |
Where is Bacchus Marsh?
Bacchus Marsh sits at 37.7°S, 144.4°E, 111 m above sea level, in Australia. The nearest listed city is Tarneit, 27 km away.
Topography around Bacchus Marsh
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bacchus Marsh.
Within 3 km, the terrain around Bacchus Marsh has only modest variations in elevation — a maximum elevation change of 169 m around an average of 126 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 678 m; within 80 km, large variations in elevation — a maximum elevation change of 1,037 m.
The land around Bacchus Marsh is covered by grassland (40%) and artificial surfaces (27%) within 3 km, grassland (52%) and trees (29%) within 16 km, and grassland (47%) and trees (24%) within 80 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
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 Bacchus Marsh (-37.6727°, 144.4383°, elevation 111 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.