Climate and average weather in Bunbury
In Bunbury, the summers are warm, dry, and clear and the winters are mild and partly cloudy.
Over the course of the year, the temperature in Bunbury typically varies from 10°C to 28°C, and is rarely below 6°C or above 33°C. February is the hottest month of the year, while July is the coldest.
Based on the travel score, the best time of year to visit Bunbury for warm-weather activities is from mid October to early May.
- Hottest
- Feb
- 28°
- Coldest
- Jul
- 10°
- Wettest
- Jul
- 127 mm
- Driest
- Dec
- 11 mm
- Rain / yr
- 662 mm
- 80 wet days
- Daylight
- 9.8–14.2 h
- shortest–longest
- Elevation
- 5 m
- 33.3°S
- Clearest
- Jan
- 25% cloud
Bunbury is city and metropolitan area in Western Australia.
- Air quality
- Good
- PM2.5 8.4 µg/m³ · 2016
- Density
- 551/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Bunbury 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 mid October to early May.
Temperature through the year
Daily average highs and lows in Bunbury, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 3.4 months, from December 10 to March 22, with daily high temperatures above 25°C. The hottest month of the year in Bunbury is February, with an average high of 28°C and low of 17°C.
The cool season lasts 4.3 months, from May 27 to October 4, with daily high temperatures below 18°C. The coldest month of the year in Bunbury is July, with an average low of 10°C and high of 16°C.
Days typically run about 9°C warmer than nights, with the widest day–night swing (around 11°C) in January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 26 | 23 | 19 | 17 | 16 | 16 | 17 | 20 | 23 | 26 |
| Avg low (°C) | 17 | 17 | 16 | 14 | 12 | 11 | 10 | 10 | 10 | 11 | 13 | 15 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 28 | 17 |
| Feb | 28 | 17 |
| Mar | 26 | 16 |
| Apr | 23 | 14 |
| May | 19 | 12 |
| Jun | 17 | 11 |
| Jul | 16 | 10 |
| Aug | 16 | 10 |
| Sep | 17 | 10 |
| Oct | 20 | 11 |
| Nov | 23 | 13 |
| Dec | 26 | 15 |
Average hourly temperature in Bunbury
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 February afternoons, near 28°C, and coldest before dawn in July, near 10°C.
Bunbury weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 17° | 11 | 1.9 | 14 | 8.2 |
| Feb | 28° / 17° | 13 | 1.6 | 13.2 | 8.1 |
| Mar | 26° / 16° | 22 | 3.1 | 12.3 | 8.2 |
| Apr | 23° / 14° | 30 | 4.9 | 11.2 | 7.8 |
| May | 19° / 12° | 87 | 8.4 | 10.3 | 6.5 |
| Jun | 17° / 11° | 117 | 11.6 | 9.8 | 5.3 |
| Jul | 16° / 10° | 127 | 13.7 | 10 | 4.7 |
| Aug | 16° / 10° | 106 | 12.3 | 10.8 | 4.9 |
| Sep | 17° / 10° | 74 | 9.9 | 11.8 | 5.6 |
| Oct | 20° / 11° | 34 | 5.5 | 12.8 | 7.0 |
| Nov | 23° / 13° | 29 | 4.9 | 13.7 | 7.9 |
| Dec | 26° / 15° | 11 | 1.9 | 14.2 | 8.5 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Bunbury gets about 662 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 5.2 months, from around May 4 to Oct 7, peaking in July at about 45% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 1.
July is the wettest month by volume, with 127 mm over about 14 wet days; December is the driest, with 11 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 6 | 6 | 10 | 16 | 27 | 38 | 43 | 40 | 33 | 19 | 15 | 7 |
| Rain days | 2 | 2 | 3 | 5 | 8 | 12 | 14 | 12 | 10 | 6 | 5 | 2 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 6 | 2 |
| Feb | 6 | 2 |
| Mar | 10 | 3 |
| Apr | 16 | 5 |
| May | 27 | 8 |
| Jun | 38 | 12 |
| Jul | 43 | 14 |
| Aug | 40 | 12 |
| Sep | 33 | 10 |
| Oct | 19 | 6 |
| Nov | 15 | 5 |
| Dec | 7 | 2 |
Monthly rainfall
Over a full year, Bunbury collects about 662 mm of rain across 80 wet days — roughly 55 mm in an average month.
It doesn’t fall evenly. July is the wettest month with 127 mm, while December is the driest at just 11 mm. The three wettest months alone bring about 53% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 11 | 13 | 22 | 30 | 87 | 117 | 127 | 106 | 74 | 34 | 29 | 11 |
| Rain days | 2 | 2 | 3 | 5 | 8 | 12 | 14 | 12 | 10 | 6 | 5 | 2 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 11 | 2 |
| Feb | 13 | 2 |
| Mar | 22 | 3 |
| Apr | 30 | 5 |
| May | 87 | 8 |
| Jun | 117 | 12 |
| Jul | 127 | 14 |
| Aug | 106 | 12 |
| Sep | 74 | 10 |
| Oct | 34 | 6 |
| Nov | 29 | 5 |
| Dec | 11 | 2 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Bunbury, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.
The clearer part of the year begins around November 13 and lasts for 4.6 months, ending around April 1. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 85% of the time on average.
The cloudier part of the year begins around April 2 and lasts for 7.4 months, ending around November 12. The cloudiest month is September, when it is overcast or mostly cloudy 44% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 85 | 83 | 74 | 61 | 59 | 58 | 57 | 57 | 56 | 59 | 68 | 79 |
| Cloudier (%) | 15 | 17 | 26 | 39 | 41 | 42 | 43 | 43 | 44 | 41 | 32 | 21 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 85 | 15 |
| Feb | 83 | 17 |
| Mar | 74 | 26 |
| Apr | 61 | 39 |
| May | 59 | 41 |
| Jun | 58 | 42 |
| Jul | 57 | 43 |
| Aug | 57 | 43 |
| Sep | 56 | 44 |
| Oct | 59 | 41 |
| Nov | 68 | 32 |
| Dec | 79 | 21 |
Daylight, sunrise and sunset
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 12 min of light; the shortest, around June 10, only 9 h 48 min — a swing of roughly 4 h 24 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.0 | 13.2 | 12.3 | 11.2 | 10.3 | 9.8 | 10.0 | 10.8 | 11.8 | 12.8 | 13.7 | 14.2 |
| Sunrise (AM) | 5:27 | 5:55 | 6:19 | 6:42 | 7:05 | 7:23 | 7:23 | 6:59 | 6:18 | 5:37 | 5:10 | 5:08 |
| Sunset (PM) | 7:26 | 7:09 | 6:35 | 5:53 | 5:22 | 5:12 | 5:23 | 5:44 | 6:06 | 6:28 | 6:55 | 7:19 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 14.0 | 5:27 | 7:26 |
| Feb | 13.2 | 5:55 | 7:09 |
| Mar | 12.3 | 6:19 | 6:35 |
| Apr | 11.2 | 6:42 | 5:53 |
| May | 10.3 | 7:05 | 5:22 |
| Jun | 9.8 | 7:23 | 5:12 |
| Jul | 10.0 | 7:23 | 5:23 |
| Aug | 10.8 | 6:59 | 5:44 |
| Sep | 11.8 | 6:18 | 6:06 |
| Oct | 12.8 | 5:37 | 6:28 |
| Nov | 13.7 | 5:10 | 6:55 |
| Dec | 14.2 | 5:08 | 7:19 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Bunbury averages about 14 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 8 and 23 days.
The sunnier stretch runs 5.4 months, from around Oct 26 to Apr 7. The sunniest month is January, with roughly 22 sunny days (bright).
The greyest month is July, down near 8 sunny days — about 64% fewer than the January peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 23 | 20 | 19 | 13 | 10 | 8 | 8 | 8 | 9 | 12 | 15 | 20 |
| Sky | Bright | Bright | Bright | Mixed | Mixed | Mixed | Mixed | Gloomy | Mixed | Mixed | Bright | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 23 | Bright |
| Feb | 20 | Bright |
| Mar | 19 | Bright |
| Apr | 13 | Mixed |
| May | 10 | Mixed |
| Jun | 8 | Mixed |
| Jul | 8 | Mixed |
| Aug | 8 | Gloomy |
| Sep | 9 | Mixed |
| Oct | 12 | Mixed |
| Nov | 15 | Bright |
| Dec | 20 | Bright |
Humidity comfort
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 Bunbury, how humid it feels changes noticeably over the year.
The more humid part of the year lasts 4.2 months, from around December 22 to April 29. The muggiest month is February, when the air feels humid, muggy or worse about 19% of the time.
The most comfortable stretch runs from around April 30 to December 21, and July is the most comfortable month — the air is dry or comfortable 100% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 52 | 46 | 52 | 64 | 80 | 92 | 96 | 96 | 95 | 87 | 79 | 68 |
| Comfortable (%) | 34 | 35 | 31 | 26 | 17 | 7 | 4 | 4 | 5 | 12 | 18 | 27 |
| Humid (%) | 12 | 17 | 14 | 9 | 3 | 1 | 0 | 0 | 0 | 1 | 3 | 5 |
| Muggy (%) | 2 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| Jan | 52 | 34 | 12 | 2 |
| Feb | 46 | 35 | 17 | 2 |
| Mar | 52 | 31 | 14 | 2 |
| Apr | 64 | 26 | 9 | 1 |
| May | 80 | 17 | 3 | 0 |
| Jun | 92 | 7 | 1 | 0 |
| Jul | 96 | 4 | 0 | 0 |
| Aug | 96 | 4 | 0 | 0 |
| Sep | 95 | 5 | 0 | 0 |
| Oct | 87 | 12 | 1 | 0 |
| Nov | 79 | 18 | 3 | 0 |
| Dec | 68 | 27 | 5 | 0 |
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.
Across the year, average wind speed in Bunbury is typically light breeze, near 16 km/h, and varies little with the seasons.
The windier part of the year lasts 4.6 months, from around Oct 30 to Mar 19. The windiest month is January, averaging about 17 km/h (light breeze).
The calmer part of the year runs from around Mar 20 to Jun 21, with April the calmest month at about 14 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 17 | 17 | 16 | 14 | 14 | 15 | 16 | 15 | 16 | 15 | 16 | 17 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 17 | light breeze |
| Feb | 17 | light breeze |
| Mar | 16 | light breeze |
| Apr | 14 | light breeze |
| May | 14 | light breeze |
| Jun | 15 | light breeze |
| Jul | 16 | light breeze |
| Aug | 15 | light breeze |
| Sep | 16 | light breeze |
| Oct | 15 | light breeze |
| Nov | 16 | light breeze |
| Dec | 17 | light breeze |
Hazard calendar for Bunbury
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Bunbury sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Bunbury's rainy season runs May–September, when most of the year's rain falls.
Best time to visit Bunbury
To characterize how pleasant the weather is in Bunbury throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late April, Bunbury is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
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 Bunbury for general outdoor tourist activities is from mid October to early May, with a peak score in the second week of December.
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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 8.2 | 8.1 | 8.2 | 7.7 | 6.5 | 5.3 | 4.7 | 4.9 | 5.6 | 7.0 | 7.9 | 8.5 |
| Rating | ideal | ideal | ideal | ideal | good | fair | fair | fair | good | good | ideal | ideal |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 8.2 | ideal |
| Feb | 8.1 | ideal |
| Mar | 8.2 | ideal |
| Apr | 7.7 | ideal |
| May | 6.5 | good |
| Jun | 5.3 | fair |
| Jul | 4.7 | fair |
| Aug | 4.9 | fair |
| Sep | 5.6 | good |
| Oct | 7.0 | good |
| Nov | 7.9 | ideal |
| Dec | 8.5 | ideal |
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 Bunbury for hot-weather activities is from early December to early April, with a peak score in the first week of February.
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 Bunbury, by month
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 February (highs near 28°C), the essentials are light clothes and sun protection. In the cold season around July (highs near 16°C), pack a warm layer and rain gear.
In February, Bunbury sees daytime highs around 28°C and nights near 17°C. Pack light clothes and sun protection.
Sea temperature near Bunbury
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
The sea offshore is warmest in February at about 22°C and coldest in September near 17°C.
It's comfortable for a long swim from Dec 8 to May 9 — about 5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 21 | 22 | 22 | 21 | 20 | 19 | 18 | 17 | 17 | 17 | 19 | 20 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 22 | Refreshing |
| Mar | 22 | Refreshing |
| Apr | 21 | Refreshing |
| May | 20 | Cool |
| Jun | 19 | Cool |
| Jul | 18 | Cool |
| Aug | 17 | Cool |
| Sep | 17 | Cool |
| Oct | 17 | Cool |
| Nov | 19 | Cool |
| Dec | 20 | Refreshing |
UV index (midday) in Bunbury by month
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 Bunbury peaks around January 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 11 | 10 | 6 | 4 | 3 | 3 | 4 | 8 | 8 | 10 | 13 |
| Level | Extreme | Extreme | Extreme | High | Moderate | Moderate | Moderate | Moderate | Very high | Very high | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 11 | Extreme |
| Mar | 10 | Extreme |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 8 | Very high |
| Oct | 8 | Very high |
| Nov | 10 | Very high |
| Dec | 13 | Extreme |
Average hourly UV index in Bunbury
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 January the burn window is concentrated in the middle of the day: about 9 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 9 | 8.5 | 7.5 | 5.5 | 3 | 0 | 1 | 4 | 6.5 | 7.5 | 8 | 9 |
| UV ≥ 6 (h/day) | 7 | 6 | 5 | 0.5 | 0 | 0 | 0 | 0 | 3.5 | 4.5 | 5.5 | 7 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 9 | 7 |
| Feb | 8.5 | 6 |
| Mar | 7.5 | 5 |
| Apr | 5.5 | 0.5 |
| May | 3 | 0 |
| Jun | 0 | 0 |
| Jul | 1 | 0 |
| Aug | 4 | 0 |
| Sep | 6.5 | 3.5 |
| Oct | 7.5 | 4.5 |
| Nov | 8 | 5.5 |
| Dec | 9 | 7 |
Growing season
Bunbury is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
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. Bunbury banks about 2,589 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 376 | 350 | 341 | 249 | 172 | 111 | 85 | 87 | 102 | 164 | 234 | 320 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 376 |
| Feb | 350 |
| Mar | 341 |
| Apr | 249 |
| May | 172 |
| Jun | 111 |
| Jul | 85 |
| Aug | 87 |
| Sep | 102 |
| Oct | 164 |
| Nov | 234 |
| Dec | 320 |
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.
Bunbury receives about 5.2 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.3 and 8.5 kWh/m².
The brighter stretch of the year lasts 5.8 months, from around Oct 2 to Mar 26. The brightest month is December, averaging about 8.2 kWh/m² (intense).
The dimmest month is June, down near 2.4 kWh/m² — roughly 71% less than the December peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 8.3 | 7.3 | 5.8 | 4.1 | 2.9 | 2.3 | 2.4 | 3.2 | 4.4 | 6.0 | 7.4 | 8.2 |
| Level | Intense | Intense | Bright | Bright | Moderate | Moderate | Moderate | Moderate | Bright | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 8.3 | Intense |
| Feb | 7.3 | Intense |
| Mar | 5.8 | Bright |
| Apr | 4.1 | Bright |
| May | 2.9 | Moderate |
| Jun | 2.3 | Moderate |
| Jul | 2.4 | Moderate |
| Aug | 3.2 | Moderate |
| Sep | 4.4 | Bright |
| Oct | 6.0 | Intense |
| Nov | 7.4 | Intense |
| Dec | 8.2 | Intense |
Where is Bunbury?
Bunbury sits at 33.3°S, 115.6°E, 5 m above sea level, in Australia. The nearest listed city is Australind, 9.0 km away.
Topography around Bunbury
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Bunbury.
Within 3 km, the terrain around Bunbury has only modest variations in elevation — a maximum elevation change of 45 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, significant variations in elevation — a maximum elevation change of 482 m.
The land around Bunbury is covered by water (48%) and artificial surfaces (34%) within 3 km, water (53%) and grassland (21%) within 16 km, and trees (48%) and water (30%) 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 Bunbury (-33.3271°, 115.6414°, elevation 5 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).