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Broome, Western Australia climate
BSh Hot semi-arid
Broome has a mildly seasonal tropical climate (Hot semi-arid, Köppen BSh). The hottest month is December with an average daily high near 34°C, while the coldest is July averaging around 14°C at night. Precipitation totals about 747 mm a year and is strongly seasonal — January alone averages 229 mm while October barely receives 1 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Broome climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 33 | 34 | 34 | 32 | 30 | 30 | 31 | 32 | 33 | 34 | 34 |
| Avg temp (°C) | 30 | 29 | 30 | 29 | 25 | 22 | 22 | 23 | 25 | 28 | 30 | 30 |
| Avg low (°C) | 27 | 26 | 26 | 23 | 18 | 15 | 14 | 15 | 19 | 23 | 26 | 27 |
| Precipitation (mm) | 229 | 217 | 105 | 28 | 24 | 18 | 9 | 3 | 1 | 1 | 11 | 102 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 33 | 34 | 34 | 32 | 30 |
| Avg temp (°C) | 30 | 29 | 30 | 29 | 25 | 22 |
| Avg low (°C) | 27 | 26 | 26 | 23 | 18 | 15 |
| Precipitation (mm) | 229 | 217 | 105 | 28 | 24 | 18 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 31 | 32 | 33 | 34 | 34 |
| Avg temp (°C) | 22 | 23 | 25 | 28 | 30 | 30 |
| Avg low (°C) | 14 | 15 | 19 | 23 | 26 | 27 |
| Precipitation (mm) | 9 | 3 | 1 | 1 | 11 | 102 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 12 | 13 | 9 | 3 | 2 | 2 | 2 | 3 | 4 | 1 | 1 | 7 |
| Days with high ≥ 32°C (days) | 26 | 19 | 26 | 27 | 17 | 4 | 5 | 10 | 12 | 18 | 23 | 26 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 12 | 13 | 9 | 3 | 2 | 2 |
| Days with high ≥ 32°C (days) | 26 | 19 | 26 | 27 | 17 | 4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 2 | 3 | 4 | 1 | 1 | 7 |
| Days with high ≥ 32°C (days) | 5 | 10 | 12 | 18 | 23 | 26 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 66 | 52 | 35 | 30 | 27 | 22 | 19 | 19 | 26 | 31 | 55 |
| Relative humidity (%) | 72 | 77 | 73 | 59 | 48 | 46 | 42 | 40 | 47 | 51 | 52 | 61 |
| Wind speed (km/h) | 11.6 | 10.4 | 8.2 | 8.6 | 10.6 | 11.5 | 11.2 | 11.0 | 11.0 | 11.6 | 12.6 | 12.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 66 | 52 | 35 | 30 | 27 |
| Relative humidity (%) | 72 | 77 | 73 | 59 | 48 | 46 |
| Wind speed (km/h) | 11.6 | 10.4 | 8.2 | 8.6 | 10.6 | 11.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 22 | 19 | 19 | 26 | 31 | 55 |
| Relative humidity (%) | 42 | 40 | 47 | 51 | 52 | 61 |
| Wind speed (km/h) | 11.2 | 11.0 | 11.0 | 11.6 | 12.6 | 12.6 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Broome Airport, a weather station, inside the city. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.