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Wollongong, New South Wales climate
Cfa Humid subtropical
Wollongong has a mildly seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is January with an average daily high near 25°C, while the coldest is July averaging around 10°C at night. Around 1117 mm of precipitation falls each year, peaking in February (138 mm) and easing off in September (55 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsWollongong climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 25 | 24 | 22 | 20 | 18 | 17 | 18 | 20 | 22 | 22 | 24 |
| Avg temp (°C) | 22 | 22 | 21 | 19 | 16 | 14 | 14 | 14 | 16 | 18 | 19 | 21 |
| Avg low (°C) | 19 | 19 | 18 | 16 | 13 | 11 | 10 | 10 | 12 | 14 | 16 | 18 |
| Precipitation (mm) | 82 | 138 | 131 | 106 | 62 | 123 | 77 | 94 | 55 | 78 | 95 | 76 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 25 | 24 | 22 | 20 | 18 |
| Avg temp (°C) | 22 | 22 | 21 | 19 | 16 | 14 |
| Avg low (°C) | 19 | 19 | 18 | 16 | 13 | 11 |
| Precipitation (mm) | 82 | 138 | 131 | 106 | 62 | 123 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 17 | 18 | 20 | 22 | 22 | 24 |
| Avg temp (°C) | 14 | 14 | 16 | 18 | 19 | 21 |
| Avg low (°C) | 10 | 10 | 12 | 14 | 16 | 18 |
| Precipitation (mm) | 77 | 94 | 55 | 78 | 95 | 76 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 12 | 13 | 11 | 8 | 10 | 9 | 8 | 9 | 11 | 12 | 12 |
| Days with high ≥ 32°C (days) | 0.9 | 0.5 | 0.4 | 0.1 | — | — | — | — | 0.2 | 1 | 1 | 1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 12 | 13 | 11 | 8 | 10 |
| Days with high ≥ 32°C (days) | 0.9 | 0.5 | 0.4 | 0.1 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 8 | 9 | 11 | 12 | 12 |
| Days with high ≥ 32°C (days) | — | — | 0.2 | 1 | 1 | 1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 67 | 63 | 57 | 53 | 56 | 50 | 49 | 52 | 61 | 67 | 65 |
| Clear days (≤ 30% cloud) | 5 | 4 | 5 | 6 | 8 | 7 | 9 | 10 | 8 | 6 | 4 | 5 |
| Partly cloudy days (30–70%) | 11 | 9 | 11 | 13 | 13 | 12 | 14 | 13 | 13 | 12 | 10 | 11 |
| Cloudy days (≥ 70%) | 15 | 15 | 15 | 11 | 10 | 11 | 8 | 8 | 10 | 13 | 16 | 15 |
| Relative humidity (%) | 68 | 74 | 76 | 75 | 77 | 82 | 79 | 74 | 70 | 68 | 68 | 67 |
| Wind speed (km/h) | 1.7 | 1.7 | 1.8 | 1.9 | 2.1 | 2.1 | 2.1 | 2.2 | 2.0 | 1.8 | 1.8 | 1.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 67 | 63 | 57 | 53 | 56 |
| Clear days (≤ 30% cloud) | 5 | 4 | 5 | 6 | 8 | 7 |
| Partly cloudy days (30–70%) | 11 | 9 | 11 | 13 | 13 | 12 |
| Cloudy days (≥ 70%) | 15 | 15 | 15 | 11 | 10 | 11 |
| Relative humidity (%) | 68 | 74 | 76 | 75 | 77 | 82 |
| Wind speed (km/h) | 1.7 | 1.7 | 1.8 | 1.9 | 2.1 | 2.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 49 | 52 | 61 | 67 | 65 |
| Clear days (≤ 30% cloud) | 9 | 10 | 8 | 6 | 4 | 5 |
| Partly cloudy days (30–70%) | 14 | 13 | 13 | 12 | 10 | 11 |
| Cloudy days (≥ 70%) | 8 | 8 | 10 | 13 | 16 | 15 |
| Relative humidity (%) | 79 | 74 | 70 | 68 | 68 | 67 |
| Wind speed (km/h) | 2.1 | 2.2 | 2.0 | 1.8 | 1.8 | 1.7 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 23 years of daily observations at Bellambi Aws, a weather station, about 7 km from the city centre. 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.