St Clair weather in September
In September, St Clair sees average daytime highs of 22°C and overnight lows near 9°C, with 40 mm of rain across 5.7 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 10th-wettest month of the year here.
Highs climb over the month, from about 20°C in the first days to 23°C by the end. The sky is clear or mostly clear about 54% of the time in September, and the air most often feels dry.
Daylight stretches from about 11 h 18 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is St Clair's 3rd-clearest and 2nd-windiest month. For the whole year in context, see St Clair's year-round climate.
- Daytime high
- 22°
- 8th warmest
- Overnight low
- 9°
- 4th coldest
- Rainfall
- 40 mm
- 5.7 wet days
- Daylight
- 11 h 48 min
- 6:57 AM – 6:45 PM
- Cloud cover
- 40%
- 3rd clearest
- Wind
- 9 km/h
- 2nd windiest
- Solar energy
- 4.97 kWh/m²
- Travel score
- 7.6
- out of 10
St Clair is outer western suburb of Sydney, New South Wales, Australia.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs climb over the month, from about 20°C in the first days to 23°C by the end.
A typical September day in St Clair reaches about 22°C in the afternoon and slips back to 9°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 27°C. Set against its neighbours, September runs about 3°C warmer than August and about 2°C cooler than October.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg low (°C) | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 20 | 7 |
| 2 | 20 | 7 |
| 3 | 20 | 7 |
| 4 | 20 | 8 |
| 5 | 20 | 8 |
| 6 | 21 | 8 |
| 7 | 21 | 8 |
| 8 | 21 | 8 |
| 9 | 21 | 8 |
| 10 | 21 | 8 |
| 11 | 21 | 8 |
| 12 | 21 | 8 |
| 13 | 21 | 8 |
| 14 | 22 | 8 |
| 15 | 22 | 8 |
| 16 | 22 | 9 |
| 17 | 22 | 9 |
| 18 | 22 | 9 |
| 19 | 22 | 9 |
| 20 | 22 | 9 |
| 21 | 22 | 9 |
| 22 | 23 | 9 |
| 23 | 23 | 9 |
| 24 | 23 | 9 |
| 25 | 23 | 9 |
| 26 | 23 | 9 |
| 27 | 23 | 10 |
| 28 | 23 | 10 |
| 29 | 23 | 10 |
| 30 | 23 | 10 |
St Clair weather by month
How September compares with the rest of the year at a glance. September is the 8th-warmest and 10th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 18° | 77 | 11 | 14 | 5.5 |
| Feb | 28° / 18° | 100 | 11.4 | 13.3 | 5.9 |
| Mar | 26° / 16° | 76 | 10.9 | 12.3 | 6.7 |
| Apr | 23° / 12° | 47 | 6.8 | 11.2 | 7.5 |
| May | 20° / 9° | 41 | 5.4 | 10.3 | 7.2 |
| Jun | 17° / 7° | 55 | 6.7 | 9.8 | 6.3 |
| Jul | 17° / 5° | 31 | 4.7 | 10 | 6.5 |
| Aug | 19° / 6° | 33 | 4.6 | 10.7 | 7.3 |
| Sep | 22° / 9° | 40 | 5.7 | 11.8 | 7.6 |
| Oct | 24° / 11° | 53 | 7.6 | 12.9 | 7.5 |
| Nov | 26° / 14° | 78 | 10 | 13.8 | 6.7 |
| Dec | 27° / 16° | 75 | 10.2 | 14.2 | 6.3 |
Cloud cover in September
The sky is clear or mostly clear about 54% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 29%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 71 | 71 | 71 | 71 | 71 | 72 | 72 | 72 | 72 | 72 | 72 | 73 | 73 | 73 | 73 | 73 | 73 | 72 | 72 | 72 | 71 | 71 | 71 | 71 | 70 | 70 | 69 | 68 | 67 | 67 |
| Cloudier (%) | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 30 | 30 | 31 | 32 | 33 | 33 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 71 | 29 |
| 2 | 71 | 29 |
| 3 | 71 | 29 |
| 4 | 71 | 29 |
| 5 | 71 | 29 |
| 6 | 72 | 28 |
| 7 | 72 | 28 |
| 8 | 72 | 28 |
| 9 | 72 | 28 |
| 10 | 72 | 28 |
| 11 | 72 | 28 |
| 12 | 73 | 27 |
| 13 | 73 | 27 |
| 14 | 73 | 27 |
| 15 | 73 | 27 |
| 16 | 73 | 27 |
| 17 | 73 | 27 |
| 18 | 72 | 28 |
| 19 | 72 | 28 |
| 20 | 72 | 28 |
| 21 | 71 | 29 |
| 22 | 71 | 29 |
| 23 | 71 | 29 |
| 24 | 71 | 29 |
| 25 | 70 | 30 |
| 26 | 70 | 30 |
| 27 | 69 | 31 |
| 28 | 68 | 32 |
| 29 | 67 | 33 |
| 30 | 67 | 33 |
Chance of precipitation in September
St Clair gets around 40 mm of rain over 5.7 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 19% and peaks near 22% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 20 | 20 | 19 | 19 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 19 | 19 | 19 | 20 |
| Rain chance (%) | |
|---|---|
| 1 | 22 |
| 2 | 22 |
| 3 | 22 |
| 4 | 22 |
| 5 | 21 |
| 6 | 21 |
| 7 | 21 |
| 8 | 20 |
| 9 | 20 |
| 10 | 19 |
| 11 | 19 |
| 12 | 18 |
| 13 | 18 |
| 14 | 18 |
| 15 | 17 |
| 16 | 17 |
| 17 | 17 |
| 18 | 16 |
| 19 | 16 |
| 20 | 17 |
| 21 | 17 |
| 22 | 17 |
| 23 | 17 |
| 24 | 18 |
| 25 | 18 |
| 26 | 18 |
| 27 | 19 |
| 28 | 19 |
| 29 | 19 |
| 30 | 20 |
Humidity in September
Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the dry band about 94% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 97 | 97 | 97 | 97 | 97 | 97 | 96 | 96 | 96 | 96 | 96 | 96 | 96 | 95 | 95 | 95 | 94 | 94 | 94 | 93 | 93 | 93 | 92 | 92 | 91 | 90 | 89 | 88 | 88 | 88 |
| Comfortable (%) | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 9 | 10 | 10 | 11 | 11 | 11 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 97 | 3 | 0 |
| 2 | 97 | 3 | 0 |
| 3 | 97 | 3 | 0 |
| 4 | 97 | 3 | 0 |
| 5 | 97 | 3 | 0 |
| 6 | 97 | 3 | 0 |
| 7 | 96 | 4 | 0 |
| 8 | 96 | 4 | 0 |
| 9 | 96 | 4 | 0 |
| 10 | 96 | 4 | 0 |
| 11 | 96 | 4 | 0 |
| 12 | 96 | 4 | 0 |
| 13 | 96 | 4 | 0 |
| 14 | 95 | 5 | 0 |
| 15 | 95 | 5 | 0 |
| 16 | 95 | 5 | 0 |
| 17 | 94 | 6 | 0 |
| 18 | 94 | 6 | 0 |
| 19 | 94 | 6 | 0 |
| 20 | 93 | 7 | 0 |
| 21 | 93 | 7 | 0 |
| 22 | 93 | 7 | 0 |
| 23 | 92 | 8 | 0 |
| 24 | 92 | 8 | 0 |
| 25 | 91 | 9 | 0 |
| 26 | 90 | 10 | 0 |
| 27 | 89 | 10 | 1 |
| 28 | 88 | 11 | 1 |
| 29 | 88 | 11 | 1 |
| 30 | 88 | 11 | 1 |
Wind in September
Winds average 9 km/h in September.
Across September, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 9 | calm |
| 2 | 9 | calm |
| 3 | 9 | calm |
| 4 | 9 | calm |
| 5 | 9 | calm |
| 6 | 9 | calm |
| 7 | 9 | calm |
| 8 | 9 | calm |
| 9 | 9 | calm |
| 10 | 9 | calm |
| 11 | 9 | calm |
| 12 | 9 | calm |
| 13 | 9 | calm |
| 14 | 9 | calm |
| 15 | 9 | calm |
| 16 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 9 | calm |
Sunrise & sunset in September
Daylight runs from about 11 h 18 min at the start of September to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 60 minutes over September. Sunrise moves from 7:19 AM to 6:37 AM, and sunset from 6:34 PM to 6:55 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.3 | 11.3 | 11.3 | 11.4 | 11.4 | 11.4 | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.2 | 12.2 | 12.2 | 12.3 | 12.3 |
| Sunrise (AM) | 7:19 | 7:17 | 7:16 | 7:15 | 7:13 | 7:12 | 7:10 | 7:09 | 7:07 | 7:06 | 7:05 | 7:03 | 7:02 | 7:00 | 6:59 | 6:57 | 6:56 | 6:54 | 6:53 | 6:52 | 6:50 | 6:49 | 6:47 | 6:46 | 6:44 | 6:43 | 6:42 | 6:40 | 6:39 | 6:37 |
| Sunset (PM) | 6:34 | 6:35 | 6:36 | 6:37 | 6:37 | 6:38 | 6:39 | 6:39 | 6:40 | 6:41 | 6:41 | 6:42 | 6:43 | 6:44 | 6:44 | 6:45 | 6:46 | 6:46 | 6:47 | 6:48 | 6:49 | 6:49 | 6:50 | 6:51 | 6:51 | 6:52 | 6:53 | 6:54 | 6:54 | 6:55 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.3 | 7:19 | 6:34 |
| 2 | 11.3 | 7:17 | 6:35 |
| 3 | 11.3 | 7:16 | 6:36 |
| 4 | 11.4 | 7:15 | 6:37 |
| 5 | 11.4 | 7:13 | 6:37 |
| 6 | 11.4 | 7:12 | 6:38 |
| 7 | 11.5 | 7:10 | 6:39 |
| 8 | 11.5 | 7:09 | 6:39 |
| 9 | 11.5 | 7:07 | 6:40 |
| 10 | 11.6 | 7:06 | 6:41 |
| 11 | 11.6 | 7:05 | 6:41 |
| 12 | 11.6 | 7:03 | 6:42 |
| 13 | 11.7 | 7:02 | 6:43 |
| 14 | 11.7 | 7:00 | 6:44 |
| 15 | 11.8 | 6:59 | 6:44 |
| 16 | 11.8 | 6:57 | 6:45 |
| 17 | 11.8 | 6:56 | 6:46 |
| 18 | 11.9 | 6:54 | 6:46 |
| 19 | 11.9 | 6:53 | 6:47 |
| 20 | 11.9 | 6:52 | 6:48 |
| 21 | 12.0 | 6:50 | 6:49 |
| 22 | 12.0 | 6:49 | 6:49 |
| 23 | 12.0 | 6:47 | 6:50 |
| 24 | 12.1 | 6:46 | 6:51 |
| 25 | 12.1 | 6:44 | 6:51 |
| 26 | 12.2 | 6:43 | 6:52 |
| 27 | 12.2 | 6:42 | 6:53 |
| 28 | 12.2 | 6:40 | 6:54 |
| 29 | 12.3 | 6:39 | 6:54 |
| 30 | 12.3 | 6:37 | 6:55 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.97 kWh/m².
For context, solar energy here swings from a low near 2.49 kWh/m² to a high of 6.46 kWh/m² in December across the year — September's 4.97 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.3 | 4.3 | 4.3 | 4.4 | 4.4 | 4.5 | 4.5 | 4.6 | 4.7 | 4.7 | 4.8 | 4.8 | 4.9 | 4.9 | 5.0 | 5.0 | 5.1 | 5.1 | 5.1 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.3 | Bright |
| 2 | 4.3 | Bright |
| 3 | 4.3 | Bright |
| 4 | 4.4 | Bright |
| 5 | 4.4 | Bright |
| 6 | 4.5 | Bright |
| 7 | 4.5 | Bright |
| 8 | 4.6 | Bright |
| 9 | 4.7 | Bright |
| 10 | 4.7 | Bright |
| 11 | 4.8 | Bright |
| 12 | 4.8 | Bright |
| 13 | 4.9 | Bright |
| 14 | 4.9 | Bright |
| 15 | 5.0 | Bright |
| 16 | 5.0 | Bright |
| 17 | 5.1 | Bright |
| 18 | 5.1 | Bright |
| 19 | 5.1 | Bright |
| 20 | 5.2 | Bright |
| 21 | 5.2 | Bright |
| 22 | 5.3 | Bright |
| 23 | 5.3 | Bright |
| 24 | 5.3 | Bright |
| 25 | 5.3 | Bright |
| 26 | 5.4 | Bright |
| 27 | 5.4 | Bright |
| 28 | 5.4 | Bright |
| 29 | 5.4 | Bright |
| 30 | 5.5 | Bright |
Hazard calendar for St Clair
None of St Clair's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
St Clair sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Is September a good time to visit St Clair?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is one of the better times to visit St Clair for general sightseeing.
What to pack for St Clair in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, St Clair sees daytime highs around 22°C and nights near 9°C. Worth packing: sun protection. About 6 days see rain.
Sea temperature near St Clair in September
The nearest coast averages about 18°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 48 km away) is warmest in February at about 23°C and coldest in August near 18°C.
It's comfortable for a long swim from Nov 16 to Jun 2 — about 6.5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 23 | 23 | 23 | 22 | 21 | 19 | 18 | 18 | 18 | 19 | 20 | 21 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool | Cool | Cool | Refreshing | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 23 | Refreshing |
| Feb | 23 | Refreshing |
| Mar | 23 | Refreshing |
| Apr | 22 | Refreshing |
| May | 21 | Refreshing |
| Jun | 19 | Cool |
| Jul | 18 | Cool |
| Aug | 18 | Cool |
| Sep | 18 | Cool |
| Oct | 19 | Cool |
| Nov | 20 | Refreshing |
| Dec | 21 | Refreshing |
UV index in St Clair in September
Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in St Clair peaks around January 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (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) | 12 | 12 | 9 | 6 | 4 | 2 | 3 | 4 | 6 | 8 | 10 | 11 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | High | Very high | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 12 | Extreme |
| Feb | 12 | Extreme |
| Mar | 9 | Very high |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 2 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 8 | Very high |
| Nov | 10 | Very high |
| Dec | 11 | Extreme |
Air quality in St Clair in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in St Clair is worst in December — around 49 µg/m³ PM2.5 (poor), about 8.1× the cleanest month (June, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 7 | 7 | 8 | 8 | 6 | 6 | 8 | 10 | 10 | 25 | 49 |
| Level | Good | Good | Good | Good | Good | Good | Good | Good | Good | Good | Moderate | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 7 | Good |
| Mar | 7 | Good |
| Apr | 8 | Good |
| May | 8 | Good |
| Jun | 6 | Good |
| Jul | 6 | Good |
| Aug | 8 | Good |
| Sep | 10 | Good |
| Oct | 10 | Good |
| Nov | 25 | Moderate |
| Dec | 49 | Poor |
Where is St Clair?
St Clair sits at 33.8°S, 150.8°E, 49 m above sea level, in Australia. The nearest listed city is Mount Druitt, 5.0 km away.
Topography around St Clair
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of St Clair.
Within 3 km, the terrain around St Clair has only modest variations in elevation — a maximum elevation change of 62 m around an average of 45 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 325 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,382 m.
The land around St Clair is covered by artificial surfaces (48%), grassland (27%) and trees (24%) within 3 km, trees (35%), grassland (32%) and artificial surfaces (28%) within 16 km, and trees (65%) and water (21%) 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 St Clair (-33.7973°, 150.7847°, elevation 49 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).