Lake Illawarra Weather Forecast

Today 16 Sep
- 13
- 27
Partly cloudy
Wed 17 Sep
- 13
- 23
Sunny
Thu 18 Sep
- 11
- 21
Partly cloudy
Fri 19 Sep
- 10
- 26
Late shower or two
Sat 20 Sep
- 14
- 21
Possible shower then sunny
Sun 21 Sep
- 11
- 20
Mostly sunny
Mon 22 Sep
- 11
- 21
Partly cloudy

Today 16 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Wed 17 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Thu 18 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Fri 19 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Sat 20 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Sun 21 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm
Mon 22 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
8. 10 pm

Today 16 Sep Wollongong

Partly cloudy. Winds northerly 15 to 25 km/h turning northwesterly 25 to 35 km/h in the late morning and afternoon.

Lake Illawarra Temperature Statistics View More

September Temperature

Illawarra Regional Airport (6km)

Lowest 22 June, 2025
-0.3 °C
Average 2025
16.8 °C
Highest 28 January, 2025
40.1 °C
Lowest 13 August, 2025
3.7 °C
Average August
13.2 °C
Highest 25 August, 2025
21.7 °C
Lowest 1 September, 2025
5 °C
Average September
14.9 °C
Highest 8 September, 2025
29.4 °C

Climate (2020–Present)

Illawarra Regional Airport (6km)

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Average Low 2020–2025
12.4 °C
Average 2020–2025
17.1 °C
Average High 2020–2025
22.6 °C

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