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Weather & Climate
Dee Why, New South Wales, Australia
Overview
Climate data and monthly weather averages for Dee Why.
Key Metrics
Annual Avg
18.7°C
Summer Avg
22.4°C
Winter Avg
14.5°C
Record High
39.9°C
Record Low
6°C
Annual Precipitation
887 mm
Avg Humidity
73%
Summer Humidity
75%
Winter Humidity
72%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 37.9° | 22.9° | 15.9° | 83.4 | 75% | 201 | 57.5 |
| Feb | 39.9° | 22.8° | 15.9° | 133 | 77% | 159 | 49.8 |
| Mar | 33° | 21.8° | 13.5° | 104.5 | 75% | 149 | 48 |
| Apr | 29.9° | 19.8° | 11.2° | 73.2 | 73% | 115 | 54.3 |
| May | 25.8° | 17.1° | 9.9° | 53.6 | 71% | 92 | 45.1 |
| Jun | 22.2° | 15.1° | 7.4° | 86.7 | 74% | 71 | 55 |
| Jul | 23° | 14° | 6° | 44.3 | 72% | 86 | 51.3 |
| Aug | 24.3° | 14.5° | 7° | 46.5 | 69% | 114 | 52.9 |
| Sep | 28.7° | 16.6° | 9.3° | 42.9 | 68% | 145 | 49.2 |
| Oct | 32.3° | 18.4° | 10.2° | 64.2 | 70% | 176 | 45.3 |
| Nov | 34.1° | 19.9° | 11.1° | 82.8 | 73% | 186 | 51.4 |
| Dec | 37.6° | 21.4° | 13.7° | 71.9 | 73% | 203 | 46.2 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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