Dee Why weather in March
In March, Dee Why sees average daytime highs of 23°C and overnight lows near 19°C, with 82 mm of rain across 11.6 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.
Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 42% of the time in March, and the air most often feels humid.
Daylight stretches from about 12 h 48 min at the start of March to 11 h 42 min by month's end. Set against the rest of the year, March is Dee Why's 8th-clearest and 10th-windiest month. For the whole year in context, see Dee Why's year-round climate.
- Daytime high
- 23°
- 3rd warmest
- Overnight low
- 19°
- 10th coldest
- Rainfall
- 82 mm
- 11.6 wet days
- Daylight
- 12 h 18 min
- 6:57 AM – 7:12 PM
- Cloud cover
- 50%
- 8th clearest
- Wind
- 17 km/h
- 10th windiest
- Solar energy
- 4.74 kWh/m²
- Travel score
- 6.8
- out of 10
Dee Why is suburb of Sydney, New South Wales, Australia.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in March
Day-to-day highs hold fairly steady near 23°C through the month.
A typical March day in Dee Why reaches about 23°C in the afternoon and slips back to 19°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 26°C. Set against its neighbours, March runs about 1°C cooler than February and about 2°C warmer than April.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 |
| Avg low (°C) | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 24 | 20 |
| 2 | 24 | 20 |
| 3 | 24 | 20 |
| 4 | 24 | 20 |
| 5 | 24 | 20 |
| 6 | 23 | 20 |
| 7 | 23 | 20 |
| 8 | 23 | 20 |
| 9 | 23 | 20 |
| 10 | 23 | 20 |
| 11 | 23 | 20 |
| 12 | 23 | 20 |
| 13 | 23 | 19 |
| 14 | 23 | 19 |
| 15 | 23 | 19 |
| 16 | 23 | 19 |
| 17 | 23 | 19 |
| 18 | 23 | 19 |
| 19 | 23 | 19 |
| 20 | 23 | 19 |
| 21 | 23 | 19 |
| 22 | 23 | 19 |
| 23 | 23 | 19 |
| 24 | 23 | 19 |
| 25 | 23 | 19 |
| 26 | 23 | 19 |
| 27 | 23 | 18 |
| 28 | 23 | 18 |
| 29 | 23 | 18 |
| 30 | 22 | 18 |
| 31 | 22 | 18 |
Dee Why weather by month
How March compares with the rest of the year at a glance. March is the 3rd-warmest and 3rd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 24° / 20° | 72 | 9.3 | 14 | 7.2 |
| Feb | 24° / 20° | 93 | 10.3 | 13.3 | 6.9 |
| Mar | 23° / 19° | 82 | 11.6 | 12.3 | 6.8 |
| Apr | 21° / 17° | 77 | 10.5 | 11.2 | 6.7 |
| May | 19° / 14° | 79 | 9.7 | 10.3 | 6.4 |
| Jun | 17° / 12° | 97 | 10.3 | 9.8 | 5.6 |
| Jul | 16° / 11° | 56 | 7.7 | 10 | 5.8 |
| Aug | 17° / 11° | 53 | 6.6 | 10.7 | 6.4 |
| Sep | 19° / 13° | 50 | 6.7 | 11.8 | 6.9 |
| Oct | 20° / 15° | 59 | 8 | 12.8 | 6.8 |
| Nov | 21° / 17° | 72 | 9.1 | 13.8 | 6.8 |
| Dec | 23° / 19° | 60 | 8.6 | 14.2 | 7.2 |
Cloud cover in March
The sky is clear or mostly clear about 42% of the time in March.
Beyond those clear spells, partly cloudy skies cover about 21% of March, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to open up as the month goes on.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 57 | 57 | 58 | 58 | 58 | 59 | 60 | 61 | 62 | 62 | 63 | 63 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 64 | 64 | 64 | 64 | 64 | 64 | 65 | 66 | 66 | 67 | 67 |
| Cloudier (%) | 43 | 43 | 42 | 42 | 42 | 41 | 40 | 39 | 38 | 38 | 37 | 37 | 36 | 36 | 36 | 36 | 36 | 36 | 37 | 37 | 36 | 36 | 36 | 36 | 36 | 36 | 35 | 34 | 34 | 33 | 33 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 57 | 43 |
| 2 | 57 | 43 |
| 3 | 58 | 42 |
| 4 | 58 | 42 |
| 5 | 58 | 42 |
| 6 | 59 | 41 |
| 7 | 60 | 40 |
| 8 | 61 | 39 |
| 9 | 62 | 38 |
| 10 | 62 | 38 |
| 11 | 63 | 37 |
| 12 | 63 | 37 |
| 13 | 64 | 36 |
| 14 | 64 | 36 |
| 15 | 64 | 36 |
| 16 | 64 | 36 |
| 17 | 64 | 36 |
| 18 | 64 | 36 |
| 19 | 63 | 37 |
| 20 | 63 | 37 |
| 21 | 64 | 36 |
| 22 | 64 | 36 |
| 23 | 64 | 36 |
| 24 | 64 | 36 |
| 25 | 64 | 36 |
| 26 | 64 | 36 |
| 27 | 65 | 35 |
| 28 | 66 | 34 |
| 29 | 66 | 34 |
| 30 | 67 | 33 |
| 31 | 67 | 33 |
Chance of precipitation in March
Dee Why gets around 82 mm of rain over 11.6 wet days in March. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 37% and peaks near 39% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 38 | 38 | 39 | 39 | 39 | 38 | 38 | 38 | 38 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 |
| Rain chance (%) | |
|---|---|
| 1 | 38 |
| 2 | 38 |
| 3 | 39 |
| 4 | 39 |
| 5 | 39 |
| 6 | 38 |
| 7 | 38 |
| 8 | 38 |
| 9 | 38 |
| 10 | 37 |
| 11 | 37 |
| 12 | 37 |
| 13 | 36 |
| 14 | 36 |
| 15 | 36 |
| 16 | 36 |
| 17 | 36 |
| 18 | 36 |
| 19 | 36 |
| 20 | 36 |
| 21 | 36 |
| 22 | 36 |
| 23 | 36 |
| 24 | 37 |
| 25 | 37 |
| 26 | 37 |
| 27 | 37 |
| 28 | 37 |
| 29 | 37 |
| 30 | 37 |
| 31 | 37 |
Humidity in March
Most of March feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, March lands in the humid band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 28% of them.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 11 | 12 | 12 | 13 | 14 | 15 | 16 | 16 | 17 | 18 | 19 | 20 |
| Comfortable (%) | 17 | 18 | 18 | 19 | 19 | 20 | 20 | 21 | 21 | 22 | 22 | 22 | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 25 | 26 | 26 | 27 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 |
| Humid (%) | 37 | 38 | 38 | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 39 | 39 | 39 | 38 | 38 | 37 | 37 | 36 | 36 | 36 | 36 | 36 | 35 | 35 | 35 | 35 | 34 | 34 | 33 | 33 | 33 |
| Muggy (%) | 37 | 36 | 35 | 34 | 33 | 33 | 32 | 31 | 31 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 25 | 24 | 23 | 22 | 20 | 19 | 18 | 17 | 16 | 14 | 13 |
| Oppressive (%) | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 6 | 17 | 37 | 37 | 3 |
| 2 | 6 | 18 | 38 | 36 | 2 |
| 3 | 6 | 18 | 38 | 35 | 2 |
| 4 | 6 | 19 | 39 | 34 | 2 |
| 5 | 6 | 19 | 39 | 33 | 2 |
| 6 | 7 | 20 | 39 | 33 | 2 |
| 7 | 7 | 20 | 39 | 32 | 2 |
| 8 | 7 | 21 | 40 | 31 | 2 |
| 9 | 7 | 21 | 40 | 31 | 2 |
| 10 | 7 | 22 | 40 | 30 | 2 |
| 11 | 7 | 22 | 39 | 30 | 2 |
| 12 | 7 | 22 | 39 | 29 | 2 |
| 13 | 8 | 23 | 39 | 29 | 2 |
| 14 | 8 | 23 | 38 | 28 | 2 |
| 15 | 8 | 24 | 38 | 28 | 2 |
| 16 | 9 | 24 | 37 | 28 | 2 |
| 17 | 9 | 24 | 37 | 27 | 2 |
| 18 | 10 | 25 | 36 | 27 | 2 |
| 19 | 10 | 25 | 36 | 26 | 2 |
| 20 | 11 | 25 | 36 | 26 | 2 |
| 21 | 12 | 26 | 36 | 25 | 2 |
| 22 | 12 | 26 | 36 | 24 | 2 |
| 23 | 13 | 27 | 35 | 23 | 2 |
| 24 | 14 | 27 | 35 | 22 | 2 |
| 25 | 15 | 28 | 35 | 20 | 2 |
| 26 | 16 | 29 | 35 | 19 | 1 |
| 27 | 16 | 30 | 34 | 18 | 1 |
| 28 | 17 | 31 | 34 | 17 | 1 |
| 29 | 18 | 32 | 33 | 16 | 1 |
| 30 | 19 | 33 | 33 | 14 | 1 |
| 31 | 20 | 34 | 33 | 13 | 0 |
Wind in March
Winds average 17 km/h in March.
Across March, daily wind ranges from about 16 km/h on the calmest days to 18 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 18 | light breeze |
| 2 | 18 | light breeze |
| 3 | 18 | light breeze |
| 4 | 18 | light breeze |
| 5 | 18 | light breeze |
| 6 | 18 | light breeze |
| 7 | 17 | light breeze |
| 8 | 17 | light breeze |
| 9 | 17 | light breeze |
| 10 | 17 | light breeze |
| 11 | 17 | light breeze |
| 12 | 17 | light breeze |
| 13 | 17 | light breeze |
| 14 | 17 | light breeze |
| 15 | 17 | light breeze |
| 16 | 17 | light breeze |
| 17 | 17 | light breeze |
| 18 | 17 | light breeze |
| 19 | 17 | light breeze |
| 20 | 17 | light breeze |
| 21 | 17 | light breeze |
| 22 | 17 | light breeze |
| 23 | 17 | light breeze |
| 24 | 16 | light breeze |
| 25 | 16 | light breeze |
| 26 | 16 | light breeze |
| 27 | 16 | light breeze |
| 28 | 16 | light breeze |
| 29 | 16 | light breeze |
| 30 | 16 | light breeze |
| 31 | 16 | light breeze |
Sunrise & sunset in March
Daylight runs from about 12 h 48 min at the start of March to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 66 minutes over March. Sunrise moves from 6:44 AM to 7:08 AM, and sunset from 7:32 PM to 6:51 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.8 | 12.8 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.4 | 12.4 | 12.4 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.0 | 12.0 | 12.0 | 11.9 | 11.9 | 11.9 | 11.8 | 11.8 | 11.8 | 11.7 |
| Sunrise (AM) | 6:44 | 6:45 | 6:46 | 6:47 | 6:48 | 6:49 | 6:49 | 6:50 | 6:51 | 6:52 | 6:53 | 6:54 | 6:54 | 6:55 | 6:56 | 6:57 | 6:57 | 6:58 | 6:59 | 7:00 | 7:01 | 7:01 | 7:02 | 7:03 | 7:04 | 7:04 | 7:05 | 7:06 | 7:07 | 7:07 | 7:08 |
| Sunset (PM) | 7:32 | 7:31 | 7:29 | 7:28 | 7:27 | 7:26 | 7:24 | 7:23 | 7:22 | 7:20 | 7:19 | 7:18 | 7:16 | 7:15 | 7:14 | 7:12 | 7:11 | 7:10 | 7:08 | 7:07 | 7:05 | 7:04 | 7:03 | 7:01 | 7:00 | 6:58 | 6:57 | 6:56 | 6:54 | 6:53 | 6:51 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.8 | 6:44 | 7:32 |
| 2 | 12.8 | 6:45 | 7:31 |
| 3 | 12.7 | 6:46 | 7:29 |
| 4 | 12.7 | 6:47 | 7:28 |
| 5 | 12.6 | 6:48 | 7:27 |
| 6 | 12.6 | 6:49 | 7:26 |
| 7 | 12.6 | 6:49 | 7:24 |
| 8 | 12.5 | 6:50 | 7:23 |
| 9 | 12.5 | 6:51 | 7:22 |
| 10 | 12.5 | 6:52 | 7:20 |
| 11 | 12.4 | 6:53 | 7:19 |
| 12 | 12.4 | 6:54 | 7:18 |
| 13 | 12.4 | 6:54 | 7:16 |
| 14 | 12.3 | 6:55 | 7:15 |
| 15 | 12.3 | 6:56 | 7:14 |
| 16 | 12.3 | 6:57 | 7:12 |
| 17 | 12.2 | 6:57 | 7:11 |
| 18 | 12.2 | 6:58 | 7:10 |
| 19 | 12.2 | 6:59 | 7:08 |
| 20 | 12.1 | 7:00 | 7:07 |
| 21 | 12.1 | 7:01 | 7:05 |
| 22 | 12.0 | 7:01 | 7:04 |
| 23 | 12.0 | 7:02 | 7:03 |
| 24 | 12.0 | 7:03 | 7:01 |
| 25 | 11.9 | 7:04 | 7:00 |
| 26 | 11.9 | 7:04 | 6:58 |
| 27 | 11.9 | 7:05 | 6:57 |
| 28 | 11.8 | 7:06 | 6:56 |
| 29 | 11.8 | 7:07 | 6:54 |
| 30 | 11.8 | 7:07 | 6:53 |
| 31 | 11.7 | 7:08 | 6:51 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 4.74 kWh/m².
For context, solar energy here swings from a low near 2.45 kWh/m² to a high of 6.64 kWh/m² in January across the year — March's 4.74 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.2 | 5.2 | 5.1 | 5.1 | 5.1 | 5.0 | 5.0 | 5.0 | 5.0 | 4.9 | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.6 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.4 | 4.3 |
| 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 | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.2 | Bright |
| 2 | 5.2 | Bright |
| 3 | 5.1 | Bright |
| 4 | 5.1 | Bright |
| 5 | 5.1 | Bright |
| 6 | 5.0 | Bright |
| 7 | 5.0 | Bright |
| 8 | 5.0 | Bright |
| 9 | 5.0 | Bright |
| 10 | 4.9 | Bright |
| 11 | 4.9 | Bright |
| 12 | 4.9 | Bright |
| 13 | 4.9 | Bright |
| 14 | 4.8 | Bright |
| 15 | 4.8 | Bright |
| 16 | 4.8 | Bright |
| 17 | 4.8 | Bright |
| 18 | 4.7 | Bright |
| 19 | 4.7 | Bright |
| 20 | 4.7 | Bright |
| 21 | 4.6 | Bright |
| 22 | 4.6 | Bright |
| 23 | 4.6 | Bright |
| 24 | 4.5 | Bright |
| 25 | 4.5 | Bright |
| 26 | 4.5 | Bright |
| 27 | 4.4 | Bright |
| 28 | 4.4 | Bright |
| 29 | 4.4 | Bright |
| 30 | 4.4 | Bright |
| 31 | 4.3 | Bright |
Hazard calendar for Dee Why
In March, Dee Why sits inside its cyclone season. The full year is below, with each hazard's peak months called out.
Dee Why sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Is March a good time to visit Dee Why?
Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
March is a reasonable time to visit Dee Why for sightseeing.
What to pack for Dee Why in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Dee Why sees daytime highs around 23°C and nights near 19°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.
Sea temperature near Dee Why in March
The nearest coast averages about 23°C in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 16 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 13 to Jun 7 — about 6.8 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 | 20 | 19 | 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 | 20 | Cool |
| Jul | 19 | Cool |
| Aug | 18 | Cool |
| Sep | 18 | Cool |
| Oct | 19 | Cool |
| Nov | 20 | Refreshing |
| Dec | 21 | Refreshing |
UV index in Dee Why in March
Clear-sky midday UV in March peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Dee Why peaks around January 16 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 12 | 11 | 9 | 6 | 4 | 2 | 3 | 4 | 6 | 8 | 10 | 12 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | High | Very high | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 12 | Extreme |
| Feb | 11 | 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 | 12 | Extreme |
Where is Dee Why?
Dee Why sits at 33.8°S, 151.3°E, 18 m above sea level, in Australia. The nearest listed city is Manly, 5.0 km away.
Topography around Dee Why
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Dee Why.
Within 3 km, the terrain around Dee Why has only modest variations in elevation — a maximum elevation change of 170 m around an average of 31 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 223 m; within 80 km, large variations in elevation — a maximum elevation change of 811 m.
The land around Dee Why is covered by artificial surfaces (34%), trees (30%) and water (28%) within 3 km, water (52%) and trees (36%) within 16 km, and trees (50%) and water (36%) 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 Dee Why (-33.7511°, 151.2889°, elevation 18 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).