Water temperature in Dee Why (NSW) in April

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Is it warm enough to swim in Dee Why in April? Average water temperature in Dee Why in April is 22.3°C and therefore suitable for comfortable swimming. The warmest sea in Dee Why in April is 24.8°C, and the coldest is 20°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Dee Why

Changes water temperature in Dee Why in April 2025, 2024

To get an accurate forecast for the water temperature in Dee Why for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Dee Why, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of April.

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 April	24.2°C	22.1°C	21.4°C	24.8°C
2 April	24.6°C	21.9°C	21.1°C	24.6°C
3 April	24.3°C	22°C	21.1°C	24.3°C
4 April	24.5°C	21.7°C	20.6°C	24.5°C
5 April	24.2°C	21.6°C	21°C	24.2°C
6 April	24.2°C	21.6°C	21°C	24.2°C
7 April	24.1°C	21.7°C	21.1°C	24.1°C
8 April	24.3°C	21.3°C	21.2°C	24.3°C
9 April	24°C	21.6°C	21.1°C	24°C
10 April	22.8°C	22.5°C	20.4°C	23.5°C
11 April	23.4°C	22.5°C	20.1°C	23.5°C
12 April	23.3°C	22.3°C	20.4°C	23.8°C
13 April	23°C	22°C	20°C	23.7°C
14 April	23.1°C	22.2°C	20°C	23.6°C
15 April	23.4°C	22.3°C	20.5°C	23.5°C

Day	2025	2024	Min	Max
16 April	23.4°C	22.4°C	20.4°C	23.5°C
17 April	23.4°C	22.5°C	20.8°C	23.4°C
18 April	23°C	22.3°C	20.7°C	23.3°C
19 April	23.5°C	22.4°C	20.5°C	23.5°C
20 April	23.3°C	23°C	20.7°C	23.4°C
21 April	23.5°C	22.5°C	20.1°C	23.5°C
22 April	23.8°C	22.1°C	20.7°C	23.8°C
23 April	23.4°C	21.9°C	20.4°C	23.5°C
24 April	23.4°C	22°C	20.5°C	23.5°C
25 April	23.2°C	22.8°C	20.5°C	23.3°C
26 April	22.9°C	22.6°C	20.6°C	22.9°C
27 April	23°C	22.9°C	20.6°C	23°C
28 April	23.1°C	22.2°C	20.4°C	23.3°C
29 April	22.9°C	22.1°C	20°C	23.1°C
30 April	22.6°C	22°C	20°C	23.5°C

Average water temperature in Dee Why in April over a decade

2016	2017	2018	2019	2020
22.5°C	23°C	22.3°C	22°C	21.2°C

2021	2022	2023	2024	2025
22°C	22.9°C	22.2°C	22.2°C	23.5°C

Dee Why sea state in April

Chart comparing the height of waves in Dee Why in April over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Dee Why water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Temperature in neighboring cities

The nearest locations with the average water temperature in April. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Shelly Beach	22.2°C	19.6°C	24.7°C
Curl Curl	22.2°C	19.6°C	24.7°C
Freshwater Beach	22.2°C	19.6°C	24.7°C
Shelley Beach	22.2°C	19.6°C	24.7°C
Manly	22.3°C	19.9°C	24.9°C
Narrabeen	22.2°C	19.9°C	24.6°C
Collaroy	22.2°C	19.9°C	24.6°C
Clontarf	22.2°C	19.5°C	24.8°C
Camp Cove	22.2°C	19.5°C	24.8°C
Watsons Bay	22.2°C	19.5°C	24.8°C

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Our report for Dee Why is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature