Current sea water temperature:
+40.6°F
| Minimum sea water temperature in May: | 49.3°F |
| Maximum sea water temperature in May: | 32.9°F |
| Average sea water temperature in May: | 41.5°F |
| more information | |
14 days
forecast
forecast
| Sydney |
monthly
weather
weather
| Sydney |
Sea water temperature for the last 10 days:
| May 17 | 40.6°F | May 12 | 39.9°F |
| May 16 | 39.4°F | May 11 | 40.8°F |
| May 15 | 39.6°F | May 10 | 40.8°F |
| May 14 | 40.5°F | May 9 | 40.1°F |
| May 13 | 40.5°F | May 8 | 40.8°F |
Monthly sea water temperature, °F
When is the warmest sea in Sydney?
Based on the data about daily sea water temperature for the last three years the warmest sea in Sydney was noticed in August, September and July.
Monthly Sea Temperatures in Sydney, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 67.5°F. The highest and lowest sea temperatures during the month were 69.8°F and 65.8°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 64.8°F. The highest and lowest sea temperatures during the month were 68.2°F and 60.6°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 63.7°F. The highest and lowest sea temperatures during the month were 68.5°F and 56.8°F.
current
weather
weather
| Sydney |
weather in
May
May
| Sydney |
Best time for vacation in Sydney
Sydney on a weather map
Places in Canada:
Name
°F
24 Hours Forecast
Sydney
Local time: 17:09
May 17, sunday
1800
61°F
E
10 mph
10 mph
2100
52°F
SE
9 mph
9 mph
May 18, monday
0000
48°F
SE
11 mph
11 mph
0300
46°F
SE
12 mph
12 mph
0600
45°F
SE
12 mph
12 mph
0900
50°F
SE
14 mph
14 mph
1200
52°F
SE
14 mph
14 mph
1500
52°F
SE
16 mph
16 mph
