17.09
thu
thu
Day
75°F
E 9 mph
Precip.
2%
2%
Night
70°F
NE 5 mph
Precip.
7%
7%
18.09
fri
fri
Day
75°F
NE 7 mph
Precip.
3%
3%
Night
70°F
N 6 mph
Precip.
5%
5%
19.09
sat
sat
Day
77°F
NE 7 mph
Precip.
2%
2%
Night
72°F
NE 6 mph
Precip.
20%
20%
20.09
sun
sun
Day
75°F
NE 8 mph
Precip.
3%
3%
Night
70°F
N 7 mph
Precip.
11%
11%
21.09
mon
mon
Day
73°F
N 10 mph
Precip.
4%
4%
Night
70°F
N 6 mph
Precip.
7%
7%
22.09
tue
tue
Day
73°F
NE 7 mph
Precip.
4%
4%
Night
70°F
NE 4 mph
Precip.
7%
7%
23.09
wed
wed
Day
75°F
NE 7 mph
Precip.
4%
4%
Night
72°F
N 4 mph
Precip.
8%
8%
sea water
temperature
temperature
| Newport Beach |
monthly
weather
weather
| Newport Beach |
current
weather
weather
| Newport Beach |
14 days
forecast
forecast
| Newport Beach |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 73.9°F. The highest and lowest sea temperatures during the month were 77.0°F and 72.1°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 66.2°F. The highest and lowest sea temperatures during the month were 68.0°F and 64.8°F.
Air temperature in Newport Beach, °F
Precipitation total in Newport Beach, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Newport Beach
Newport Beach on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Newport Beach
Local time: 02:28
September 17, thursday
0300
70°F
NE
4 mph
4 mph
0600
70°F
NE
2 mph
2 mph
0900
72°F
NE
3 mph
3 mph
1200
75°F
E
9 mph
9 mph
1500
73°F
NE
12 mph
12 mph
1800
73°F
NE
11 mph
11 mph
2100
72°F
NE
6 mph
6 mph
September 18, friday
0000
70°F
NE
5 mph
5 mph
