29.09
tue
tue
Day
81°F
E 6 mph
Precip.
1%
1%
Night
70°F
N 1 mph
Precip.
4%
4%
30.09
wed
wed
Day
82°F
NE 6 mph
Precip.
1%
1%
Night
70°F
NE 1 mph
Precip.
4%
4%
01.10
thu
thu
Day
88°F
E 6 mph
Precip.
0%
0%
Night
75°F
NE 1 mph
Precip.
2%
2%
02.10
fri
fri
Day
91°F
E 6 mph
Precip.
0%
0%
Night
81°F
N 1 mph
Precip.
1%
1%
03.10
sat
sat
Day
99°F
E 6 mph
Precip.
0%
0%
Night
84°F
NW 2 mph
Precip.
0%
0%
04.10
sun
sun
Day
99°F
E 4 mph
Precip.
0%
0%
Night
86°F
W 2 mph
Precip.
0%
0%
05.10
mon
mon
Day
97°F
NE 5 mph
Precip.
0%
0%
Night
84°F
NW 3 mph
Precip.
1%
1%
06.10
tue
tue
Day
95°F
E 6 mph
Precip.
0%
0%
Night
84°F
NW 2 mph
Precip.
0%
0%
07.10
wed
wed
Day
99°F
E 6 mph
Precip.
0%
0%
Night
88°F
W 4 mph
Precip.
0%
0%
08.10
thu
thu
Day
100°F
NE 6 mph
Precip.
1%
1%
Night
88°F
SW 2 mph
Precip.
1%
1%
09.10
fri
fri
Day
100°F
SW 9 mph
Precip.
0%
0%
Night
86°F
W 2 mph
Precip.
0%
0%
10.10
sat
sat
Day
97°F
SW 16 mph
Precip.
0%
0%
Night
81°F
N 2 mph
Precip.
1%
1%
11.10
sun
sun
Day
93°F
W 13 mph
Precip.
7%
7%
Night
79°F
W 8 mph
Precip.
9%
9%
12.10
mon
mon
Day
90°F
NE 6 mph
Precip.
0%
0%
Night
79°F
NE 4 mph
Precip.
1%
1%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 73.8°F. The highest and lowest sea temperatures during the month were 77.2°F and 72.0°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 66.0°F. The highest and lowest sea temperatures during the month were 67.8°F and 64.4°F.
Air temperature in Irvine, °F
Precipitation total in Irvine, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Irvine
Irvine on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Irvine
Local time: 20:41
September 29, tuesday
2100
73°F
N
6 mph
6 mph
September 30, wednesday
0000
70°F
N
1 mph
1 mph
0300
70°F
N
3 mph
3 mph
0600
68°F
N
2 mph
2 mph
0900
73°F
N
2 mph
2 mph
1200
82°F
NE
6 mph
6 mph
1500
82°F
NE
8 mph
8 mph
1800
77°F
NE
6 mph
6 mph
