Measurements:
°C
°F
Long Beach
74°F
NW 9 mph
Feels like: 80°F
Precip: 7%
World Resorts USA Long Beach Weather

7 Day Weather Forecast

09.15
tue
DAY
76°F
N 9 mph
precip
4%
NIGHT
72°F
N 5 mph
precip
9%
09.16
wed
DAY
74°F
N 7 mph
precip
5%
NIGHT
72°F
NE 4 mph
precip
7%
09.17
thu
DAY
76°F
NE 7 mph
precip
3%
NIGHT
72°F
NE 3 mph
precip
5%
09.18
fri
DAY
76°F
N 6 mph
precip
3%
NIGHT
74°F
NE 4 mph
precip
6%
09.19
sat
DAY
76°F
N 7 mph
precip
4%
NIGHT
72°F
N 6 mph
precip
8%
09.20
sun
DAY
76°F
N 6 mph
precip
6%
NIGHT
74°F
NE 6 mph
precip
21%
09.21
mon
DAY
76°F
NE 7 mph
precip
11%
NIGHT
72°F
NE 4 mph
precip
21%

Long Beach Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Long Beach was 21.9°F. The maximum and minimum values were 21.0°F and 22.8°F respectively.

Long Beach on the Weather Map

Best Time to Visit Long Beach
The most sunny months:
August 21 days
July 21 days
January 20 days
The most warm months:
August 83.2 °F
September 82.2 °F
July 80.7 °F
Warmest sea temperature:
September 69.6 °F
August 69.2 °F
July 68.0 °F
The most cold months:
December 66.1 °F
January 66.5 °F
February 66.9 °F
The most rainy months:
February 2 days
March 2 days
January 2 days
The most windy months:
May 7 mph
April 7 mph
June 7 mph