September - OCEANSIDE HARBOR - Weather History and Averages

High Temperatures

On average, the day in September with the warmest high temperature in OCEANSIDE HARBOR is September 5 at an average of 71.0 °F (21.7 °C).

On average, the day in September with the coldest high temperature in OCEANSIDE HARBOR is September 19 at an average of 67.1 °F (19.5 °C).

The warmest recorded high temperature in September in OCEANSIDE HARBOR was 76.8 °F (24.9 °C) on September 11 in the year 1984 at OCEANSIDE HARBOR — Integrated Surface Dataset (ISD) station ID: 722929 .

The coldest recorded high temperature in September in OCEANSIDE HARBOR was 63.9 °F (17.7 °C) on September 25 in the year 1993 at OCEANSIDE HARBOR — Integrated Surface Dataset (ISD) station ID: 722929 .

On average, the day in September with the warmest low temperature in OCEANSIDE HARBOR is September 7 at an average of 66.3 °F (19.1 °C).

On average, the day in September with the coldest low temperature in OCEANSIDE HARBOR is September 21 at an average of 61.0 °F (16.1 °C).

The warmest recorded low temperature in OCEANSIDE HARBOR was 74.8 °F (23.8 °C) on September 11 in the year 1984 at OCEANSIDE HARBOR — Integrated Surface Dataset (ISD) station ID: 722929 .

The coldest recorded low temperature in OCEANSIDE HARBOR was 52.0 °F (11.1 °C) on September 22 in the year 1988 at OCEANSIDE HARBOR — Integrated Surface Dataset (ISD) station ID: 722929 .

If you would like to see the temperatures for specific days, you can click on the corresponding links below: