The highest day temperature in September 2025 was 71°F. The lowest night temperature was 44°F. The average values for day and night temperatures during September were 62.3°F и 53.7°F respectivly.

The average sea surface temperature in September 2025 for Liverpool was 61.5°F. The maximum and minimum values were 58.4°F and 65.6°F respectively.

Most of the days in September are gloomy but you can also expect sunny days.

Precipitation total in September for Liverpool is 2.9 in.

The average wind speed in September is 9.8 mph.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Liverpool in September is 5.8 hours.