The highest day temperature in October 2026 was 88°F. The lowest night temperature was 67°F. The average values for day and night temperatures during October were 80.4°F и 78.3°F respectivly.

The average sea surface temperature in October 2026 for Grand Isle was 83.2°F. The maximum and minimum values were 76.8°F and 88.6°F respectively.

Most of the days in October are sunny but you can also expect cloudy and gloomy days.

Precipitation total in October for Grand Isle is 0.8 in. It makes october one of the least rainy months of the year.

The average wind speed in October is 12.3 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 Grand Isle in October is 7.7 hours.