Weather in September
is the month with the coldest seawater in Grand River South East
, with an average sea temperature of 23.4°C (74.1°F).Note
: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 23.4°C (74.1°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)
The average length of the day in September is 11h and 59min.
On the first day of September in Grand River South East, sunrise is at 06:17 and sunset at 18:00. On the last day of the month, sunrise is at 05:51 and sunset at 18:06 +04.