The highest day temperature in September 2026 was 88°F. The lowest night temperature was 73°F. The average values for day and night temperatures during September were 83.2°F и 77.2°F respectivly.

The average sea surface temperature in September 2026 for Byblos was 88.6°F. The maximum and minimum values were 86.6°F and 89.8°F respectively.

Almost all days in September are sunny. There is very low probability of clouds or gloomy days.

Precipitation total in September for Byblos is 0.2 in. It makes september one of the least rainy months of the year.

The average wind speed in September is 5.7 mph. This value is relatively stable throughout the year.

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 Byblos in September is 11.5 hours.