Byblos weather in September 2025

Expect 27°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Byblos in September. Check more long-term weather averages for Byblos in September before you book your next holiday to Lebanon in 2025/2026.

  • 27°C maximum daytime temperature in September in Byblos27
    27°C max day temperature
  • 10 hours of sunshine per day
  • 1 day with some rainfall in September in Byblos1
    1 day with some rainfall
  • 14°C minimum night-time temperature in September in Byblos14
    14°C min night temperature
  • 12 hours of daylight per day in September in Byblos12
    12 hours of daylight per day
  • Moderate heat & humidity in September in ByblosM
    Moderate heat & humidity
  • 2 mm monthly rainfall in September in Byblos2
    2 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Byblos8
    8 (Very High) UV index
  • 28°C sea temperature in September in Byblos28
    28°C sea temperature

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The September weather guide for Lebanon (Byblos) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Byblos in September?

Daytime temperatures usually reach 27°C in Byblos in September with moderate heat and humidity, falling to 14°C at night.

How sunny is it in Byblos in September?

There are normally 10 hours of bright sunshine each day in Byblos in September - that's 81% of daylight hours.

How warm is the sea around Byblos in September?

The average sea temperature around Byblos in September is 28°C.

Does it ever rain in Byblos in September?

There is usually 1 day with some rain in Byblos in September and the average monthly rainfall is 2mm.

Byblos September sunrise & sunset times

Browse the sunrise and sunset times for Byblos in September 2025. Select a month to view Byblos sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:11 18:03
Monday, 15th September 2025 05:21 17:44
Tuesday, 30th September 2025 05:31 17:23

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