Sonderborg weather in September 2025

Expect daytime maximum temperatures of 63°F in Sonderborg, Denmark in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 2.8 inches of rainfall in the month.

  • 63°F maximum daytime temperature in September in Sonderborg63
    63°F max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in September in Sonderborg15
    15 days with some rainfall
  • 50°F minimum night-time temperature in September in Sonderborg50
    50°F min night temperature
  • 13 hours of daylight per day in September in Sonderborg13
    13 hours of daylight per day
  • No heat & humidity in September in Sonderborg0
    No heat & humidity
  • 2.8 inches monthly rainfall in September in Sonderborg2.8
    2.8 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Sonderborg3
    3 (Moderate) UV index
  • 61°F sea temperature in September in Sonderborg61
    61°F sea temperature

More about Sonderborg

Sonderborg by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Denmark

TUI: up to 8% off holidays booked online

  • Book online with TUI & save up to 8% on holidays
  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost
Go to TUI deal >>

View all TUI offers

TUITUI deal finder

The September weather guide for Denmark (Sonderborg) 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)  |  Imperial (°F)

Back to top

More about Denmark

How warm is it in Sonderborg in September?

Daytime temperatures usually reach 63°F in Sonderborg in September, falling to 50°F at night.

How sunny is it in Sonderborg in September?

There are normally 5 hours of bright sunshine each day in Sonderborg in September - that's 38% of daylight hours.

How warm is the sea around Sonderborg in September?

The average sea temperature around Sonderborg in September is 61°F.

Does it rain in Sonderborg in September?

There are usually 15 days with some rain in Sonderborg in September and the average monthly rainfall is 2.8 inches.

Sonderborg September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:28 19:13
Monday, 15th September 2025 05:54 18:37
Tuesday, 30th September 2025 06:22 17:59

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^