- Book online & save up to 5% on Marella Cruises
- Discount varies by season. Book online with TUI
- Destinations across the Med, Caribbean & USA
Rijeka weather in September 2025
Expect 20°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Rijeka in September. Check more long-term weather averages for Rijeka in September before you book your next holiday to Croatia in 2025/2026.
- 2020°C max day temperature
- 7 hours of sunshine per day
- 1313 days with some rainfall
- 99°C min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 143143 mm of monthly rainfall
- 55 (Moderate) UV index
- 2121°C sea temperature
More about Rijeka
- Overview
- Best time to visit
- Weather by month
- 5-day weather forecast
- Destinations
- Travel advice
- Deals & discounts
Rijeka by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Croatia
Cruise deal finder
The September weather guide for Croatia (Rijeka) 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)
More about Croatia
How hot is it in Rijeka in September?
Daytime temperatures usually reach 20°C in Rijeka in September, falling to 9°C at night.
How sunny is it in Rijeka in September?
There are normally 7 hours of bright sunshine each day in Rijeka in September - that's 52% of daylight hours.
How warm is the sea around Rijeka in September?
The average sea temperature around Rijeka in September is 21°C.
Does it rain in Rijeka in September?
There are usually 13 days with some rain in Rijeka in September and the average monthly rainfall is 143mm.
Rijeka September sunrise & sunset times
Browse the sunrise and sunset times for Rijeka in September 2025. Select a month to view Rijeka sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:24 | 18:40 |
Monday, 15th September 2025 | 05:41 | 18:13 |
Tuesday, 30th September 2025 | 05:59 | 17:44 |
Be inspired
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Related posts
Popular travel offers
Explore holidays in the sun for less
- Beach holidays
- Family holidays
- City breaks
- Summer holidays
- Winter sun holidays
- Holiday offers
- Top travel brands
- Airlines & flights
- Discount hotels
- Airport parking deals
- TUI
- Jet2holidays
- easyJet holidays
- Love Holidays
- Black Friday sales
Airport parking
- Manchester Airport
- Stansted Airport
- Bristol Airport
- Luton Airport
- Birmingham Airport
- Edinburgh Airport
- Gatwick Airport
- Glasgow Airport
- Newcastle Airport
Airport lounges
- Manchester Airport
- Birmingham Airport
- Bristol Airport
- Edinburgh Airport
- Glasgow Airport
- Heathrow Airport
- Newcastle Airport
- Stansted Airport
- Gatwick Airport