Weather in Rijeka in september
Climate normals based on 10 years of historical data for Rijeka, Horvaatia.
Average high
22°C
Average low
15°C
Rainfall
199 mm
11 rainy days
Sunshine
5.0h/day
Niiskus
72%
How Hot Is Rijeka in september?
Rijeka starts to ease back from summer's peak — afternoon highs of 22°C and overnight lows of 15°C in September. A 6°C cooler reading than August, but next month (October) will drop further.
Sunshine Hours in september
Mixed weather is typical in Rijeka this September: 5.0h of sun a day on average.
Does It Rain In Rijeka In september?
Heavy rain is common in Rijeka: 199mm across 11 days in September.
Is Rijeka Humid In september?
Humid air dominates Rijeka in September: 72% on average makes warm days feel hotter.
Wind In Rijeka In september
September brings gentle winds to Rijeka — averaging 16 kph.
Cloud Cover In Rijeka In september
Rijeka's September runs cloudy: typical cloud cover of 51%.
Cities With Similar Weather In september
Weather in Rijeka, month by month
| Month | High / Low | Vihm | |
|---|---|---|---|
| Jaanuari ilm | 7°C / 1°C | 201mm | Details → |
| Veebruari ilm | 9°C / 2°C | 226mm | Details → |
| Märtsi ilm | 11°C / 4°C | 174mm | Details → |
| Aprilli ilm | 15°C / 7°C | 129mm | Details → |
| Mai ilm | 19°C / 12°C | 186mm | Details → |
| Juuni ilm | 25°C / 17°C | 87mm | Details → |
| Juuli ilm | 28°C / 19°C | 63mm | Details → |
| Augusti ilm | 28°C / 19°C | 87mm | Details → |
| Septembri ilm | 22°C / 15°C | 199mm | |
| Oktoobri ilm | 17°C / 11°C | 257mm | Details → |
| Novembri ilm | 12°C / 6°C | 280mm | Details → |
| Detsembri ilm | 8°C / 2°C | 235mm | Details → |