Rijeka weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: June – August
What is the weather like in Rijeka in August?
In August, Rijeka is hot: daytime highs average 28 °C, and nights cool down to about 20 °C. The sea averages 23.6 °C – pleasant for swimming. With around 10 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 10 rainy days and 115 mm in total. On about 9 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Rijeka.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 89 | 90 | 57 |
| Day | 28° | 28° | 23° |
| Night | 20° | 20° | 16° |
| Sea | 24° | 24° | 21° |
| Sun | 10 h | 10 h | 7 h |
| Rain days | 11 | 10 | 12 |
More details for August
- Daylight
- 14 h 10 min06:02 – 20:12
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 6 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 39 %on averageAll months
- Hot days
- 9 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2Europe/Zagreb
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %94 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %56 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Rain jacket or umbrella
Rijeka in August: quick answers
Is Rijeka hot in August?
Yes. In August, Rijeka is hot: daytime highs average 28 °C and nights stay around 20 °C. On about 9 days the thermometer climbs to 30 °C or more.
Can you swim in Rijeka in August?
Yes. In August the sea averages 23.6 °C – pleasant for swimming.
Does it rain much in Rijeka in August?
Rain is frequent, with about 10 rainy days and 115 mm in total.
Rijeka month by month
The whole year in RijekaAll destinations: CroatiaWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences