Climate averages 1991–2020
Rijeka weather
in April.
A mild, wet month: the 7th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Rijeka: daytime highs average 16.5°C and nights cool to about 8.1°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 114 mm of rain on roughly 13 days, which makes April a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 29 min on an average April day.
The nearest other city in this atlas is Trieste (63 km away). In April its highs average 16.4°C, about as warm as Rijeka, with 110 mm of rain.
Among the 4 cities listed in Croatia, Rijeka ranks 4th of 4 for the warmest April highs and 4th of 4 for the driest April (rainfall, lowest first). The mean April high of those 4 cities is 17.0°C; Rijeka is 0.5°C cooler than that mean.
From April to May, average highs rise by 4.3°C to 20.7°C, and monthly rainfall rises from 114 mm to 120 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Rijeka climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.8°C0.7°C | 0.7°C | 122 | 11.5 | 9.29 h |
| February | 8.1°C0.9°C | 0.9°C | 128 | 10.8 | 10.410 h |
| March | 12.1°C4.0°C | 4.0°C | 123 | 11.6 | 11.912 h |
| April, selected | 16.5°C8.1°C | 8.1°C | 114 | 13.0 | 13.513 h |
| May | 20.7°C12.6°C | 12.6°C | 120 | 13.7 | 14.915 h |
| June | 24.9°C16.7°C | 16.7°C | 94 | 12.0 | 15.616 h |
| July | 27.6°C18.9°C | 18.9°C | 77 | 10.0 | 15.315 h |
| August | 27.9°C19.0°C | 19.0°C | 90 | 8.7 | 14.114 h |
| September | 22.3°C14.8°C | 14.8°C | 177 | 11.8 | 12.613 h |
| October | 17.3°C10.7°C | 10.7°C | 208 | 13.4 | 11.011 h |
| November | 12.2°C6.5°C | 6.5°C | 223 | 14.4 | 9.610 h |
| December | 7.7°C2.0°C | 2.0°C | 169 | 12.2 | 8.89 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Trieste in AprilItaly · 63 kmHigh 16.4°C · Low 7.8°C · 110 mm rain
- Ljubljana in AprilSlovenia · 81 kmHigh 15.1°C · Low 5.3°C · 90 mm rain
- Udine in AprilItaly · 125 kmHigh 15.7°C · Low 5.5°C · 104 mm rain
- Bihać in AprilBosnia and Herzegovina · 126 kmHigh 16.3°C · Low 6.0°C · 110 mm rain
- Zagreb in AprilCroatia · 131 kmHigh 16.9°C · Low 6.1°C · 67 mm rain
- Klagenfurt am Wörthersee in AprilAustria · 145 kmHigh 14.5°C · Low 4.9°C · 96 mm rain
- Maribor in AprilSlovenia · 165 kmHigh 16.2°C · Low 5.9°C · 71 mm rain
- Mestre in AprilItaly · 172 kmHigh 16.8°C · Low 8.4°C · 82 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Rijeka) is explained once on the Rijeka year overview and on the Sources, method and limits page.