Climate averages 1991–2020
Trieste weather
in July.
A warm, moderately wet month: the 2nd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Trieste: daytime highs average 27.4°C and nights cool to about 18.7°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 87 mm of rain on roughly 11 days, which makes July a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 15 h 19 min on an average July day.
The nearest other city in this atlas is Udine (63 km away). In July its highs average 26.2°C, 1.2°C cooler than Trieste, with 78 mm of rain.
Among the 79 cities listed in Italy, Trieste ranks joint 68th of 79 for the warmest July highs and 74th of 79 for the driest July (rainfall, lowest first). The mean July high of those 79 cities is 28.9°C; Trieste is 1.5°C cooler than that mean.
From July to August, average highs rise by 0.2°C to 27.7°C, and monthly rainfall rises from 87 mm to 111 mm.
The annual picture
July 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
Trieste climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.2°C1.1°C | 1.1°C | 90 | 9.5 | 9.19 h |
| February | 8.6°C1.1°C | 1.1°C | 97 | 8.7 | 10.310 h |
| March | 12.4°C4.1°C | 4.1°C | 101 | 9.7 | 11.912 h |
| April | 16.4°C7.8°C | 7.8°C | 110 | 12.1 | 13.513 h |
| May | 20.6°C12.3°C | 12.3°C | 122 | 13.0 | 14.915 h |
| June | 24.8°C16.4°C | 16.4°C | 111 | 12.1 | 15.616 h |
| July, selected | 27.4°C18.7°C | 18.7°C | 87 | 10.7 | 15.315 h |
| August | 27.7°C18.9°C | 18.9°C | 111 | 10.2 | 14.114 h |
| September | 22.3°C14.8°C | 14.8°C | 170 | 11.4 | 12.613 h |
| October | 17.4°C10.8°C | 10.8°C | 184 | 13.0 | 11.011 h |
| November | 12.3°C6.5°C | 6.5°C | 195 | 13.2 | 9.510 h |
| December | 8.0°C2.0°C | 2.0°C | 129 | 10.1 | 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
July in nearby cities
- Udine in JulyItaly · 63 kmHigh 26.2°C · Low 16.2°C · 78 mm rain
- Rijeka in JulyCroatia · 63 kmHigh 27.6°C · Low 18.9°C · 77 mm rain
- Ljubljana in JulySlovenia · 72 kmHigh 25.3°C · Low 15.8°C · 95 mm rain
- Klagenfurt am Wörthersee in JulyAustria · 116 kmHigh 24.5°C · Low 15.1°C · 140 mm rain
- Treviso in JulyItaly · 119 kmHigh 27.8°C · Low 17.9°C · 67 mm rain
- Mestre in JulyItaly · 120 kmHigh 27.8°C · Low 19.3°C · 63 mm rain
- Padua in JulyItaly · 150 kmHigh 28.8°C · Low 18.9°C · 62 mm rain
- Zagreb in JulyCroatia · 172 kmHigh 27.5°C · Low 17.2°C · 77 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 Trieste) is explained once on the Trieste year overview and on the Sources, method and limits page.