Climate averages 1991–2020
Trieste weather
in October.
A mild, very wet month: the 6th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Trieste: daytime highs average 17.4°C and nights cool to about 10.8°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 184 mm of rain on roughly 13 days, which makes October a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 59 min on an average October day.
The nearest other city in this atlas is Udine (63 km away). In October its highs average 16.4°C, 1.0°C cooler than Trieste, with 169 mm of rain.
Among the 79 cities listed in Italy, Trieste ranks 67th of 79 for the warmest October highs and 78th of 79 for the driest October (rainfall, lowest first). The mean October high of those 79 cities is 19.6°C; Trieste is 2.2°C cooler than that mean.
From October to November, average highs fall by 5.1°C to 12.3°C, and monthly rainfall rises from 184 mm to 195 mm.
The annual picture
October 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 | 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, selected | 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
October in nearby cities
- Udine in OctoberItaly · 63 kmHigh 16.4°C · Low 8.4°C · 169 mm rain
- Rijeka in OctoberCroatia · 63 kmHigh 17.3°C · Low 10.7°C · 208 mm rain
- Ljubljana in OctoberSlovenia · 72 kmHigh 14.6°C · Low 7.3°C · 117 mm rain
- Klagenfurt am Wörthersee in OctoberAustria · 116 kmHigh 14.2°C · Low 6.9°C · 121 mm rain
- Treviso in OctoberItaly · 119 kmHigh 17.7°C · Low 10.0°C · 126 mm rain
- Mestre in OctoberItaly · 120 kmHigh 18.0°C · Low 11.4°C · 121 mm rain
- Padua in OctoberItaly · 150 kmHigh 18.4°C · Low 10.6°C · 107 mm rain
- Zagreb in OctoberCroatia · 172 kmHigh 16.6°C · Low 8.1°C · 80 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.