Weather in Trieste in October 2025
Average weather
Average temperature in Trieste in October
Going from a maximum of +27°C during the day to a minimum of +9°C during the night, the temperature in October averages around +23°C.
The average maximum temperature goes down 33% by the end of the month, compared with the beginning of the month, from +26°C to +20°C.
Is Trieste warm or cold in October?
Trieste is typically mild in October.
Maximum temperatures go down compared to the previous month from +24°C to +19°C. The minimum temperature also goes down from +16°C to +12°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how October is compared to other months in Trieste:
Water temperature in Trieste in October
Water in Trieste in October is Fresh. It varies from +16°C to +22°C, with an average of +19°C. This is almost similar to the air temperature, which averages +19°C.
In October, water temperatures are average relative to the rest of the year:
Can you swim in Trieste in October?
Climate in Trieste in October
| September | October | November | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +24°C | +19°C | +14°C | ||||
| Min. temperature | ||||||
| +6°C | -1°C | -4°C | ||||
| Max. temperature | ||||||
| +32°C | +30°C | +24°C | ||||
| Rainfall | ||||||
| 152 mm | 156 mm | 163 mm | ||||
| Wind | ||||||
| 1 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +23°C | +19°C | +16°C | ||||
| Humidity | ||||||
| 67% | 70% | 71% | ||||
| Air pressure | ||||||
| 1015 HPa | 1017 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 11 | 10 | 7 | ||||
| Cloudy days | ||||||
| 5 | 6 | 8 | ||||
| Rainy days | ||||||
| 10 | 13 | 13 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
October weather is still as good as in September. It’s getting colder in October. From +24°C in the day, the average maximum temperature lowers to +19°C. Prepare for more rain. Average rainfall goes from 152 mm to 156 mm. Humidity rises from 67% to 70%. Winds are stronger in comparison to September, going up from 1 m/s to 2 m/s on average. The days becoming less sunny, going from 11 sunny days in September to 10 in October.
Next month (November) brings a further decline in the weather.
Wind
The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Trieste is gradually increasing during October, going from 2 m/s to 3 m/s over the course of the month.
Rain
How was the weather last October in Trieste?
Climate Change over Years
The climate in Trieste in October has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+17°C) and the highest in 2022 (+20°C). The driest year was 2003 with only 712 mm of rainfall, and the wettest year was 2019 with 2509 mm.
FAQ
Is October a good time to visit Trieste?
Can you sunbathe in Trieste in October?
Can you swim in Trieste in October?
Is Trieste rainy in October?
Is it sunny in Trieste in October?
Other cities in Italy
Monthly weather in Trieste
Source of the data
For this page, we’ve looked at the typical weather in Trieste, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.