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Trieste in January: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Trieste in January will be like? Take a look at our weather guide for Trieste, based on historical data.
Check flight prices to Trieste on Avionero:
January

Weather in Trieste in January 2025

Good Weather
Cool
☁️
Cloudy
Are you considering a trip to Trieste in January? Well, the weather is usually on your side with an average maximum temperature of +9°C and about 9 sunny days. Just keep in mind that there may be some rain, with an average of 6 rainy days and 80 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.
Good to know:
  • January is usually the coldest month of the year in Trieste;

Average weather

☀️
+9°C
Avg. max. temperature
-12°C
Min.
+17°C
Max.
80 mm
Total precipitation
69%
Avg. humidity
1 m/s
Avg. wind
9 ☀️
Sunny Days
16 ⛅️
Cloudy
6 🌦
Rainy
Our opinion: Trieste has good weather in January.

Average temperature in Trieste in January

Here are the expected maximum, average and minimum temperatures in Trieste for January based on the historical data.
Last Year
Historical Data

Going from a maximum of +15°C during the day to a minimum of -2°C during the night, the temperature in January averages around +10°C.

The average maximum temperature goes up 6% by the end of the month, compared with the beginning of the month, from +9°C to +10°C.

Is Trieste warm or cold in January?

Trieste is typically cool in January.

Maximum temperatures go down compared to the previous month from +10°C to +9°C. The minimum temperature also goes down from +4°C to +3°C.

Pack a sweater and a jacket as there will be cooler temperatures.

January is the coldest month in Trieste, here is the comparison with other months:

Climate in Trieste in January

Trieste weather looks like this, on average, in January and the surrounding months.
DecemberJanuaryFebruary
Avg. temperature
+10°C+9°C+10°C
Min. temperature
-8°C-12°C-12°C
Max. temperature
+18°C+17°C+21°C
Rainfall
112 mm80 mm81 mm
Wind
2 m/s1 m/s2 m/s
Humidity
69%69%67%
Air pressure
1017 HPa1018 HPa1016 HPa
Sunny days
1099
Cloudy days
131613
Rainy days
866
Snowy days
000

January weather is still as good as in December. It’s getting colder in January. From +10°C in the day, the average maximum temperature lowers to +9°C. As January arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 112 mm to 80 mm. Humidity levels don’t change as the month goes on, averaging around 69%. Winds are calmer in comparison to December, going down from 2 m/s to 1 m/s on average. The days becoming less sunny, going from 10 sunny days in December to 9 in January.

February brings much the same weather, it remains good.

Wind

Wind speed in Trieste in January based on historical data.
Last Year
Historical Data

The average wind speed is 1 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Trieste is gradually increasing during January, going from 0 m/s to 1 m/s over the course of the month.

Rain

Amount of rainfall in mm during January in Trieste based on historical data.
Last Year
Historical Data
Typically, there is a 19% chance of rain on an average day in January, with total rainfall of approximately 35 mm. The maximum amount of rainfall per day is around 19 mm, which is considered light rain. On average, there are about 6 rainy days during January, so prepare to bring an umbrella.
Here’s how January is compared with other months in the amount of precipitation, total mm:
Trieste wettest month is November, where a typical day has a 33% chance of precipitation and 162 mm of rainfall per day. July, on the other hand, is the driest month with a mere 19% chance of precipitation and 71 mm of rainfall per day.

Snow

Amount of snow in mm during January in Trieste based on historical data.
Last Year
Historical Data
The total snow in January is about 0 mm, with a 0% chance of snow on a typical day.

January is one of the snowiest months in Trieste.

Here’s how January is compared with other months in the amount of snow, total mm:

How was the weather last January in Trieste?

This is the weather in Trieste in January 2023:
1 January
☀️
+9°C
2 January
☁️
+9°C
3 January
☁️
+9°C
4 January
🌧️
+9°C
5 January
🌧️
+15°C
6 January
🌧️
+10°C
7 January
☀️
+7°C
8 January
☀️
+8°C
9 January
☁️
+7°C
10 January
☀️
+10°C
11 January
☀️
+10°C
12 January
☀️
+9°C
13 January
☀️
+10°C
14 January
☀️
+10°C
15 January
☀️
+13°C
16 January
☀️
+13°C
17 January
☀️
+11°C
18 January
☀️
+12°C
19 January
☀️
+11°C
20 January
☁️
+8°C
21 January
☀️
+9°C
22 January
☁️
+8°C
23 January
☀️
+10°C
24 January
☀️
+9°C
25 January
☀️
+9°C
26 January
☀️
+9°C
27 January
☁️
+7°C
28 January
☀️
+10°C
29 January
☀️
+11°C
30 January
☀️
+12°C
31 January
☁️
+10°C
In January 2023 Trieste had 21 sunny days, 7 cloudy days, and 3 rainy days. The average maximum temperature was +10°C, with an absolute maximum of +15°C and a minimum of +7°C. The average humidity was 53%, with a maximum of 100% and a minimum of 6%. The average wind speed was 1 m/s, with a maximum of 8 m/s and a minimum of 0 m/s.
Are you planning a trip in January?

Climate Change over Years

This is how Trieste climate have been changing during last 43 years period.

The climate in Trieste in January has not changed much over the last 43 years.

The average temperature was the lowest in 1985 (+6°C) and the highest in 2020 (+14°C). The driest year was 1989 with only 0 mm of rainfall, and the wettest year was 2014 with 314 mm.

FAQ

Frequently asked questions about the weather in Trieste in January:

Is January a good time to visit Trieste?

January is a really good time to go to Trieste. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Trieste.

Can you sunbathe in Trieste in January?

Not really, January is not the best time to sunbathe, unless you visit a local solarium.

Is Trieste rainy in January?

Trieste is often rainy in January. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Trieste in January?

Usually, it’s not very sunny in Trieste in January, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Italy

Check out the weather for 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, 2022.

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.