Best months
May, September, and October
Warmest month
July, 30°C
Wettest month
November, 99 mm
Trieste weather by month
Average daily high and low, total rainfall and days with at least 2.5 mm of rain.
| Month | High / low | Rain | Verdict |
|---|---|---|---|
| January | 10°C / 4°C | 58 mm · 5 days | Cold |
| February | 11°C / 5°C | 74 mm · 6 days | Cold |
| March | 14°C / 7°C | 64 mm · 5 days | Fair |
| April | 19°C / 10°C | 54 mm · 6 days | Fair |
| May | 23°C / 15°C | 79 mm · 6 days | Great |
| June | 28°C / 19°C | 68 mm · 4 days | Good |
| July | 30°C / 21°C | 59 mm · 4 days | Good |
| August | 30°C / 21°C | 81 mm · 5 days | Good |
| September | 25°C / 18°C | 82 mm · 5 days | Great |
| October | 20°C / 13°C | 71 mm · 5 days | Great |
| November | 15°C / 9°C | 99 mm · 7 days | Fair |
| December | 11°C / 6°C | 86 mm · 7 days | Cold |
Trieste by season
Spring
Spring (April-June) is lovely, with mild temperatures, blooming flowers in Miramare Park, and fewer crowds. The infamous Bora wind can still be strong, especially in April.
- + Pleasant weather for walking
- + Beautiful gardens
- + Lower accommodation prices before peak summer
- − Unpredictable Bora wind
- − Sea is still too cold for swimming for most
Summer
Summer (July-August) brings warm, sunny weather perfect for swimming at Barcola and enjoying the lively waterfront. This is peak tourist season and can be humid.
- + Ideal for beach and sea activities
- + Long days and vibrant outdoor café life
- + Full schedule of cultural events and festivals
- − Highest prices and crowds
- − Can be hot and humid
Autumn
Autumn (September-October) is arguably the best time. The sea is still warm, the summer crowds have dispersed, and the Karst landscape takes on beautiful golden hues.
- + Excellent swimming in September
- + Perfect weather for hiking and exploring
- + Grape harvest season in the Karst
- − Increasing chance of rain in late October
- − Shorter days
Winter
Winter (November-March) is cold, windy, and atmospheric. The Bora wind is at its strongest, but the city has a stark, literary beauty, and Christmas markets add cheer.
- + No tourist crowds
- + Authentic local atmosphere
- + Lower prices and cozy cafés
- − Very cold and windy, especially January-February
- − Some attractions have reduced hours
Trieste month by month
Trieste in January
ColdIn January, Trieste averages highs of 10°C and lows of 4°C, with about 5 rainy days and 58 mm of rain. It is cold, so pack warm layers.
Trieste in February
ColdIn February, Trieste averages highs of 11°C and lows of 5°C, with about 6 rainy days and 74 mm of rain. It is cold, so pack warm layers.
Trieste in March
FairIn March, Trieste averages highs of 14°C and lows of 7°C, with about 5 rainy days and 64 mm of rain. Expect mixed weather, with comfortable spells.
Trieste in April
FairIn April, Trieste averages highs of 19°C and lows of 10°C, with about 6 rainy days and 54 mm of rain. Expect mixed weather, with comfortable spells.
Trieste in May
GreatIn May, Trieste averages highs of 23°C and lows of 15°C, with about 6 rainy days and 79 mm of rain. It is one of the most comfortable months for sightseeing.
Trieste in June
GoodIn June, Trieste averages highs of 28°C and lows of 19°C, with about 4 rainy days and 68 mm of rain. It is a good month to visit.
Trieste in July
GoodIn July, Trieste averages highs of 30°C and lows of 21°C, with about 4 rainy days and 59 mm of rain. It is a good month to visit.
Trieste in August
GoodIn August, Trieste averages highs of 30°C and lows of 21°C, with about 5 rainy days and 81 mm of rain. It is a good month to visit.
Trieste in September
GreatIn September, Trieste averages highs of 25°C and lows of 18°C, with about 5 rainy days and 82 mm of rain. It is one of the most comfortable months for sightseeing.
Trieste in October
GreatIn October, Trieste averages highs of 20°C and lows of 13°C, with about 5 rainy days and 71 mm of rain. It is one of the most comfortable months for sightseeing.
Trieste in November
FairIn November, Trieste averages highs of 15°C and lows of 9°C, with about 7 rainy days and 99 mm of rain. Expect mixed weather, with comfortable spells.
Trieste in December
ColdIn December, Trieste averages highs of 11°C and lows of 6°C, with about 7 rainy days and 86 mm of rain. It is cold, so pack warm layers.
Top tours and experiences in Trieste
The tours and tickets travellers book most, with ratings and reviews from Viator.
Trieste Walking Tour with Audio and Written Guide by a Local
4.5110 reviews2h
from €7
Check availability
All things to do in Trieste →
Tours and prices from Viator, a Tripadvisor company. Prices change with your dates. We may earn a commission if you book, at no extra cost to you.
Plan your Trieste trip
Best time to visit Trieste: FAQ
What is the best month to visit Trieste?+
September is the most comfortable month on average, with highs of 25°C. October and May are close behind.
What is the rainiest month in Trieste?+
November is the wettest month, with about 99 mm of rain.
How hot does Trieste get?+
July is the warmest month, with average highs of 30°C and lows of 21°C. The coldest nights come in January, averaging 4°C.
Averages for 2006–2025 from the TRIESTE weather station (2 km from the centre), NOAA Global Historical Climatology Network. Verdicts rate sightseeing comfort from daytime highs and rainy days.