Best Time to Visit Trieste: Weather Month by Month

Q: What is the best time to visit Trieste?

July is the best month with 29.0°C highs, 20.0°C lows, 9.6h of sunshine and 19.0% rainy days. The months of July & August offer comparable conditions.

Q: How many hours of sunshine does Trieste get in July?

Trieste averages 9.6 sunshine hours per day in July. It is the sunniest month with a climate score of 8.5/10.

Q: What is the rainiest month in Trieste?

January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.

Q: What are the temperatures at night in Trieste in July?

In July, overnight lows reach 20.0°C, while afternoon highs average 29.0°C.

Q: Is Trieste good in winter?

In winter (December-February), Trieste scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 8.5/10.

Q: When should you avoid Trieste?

January is the most difficult month to visit Trieste, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.

Decide

When to visit Trieste?

The decision rests on several criteria. Climate score, tourist crowds and feasible activities.

Verdict: In Trieste, July and August clearly stand out. December concentrates the least favourable conditions.

Top & avoid

🏆 July · 8.9 August · 8.7 June · 8.5 September · 8.0 ⚠️ December · 4.0

4.0

Jan

4.2

Feb

4.4

Mar

7.2

Apr

7.7

May

8.5

Jun

8.9

Jul

8.7

Aug

8.0

Sep

7.3

Oct

4.1

Nov

4.0

Dec

Best period · ≥ 7 Decent period · 4 – 7 Tough conditions · < 4

What you grasp in 5 seconds

Trieste offers 7 comfortable months, without any month really to avoid. The gap stays moderate: 8.9 in July vs 4.0 in December.

What to check next

Your tolerance for crowds and budget. The best months concentrate tourist saturation and higher prices. Shoulder seasons offer a good compromise.

Next action

Scroll down to the detailed table to compare month by month, then open the page of the month that interests you.

Compare the 12 months By your project

How we calculate the score

The score combines 4 weighted criteria using 10 years of real climate data (ERA5).

Source : ERA5 · Open-Meteo · 10 years (2016–2025) · Full methodology →

Understand

Compare all 12 months

Month-by-month details: temperature, rain, sunshine, score and verdict.

✅ 7 comfortable months (Apr · May · Jun · Jul · Aug · Sep · Oct)

Month	T° min	T° max	Rain %	mm/day	Sun	Score	Verdict
🌥️ January →	2°C	9°C	20%	3.4mm	3.3h	4.0/10	Decent period
🌥️ February →	4°C	11°C	23%	3.9mm	4.4h	4.2/10	Decent period
🌥️ March →	6°C	14°C	19%	3.4mm	5.0h	4.4/10	Decent period
⛅ April →	9°C	17°C	28%	3.2mm	5.9h	7.2/10	Best period
☀️ May →	13°C	21°C	27%	5.2mm	7.5h	7.7/10	Best period
☀️ June →	18°C	27°C	25%	3.0mm	8.3h	8.5/10	Best period
☀️ July →	20°C	29°C	19%	3.4mm	9.6h	8.9/10	Best period
☀️ August →	21°C	29°C	21%	3.0mm	8.8h	8.7/10	Best period
☀️ September →	17°C	24°C	26%	6.3mm	6.7h	8.0/10	Best period
⛅ October →	13°C	19°C	29%	5.7mm	4.8h	7.3/10	Best period
🌥️ November →	8°C	14°C	35%	6.3mm	3.3h	4.1/10	Decent period
🌥️ December →	4°C	10°C	25%	4.0mm	2.9h	4.0/10	Decent period

🌥️ January

4.0/10

T°2°C / 9°C

Rain %20%

Sun3.3h

Decent period

🌥️ February

4.2/10

T°4°C / 11°C

Rain %23%

Sun4.4h

Decent period

🌥️ March

4.4/10

T°6°C / 14°C

Rain %19%

Sun5.0h

Decent period

⛅ April

7.2/10

T°9°C / 17°C

Rain %28%

Best period

Rain %27%

Best period

Rain %25%

Best period

Rain %19%

Best period

Rain %21%

Best period

Rain %26%

Best period

Rain %29%

Best period

T°8°C / 14°C

Rain %35%

Sun3.3h

Decent period

🌥️ December

4.0/10

T°4°C / 10°C

Rain %25%

Sun2.9h

Decent period

📊 Quick read

Optimal window

Apr → Oct

Good transition

Mar · Nov

Tough period

none

🌡️ Detailed conditions (July)

🌡️ Feel

Warm

☀️ UV

7.0 · Moderate-Strong

💧 Humidity feel

17°C · Pleasant

☔ Rain

19% · 3.4 mm/day

🌅 Sunshine

9.6h/day

Week by week

Trieste week by week: your odds of avoiding rain

For each week of the year: in how many years out of 10 it was mostly dry (at most 2 rainy days), 2016 to 2025.

Safest week: Feb 19 to Feb 25, mostly dry in 10 years out of 10 (0.9 rainy day(s) on average).

Most exposed: Apr 23 to Apr 29, mostly dry in 3 years out of 10 (3.2 rainy days on average).

Number = years out of 10 with at most 2 rainy days in the week. Source: ERA5 reanalysis (ECMWF) via Open-Meteo, daily data 2016-2025. Rainy day = at least 1 mm, as everywhere on the site.
Jan	Jan 15/109°C	Jan 88/108°C	Jan 158/108°C	Jan 228/109°C	Jan 295/1010°C
Feb	Feb 57/1010°C	Feb 128/1010°C	Feb 1910/1011°C	Feb 267/1012°C
Mar	Mar 56/1012°C	Mar 128/1013°C	Mar 199/1014°C	Mar 267/1016°C
Apr	Apr 29/1016°C	Apr 95/1017°C	Apr 168/1018°C	Apr 233/1018°C	Apr 307/1020°C
May	May 76/1020°C	May 144/1020°C	May 218/1023°C	May 288/1024°C
Jun	Jun 46/1025°C	Jun 117/1026°C	Jun 189/1028°C	Jun 258/1029°C
Jul	Jul 27/1029°C	Jul 99/1028°C	Jul 167/1029°C	Jul 237/1029°C	Jul 307/1029°C
Aug	Aug 69/1030°C	Aug 1310/1030°C	Aug 208/1029°C	Aug 275/1028°C
Sep	Sep 37/1026°C	Sep 107/1026°C	Sep 178/1023°C	Sep 247/1022°C
Oct	Oct 15/1020°C	Oct 89/1020°C	Oct 157/1019°C	Oct 225/1019°C	Oct 294/1018°C
Nov	Nov 56/1015°C	Nov 127/1013°C	Nov 195/1012°C	Nov 265/1010°C
Dec	Dec 36/1010°C	Dec 107/1010°C	Dec 177/1010°C	Dec 246/1010°C

A specific date? The app computes the same figure day by day.

10-year trend

Annual temperatures — Trieste

Min/max temperature curves observed over the past 10 years (ERA5). Shows climate stability and trend.

Tailor

For your trip

A few angles depending on what kind of trip you are planning.

🏖️ Beaches: Jun-Sept🌊 Swell: Sept-Mar🚤 Water activities

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🏨

Stay

Hotels & rentals · Trieste

Expedia →

🎟️

Activities

Tours, tickets, experiences

See ↓

✈️

Flights

Multi-airline comparator

Kiwi →

🎟️ Activities & tours · Trieste

GetYourGuide selection · free cancellation

See all →

Affiliate link · GetYourGuide

Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.

Country · Italy

🗣️LanguageItalian

💶CurrencyEuro (€)

🚗DrivingRight-hand

🛡️Safety ⓘVery safe · 1/5

💰Cost of living ⓘModerate · 3/5

🌡️ Climate

🌍Climate typeTemperate oceanic

📈Climate trend ⓘStable

🔥Hottest monthJuly · 29°C

❄️Coolest monthJanuary · 9°C

🌧️Rainiest month ⓘNovember · 35%

🏖️ Beach holiday

📅Peak seasonJuin → Sept

🏖️Swell (Sept–Mar) ⓘModérée

🛂VisaSchengen · 90 days

Explore

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Guides & rankings

World ranking 2026See →

Best summer destinationsSee →

Winter sunSee →

Where to go in JulySee →

🗺️ Climate map of 754 destinations

Location

Where is Trieste ?

Global position + regional geographic context.

🌍 World

🔍 Geographic context

Temperate oceanic climate with a 8.9 → 4.0 gap between best and worst month. 10 years of ERA5 data to choose by project.

45.65°N · 13.78°E

Questions

Frequently asked questions

What is the best time to visit Trieste?

July is the best month with 29.0°C highs, 20.0°C lows, 9.6h of sunshine and 19.0% rainy days. The months of July & August offer comparable conditions.

How many hours of sunshine does Trieste get in July?

Trieste averages 9.6 sunshine hours per day in July. It is the sunniest month with a climate score of 8.5/10.

What is the rainiest month in Trieste?

January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.

What are the temperatures at night in Trieste in July?

In July, overnight lows reach 20.0°C, while afternoon highs average 29.0°C.

Is Trieste good in winter?

In winter (December-February), Trieste scores 4.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 8.5/10.

When should you avoid Trieste?

January is the most difficult month to visit Trieste, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.