Trieste, Italy — Weather in May 2027

Climate Overview

Trieste, Italy in May has warm conditions, with highs averaging 20.4°C (69°F). Rain falls on about 17 days this month, totalling around 156 mm. Sea temperature stays cool at 18°C (64°F).

This month falls at the end of Spring.

Daily highs in May gradually rise from around 19°C (66°F) at the start to 22°C (72°F) by month's end.

May sees fairly even rainfall, totalling about 156 mm across the month.

Expect around 10.6h of sunshine at the start of May, increasing to 12.3h by the end.

The warmest days tend to fall around the 27th, averaging 22.6°C (73°F).

Compared to April, this month is about 4°C warmer with 6 more rainy days. Temperatures will rise further into June.

Monthly May Averages

Temperature

20°C / 13°C

Feels Like

21°C / 11°C

Rain

17 days · 156 mm

Sunshine

11.2h / day

Humidity

75% — Humid

Wind

16 km/h

Wind Direction

E (92°)

Gusts

34 km/h

Daylight

14.9 h

Cloud Cover

63%

Clear Sky Days

2.1

UV Index

6 — High

Sea Temperature

18°C

Dew Point

12°C — Comfortable

Moon Phase

Waxing Gibbous · 66%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 05:36

Daylight 14.9h

Sunset 20:30

What to Expect

Daytime temperatures around 20°C (69°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	8°C / 2°C	5°C / -2°C	10days (108 mm) Wet	5.5h Fair	79% Humid	1.5 Low	Poor	View Details
February	10°C / 3°C	7°C / -1°C	9days (110 mm) Wet	6.4h Fair	77% Humid	2.3 Moderate	Poor	View Details
March	13°C / 5°C	11°C / 2°C	10days (106 mm) Wet	8.7h Good	71% Muggy	3.6 Moderate	Fair	View Details
April	17°C / 8°C	15°C / 6°C	11days (106 mm) Wet	10.3h Excellent	70% Muggy	5.1 High	Good	View Details
May	20°C / 13°C	21°C / 11°C	17days (156 mm) Wet	11.2h Excellent	75% Muggy	6 High	Good	View Details
June best	26°C / 18°C	28°C / 19°C	10days (100 mm) Wet	12.9h Excellent	72% Muggy	7 High	Excellent	View Details
July best	28°C / 20°C	31°C / 21°C	11days (93 mm) Wet	13h Excellent	68% Muggy	6.9 High	Excellent	View Details
August best	29°C / 20°C	31°C / 21°C	9days (107 mm) Wet	11.8h Excellent	68% Muggy	6.1 High	Excellent	View Details
September best	23°C / 16°C	24°C / 15°C	12days (198 mm) Wet	9.6h Good	74% Muggy	4.7 Moderate	Excellent	View Details
October	19°C / 12°C	18°C / 10°C	12days (160 mm) Wet	7.7h Good	79% Humid	3 Moderate	Good	View Details
November	13°C / 7°C	11°C / 4°C	13days (186 mm) Wet	5.8h Fair	81% Humid	1.9 Low	Wet	View Details
December	9°C / 3°C	7°C / 0°C	9days (122 mm) Wet	5.1h Fair	81% Humid	1.4 Low	Poor	View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketWaterproof shoesSunscreen (SPF 30+)Sunglasses

Frequently Asked Questions

Expand all

Is May a good time to visit Trieste?

May is typically good for visiting Trieste, with average highs of 20°C (69°F) and around 17 rainy days. Trieste, Italy in May has warm conditions, with highs averaging 20.4°C (69°F). Rain falls on about 17 days this month, t

Does it rain a lot in Trieste in May?

Trieste typically sees around 17 rainy days in May with 156 mm (6.1 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Trieste in May?

Evenings in Trieste during May are mild at 13°C (55°F). A light cardigan is usually enough.

What should I pack for Trieste in May?

With highs of 20°C (69°F) and lows of 13°C (55°F) in May, we recommend: Umbrella, Waterproof jacket, Waterproof shoes, Sunscreen (SPF 30+), Sunglasses. Comfortable walking shoes are essential.

Is May among the best months weather-wise in Trieste?

May is not the most favourable month weather-wise in Trieste. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Trieste in May?

The average UV index in Trieste during May is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.

How many hours of daylight are there in Trieste in May?

Trieste gets approximately 15 hours of daylight per day in May, with around 11 hours of sunshine.

Does it snow in Trieste in May?

Snow is uncommon in Trieste during May based on 10-year climate averages.

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