Planning a trip to Trieste in May? You are in luck! The weather is generally good, with an average maximum temperature of +22°C and approximately 7 sunny days. Just be prepared for some rain, as there are usually around 15 rainy days and 114 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+22°C
Avg. max. temperature
+6°C
Min.
+32°C
Max.
114 mm
Total precipitation
67%
Avg. humidity
1 m/s
Avg. wind
7 ☀️
Sunny Days
6 ⛅️
Cloudy
15 🌦
Rainy
Our opinion: Trieste has good weather in May.
Average temperature in Trieste in May
Here are the expected maximum, average and minimum temperatures in Trieste for May based on the historical data.
Last Year
Historical Data
Going from a maximum of +28°C during the day to a minimum of +12°C during the night, the temperature in May averages around +22°C.
The average maximum temperature goes up 19% by the end of the month, compared with the beginning of the month, from +21°C to +24°C.
Is Trieste warm or cold in May?
Trieste is typically mild in May.
Maximum temperatures go up compared to the previous month from +17°C to +22°C. The minimum temperature also goes up from +10°C to +14°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Trieste:
Water temperature in Trieste in May
Water in Trieste in May is Fresh. It varies from +14°C to +22°C, with an average of +18°C.This is almost similar to the air temperature, which averages +22°C.
In May, water temperatures are average relative to the rest of the year:
The warmest water temperatures in Trieste are reached in August, when the average sea temperature rises to +25°C. The coldest water temperatures are in February, with an average of +9°C.
Can you swim in Trieste in May?
Water temperature (+18°C) in Trieste in May might be suited for short swims and acclimatized swimmers might find it refreshing.
🦭
Cold
Below +16°C
🏄♂️
Fresh
16°C - 21°C
🏊
Comfortable
21°C - 25°C
👙
Warm
25°C - 28°C
🔥
Very warm
+28°C and up
Think of bringing a full-body or shorty wetsuit (3mm-5mm thickness) to provide insulation and maintain body heat.
Climate in Trieste in May
Trieste weather looks like this, on average, in May and the surrounding months.
April
May
June
Avg. temperature
+17°C
+22°C
+26°C
Min. temperature
-2°C
+6°C
+8°C
Max. temperature
+28°C
+32°C
+36°C
Rainfall
103 mm
114 mm
98 mm
Wind
1 m/s
1 m/s
1 m/s
Avg. water temperature
+13°C
+18°C
+23°C
Humidity
66%
67%
67%
Air pressure
1013 HPa
1013 HPa
1013 HPa
Sunny days
7
7
8
Cloudy days
7
6
6
Rainy days
15
15
11
Snowy days
0
0
0
May weather is still as good as in April.It’s getting warmer as May arrives. The average maximum temperature goes up from +17°C to +22°C during the day.Prepare for more rain. Average rainfall goes from 103 mm to 114 mm.Humidity rises from 66% to 67%.The average wind speed doesn’t change much during May, staying around 1 m/s.The amount of sunny days stay about the same, averaging 7 sunny days during the month.
June brings much the same weather, it remains good.
Wind speed in Trieste in May based on historical data.
Last Year
Historical Data
The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Trieste is gradually increasing during May, going from 3 m/s to 4 m/s over the course of the month.
Rain
Amount of rainfall in mm during May in Trieste based on historical data.
Last Year
Historical Data
Typically, there is a 48% chance of rain on an average day in May, with total rainfall of approximately 115 mm. The maximum amount of rainfall per day is around 21 mm, which is considered light rain.May is a pretty wet month with over 15 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how May is compared with other months in the amount of precipitation, total mm:
Trieste wettest month is November, where a typical day has a 43% chance of precipitation and 163 mm of rainfall per day. July, on the other hand, is the driest month with a mere 26% chance of precipitation and 72 mm of rainfall per day.
How was the weather last May in Trieste?
This is the weather in Trieste in May 2023:
1 May
☁️
+21°C
2 May
🌧️
+18°C
3 May
☁️
+19°C
4 May
☀️
+22°C
5 May
☁️
+23°C
6 May
☁️
+24°C
7 May
☁️
+24°C
8 May
☁️
+20°C
9 May
☀️
+21°C
10 May
🌧️
+17°C
11 May
🌧️
+16°C
12 May
🌧️
+18°C
13 May
🌧️
+19°C
14 May
🌧️
+17°C
15 May
🌧️
+21°C
16 May
🌧️
+18°C
17 May
🌧️
+19°C
18 May
☀️
+20°C
19 May
☁️
+21°C
20 May
☁️
+24°C
21 May
☀️
+28°C
22 May
☀️
+28°C
23 May
☀️
+27°C
24 May
☁️
+25°C
25 May
☀️
+27°C
26 May
☀️
+27°C
27 May
☀️
+27°C
28 May
☀️
+27°C
29 May
☀️
+27°C
30 May
☀️
+26°C
31 May
☀️
+24°C
In May 2023 Trieste had 13 sunny days, 9 cloudy days, and 9 rainy days. The average maximum temperature was +22°C, with an absolute maximum of +28°C and a minimum of +16°C. The average humidity was 75%, with a maximum of 100% and a minimum of 48%. The average wind speed was 3 m/s, with a maximum of 11 m/s and a minimum of 0 m/s.
Are you planning a trip in May?
Climate Change over Years
This is how Trieste climate have been changing during last 43 years period.
The climate in Trieste in May 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
Frequently asked questions about the weather in Trieste in May:
Is May a good time to visit Trieste?
May 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 May?
May has mild temperatures in Trieste. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Can you swim in Trieste in May?
In general, you can swim in Trieste in May, if you want to, at an average water temperature of +18°C. But it will feel quite cool, and some precautions are necessary to ensure your comfort and safety.
Is Trieste rainy in May?
Trieste is often rainy in May. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Trieste in May?
Usually, it’s not very sunny in Trieste in May, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
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.
