Trieste weather in March

In March, Trieste sees average daytime highs of 11°C and overnight lows near 5°C, with 101 mm of precipitation across 9.7 wet days and about 11.6 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 9°C in the first days to 12°C by the end. The sky is clear or mostly clear about 37% of the time in March, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of March to 12 h 24 min by month's end. Set against the rest of the year, March is Trieste's 6th-clearest and 6th-windiest month. For the whole year in context, see Trieste's year-round climate.

Daytime high
11°
9th warmest
Overnight low
4th coldest
Precipitation
101 mm
9.7 wet days
Daylight
11 h 36 min
6:27 AM – 6:03 PM
Cloud cover
55%
6th clearest
Wind
10 km/h
6th windiest
Solar energy
3.49 kWh/m²
Travel score
2.7
out of 10
Air quality
Moderate
PM2.5 12 µg/m³ · 2019

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 9°C in the first days to 12°C by the end.

A typical March day in Trieste reaches about 11°C in the afternoon and slips back to 5°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 15°C. Set against its neighbours, March runs about 4°C warmer than February and about 4°C cooler than April.

-5°10°15°20°151015202531
Avg high (°C)Avg low (°C)
193
293
393
494
594
6104
7104
8104
9104
10104
11104
12114
13115
14115
15115
16115
17115
18115
19115
20115
21125
22125
23126
24126
25126
26126
27126
28126
29126
30136
31136

How March really feels in Trieste

Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

March sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Trieste weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 909.52.78.90.5
Feb / 978.62.910.11.1
Mar11° / 1019.71.611.62.7
Apr15° / 11012.10.513.34.2
May19° / 13°12213014.75.8
Jun23° / 17°11112.2015.46.7
Jul26° / 19°8710.7015.17.0
Aug26° / 19°11110.3013.97.0
Sep21° / 15°17011.4012.36.4
Oct16° / 11°184130.110.74.8
Nov11° / 19513.21.19.32.5
Dec / 12910.12.18.60.9

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 15% of March, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24852
34852
45050
55149
65149
75248
85248
95347
105446
115545
125644
135743
145743
155743
165743
175545
185545
195446
205347
215248
225248
235149
245050
255050
265050
274951
284951
294951
305050
315050

Chance of precipitation in March

Any precipitationSnow

Trieste gets around 101 mm of rain and snow over 9.7 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 30% and peaks near 38% on the wettest days, and about 2 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13410
2349
3339
4338
5328
6317
7307
8296
9286
10276
11265
12255
13255
14244
15244
16254
17254
18264
19274
20284
21304
22314
23324
24334
25344
26354
27364
28364
29374
30373
31383

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

Most of March feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, March lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in March

Winds average 10 km/h in March.

Across March, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in March

DaylightNight

Daylight runs from about 10 h 48 min at the start of March to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 96 minutes over March. Sunrise moves from 6:54 AM to 5:57 AM, and sunset from 5:42 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.86:545:42
210.86:535:43
310.96:515:45
411.06:495:46
511.06:475:47
611.16:455:49
711.16:445:50
811.26:425:52
911.26:405:53
1011.36:385:54
1111.36:365:56
1211.46:345:57
1311.46:325:59
1411.56:306:00
1511.56:286:01
1611.66:276:03
1711.76:256:04
1811.76:236:05
1911.86:216:07
2011.86:196:08
2111.96:176:09
2211.96:156:11
2312.06:136:12
2412.06:116:13
2512.16:096:15
2612.26:076:16
2712.26:056:17
2812.36:036:19
2912.36:016:20
3012.45:596:21
3112.45:576:23

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 3.49 kWh/m².

For context, solar energy here swings from a low near 1.14 kWh/m² to a high of 6.28 kWh/m² in July across the year — March's 3.49 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
12.8Moderate
22.9Moderate
32.9Moderate
43.0Moderate
53.0Moderate
63.1Moderate
73.1Moderate
83.2Moderate
93.2Moderate
103.3Moderate
113.3Moderate
123.4Moderate
133.4Moderate
143.5Moderate
153.5Moderate
163.5Moderate
173.6Moderate
183.6Moderate
193.6Moderate
203.7Moderate
213.7Moderate
223.8Moderate
233.8Moderate
243.8Moderate
253.9Moderate
263.9Moderate
274.0Moderate
284.0Bright
294.0Bright
304.1Bright
314.2Bright
Planning a trip in March

Is March a good time to visit Trieste?

Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

2.7
Sightseeing
8th-best month of the year
0.0
Beach & pool
9th-best month of the year

March is a weaker month for outdoor sightseeing in Trieste.

What to pack for Trieste in March

From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In March, Trieste sees daytime highs around 11°C and nights near 5°C. Pack a warm layer. Worth having: rain gear. About 10 days see rain.

a warm layerrain gear

Sea temperature near Trieste in March

The nearest coast averages about 10°C in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 25°C and coldest in February near 10°C.

It's comfortable for a long swim from May 31 to Oct 9 — about 4.3 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb10Bracing
Mar10Bracing
Apr13Bracing
May18Cool
Jun23Refreshing
Jul25Warm
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov16Cool
Dec13Bracing

UV index in Trieste in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Trieste peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr7High
May7High
Jun8Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Trieste in March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March falls, not just the annual average.

Air quality in Trieste is worst in January — around 16 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (September, 9 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Trieste's WHO annual average of 12 µg/m³.

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateJan 1816 µg/m³Sep 149 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb14Moderate
Mar14Moderate
Apr13Moderate
May11Good
Jun12Good
Jul12Good
Aug10Good
Sep9Good
Oct10Good
Nov10Good
Dec13Moderate
Location & terrain

Where is Trieste?

Trieste sits at 45.6°N, 13.8°E, 2 m above sea level, in Italy. The nearest listed city is Koper, 12 km away.

Topography around Trieste

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Trieste.

Within 3 km, the terrain around Trieste has significant variations in elevation — a maximum elevation change of 451 m around an average of 72 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 779 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,524 m.

The land around Trieste is covered by artificial surfaces (41%), trees (31%) and water (27%) within 3 km, trees (50%) and water (32%) within 16 km, and trees (52%) and water (23%) within 80 km.

3 km
451 m
16 km
779 m
80 km
2,524 m
treesshrubsgrasslandcroplandartificial surfaceswater
March weather nearby: Koper 12 km · Divača 16 km · Piran 21 km · Monfalcone 26 km · Gorizia 35 km · Nova Gorica 36 km · Postojna 37 km · Udine 63 km

Italy travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / L
230 V · 50 Hz
Prices
≈ 69% of US
price level, 2025
GDP per capita
$43,309
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 513
Religion
Christian 81%unaffiliated 13%Muslim 5%other 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Trieste (45.6495°, 13.7768°, elevation 2 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).