Editing Trieste (section)

===Climate===
[[File:Trieste (28766391880).jpg|thumb|View of Trieste]]
Trieste's climate is [[Humid subtropical climate|humid subtropical]] ([[Köppen climate classification|Köppen]]: ''Cfa'', [[Trewartha climate classification|Trewartha]]: ''Cf''), with cool winters and hot summers. On average, relative humidity is low (~ 65%), while only three months (January, March and July) receive slightly less than {{convert|60|mm|0|abbr=on}} of precipitation.

Trieste, like the Istrian Peninsula, has evenly distributed rainfall above {{convert|900|mm|0|abbr=on}} in total; it is noteworthy that no true summer drought occurs. [[Snow]] occurs on average 2 days per year.<ref name=RLigure>{{cite journal|author1=Roberto Pedemonte|title=La neve sulle coste del Maditerraneo (seconda parte)|journal=Rivista Ligure|date=May 2012|volume=12|issue=44|url=http://www.nimbus.it/liguria/rlm44/neve_mediterraneo.htm|access-date=28 June 2014|location=Genova|language=it}}</ref>

Winter highs are lower than the average temperatures in the Mediterranean zone. Two basic weather patterns alternate — sunny, windy and often cold days frequently caused a northeastern wind called bora, and rainy days with temperatures of about {{convert|6|to|11|C|F|0}}. 

Summer is very warm with highs of about {{convert|29|C|F}} and lows above {{convert|20|C|F}}, with hot nights being influenced by the warm seawater. The highest temperature of the last 30 years is {{convert|40.1|C|0|abbr=on}} in 2020, whereas the absolute minimum was {{convert|-7.9|C|0|abbr=on}} in 1996.

The Trieste area is divided into 8a–10a zones according to USDA [[hardiness zoning]]; Villa Opicina (320 to 420 MSL), with an 8a zone in the upper suburban area down to a 10a zone in the shielded and windproof valleys close to the Adriatic sea.

The climate can be severely affected by the [[Bora (wind)|bora]], a very dry and usually cool north-to-northeast [[katabatic wind]] that can last for some days and reach speeds of up to {{convert|140|km/h|0|abbr=on}} on the piers of the port, thus sometimes lowering temperatures to subzero levels.<ref>{{cite web |url=http://triestetimes.com/bora-and-ice-2012/ |archive-url=https://web.archive.org/web/20160304051850/http://triestetimes.com/bora-and-ice-2012/ |url-status=usurped |archive-date=4 March 2016 |title=Bora and Ice |publisher=The Trieste Times |access-date=20 May 2015 }}</ref>

{{Weather box
|width = auto
|location = Trieste (1991-2020 normals and extremes)
|metric first = Yes
|single line = Yes
|Jan record high C = 18.2
|Feb record high C = 18.2
|Mar record high C = 23.8
|Apr record high C = 29.8
|May record high C = 32.2
|Jun record high C = 36.8
|Jul record high C = 37.4
|Aug record high C = 38.0
|Sep record high C = 33.8
|Oct record high C = 30.8
|Nov record high C = 24.4
|Dec record high C = 18.7
|year record high C = 
|Jan high C = 9.0
|Feb high C = 9.7
|Mar high C = 13.5
|Apr high C = 17.7
|May high C = 22.3
|Jun high C = 26.5
|Jul high C = 29.1
|Aug high C = 29.1
|Sep high C = 24.3
|Oct high C = 19.1
|Nov high C = 14.3
|Dec high C = 10.2
|year high C = 
|Jan mean C = 6.3
|Feb mean C = 6.7
|Mar mean C = 10.0
|Apr mean C = 14.0
|May mean C = 18.5
|Jun mean C = 22.6
|Jul mean C = 25.0
|Aug mean C = 25.0
|Sep mean C = 20.5
|Oct mean C = 15.9
|Nov mean C = 11.5
|Dec mean C = 7.5
|year mean C = 
|Jan low C = 4.2
|Feb low C = 4.2
|Mar low C = 7.1
|Apr low C = 10.6
|May low C = 14.9
|Jun low C = 18.9
|Jul low C = 21.0
|Aug low C = 21.2
|Sep low C = 17.2
|Oct low C = 13.2
|Nov low C = 9.2
|Dec low C = 5.3
|year low C = 
|Jan record low C = −6.8
|Feb record low C = −7.2
|Mar record low C = −6.4
|Apr record low C = 1.2
|May record low C = 0.0
|Jun record low C = 8.4
|Jul record low C = 10.0
|Aug record low C = 11.0
|Sep record low C = 9.2
|Oct record low C = 0.0
|Nov record low C = −1.3
|Dec record low C = −7.3
|year record low C =

|precipitation colour=green
|Jan precipitation mm = 51.5
|Feb precipitation mm = 64.7
|Mar precipitation mm = 56.6
|Apr precipitation mm = 69.4
|May precipitation mm = 80.9
|Jun precipitation mm = 74.9
|Jul precipitation mm = 55.6
|Aug precipitation mm = 74.9
|Sep precipitation mm = 108.3
|Oct precipitation mm = 113.3
|Nov precipitation mm = 117.5
|Dec precipitation mm = 82.5
| Jan snow cm  = 1.0
| Feb snow cm  = 1.4
| Mar snow cm  = 0.6
| Apr snow cm  = 0.0
| May snow cm  = 0.0
| Jun snow cm  = 0.0
| Jul snow cm  = 0.0
| Aug snow cm  = 0.0
| Sep snow cm  = 0.0
| Oct snow cm  = 0.0
| Nov snow cm  = 0.0
| Dec snow cm  = 0.9
| year snow cm = 
|Jan precipitation days = 6.33
|Feb precipitation days = 6.41
|Mar precipitation days = 6.03
|Apr precipitation days = 8.34
|May precipitation days = 8.50
|Jun precipitation days = 7.63
|Jul precipitation days = 5.80
|Aug precipitation days = 6.55
|Sep precipitation days = 7.79
|Oct precipitation days = 8.97
|Nov precipitation days = 10.46
|Dec precipitation days = 7.69
|unit precipitation days = 1.0 mm
| Jan snow days  =1.2
| Feb snow days  =1.0
| Mar snow days  =0.6
| Apr snow days  =0
| May snow days  =0
| Jun snow days  =0
| Jul snow days  =0
| Aug snow days  =0
| Sep snow days  =0
| Oct snow days  =0
| Nov snow days  =0
| Dec snow days  =0.7
| year snow days =

| Jan humidity    =67.54
| Feb humidity    =65.35
| Mar humidity    =63.31
| Apr humidity    =63.82
| May humidity    =64.70
| Jun humidity    =64.76
| Jul humidity    =62.19
| Aug humidity    =62.98
| Sep humidity    =64.60
| Oct humidity    =68.51
| Nov humidity    =69.75
| Dec humidity    =66.96
| year humidity   =
| Jan dew point C =0.3
| Feb dew point C =0.1
| Mar dew point C =2.7
| Apr dew point C =6.7
| May dew point C =11.3
| Jun dew point C =15.2
| Jul dew point C =16.8
| Aug dew point C =16.9
| Sep dew point C =13.1
| Oct dew point C =9.7
| Nov dew point C =6.0
| Dec dew point C =1.3

|Jan sun = 102.3
|Feb sun = 124.7
|Mar sun = 155.4
|Apr sun = 177.0
|May sun = 231.6
|Jun sun = 250.1
|Jul sun = 297.9
|Aug sun = 272.3
|Sep sun = 200.9
|Oct sun = 148.0
|Nov sun = 97.9
|Dec sun = 90.3
| Jan uv  =2
| Feb uv  =3
| Mar uv  =5
| Apr uv  =6
| May uv  =8
| Jun uv  =9
| Jul uv  =9
| Aug uv  =8
| Sep uv  =7
| Oct uv  =5
| Nov uv  =3
| Dec uv  =2
| year uv =

|source 1 =[[NOAA]]<ref>{{Cite web |url=https://www.nodc.noaa.gov/archive/arc0216/0253808/2.2/data/0-data/Region-6-WMO-Normals-9120/Italy/CSV/Trieste_16110.csv |title=WMO climate normals for 1991-2020: Trieste (WMO number:16110) |website=ncei.noaa.gov |publisher=[[NOAA|National Oceanic and Atmosoheric Administration]] |access-date=2 March 2024|no-pp=y |type=Excel |format=CSV }}</ref> (Sun 1981-2010)<ref>{{Cite web |url=https://www.ncei.noaa.gov/pub/data/normals/WMO/1981-2010/RA-VI/Italy/WMO_Normals_CliNo81-10.xls |title=WMO climate normals for 1981-2010: Trieste |website=ncei.noaa.gov |publisher=[[NOAA|National Oceanic and Atmosoheric Administration]] |access-date=2 March 2024 |type=Excel |format=XLS }}</ref>
|source 2 =Weather Atlas(snow),<ref>{{cite web |title=The climate of Trieste |url=https://www.weather-atlas.com/en/italy/trieste-climate |website=weather atlas |access-date=2 March 2024}}</ref> Nomadseason(UV)<ref name="UV">{{cite web |title=UV Index in Trieste, Italy |url=https://nomadseason.com/uv-index/italy/friuli-venezia-giulia/trieste.html |website=Nomadseason |quote=Last updated: February 4, 2024 |access-date=2 March 2024}}</ref>
}}