Editing Thrissur (section)

== Geography ==
{{Main|Geography of Thrissur}}

[[File:Koal fileds of Thrissur.jpg|thumb|The [[Thrissur Kole Wetlands|Thrissur-Ponnani Kole Wetlands]] is one of largest, highly productive and threatened wetlands in Kerala. It acts as natural drainage for City of Thrissur.|alt=|left]]

Thrissur is the headquarters of [[Thrissur district]], in the center of the Indian state of Kerala. The city is 75&nbsp;km north-east of [[Kochi, India|Kochi]], 133&nbsp;km south-west of [[Coimbatore]], 124&nbsp;km south-east of [[Kozhikode]] and 151&nbsp;km north of [[Changanacherry]].<ref name=":0">{{cite web |url=http://www.adb.org/Documents/Reports/Consultant/32300-IND/32300-02-Thrissur-IND-TACR.pdf |title=Geography and Climate |publisher=ADB |access-date=16 May 2010 |url-status=dead |archive-url=https://web.archive.org/web/20120612064216/http://www2.adb.org/Documents/Reports/Consultant/32300-IND/32300-02-Thrissur-IND-TACR.pdf |archive-date=12 June 2012 }}</ref> The city is located in a hillock called [[Thekkinkadu Maidan]] which is the second highest point in the city after the [[Vilangan Hills]]. The city has an average altitude of 2.83 meters above sea level.<ref name=":0" />

From the hillock, the city gradually flattens into the [[Thrissur-Ponnani Kole Wetlands]], which act as natural drainage for the city. The water from the wetlands flows via rivers into the [[Laccadive Sea]], keeping Thrissur city safe from the major flooding that affects most other cities in Kerala.<ref>{{cite web
|url=http://www.hindu.com/mag/2007/10/14/stories/2007101450020200.htm
|archive-url=https://web.archive.org/web/20071016093454/http://hindu.com/mag/2007/10/14/stories/2007101450020200.htm
|url-status=dead
|archive-date=16 October 2007
|work=[[The Hindu]]
|title=Warning bells in Kole
|date=2007-10-14
|access-date=23 June 2012}}</ref><ref>{{cite web
|url=http://www.ecoinsee.org/6bconf/Theme%20A/AB.3.2%20Jeena.pdf
|title=Agriculture-wetland interactions and sustainability of rice cultivation in the Kole land, Kerala
|publisher=Jeena T Srinivasan
|access-date=23 June 2012}}</ref><ref>{{cite web
|url=http://www.hindu.com/2011/01/08/stories/2011010860470300.htm
|archive-url=https://web.archive.org/web/20110424070830/http://www.hindu.com/2011/01/08/stories/2011010860470300.htm
|url-status=dead
|archive-date=24 April 2011
|work=[[The Hindu]]
|title=Project to protect kole wetlands
|date=2011-01-08
|access-date=23 June 2012}}</ref><ref>{{cite web
|url=http://www.hindu.com/2011/04/18/stories/2011041854330700.htm
|archive-url=https://web.archive.org/web/20110719072933/http://www.hindu.com/2011/04/18/stories/2011041854330700.htm
|url-status=dead
|archive-date=19 July 2011
|work=[[The Hindu]]
|title=Migratory fish spotted in kole land
|date=2011-04-18
|access-date=23 June 2012}}</ref>

The city is located in the midland region of Kerala, with an extended part of the Palakkad plains.<ref name="Jose">Jose AI, Paulose S, Prameela P & Bonny BP (eds), 2002, [http://www.kau.edu/pop/map_of_agro_zones.htm Package of Practices Recommendations: Crops] {{Webarchive|url=https://web.archive.org/web/20051219053217/http://www.kau.edu/pop/map_of_agro_zones.htm |date=19 December 2005 }}, Kerala Agricultural University. Retrieved 18 January 2006.</ref> The city geologically is composed of Archaean gneisses and crystalline schists. Major parts of the city are covered by [[Archean|Archaean]] rocks.<ref>{{cite web
 |url         = http://210.212.239.30/tsr/evolution&geography.htm
 |title       = Geography
 |publisher   = Thrissur Municipal Corporation
 |access-date  = 27 November 2010
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20120426034621/http://210.212.239.30/tsr/evolution%26geography.htm
 |archive-date = 26 April 2012
}}</ref> The city lies near the center of the Indian tectonic plate (the Indian Plate) and is subject to comparatively little [[seismic]] or [[volcanic]] activity.
[[File:Vadakkechira 2013 december.JPG|thumb|Ponds and canals in [[Vadakkechira, Thrissur]] prevent flooding during monsoon season.|alt=|left]]

=== Climate ===
Under the [[Köppen climate classification]], the City of Thrissur features a [[tropical monsoon climate]] (''Am''). Summer lasts from March to May which is the hottest time of the year. Summer months are uncomfortable due to higher levels of heat and humidity. Daytime temperatures can rise up to {{convert|36|to|38|°C|°F|1}} coupled with excessive humidity. Summer is followed by the [[south-west monsoon|southwest monsoon]] from June to September. October and November form the post-monsoon or retreating monsoon season. Winter from December through February is cooler, and windy, due to winds from the [[Western Ghats]]. Winter months are generally dry and less humid compared to other months of the year. Morning temperatures are usually cool and daytime temperatures hover around {{convert|30|°C|°F|disp=or}}.<ref name="Climate">{{cite web |url=http://www.tsr.kerala.gov.in/gen.htm |title=Climate |publisher=Kerala Government |access-date=22 September 2010 |url-status=dead |archive-url=https://web.archive.org/web/20110208205700/http://www.tsr.kerala.gov.in/gen.htm |archive-date=8 February 2011 }}</ref>

The city is drenched in the monsoonal season by heavy showers. The average annual rainfall is approximately {{convert|3100|mm|in|0|disp=or}}. The South-west monsoon generally sets in during the last week of May. After July the rainfall decreases. On average, there are 124 rainy days in a year. The maximum average temperature of the city in the summer season is {{convert|36|°C|°F|1|disp=or}} while the minimum temperature recorded is {{convert|27|°C|°F|1|disp=or}}. The winter season records a maximum average of {{convert|31|°C|°F|1|disp=or}} and a minimum average of {{convert|20|°C|°F|disp=or}}.<ref name="Climate" />

{{Weather box
| width       = auto
| metric first = yes
| single line = yes
| location    = Thrissur ([[Vellanikkara]]) 1991–2020
| Jan record high C = 35.9
| Feb record high C = 39.7
| Mar record high C = 40.4
| Apr record high C = 39.9
| May record high C = 38.3
| Jun record high C = 36.2
| Jul record high C = 33.0
| Aug record high C = 33.3
| Sep record high C = 35.3
| Oct record high C = 35.4
| Nov record high C = 34.9
| Dec record high C = 35.5
| year record high C = 
| Jan high C = 33.1
| Feb high C = 34.8
| Mar high C = 35.7
| Apr high C = 34.9
| May high C = 33.3
| Jun high C = 30.2
| Jul high C = 29.5
| Aug high C = 29.8
| Sep high C = 30.6
| Oct high C = 31.5
| Nov high C = 32.0
| Dec high C = 32.0
| year high C = 32.2
| Jan low C = 22.2
| Feb low C = 22.7
| Mar low C = 24.4
| Apr low C = 25.1
| May low C = 24.7
| Jun low C = 23.6
| Jul low C = 23.0
| Aug low C = 23.1
| Sep low C = 23.0
| Oct low C = 22.9
| Nov low C = 22.9
| Dec low C = 22.5
| year low C = 23.3
| Jan record low C = 16.5
| Feb record low C = 16.9
| Mar record low C = 18.9
| Apr record low C = 19.9
| May record low C = 20.2
| Jun record low C = 19.6
| Jul record low C = 18.5
| Aug record low C = 19.6
| Sep record low C = 20.3
| Oct record low C = 18.0
| Nov record low C = 16.9
| Dec record low C = 16.6
| year record low C = 
| rain colour = green
| Jan rain mm = 0.4
| Feb rain mm = 19.0
| Mar rain mm = 27.8
| Apr rain mm = 60.1
| May rain mm = 214.3
| Jun rain mm = 615.8
| Jul rain mm = 596.6
| Aug rain mm = 484.4
| Sep rain mm = 320.6
| Oct rain mm = 289.7
| Nov rain mm = 95.9
| Dec rain mm = 8.4
| year rain mm = 2732.9
| Jan rain days = 0.1
| Feb rain days = 0.7
| Mar rain days = 1.7
| Apr rain days = 3.8
| May rain days = 8.3
| Jun rain days = 22.0
| Jul rain days = 23.6
| Aug rain days = 18.3
| Sep rain days = 13.8
| Oct rain days = 12.0
| Nov rain days = 4.8
| Dec rain days = 0.8
| year rain days = 109.9
| time day = 17:30 [[Indian Standard Time|IST]]
|Jan humidity=46
|Feb humidity=47
|Mar humidity=59
|Apr humidity=66
|May humidity=71
|Jun humidity=82
|Jul humidity=82
|Aug humidity=80
|Sep humidity=78
|Oct humidity=77
|Nov humidity=70
|Dec humidity=57
|year humidity=68
| source 1 = [[India Meteorological Department]]<ref>{{cite web
| url = https://imdpune.gov.in/library/public/Climatological%20Tables%201991-2020.pdf
| title = Climatological Tables of Observatories in India 1991-2020
| publisher = [[India Meteorological Department]]
| access-date = April 8, 2024
}}</ref>}}