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==Climate== {{See also|Comoro Islands#Climate|l1=Climate}} The climate is marine tropical, with two seasons: hot and humid from November to April, the result of the northeastern monsoon, and a cooler, drier season the rest of the year. Average monthly temperatures range from {{convert|23|to|28|°C|°F|1}} along the coasts. Although the average annual precipitation is {{convert|2000|mm|in|1|sp=us}}, water is a scarce commodity in many parts of the Comoros. Mohéli and Mayotte possess streams and other natural sources of water, but Grande Comore and Anjouan, whose mountainous landscapes retain water poorly, are almost devoid of naturally occurring running water. Cyclones, occurring during the hot and wet season, can cause extensive damage, especially in coastal areas. On the average, at least twice each decade houses, farms, and harbor facilities are devastated by these great storms. ===Tropical cyclones=== {{main|Tropical cyclones in the Comoros Islands}} Due to their low latitude, the islands are rarely affected by tropical cyclones.<ref name="comoros">{{cite web|publisher=[[Logistics Cluster]]|title=Comoros Humanitarian Background|accessdate=July 25, 2021|url=https://dlca.logcluster.org/display/public/DLCA/1.1+Comoros+Humanitarian+Background|archive-date=July 25, 2021|archive-url=https://web.archive.org/web/20210725172521/https://dlca.logcluster.org/display/public/DLCA/1.1+Comoros+Humanitarian+Background|url-status=live}}</ref> However, several cyclones have had damaging and deadly effects. Cyclones in December 1905 and again in December 1906 led to a famine that killed 490 people between August 1905 and January 1906.<ref>{{cite report|url=https://www.islandvulnerability.org/docs/lewis1982UNCTAD2.pdf|title=The Economic and Social Effects of Natural Disasters on the Least Developed and Developing Island Countries: With special reference to Antigua and Barbuda, Republic of Cape Verde, Comoros Federal Islamic Republic (and Mayotte), Republic of the Maldives, Western Samoa|date=October 1982|author=James Lewis|publisher=United Nations Office of the Disaster Relief Coordinator|accessdate=December 16, 2024|pages=128-134}}</ref> A tropical cyclone in 1950 killed 585 people while moving through Anjouan and Moheli, injuring 70,000 others. The cyclone left 40,000 people homeless, and also caused ₣3.5 worth of damage to crops and infrastructure.<ref>{{cite report|url=https://pdf.usaid.gov/pdf_docs/PNAAT767.pdf|archive-url=https://web.archive.org/web/20170221082430/http://pdf.usaid.gov/pdf_docs/pnaat767.pdf|url-status=dead|archive-date=February 21, 2017|format=PDF|title=Island Countries of the Indian Ocean: A Regional Profile|publisher=United States Office of Foreign Disaster Assistance|date=November 1984|author=Dennis J. King|author2=Faye Henderson|author3=Cynthia Davis|accessdate=December 16, 2024}}</ref> ===Weather=== {{Weather box | location = Moroni, Comoros | single line = Y | metric first = Y | Jan record high C = 34 | Feb record high C = 34 | Mar record high C = 35 | Apr record high C = 34 | May record high C = 33 | Jun record high C = 32 | Jul record high C = 31 | Aug record high C = 31 | Sep record high C = 31 | Oct record high C = 33 | Nov record high C = 34 | Dec record high C = 36 | year record high C = 36 | Jan high C = 30.4 | Feb high C = 30.4 | Mar high C = 30.8 | Apr high C = 30.4 | May high C = 29.5 | Jun high C = 28.4 | Jul high C = 27.7 | Aug high C = 27.7 | Sep high C = 28.1 | Oct high C = 29.1 | Nov high C = 30.3 | Dec high C = 30.8 | year high C = 29.5 | Jan low C = 23.4 | Feb low C = 23.3 | Mar low C = 23.0 | Apr low C = 22.6 | May low C = 21.2 | Jun low C = 19.6 | Jul low C = 18.8 | Aug low C = 18.4 | Sep low C = 19.0 | Oct low C = 20.3 | Nov low C = 21.6 | Dec low C = 22.6 | year low C = 21.2 | Jan record low C = 20 | Feb record low C = 20 | Mar record low C = 20 | Apr record low C = 20 | May record low C = 17 | Jun record low C = 14 | Jul record low C = 14 | Aug record low C = 14 | Sep record low C = 15 | Oct record low C = 16 | Nov record low C = 18 | Dec record low C = 19 | year record low C = 14 | rain colour = green | Jan rain mm = 364 | Feb rain mm = 293 | Mar rain mm = 279 | Apr rain mm = 316 | May rain mm = 256 | Jun rain mm = 266 | Jul rain mm = 244 | Aug rain mm = 150 | Sep rain mm = 108 | Oct rain mm = 97 | Nov rain mm = 108 | Dec rain mm = 219 | year rain mm = 2700 | Jan rain days = 18 | Feb rain days = 16 | Mar rain days = 18 | Apr rain days = 18 | May rain days = 12 | Jun rain days = 12 | Jul rain days = 12 | Aug rain days = 10 | Sep rain days = 11 | Oct rain days = 12 | Nov rain days = 12 | Dec rain days = 16 | year rain days = 167 | Jan humidity = 79 | Feb humidity = 77 | Mar humidity = 76 | Apr humidity = 74 | May humidity = 69 | Jun humidity = 66 | Jul humidity = 65 | Aug humidity = 65 | Sep humidity = 70 | Oct humidity = 73 | Nov humidity = 69 | Dec humidity = 72 | year humidity = 71 | Jan sun = 187 | Feb sun = 177 | Mar sun = 225 | Apr sun = 192 | May sun = 232 | Jun sun = 231 | Jul sun = 236 | Aug sun = 232 | Sep sun = 221 | Oct sun = 237 | Nov sun = 230 | Dec sun = 212 | year sun = 2612 | source 1 = [[World Meteorological Organization]]<ref name = WMO>{{cite web | url = http://worldweather.wmo.int/058/c00311.htm | title = World Weather Information Service – Moroni | publisher = [[World Meteorological Organization]] | access-date = 14 April 2013}}</ref> | source 2 = BBC weather,<ref name = weather1>{{cite web | url = http://www.bbc.co.uk/weather/921772 | title = Average Conditions - Moroni | publisher = BBC | access-date = 14 April 2013}}</ref> [[Danish Meteorological Institute]] (sun and relative humidity, 1931–1960)<ref name=DMI>{{cite web | last1 = Cappelen | first1 = John | last2 = Jensen | first2 = Jens | archive-url = https://web.archive.org/web/20130427173827/http://www.dmi.dk/dmi/tr01-17.pdf | archive-date = April 27, 2013 | url = http://www.dmi.dk/dmi/tr01-17.pdf | work = Climate Data for Selected Stations (1931-1960) | title = Comorerne - Ile Moroni | page = 70 | publisher = Danish Meteorological Institute | language = da | access-date = April 14, 2013}}</ref> }}
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