Room temperature - wikipedia Room temperature For other uses, see Room temperature ( disambiguation ). Mercury - in - glass thermometer showing an ambient temperature within the range of room temperature Colloquially, room temperature is the range of air temperatures that most people prefer for indoor settings, which feel comfortable when wearing typical indoor clothing. As a medical definition, the range generally considered suitable for human occupancy is between 15 degrees Celsius ( 59 degrees Fahrenheit ) and 25 ° C ( 77 ° F ), though human comfort can extend beyond this range depending on humidity, air circulation and other factors. In certain fields, like science and engineering, and within a particular context, room temperature can mean different agreed - on ranges. Contents 1 Comfort levels 2 Definitions in science and industry 3 Ambient versus room temperature 4 Serving temperature of red wine 5 See also 6 References Comfort levels The American Heritage Dictionary of the English Language identifies room temperature as around 20 to 22 ° C ( 68 to 72 ° F ), and the Oxford English Dictionary claims that it is `` conventionally taken as about 20 ° C ( 68 ° F ) ''. Owing to variations in humidity and likely clothing, recommendations for summer and winter may vary ; a suggested typical range for summer is 23 to 25.5 ° C ( 73 to 78 ° F ), with that for winter being 20 to 23.5 ° C ( 68 to 74 ° F ), although by other considerations the maximum should be below 24 ° C ( 75 ° F ) -- and to avoid sick building syndrome, below 22 ° C ( 72 ° F ). The World Health Organisation 's standard for comfortable warmth is 18 ° C ( 64 ° F ) for normal, healthy adults who are appropriately dressed. For those with respiratory problems or allergies, they recommend no less than 16 ° C ( 61 ° F ), and for the sick, disabled, very old or very young, a minimum of 20 ° C ( 68 ° F ). Definitions in science and industry Temperature ranges are defined as room temperature for certain products and processes in industry, science, and consumer goods. For instance, for the shipping and storage of pharmaceuticals, the United States Pharmacopeia - National Formulary ( USP - NF ) defines controlled room temperature as between 20 to 25 ° C ( 68 to 77 ° F ), with excursions between 15 to 30 ° C ( 59 to 86 ° F ) allowed, provided the mean kinetic temperature does not exceed 25 ° C ( 77 ° F ). The European Pharmacopoeia defines it as being simply 15 to 25 ° C ( 59 to 77 ° F ), and the Japanese Pharmacopeia defines `` ordinary temperature '' as 15 to 25 ° C ( 59 to 77 ° F ), with room temperature being 1 to 30 ° C ( 34 to 86 ° F ). Ambient versus room temperature Ambient temperature simply means the temperature of the surrounding air. In any particular room, it is the actual temperature of the air in that room, as measured by a thermometer. It may be very different from usual room temperature, for example an unheated room in winter. Serving temperature of red wine People traditionally serve red wine at room temperature. This practice dates from before central heating, when room temperature in wine - drinking countries was considerably lower than it is today, usually in the range between 15 ° C ( 59 ° F ) and 18 ° C ( 64 ° F ). The advice is therefore to serve the wine at, at most, about 18 ° C ( 64 ° F ). See also Thermal comfort Standard conditions for temperature and pressure ISO 1 References Jump up ^ Merriam Webster 's Medical Dictionary. 2016. Archived from the original on 2010 - 04 - 10. Jump up ^ `` Archived copy ''. Archived from the original on 2017 - 09 - 20. Retrieved 2017 - 09 - 19. Jump up ^ The American Heritage Dictionary of the English Language ( 5th ed. ). 2014. Archived from the original on 2015 - 01 - 08. Jump up ^ Oxford English Dictionary, Third Edition, November 2010 ), sub-entry at room. ^ Jump up to : Burroughs, H.E. ; Hansen, Shirley ( 2011 ). Managing Indoor Air Quality. Fairmont Press. pp. 149 -- 151. Archived from the original on 20 September 2014. Retrieved 25 December 2014. Jump up ^ `` BBC News Magazine : How warm is your home ''. Archived from the original on 2017 - 12 - 31. Jump up ^ `` General Chapter < 659 > Packaging and Storage Requirements '' ( PDF ). United States Pharmacopeia. 1 May 2017. Retrieved 2018 - 04 - 04. Jump up ^ `` What are the regulatory Definitions for `` Ambient '', `` Room Temperature '' and `` Cold Chain '' ? ``. ECA Academy. 2 March 2017. Retrieved 2018 - 04 - 04. Jump up ^ Shein - Chung Chow ( 2007 ). Statistical Design and Analysis of Stability Studies. Chapman & Hall / CRC Biostatistics Series. CRC Press. p. 7. ISBN 9781584889069. Retrieved 4 April 2018. 1.2. 3.3 Definition of Room Temperature : According to the United States Pharmacopeia National Forumlary ( USP - NF ), the definition of room temperature is between 15 and 30 ° C in the United States. However, in the EU, the room temperature is defined as being 15 to 25 ° C, while in Japan, it is defined being 1 to 30 ° C. Jump up ^ Karen MacNeil ( 2015 ). The Wine Bible ( revised second ed. ). Workman Publishing. p. 130. ISBN 978 - 0 - 7611 - 8715 - 8. Retrieved from `` https://en.wikipedia.org/w/index.php?title=Room_temperature&oldid=849914754 '' Categories : Environmental engineering Heating, ventilating, and air conditioning Science experiments Temperature Talk Contents About Wikipedia Afrikaans Aragonés Asturianu Bân - lâm - gú Català Čeština Dansk Deutsch Eesti Español Esperanto Euskara فارسی Frysk Galego 한국어 Bahasa Indonesia Interlingua Italiano עברית Македонски Bahasa Melayu Nederlands 日本 語 Norsk Plattdüütsch Polski Português Русский Scots Simple English Slovenčina Српски / srpski Svenska தமிழ் ไทย Türkçe Українська اردو Tiếng Việt 粵語 中文 34 more Edit links This page was last edited on 12 July 2018, at 08 : 20 ( UTC ). About Wikipedia

Question: what is a comfortable room temperature in the summer
Answer: 23 to 25.5 °C (73 to 78 °F)