6/6/2019 Summer - Wikipedia

Summer
Summer is the hottest of the four temperate seasons, falling after spring and
before autumn. At the summer solstice, the days are longest and the nights are
shortest, with day length decreasing as the season progresses after the solstice.
The date of the beginning of summer varies according to climate, tradition, and
culture. When it is summer in the Northern Hemisphere, it is winter in the
Southern Hemisphere, and vice versa.

Contents
Summer timing
Weather
Holidays A field during summer in Belgium
School breaks
Public holidays
Activities
See also
References

Summer timing
From an astronomical view, the equinoxes and solstices would be the middle of the respective seasons,[1][2] but
sometimes astronomical summer is defined as starting at the solstice, the time of maximal insolation, often identified
with the 21st day of June or December. A variable seasonal lag means that the meteorological center of the season,
which is based on average temperature patterns, occurs several weeks after the time of maximal insolation.[3] The
meteorological convention is to define summer as comprising the months of June, July, and August in the northern
hemisphere and the months of December, January, and February in the southern hemisphere.[4][5] Under
meteorological definitions, all seasons are arbitrarily set to start at the beginning of a calendar month and end at the
end of a month.[4] This meteorological definition of summer also aligns with the commonly viewed notion of summer
as the season with the longest (and warmest) days of the year, in which daylight predominates. The meteorological
reckoning of seasons is used in Australia, Austria, Denmark, Russia and Japan. It is also used by many in the United
Kingdom. In Ireland, the summer months according to the national meteorological service, Met Éireann, are June,
July and August. However, according to the Irish Calendar, summer begins on 1 May and ends on 1 August. School
textbooks in Ireland follow the cultural norm of summer commencing on 1 May rather than the meteorological
definition of 1 June.

Days continue to lengthen from equinox to solstice and summer days progressively shorten after the solstice, so
meteorological summer encompasses the build-up to the longest day and a diminishing thereafter, with summer
having many more hours of daylight than spring. Reckoning by hours of daylight alone, summer solstice marks the
midpoint, not the beginning, of the seasons. Midsummer takes place over the shortest night of the year, which is the
summer solstice, or on a nearby date that varies with tradition.

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Where a seasonal lag of half a season or more is common, reckoning based on astronomical markers is shifted half a
season.[6] By this method, in North America, summer is the period from the summer solstice (usually 20 or 21 June in
the Northern Hemisphere) to the autumn equinox.[7][8][9]

Reckoning by cultural festivals, the summer season in the United States is traditionally regarded as beginning on
Memorial Day weekend (the last Weekend in May) and ending on Labor Day (the first Monday in September), more
closely in line with the meteorological definition for the parts of the country that have four-season weather. The similar
Canadian tradition starts summer on Victoria Day one week prior (although summer conditions vary widely across
Canada's expansive territory) and ends, as in the United States, on Labour Day.

In Chinese astronomy, summer starts on or around 5 May, with the jiéqì (solar term) known as lìxià ( 立 夏 ), i.e.
"establishment of summer", and it ends on or around 6 August.

In southern and southeast Asia, where the monsoon occurs, summer is more generally defined as lasting from March,
April, May and June, the warmest time of the year, ending with the onset of the monsoon rains.

Because the temperature lag is shorter in the oceanic temperate southern hemisphere,[10] most countries in this region
use the meteorological definition with summer starting on 1 December and ending on the last day of February.[11][12]

Weather
Summer is traditionally associated with hot or warm weather. In the
Mediterranean regions, it is also associated with dry weather, while in other
places (particularly in Eastern Asia because of the Monsoon) it is associated
with rainy weather. The wet season is the main period of vegetation growth
within the savanna climate regime.[13] Where the wet season is associated
with a seasonal shift in the prevailing winds, it is known as a monsoon.[14]

In the northern Atlantic Ocean, a distinct tropical cyclone season occurs

from 1 June to 30 November.[15] The statistical peak of the Atlantic
Wet season thunderstorm at night in
hurricane season is 10 September. The Northeast Pacific Ocean has a
Darwin, Australia.
broader period of activity, but in a similar time frame to the Atlantic.[16]
The Northwest Pacific sees tropical cyclones year-round, with a minimum
in February and March and a peak in early September. In the North Indian
basin, storms are most common from April to December, with peaks in May
and November.[15] In the Southern Hemisphere, the tropical cyclone season
runs from 1 November until the end of April with peaks in mid-February to
early March.[15][17]

Thunderstorm season in the United States and Canada runs in the spring
through summer. These storms can produce hail, strong winds and tornadoes,
usually during the afternoon and evening.

Holidays Image of Hurricane Lester from

late August 1992.

School breaks
Schools and universities typically have a summer break to take advantage of the warmer weather and longer days. In
almost all countries, children are out of school during this time of year for summer break, although dates vary. In the
United States, public schools usually end in late May in Memorial Day weekend, while colleges finish in early May,
although some schools get out on the last or second last Thursday in May. In England and Wales, school ends in mid-

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July and resumes again in early September; in Scotland, the summer holiday begins in late June and ends in mid- to
late-August. Similarly, in Canada the summer holiday starts on the last or second-last Friday in June and ends in late
August or on the first Monday of September, with the exception of when that date falls before Labour Day, in which
case, ends on the second Monday of the month. In Russia the summer holiday begins at the end of May and ends on
August 31.

In the Southern Hemisphere, school summer holiday dates include the major holidays of Christmas and New Year's
Day. School summer holidays in Australia, New Zealand and South Africa begin in early December and end in early
February, with dates varying between states. In South Africa, the new school-year usually starts during the 2nd week of
January, thus aligning the academic year with the Calendar year. In India, school ends in late April and resumes in
early or mid June. In Cameroon and Nigeria, schools usually finish for summer vacation in mid-July, and resume in
the later weeks of September or the first week of October.

Public holidays
A wide range of public holidays fall during summer, including:

Memorial Day (United States) or Victoria Day (Canada) through Labor Day
Independence Day (Jordan) (25 May)
Bank holidays in the United Kingdom and Ireland
Festa della Repubblica, Italian national day and republic day (2 June)
National Day of Sweden (6 June) and Midsummer, sometimes referred to as the "alternative National Day"
Canada Day (1 July)
Independence Day (United States) (4 July)
Bastille Day, National Day of France (14 July)
Belgian National Day (21 July)
Ólavsøka, Faroe Islands (29 July)
Swiss National Day (1 August)
Independence Day (Pakistan) (14 August)
Independence Day (India) (15 August)
Australia Day (26 January)

Activities
People generally take advantage of the high temperatures by spending more
time outdoors during summer. Activities such as travelling to the beach and
picnics occur during the summer months. Sports such as soccer, basketball,
football, volleyball, skateboarding, baseball, softball, cricket, tennis and golf
are played. Water sports also occur. These include water skiing,
wakeboarding, swimming, surfing, tubing and water polo. The modern
Olympics have been held during the summer months every four years since
1896. The 2000 Summer Olympics, in Sydney, however, were held during
Hotels and tourists along the
the Australian Spring.
Atlantic Ocean shoreline in Myrtle
Summer is normally a low point in television viewing, and television Beach, South Carolina in summer
schedules generally reflect this by not scheduling new episodes of their
most popular shows between the end of May sweeps and the beginning of
the television season in September, instead scheduling low-cost reality television shows and burning off commitments
to already-cancelled series. There is an exception to this with children's television. Many television shows made for
children and are popular with children are released during the summer months, especially on children's cable channels
such as the Disney Channel in the United States, as children are off school. Disney Channel, for example, ends its
preschool programming earlier in the day for older school age children in the summer months while it reverts to the

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original scheduling as the new school year begins. Conversely, the music and film industries generally experience
higher returns during the summer than other times of the year and market their summer hits accordingly. Summer is
most popular for animated movies to be released theatrically in movie theaters.

With most school-age children and college students (except those attending summer school and summer camp) on
summer vacation during the summer months, especially in the United States, travel and vacationing traditionally
peaks during the summer, with the volume of travel in a typical summer weekend rivaled only by Thanksgiving.
Teenagers and college students often take summer jobs in industries that cater to recreation. Business activity for the
recreation, tourism, restaurant, and retail industries peak during the summer months as well as the holiday season.

Children cycling during Barefoot skiing Fig trees bear fruit when Using a personal
summer summer is near cooling device in
summer

See also
Summer Olympic Games

References
1. Ball, Sir Robert S (1900). Elements of Astronomy (https://books.google.com/books?id=sNSHRDu98k0C&pg=PA5
2). London: The MacMillan Company. p. 52. ISBN 978-1-4400-5323-8.
2. Heck, Andre (2006). Organizations and strategies in Astronomy (https://books.google.com/books?id=YSsaxkeixH
0C&pg=PA14). 7. Springer. p. 14. ISBN 978-1-4020-5300-9.
3. Cecil Adams (11 March 1983). "Is it true summer in Ireland starts May 1?" (http://www.straightdope.com/columns/r
ead/161/is-it-true-summer-in-ireland-starts-may-1). The Straight Dope. Archived (https://web.archive.org/web/2011
0830161742/http://www.straightdope.com/columns/read/161/is-it-true-summer-in-ireland-starts-may-1) from the
original on 30 August 2011. Retrieved 27 September 2011.
4. Meteorological Glossary. London: HMSO. p. 260. ISBN 978-0-11-400363-0.
5. "Professor Paul Hardaker answers questions on meteorological forecasting" (http://www.rgs.org/OurWork/Schools/
School+Members+Area/Ask+the+experts/Meteorological+forecasting.htm) Archived (https://web.archive.org/web/
20170202023116/http://www.rgs.org/OurWork/Schools/School+Members+Area/Ask+the+experts/Meteorological+f
orecasting.htm) 2 February 2017 at the Wayback Machine. Royal Geographical Society.
6. Driscol, D. M.; Rice, P. B.; Fong, J. M. Y. (1994). "Spatial variation of climatic aspects of temperature: Interdiurnal
variability and lag". International Journal of Climatology. 14 (9): 1001. Bibcode:1994IJCli..14.1001D (http://adsabs.
harvard.edu/abs/1994IJCli..14.1001D). doi:10.1002/joc.3370140905 (https://doi.org/10.1002%2Fjoc.3370140905).
7. "First day of summer worth celebrating" (http://www.jsonline.com/sports/outdoors/48297387.html). JSOnline.
Archived (https://web.archive.org/web/20110713123543/http://www.jsonline.com/sports/outdoors/48297387.html)
from the original on 13 July 2011. Retrieved 27 September 2011.
8. "Father's Day is first day of summer" (https://web.archive.org/web/20110917013640/http://www.fox11online.com/d
pp/weather/gdw_wluk_green_bay_fathers_day_first_day_summer_200906190659_rev1). Fox11online.com. 19
June 2009. Archived from the original (http://www.fox11online.com/dpp/weather/gdw_wluk_green_bay_fathers_da
y_first_day_summer_200906190659_rev1) on 17 September 2011. Retrieved 27 September 2011.
9. "Summer Solstice - from Eric Weisstein's World of Astronomy" (http://scienceworld.wolfram.com/astronomy/Summ
erSolstice.html). Scienceworld.wolfram.com. Retrieved 27 September 2011.

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10. Gabler, Robert E.; Petersen, James F.; Trapasso, L. Michael; Sack, Dorothy (2008). Physical Geography.
Belmont, California: Cengage Learning. p. 107. ISBN 0495555061.
11. Williams, Jack (22 February 2005). "Answers: When do the seasons begin" (https://www.usatoday.com/weather/re
sources/askjack/2003-12-21-answers-seasons_x.htm). Usatoday.Com. Archived (https://web.archive.org/web/201
20127202256/http://www.usatoday.com/weather/resources/askjack/2003-12-21-answers-seasons_x.htm) from the
original on 27 January 2012. Retrieved 27 September 2011.
12. "Bureau of Meteorology - Home Page" (http://www.bom.gov.au/). Bom.gov.au. 11 March 2011. Archived (https://we
b.archive.org/web/20170912140134/http://www.bom.gov.au/) from the original on 12 September 2017. Retrieved
27 September 2011.
13. Charles Darwin University (2009). Characteristics of tropical savannas. (http://learnline.cdu.edu.au/units/sbi507/m
odule2/savanna.html) Archived (https://web.archive.org/web/20090217001357/http://learnline.cdu.edu.au/units/sbi
507/module2/savanna.html) 17 February 2009 at the Wayback Machine Charles Darwin University. Retrieved on
27 December 2008.
14. Glossary of Meteorology (2009). Monsoon. (http://amsglossary.allenpress.com/glossary/search?p=1&query=mons
oon&submit=Search) Archived (https://web.archive.org/web/20080322122025/http://amsglossary.allenpress.com/g
lossary/search?p=1&query=monsoon&submit=Search) 22 March 2008 at the Wayback Machine American
Meteorological Society. Retrieved 16 January 2009.
15. Atlantic Oceanographic and Meteorological Laboratory, Hurricane Research Division. "Frequently Asked
Questions: When is hurricane season?" (http://www.aoml.noaa.gov/hrd/tcfaq/G1.html). National Oceanic and
Atmospheric Administration. Archived (https://web.archive.org/web/20060718065833/http://www.aoml.noaa.gov/hr
d/tcfaq/G1.html) from the original on 18 July 2006. Retrieved 25 July 2014.
16. McAdie, Colin (10 May 2007). "Tropical Cyclone Climatology" (http://www.nhc.noaa.gov/pastprofile.shtml).
National Hurricane Center. Archived (https://web.archive.org/web/20100506010751/http://www.nhc.noaa.gov/past
profile.shtml) from the original on 6 May 2010. Retrieved 9 June 2007.
17. "Tropical Cyclone Operational Plan for the Southeastern Indian Ocean and the South Pacific Oceans" (http://www.
wmo.int/pages/prog/www/tcp/documents/TCP24-English2008.pdf) (PDF). World Meteorological Organization. 10
March 2009. Archived (https://www.webcitation.org/5gwsPSRNj?url=http://www.wmo.int/pages/prog/www/tcp/docu
ments/TCP24-English2008.pdf) (PDF) from the original on 22 May 2009. Retrieved 6 May 2009.

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