Longyearbyen

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Longyearbyen town centre.

Longyearbyen is the largest settlement and the administrative centre of Svalbard, Norway. As of 2013, the town had a population of 2,043.[1][2]

Climate[change | change source]

Because Longyearbyen is quite far north, it has very long daylight hours during the summer, and very short daylight hours in the winter. It has midnight sun between 19 April and 25 August. Longyearbyen has polar night between 27 October and 15 February. It is milder than other places at the same latitude, due to warming from the sea. This means that surprisingly high temperatures can occur. For example, Longyearbyen reached almost into double figures Celsius on 30 January 1984. The warmest recorded temperature was as high as 25 °C (77 °F) on 17 July 1977. The coldest temperature was a very cold −46.3 °C (−51.3 °F) on 4 March 1986. Longyearbyen is badly affected by global warming, due to its Arctic position.[3][4] On 1 August 2015, a record August temperature of 23.6 °C (74.5 °F) was recorded.[5]

Climate data for Svalbard Airport Longyearbyen 1991-2020 (28 m, extremes 1975-2020)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 7.7
(45.9)
7
(45)
6.3
(43.3)
7.5
(45.5)
10.6
(51.1)
15.7
(60.3)
21.7
(71.1)
18.1
(64.6)
15.2
(59.4)
10.1
(50.2)
9.2
(48.6)
8.7
(47.7)
21.7
(71.1)
Daily mean °C (°F) −10.9
(12.4)
−11.6
(11.1)
−12
(10)
−8.8
(16.2)
−2.2
(28.0)
3.6
(38.5)
7
(45)
6
(43)
2
(36)
−3.8
(25.2)
−6.4
(20.5)
−9.2
(15.4)
−3.9
(25.1)
Record low °C (°F) −38.8
(−37.8)
−43.7
(−46.7)
−46.3
(−51.3)
−39.1
(−38.4)
−21.7
(−7.1)
−8.4
(16.9)
−0.7
(30.7)
−3.9
(25.0)
−12.6
(9.3)
−20.8
(−5.4)
−33.2
(−27.8)
−35.6
(−32.1)
−46.3
(−51.3)
Average precipitation mm (inches) 21
(0.8)
17
(0.7)
16
(0.6)
9
(0.4)
8
(0.3)
8
(0.3)
20
(0.8)
23
(0.9)
26
(1.0)
18
(0.7)
22
(0.9)
24
(0.9)
212
(8.3)
Source: Norwegian Meteorological Institute[6]


Climate data for Longyearbyen (1961–1990)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 9.7
(49.5)
7.0
(44.6)
6.3
(43.3)
7.5
(45.5)
10.6
(51.1)
15.7
(60.3)
21.7
(71.1)
18.1
(64.6)
15.2
(59.4)
8.9
(48.0)
7.5
(45.5)
8.7
(47.7)
21.7
(71.1)
Average high °C (°F) −13.0
(8.6)
−13.0
(8.6)
−13.0
(8.6)
−9.0
(15.8)
−3.0
(26.6)
3.0
(37.4)
7.0
(44.6)
6.0
(42.8)
1.0
(33.8)
−4.0
(24.8)
−8.0
(17.6)
−11.0
(12.2)
−4.7
(23.5)
Daily mean °C (°F) −16.5
(2.3)
−17.0
(1.4)
−16.5
(2.3)
−12.5
(9.5)
−5.0
(23.0)
1.0
(33.8)
5.0
(41.0)
4.0
(39.2)
−1.0
(30.2)
−6.5
(20.3)
−11.0
(12.2)
−14.5
(5.9)
−7.5
(18.4)
Average low °C (°F) −20.0
(−4.0)
−21.0
(−5.8)
−20.0
(−4.0)
−16.0
(3.2)
−7.0
(19.4)
−1.0
(30.2)
3.0
(37.4)
2.0
(35.6)
−3.0
(26.6)
−9.0
(15.8)
−14.0
(6.8)
−18.0
(−0.4)
−10.3
(13.4)
Record low °C (°F) −38.8
(−37.8)
−43.7
(−46.7)
−46.3
(−51.3)
−39.1
(−38.4)
−21.7
(−7.1)
−8.4
(16.9)
0.2
(32.4)
−3.9
(25.0)
−12.6
(9.3)
−20.8
(−5.4)
−33.2
(−27.8)
−35.6
(−32.1)
−46.3
(−51.3)
Average precipitation mm (inches) 22.0
(0.87)
28.0
(1.10)
29.0
(1.14)
16.0
(0.63)
13.0
(0.51)
18.0
(0.71)
24.0
(0.94)
30.0
(1.18)
25.0
(0.98)
19.0
(0.75)
22.0
(0.87)
25.0
(0.98)
271
(10.66)
Average rainy days (≥ 1 mm) 2 2 2 3 4 13 17 18 14 5 3 3 86
Average snowy days (≥ 1 cm) 21 17 19 17 16 7 1 2 11 21 22 22 176
Mean monthly sunshine hours 0.0 0.0 77.5 228.0 254.2 165.0 155.0 133.3 75.0 12.4 0.0 0.0 1,102
Percent possible sunshine 0.0 0.0 22.1 36.4 34.2 22.9 20.8 18.7 17.4 6.2 0.0 0.0 25
Average ultraviolet index 0 0 0 1 2 2 2 1 1 0 0 0 0.75
Source 1: nordicvisitor.com[7]
Source 2: UNIS (extremes only)[8][9] (sun only)[10] and Weather Atlas (UV index)[11][12]

References[change | change source]

  1. "Spitzbergen (Svalbard) Informationen rund um die arktische Inselgruppe". Spitzbergen - Svalbard.
  2. Planet, Lonely. "Longyearbyen travel - Svalbard, Norway". Lonely Planet.
  3. "Sunrise and sunset times in Longyearbyen, February 2015". www.timeanddate.com.
  4. "HugeDomains.com - VoodooSkies.com is for sale (Voodoo Skies)". www.hugedomains.com. Cite uses generic title (help)
  5. "Vei 238 Weather - Personal Weather Station: ILONGYEA2 by Wunderground.com - Weather Underground". www.wunderground.com.
  6. http://sharki.oslo.dnmi.no/portal/page?_pageid=73,39035,73_39080&_dad=portal&_schema=PORTAL. Missing or empty |title= (help)
  7. "Climate and daylight in Svalbard (Longyearbyen)". NordicVisitor. Retrieved 18 May 2011.
  8. Sjöblom, Anna. "Weather Conditions on Svalbard" (PDF). Archived from the original (PDF) on 9 November 2011. Retrieved June 13, 2015.
  9. http://www.myweather2.com/City-Town/Norway/Longyearbyen/climate-profile.aspx?month=7
  10. http://www.svalbard.climatemps.com/sunlight.php
  11. d.o.o, Yu Media Group. "Longyearbyen, Svalbard and Jan Mayen - Detailed climate information and monthly weather forecast". Weather Atlas. Retrieved 2019-08-30.
  12. https://www.lifeinnorway.net/hottest-ever-day-recorded-in-arctic-svalbard/