Alderney, Guernsey Climate

Weather: 8.3°C/46.94°F, Wind SW at 4.69 km/h, 69% Humidity, 0.49% Chance of rain

Guernsey
(Photo by Enrapture Captivating Media on Unsplash)
Contents

Alderney Climate Summary

Located at an elevation of 72.28 meters (237.14 feet) above sea level, Alderney has a Marine west coast, warm summer climate (Classification: Cfb). The city’s yearly temperature is 12.38ºC (54.28ºF) and it is -0.12% lower than Guernsey’s averages. Alderney typically receives about 47.77 millimeters (1.88 inches) of precipitation and has 122.64 rainy days (33.6% of the time) annually.

CountryGuernsey
Longitude-2.1973557
Latitude49.715004
Attitude/Elevation72.28m (237.14ft)
Local timeFriday 04:40
Annual high temperature12.97ºC (55.35ºF)
Annual low temperature10.87ºC (51.57ºF)
Average annual precip.47.77mm (1.88in)
Warmest monthAugust (17.53ºC / 63.55ºF)
Coldest MonthFebruary (6.88ºC / 44.38ºF)
Wettest MonthDecember (84.75mm / 3.34in)
Driest MonthJuly (24.99mm / 0.98in)
Number of days with rainfall (≥ 1.0 mm)122.64 days (33.6%)
Days with no rain242.36 days (66.4%)
Humidity80.3%

Climate Alderney: Monthly Averages

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)13.0(55.4)13.0(55.4)14.0(57.2)16.0(60.8)17.0(62.6)20.0(68.0)22.0(71.6)22.0(71.6)20.0(68.0)20.0(68.0)17.0(62.6)14.0(57.2)22.0(71.6)
Average high °C (°F)9.43(48.97)8.82(47.88)9.38(48.88)10.79(51.42)12.58(54.64)14.87(58.77)16.84(62.31)17.53(63.55)16.9(62.42)15.13(59.23)12.6(54.68)10.81(51.46)12.97(55.35)
Daily mean °C (°F)8.8(47.84)8.2(46.76)8.76(47.77)10.11(50.2)11.95(53.51)14.32(57.78)16.3(61.34)16.96(62.53)16.28(61.3)14.55(58.19)12.04(53.67)10.24(50.43)12.38(54.28)
Average low °C (°F)7.13(44.83)6.88(44.38)7.3(45.14)8.61(47.5)10.35(50.63)12.85(55.13)14.88(58.78)15.67(60.21)14.68(58.42)12.96(55.33)10.53(50.95)8.63(47.53)10.87(51.57)
Record low °C (°F)-1.0(30.2)-1.0(30.2)-2.0(28.4)-2.0(28.4)-1.0(30.2)3.0(37.4)5.0(41.0)0.0(0)3.0(37.4)2.0(35.6)-2.0(28.4)-2.0(28.4)-2.0(28.4)
Average precipitation mm (inches)62.7(2.47)51.37(2.02)39.72(1.56)26.65(1.05)27.35(1.08)29.54(1.16)24.99(0.98)43.46(1.71)38.77(1.53)72.14(2.84)71.77(2.83)84.75(3.34)47.77(1.88)
Average precipitation days (≥ 1.0 mm)13.7311.459.646.917.095.646.919.188.0913.0915.2715.6410.22
Average relative humidity (%)78.2678.2279.7780.082.4184.784.3882.5379.6378.6377.6277.4280.3
Mean monthly sunshine hours4.97.819.210.9413.5715.3714.9511.7610.078.335.994.669.8

Climate Graph

The chart below shows the mean monthly temperature and precipitation of Alderney in recent years.

Alderney

Alderney Temperature by Month

August
16.96°C | 62.53°F
July
16.3°C | 61.34°F
September
16.28°C | 61.3°F
October
14.55°C | 58.19°F
June
14.32°C | 57.78°F
November
12.04°C | 53.67°F
May
11.95°C | 53.51°F
December
10.24°C | 50.43°F
April
10.11°C | 50.2°F
January
8.8°C | 47.84°F
March
8.76°C | 47.77°F
February
8.2°C | 46.76°F

Historical Data

Summary
  • 2010
  • 2011
  • 2012
  • 2013
  • 2014
  • 2015
  • 2016
  • 2017
  • 2018
  • 2019
  • 2020
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature14.0°C (57.2°F)10.39°C (50.7°F)6.0°C (42.8°F)
Avg Temperature13.0°C (55.4°F)9.45°C (49.01°F)6.0°C (42.8°F)
Min Temperature12.0°C (53.6°F)4.71°C (40.48°F)-2.0°C (28.4°F)
Dew PointMaxAverageMin
Dew Point12.0°C (53.6°F)5.77°C (42.39°F)1.0°C (33.8°F)
PrecipitationMaxAverageMinSum
Precipitation37.6mm | 1.48in9.01mm | 0.35in0.0mm | 0in279.2mm | 10.99in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind55.0kmh | 34.18mph37.45kmh | 23.27mph13.0kmh | 8.08mph
Gust Wind81.0kmh | 50.33mph51.32kmh | 31.89mph17.0kmh | 10.56mph
Sea Level PressureMaxAverageMin
Sea Level Pressure37.6mb9.01mb0.0mb
Alderney

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
December° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2020-12-019 | 48.25 | 41.07231 | 19.2630.3 | 10263.2 | 0.13
2020-12-029 | 48.24 | 39.26920 | 12.4330.12 | 10200.9 | 0.04
2020-12-038 | 46.45 | 41.08026 | 16.1629.41 | 99627.8 | 1.09
2020-12-047 | 44.62 | 35.66734 | 21.1328.97 | 9816.9 | 0.27
2020-12-056 | 42.85 | 41.08546 | 28.5829.09 | 98518.9 | 0.74
2020-12-067 | 44.64 | 39.27739 | 24.2329.53 | 10004.1 | 0.16
2020-12-078 | 46.42 | 35.66813 | 8.0829.56 | 10011.5 | 0.06
2020-12-088 | 46.43 | 37.46824 | 14.9129.65 | 10041.2 | 0.05
2020-12-099 | 48.24 | 39.27131 | 19.2629.74 | 10071.9 | 0.07
2020-12-1012 | 53.69 | 48.28533 | 20.5129.41 | 99619.2 | 0.76
2020-12-1111 | 51.89 | 48.28032 | 19.8829.21 | 9893.7 | 0.15
2020-12-1210 | 50.06 | 42.87242 | 26.129.56 | 10011.4 | 0.06
2020-12-1312 | 53.68 | 46.48140 | 24.8529.65 | 10042.2 | 0.09
2020-12-1412 | 53.68 | 46.47744 | 27.3429.53 | 10002.9 | 0.11
2020-12-1511 | 51.87 | 44.67336 | 22.3729.68 | 10053.5 | 0.14
2020-12-1610 | 50.08 | 46.48044 | 27.3429.71 | 100615.3 | 0.6
2020-12-1711 | 51.88 | 46.47538 | 23.6129.97 | 10152.8 | 0.11
2020-12-1813 | 55.410 | 50.08555 | 34.1829.83 | 10100.9 | 0.04
2020-12-1912 | 53.68 | 46.47748 | 29.8329.71 | 10064.8 | 0.19
2020-12-2011 | 51.86 | 42.86939 | 24.2329.97 | 10155.7 | 0.22
2020-12-2113 | 55.411 | 51.89250 | 31.0729.8 | 100937.6 | 1.48
2020-12-2212 | 53.612 | 53.69336 | 22.3729.88 | 101222.8 | 0.9
2020-12-2312 | 53.610 | 50.08741 | 25.4829.62 | 100312.3 | 0.48
2020-12-247 | 44.63 | 37.47149 | 30.4530.15 | 10211.2 | 0.05
2020-12-256 | 42.81 | 33.86931 | 19.2630.5 | 10330.0 | 0.0
2020-12-2610 | 50.06 | 42.87639 | 24.2330.21 | 10232.0 | 0.08
2020-12-279 | 48.25 | 41.07352 | 32.3129.03 | 98329.0 | 1.14
2020-12-288 | 46.43 | 37.47254 | 33.5528.7 | 97216.1 | 0.63
2020-12-297 | 44.63 | 37.47228 | 17.429.21 | 9894.3 | 0.17
2020-12-307 | 44.63 | 37.47332 | 19.8829.65 | 100415.7 | 0.62
2020-12-316 | 42.81 | 33.87134 | 21.1329.62 | 10039.4 | 0.37

Alderney 10 Year Historical Weather Data

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