Herm, Guernsey Climate

Weather: 7.65°C/45.77°F, Wind SW at 2.06 km/h, 87% Humidity, 0% Chance of rain

Guernsey
(Photo by Enrapture Captivating Media on Unsplash)
Contents

Herm Climate Summary

Located at an elevation of 6.51 meters (21.36 feet) above sea level, Herm has a Marine west coast, warm summer climate (Classification: Cfb). The city’s yearly temperature is 12.51ºC (54.52ºF) and it is 0.01% higher than Guernsey’s averages. Herm typically receives about 47.73 millimeters (1.88 inches) of precipitation and has 122.99 rainy days (33.7% of the time) annually.

CountryGuernsey
Longitude-2.5342057
Latitude49.4525823
Attitude/Elevation6.51m (21.36ft)
Local timeSaturday 00:55
Annual high temperature13.14ºC (55.65ºF)
Annual low temperature10.9ºC (51.62ºF)
Average annual precip.47.73mm (1.88in)
Warmest monthAugust (17.54ºC / 63.57ºF)
Coldest MonthFebruary (6.86ºC / 44.35ºF)
Wettest MonthDecember (79.35mm / 3.12in)
Driest MonthJuly (23.95mm / 0.94in)
Number of days with rainfall (≥ 1.0 mm)122.99 days (33.7%)
Days with no rain242.01 days (66.3%)
Humidity79.99%

Climate Herm: Monthly Averages

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)13.0(55.4)13.0(55.4)14.0(57.2)17.0(62.6)18.0(64.4)21.0(69.8)22.0(71.6)22.0(71.6)21.0(69.8)20.0(68.0)17.0(62.6)15.0(59.0)22.0(71.6)
Average high °C (°F)9.74(49.53)9.07(48.33)9.61(49.3)10.96(51.73)12.65(54.77)14.91(58.84)16.91(62.44)17.54(63.57)17.0(62.6)15.28(59.5)12.87(55.17)11.12(52.02)13.14(55.65)
Daily mean °C (°F)9.08(48.34)8.4(47.12)8.94(48.09)10.2(50.36)12.03(53.65)14.35(57.83)16.36(61.45)16.99(62.58)16.35(61.43)14.65(58.37)12.23(54.01)10.5(50.9)12.51(54.52)
Average low °C (°F)7.3(45.14)6.86(44.35)7.33(45.19)8.66(47.59)10.45(50.81)12.76(54.97)14.84(58.71)15.51(59.92)14.72(58.5)13.03(55.45)10.55(50.99)8.83(47.89)10.9(51.62)
Record low °C (°F)-3.0(26.6)-2.0(28.4)-3.0(26.6)-2.0(28.4)-1.0(30.2)2.0(35.6)6.0(42.8)0.0(0)4.0(39.2)3.0(37.4)-1.0(30.2)-2.0(28.4)-3.0(26.6)
Average precipitation mm (inches)64.63(2.54)51.71(2.04)39.23(1.54)30.5(1.2)27.33(1.08)32.63(1.28)23.95(0.94)43.05(1.69)37.09(1.46)69.09(2.72)74.23(2.92)79.35(3.12)47.73(1.88)
Average precipitation days (≥ 1.0 mm)14.3612.279.457.456.185.916.738.827.6413.0916.1814.9110.25
Average relative humidity (%)77.7777.6879.3779.7682.3284.6384.1882.1579.4978.3877.1976.9679.99
Mean monthly sunshine hours5.566.089.1412.4613.0613.1313.3212.7711.116.615.855.379.54

Climate Graph

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

Herm

Herm Temperature by Month

August
16.99°C | 62.58°F
July
16.36°C | 61.45°F
September
16.35°C | 61.43°F
October
14.65°C | 58.37°F
June
14.35°C | 57.83°F
November
12.23°C | 54.01°F
May
12.03°C | 53.65°F
December
10.5°C | 50.9°F
April
10.2°C | 50.36°F
January
9.08°C | 48.34°F
March
8.94°C | 48.09°F
February
8.4°C | 47.12°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 Temperature20.0°C (68.0°F)18.13°C (64.63°F)16.0°C (60.8°F)
Avg Temperature20.0°C (68.0°F)17.65°C (63.77°F)15.0°C (59.0°F)
Min Temperature19.0°C (66.2°F)17.06°C (62.71°F)15.0°C (59.0°F)
Dew PointMaxAverageMin
Dew Point17.0°C (62.6°F)14.23°C (57.61°F)9.0°C (48.2°F)
PrecipitationMaxAverageMinSum
Precipitation5.1mm | 0.2in0.67mm | 0.03in0.0mm | 0in20.9mm | 0.82in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind37.0kmh | 22.99mph20.81kmh | 12.93mph7.0kmh | 4.35mph
Gust Wind52.0kmh | 32.31mph30.29kmh | 18.82mph10.0kmh | 6.21mph
Sea Level PressureMaxAverageMin
Sea Level Pressure5.1mb0.67mb0.0mb
Herm

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
August° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2018-08-0117 | 62.613 | 55.4759 | 5.5930.18 | 10220.0 | 0.0
2018-08-0218 | 64.413 | 55.4739 | 5.5930.24 | 10240.0 | 0.0
2018-08-0319 | 66.216 | 60.88114 | 8.730.21 | 10230.0 | 0.0
2018-08-0419 | 66.217 | 62.68819 | 11.8130.21 | 10230.0 | 0.0
2018-08-0520 | 68.016 | 60.88016 | 9.9430.18 | 10220.0 | 0.0
2018-08-0619 | 66.216 | 60.88314 | 8.729.97 | 10150.0 | 0.0
2018-08-0718 | 64.416 | 60.88421 | 13.0529.83 | 10105.1 | 0.2
2018-08-0818 | 64.413 | 55.47321 | 13.0529.91 | 10130.4 | 0.02
2018-08-0917 | 62.612 | 53.67523 | 14.2930.0 | 10165.1 | 0.2
2018-08-1017 | 62.613 | 55.47737 | 22.9930.15 | 10210.1 | 0.0
2018-08-1118 | 64.415 | 59.08419 | 11.8130.18 | 10220.4 | 0.02
2018-08-1218 | 64.415 | 59.08529 | 18.0229.85 | 10112.3 | 0.09
2018-08-1318 | 64.415 | 59.08627 | 16.7829.85 | 10110.1 | 0.0
2018-08-1418 | 64.416 | 60.88923 | 14.2930.09 | 10190.0 | 0.0
2018-08-1518 | 64.416 | 60.88921 | 13.0530.12 | 10200.1 | 0.0
2018-08-1617 | 62.615 | 59.08327 | 16.7830.03 | 10170.5 | 0.02
2018-08-1717 | 62.613 | 55.47523 | 14.2930.18 | 10220.1 | 0.0
2018-08-1818 | 64.415 | 59.08423 | 14.2930.24 | 10240.2 | 0.01
2018-08-1918 | 64.416 | 60.89029 | 18.0230.18 | 10220.1 | 0.0
2018-08-2018 | 64.417 | 62.69616 | 9.9430.18 | 10220.1 | 0.0
2018-08-2118 | 64.417 | 62.69211 | 6.8430.15 | 10210.1 | 0.0
2018-08-2218 | 64.416 | 60.88812 | 7.4630.09 | 10190.0 | 0.0
2018-08-2318 | 64.416 | 60.88827 | 16.7830.0 | 10160.2 | 0.01
2018-08-2417 | 62.611 | 51.87033 | 20.5130.06 | 10181.8 | 0.07
2018-08-2515 | 59.09 | 48.26619 | 11.8130.03 | 10170.1 | 0.0
2018-08-2618 | 64.413 | 55.48036 | 22.3729.88 | 10121.6 | 0.06
2018-08-2717 | 62.613 | 55.47727 | 16.7829.97 | 10150.1 | 0.0
2018-08-2816 | 60.812 | 53.6757 | 4.3530.03 | 10172.2 | 0.09
2018-08-2917 | 62.613 | 55.47824 | 14.9130.06 | 10180.0 | 0.0
2018-08-3016 | 60.811 | 51.87417 | 10.5630.21 | 10230.2 | 0.01
2018-08-3117 | 62.612 | 53.67312 | 7.4630.21 | 10230.0 | 0.0

Herm 10 Year Historical Weather Data

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