Lerwick monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Lerwick

Lerwick average temperature chart (Celsius) Lerwick average temperature chart (Fahrenheit)
Average monthly temperatures in Lerwick (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.3 5.2 6 7.8 10.1 12.6 13.8 14.2 12.4 10.3 7.3 6
°F 41.6 41.3 42.9 46.1 50.2 54.7 56.9 57.5 54.4 50.6 45.1 42.8

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Lerwick monthly rainfall chart (mm) Lerwick monthly rainfall chart (inches)
Average monthly rainfall in Lerwick (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 129 89 110 70 60 59 62 77 115 131 140 135
inches 5.1 3.5 4.3 2.8 2.4 2.3 2.4 3 4.5 5.1 5.5 5.3
Rainy days 26 20 23 19 17 16 18 18 22 24 25 26

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Lerwick

Lerwick average daily sunshine chart
Average daily sunshine Lerwick
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 0.9 2.2 3.1 4.9 5.4 6 4.7 4.6 3.5 2.3 1.3 0.6

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Lerwick average minimum / maximum temperatures (Celsius) Lerwick average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Lerwick (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 1.3 1.2 1.7 2.8 5.3 7.6 9.2 9.5 8.1 6.4 3.2 1.9
Max °C 5.4 5.3 6.2 7.9 10.3 12.8 14 14.3 12.5 10.4 7.4 6.1
Min °F 34.3 34.2 35 37 41.5 45.7 48.5 49.1 46.5 43.5 37.8 35.4
Max °F 38.1 37.8 39 41.7 46 50.3 52.8 53.4 50.5 47.1 41.5 39.2

Sea temperature

The graph below shows the average sea temperature.

Lerwick average sea temperature chart (Celsius) Lerwick average sea temperature chart (Fahrenheit)
Average sea temperature around Lerwick in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.5 8.1 8 8.2 9 10.5 12.1 12.9 12.1 10.9 9.9 9.1
°F 47.3 46.6 46.5 46.8 48.2 50.9 53.7 55.2 53.8 51.6 49.7 48.3

Wind speed

The graph below shows the average wind speed.

Lerwick average winspeed by month (km/h) Lerwick average winspeed by month (mph)
Average wind speed in Lerwick (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 31 28 29 24 22 21 21 19 25 27 28 30
mph 19 17 18 15 14 13 13 12 15 17 17 19

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Lerwick relative humidity averages
Average relative humidity in Lerwick
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
89% 87% 87% 85% 86% 87% 89% 90% 90% 90% 89% 89%

Other monthly averages

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Lerwick weather stats

Lerwick weather statistics
Hottest month: August 14.2°C 57.6°F
Driest month: June 59mm 2.3ins
Sunniest month: April 4.9hrs
Coldest month: February 5.2°C 41.4°F
Wettest month: November 140mm 5.5ins
Warmest sea: August 12.9°C 55.2°F
Map showing location of Lerwick (60.15453, -1.14941)

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