Holyhead monthly weather averages

Contents

Average daytime temperature

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

Holyhead average temperature chart (Celsius) Holyhead average temperature chart (Fahrenheit)
Average monthly temperatures in Holyhead (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.6 7.5 9.1 11.3 14.2 16.8 18.3 18.4 16.6 14.2 10.5 8.6
°F 45.8 45.6 48.3 52.3 57.6 62.2 65 65.2 61.8 57.5 50.9 47.5

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.

Holyhead monthly rainfall chart (mm) Holyhead monthly rainfall chart (inches)
Average monthly rainfall in Holyhead (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 86 59 67 54 51 55 55 77 77 95 102 98
inches 3.4 2.3 2.6 2.1 2 2.1 2.1 3 3 3.7 4 3.8
Rainy days 21 16 18 15 15 14 13 16 16 20 20 20

Average annual rainfall in Holyhead: 922.767mm (363.3 inches)

Average daily sunshine

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

Holyhead average daily sunshine chart
Average daily sunshine Holyhead
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.1 3.3 4.2 6.3 7.7 7.7 6.7 6.5 5 3.7 2.5 1.9

Day / night temperatures

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

Holyhead average minimum / maximum temperatures (Celsius) Holyhead average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Holyhead (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 3.3 2.6 3.8 5.2 7.6 10.3 12.1 12.2 10.9 8.9 5.6 4.1
Max °C 7.8 7.7 9.2 11.5 14.4 17 18.5 18.6 16.7 14.3 10.6 8.8
Min °F 37.9 36.6 38.8 41.3 45.7 50.5 53.8 54 51.6 48 42.1 39.3
Max °F 41.9 41.2 43.7 46.9 51.8 56.5 59.5 59.7 56.8 52.9 46.6 43.5

Sea temperature

The graph below shows the average sea temperature.

Holyhead average sea temperature chart (Celsius) Holyhead average sea temperature chart (Fahrenheit)
Average sea temperature around Holyhead in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.4 7.4 7.3 8.3 10.2 12.5 14.5 15.3 15.1 13.9 12.1 10.2
°F 47.2 45.3 45.2 46.9 50.4 54.6 58 59.6 59.2 57.1 53.9 50.4

Wind speed

The graph below shows the average wind speed.

Holyhead average winspeed by month (km/h) Holyhead average winspeed by month (mph)
Average wind speed in Holyhead (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 27 25 25 20 19 18 18 19 22 23 25 26
mph 17 15 15 13 12 11 11 12 14 15 16 16

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.

Holyhead relative humidity averages
Average relative humidity in Holyhead
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
86% 84% 83% 81% 80% 81% 82% 84% 85% 85% 85% 87%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Holyhead weather stats

Holyhead weather statistics
Hottest month: August 18.4°C 65.1°F
Driest month: May 51mm 2ins
Sunniest month: May 7.7hrs
Coldest month: February 7.5°C 45.5°F
Wettest month: November 102mm 4ins
Warmest sea: August 15.3°C 59.5°F
Map showing location of Holyhead (53.30621, -4.63211) Holyhead map pin © Google

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