Portlaoise monthly weather averages

Average daytime temperature

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

Portlaoise average temperature chart (Celsius) Portlaoise average temperature chart (Fahrenheit)
Average monthly temperatures in Portlaoise (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7 7.3 9.3 11.7 14.4 17.5 19.1 18.7 16.4 13.2 9.3 7.7
°F 44.6 45.1 48.8 53.1 58 63.5 66.4 65.6 61.6 55.8 48.7 45.9

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.

Portlaoise monthly rainfall chart (mm) Portlaoise monthly rainfall chart (inches)
Average monthly rainfall in Portlaoise (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 87 63 64 57 67 59 63 79 85 87 81 93
inches 3.4 2.5 2.5 2.3 2.6 2.3 2.5 3.1 3.3 3.4 3.2 3.7
Rainy days 19 16 17 15 17 15 15 17 17 18 17 18

Average daily sunshine

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

Portlaoise average daily sunshine chart
Average daily sunshine Portlaoise
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 1.9 2.6 3.5 5.1 5.9 5.6 4.9 4.8 4.1 3.1 2.5 1.7

Day / night temperatures

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

Portlaoise average minimum / maximum temperatures (Celsius) Portlaoise average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Portlaoise (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 1.3 1.4 2.1 3.3 5.6 8.5 10.5 9.9 8.2 6.2 2.8 2
Max °C 7.2 7.5 9.5 12 14.7 17.7 19.4 18.9 16.7 13.4 9.5 7.9
Min °F 34.3 34.4 35.8 37.9 42 47.3 50.8 49.8 46.7 43.2 37 35.5
Max °F 39.6 39.9 42.4 45.7 50.2 55.6 58.8 57.9 54.3 49.6 43 40.8

Sea temperature

The graph below shows the average sea temperature.

Portlaoise average sea temperature chart (Celsius) Portlaoise average sea temperature chart (Fahrenheit)
Average sea temperature around Portlaoise in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.2 8.4 8.2 9 10.7 12.9 14.8 15.5 15 13.7 12.1 10.5
°F 48.6 47.1 46.8 48.2 51.2 55.2 58.6 59.9 59 56.7 53.8 51

Wind speed

The graph below shows the average wind speed.

Portlaoise average winspeed by month (km/h) Portlaoise average winspeed by month (mph)
Average wind speed in Portlaoise (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 17 17 17 15 14 13 13 13 14 15 16 17
mph 11 11 11 9 9 8 8 8 9 9 10 11

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.

Portlaoise relative humidity averages
Average relative humidity in Portlaoise
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
90% 87% 83% 80% 79% 80% 80% 82% 85% 88% 90% 92%

Other monthly averages

UV index Best time to go?

Portlaoise weather stats

Portlaoise weather statistics
Hottest month: July 19.1°C 66.4°F
Driest month: April 57mm 2.2ins
Sunniest month: May 5.9hrs
Coldest month: January 7°C 44.6°F
Wettest month: December 93mm 3.7ins
Warmest sea: August 15.5°C 59.9°F
Map showing location of Portlaoise (53.03441, -7.29979)

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