Castleisland monthly weather averages

Contents

Average daytime temperature

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

Castleisland average temperature chart (Celsius) Castleisland average temperature chart (Fahrenheit)
Average monthly temperatures in Castleisland (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.7 7.8 9.4 11.3 13.7 16.2 17.8 17.7 15.9 13.1 9.8 8.5
°F 45.8 46 48.8 52.4 56.7 61.1 64.1 63.9 60.7 55.6 49.6 47.3

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.

Castleisland monthly rainfall chart (mm) Castleisland monthly rainfall chart (inches)
Average monthly rainfall in Castleisland (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 149 109 104 75 82 73 78 95 117 133 145 160
inches 5.9 4.3 4.1 3 3.2 2.9 3.1 3.7 4.6 5.2 5.7 6.3
Rainy days 23 19 20 16 18 17 16 20 19 22 22 23

Average annual rainfall in Castleisland: 1364.233mm (537.1 inches)

Average daily sunshine

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

Castleisland average daily sunshine chart
Average daily sunshine Castleisland
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 1.8 2.5 3.6 5.4 6.3 5.7 5.1 5 4.1 2.9 2.2 1.6

Day / night temperatures

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

Castleisland average minimum / maximum temperatures (Celsius) Castleisland average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Castleisland (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 2.6 2.5 3.3 4.3 6.5 9.3 11 10.9 9.5 7.6 4.5 3.6
Max °C 7.8 7.9 9.5 11.5 13.9 16.4 18 17.9 16.1 13.3 9.9 8.6
Min °F 36.7 36.5 37.9 39.7 43.7 48.7 51.8 51.6 49.1 45.6 40.1 38.5
Max °F 41.4 41.4 43.5 46.2 50.4 55 58.1 57.9 55 50.7 45 43

Sea temperature

The graph below shows the average sea temperature.

Castleisland average sea temperature chart (Celsius) Castleisland average sea temperature chart (Fahrenheit)
Average sea temperature around Castleisland in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10.2 9.8 9.7 10.2 11.6 13.7 15.4 15.9 15 13.5 11.9 10.8
°F 50.4 49.6 49.4 50.4 52.9 56.6 59.7 60.6 59 56.3 53.5 51.5

Wind speed

The graph below shows the average wind speed.

Castleisland average winspeed by month (km/h) Castleisland average winspeed by month (mph)
Average wind speed in Castleisland (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 23 22 22 19 19 17 16 17 18 20 21 22
mph 14 14 14 12 12 11 10 10 11 13 13 14

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.

Castleisland relative humidity averages
Average relative humidity in Castleisland
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
90% 87% 84% 81% 81% 82% 83% 84% 86% 88% 89% 91%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Castleisland weather stats

Castleisland weather statistics
Hottest month: July 17.8°C 64°F
Driest month: June 73mm 2.9ins
Sunniest month: May 6.3hrs
Coldest month: January 7.7°C 45.9°F
Wettest month: December 160mm 6.3ins
Warmest sea: August 15.9°C 60.6°F
Map showing location of Castleisland (52.23333, -9.46667) Castleisland map pin © Google

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