St Helens monthly weather averages

Contents

Average daytime temperature

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

St Helens average temperature chart (Celsius) St Helens average temperature chart (Fahrenheit)
Average monthly temperatures in St Helens (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 21.1 21.4 20.3 18.1 15.4 13.3 12.7 13.3 14.9 16.6 17.9 19.4
°F 69.9 70.6 68.5 64.7 59.7 56 54.8 55.9 58.8 61.9 64.3 67

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.

St Helens monthly rainfall chart (mm) St Helens monthly rainfall chart (inches)
Average monthly rainfall in St Helens (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 47 48 68 69 81 70 82 87 68 69 70 80
inches 1.8 1.9 2.7 2.7 3.2 2.7 3.2 3.4 2.7 2.7 2.8 3.1
Rainy days 13 12 13 13 14 15 14 14 14 16 14 12

Average annual rainfall in St Helens: 944.2mm (371.7 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in St Helens

St Helens average daily sunshine chart
Average daily sunshine St Helens
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 9.2 8.6 7.3 6.4 4.8 4.5 5 5.6 6.5 7.6 8.1 8.5

Day / night temperatures

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

St Helens average minimum / maximum temperatures (Celsius) St Helens average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in St Helens (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 12.1 12.6 11.7 9.7 7.6 5.7 4.8 5.4 6.7 7.8 9.5 11
Max °C 21.3 21.7 20.5 18.4 15.6 13.5 12.9 13.5 15.1 16.8 18.2 19.7
Min °F 53.8 54.6 53.1 49.4 45.7 42.3 40.6 41.6 44.1 46 49 51.7
Max °F 62.1 62.8 61 57.2 52.9 49.3 47.8 48.9 51.6 54.1 56.8 59.5

Sea temperature

The graph below shows the average sea temperature.

St Helens average sea temperature chart (Celsius) St Helens average sea temperature chart (Fahrenheit)
Average sea temperature around St Helens in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 17.6 18.4 18.3 17.4 16.1 14.9 13.9 13.2 13.3 13.6 14.8 16.2
°F 63.6 65.2 65 63.3 61 58.7 57 55.8 55.9 56.6 58.6 61.2

Wind speed

The graph below shows the average wind speed.

St Helens average winspeed by month (km/h) St Helens average winspeed by month (mph)
Average wind speed in St Helens (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 17 17 16 16 14 14 14 16 18 19 19 18
mph 11 10 10 10 9 9 9 10 11 12 12 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.

St Helens relative humidity averages
Average relative humidity in St Helens
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
62% 64% 67% 71% 77% 79% 78% 76% 71% 68% 66% 64%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

St Helens weather stats

St Helens weather statistics
Hottest month: February 21.4°C 70.5°F
Driest month: January 47mm 1.9ins
Sunniest month: February 8.6hrs
Coldest month: July 12.7°C 54.9°F
Wettest month: August 87mm 3.4ins
Warmest sea: February 18.4°C 65.1°F
Map showing location of St Helens (-41.32028, 148.23889) St Helens map pin © Google

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