Castries monthly weather averages

Average daytime temperature

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

Castries average temperature chart (Celsius) Castries average temperature chart (Fahrenheit)
Average monthly temperatures in Castries (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 10 11.3 13.9 16.9 20.8 24.9 28.6 27.7 24.4 19.4 13.7 10.4
°F 49.9 52.3 57.1 62.4 69.4 76.9 83.4 81.8 76 67 56.7 50.7

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.

Castries monthly rainfall chart (mm) Castries monthly rainfall chart (inches)
Average monthly rainfall in Castries (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 78 62 78 54 55 47 27 49 78 124 68 71
inches 3.1 2.5 3.1 2.1 2.1 1.9 1.1 1.9 3.1 4.9 2.7 2.8
Rainy days 11 10 10 11 11 8 6 7 8 10 10 10

Average annual rainfall in Castries: 837.867mm (329.9 inches)

Average daily sunshine

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

Castries average daily sunshine chart
Average daily sunshine Castries
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.9 5.5 6.6 7.6 8.6 10.3 11.5 10.2 8.2 6.4 5.1 4.5

Day / night temperatures

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

Castries average minimum / maximum temperatures (Celsius) Castries average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Castries (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 2.1 2.9 4.5 7.1 10.4 14 16.8 16.3 13.9 10.2 5.5 2.7
Max °C 10.2 11.5 14.2 17.2 21.1 25.2 28.9 28 24.7 19.7 13.9 10.6
Min °F 35.7 37.2 40 44.7 50.6 57.2 62.2 61.3 57 50.3 41.9 36.8
Max °F 43 45 48.7 53.8 60.3 67.3 73 71.8 66.7 58.8 49.5 43.9

Sea temperature

The graph below shows the average sea temperature.

Castries average sea temperature chart (Celsius) Castries average sea temperature chart (Fahrenheit)
Average sea temperature around Castries in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 12.8 12.5 12.8 13.7 16 18.9 21.2 22.2 20.6 18.3 15.8 13.7
°F 55 54.5 55 56.7 60.8 66 70.1 71.9 69.1 64.9 60.4 56.6

Wind speed

The graph below shows the average wind speed.

Castries average winspeed by month (km/h) Castries average winspeed by month (mph)
Average wind speed in Castries (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 14 15 15 15 13 13 13 13 12 12 13 14
mph 9 9 9 9 8 8 8 8 8 8 8 9

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.

Castries relative humidity averages
Average relative humidity in Castries
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
78% 74% 68% 64% 67% 64% 59% 63% 67% 72% 75% 77%

Other monthly averages

UV index Best time to go?

Castries weather stats

Castries weather statistics
Hottest month: July 28.6°C 83.5°F
Driest month: July 27mm 1.1ins
Sunniest month: July 11.5hrs
Coldest month: January 10°C 50°F
Wettest month: October 124mm 4.9ins
Warmest sea: August 22.2°C 72°F
Map showing location of Castries (43.67972, 3.98222) Castries map pin © Google

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