Rio Maior monthly weather averages

Average daytime temperature

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

Rio Maior average temperature chart (Celsius) Rio Maior average temperature chart (Fahrenheit)
Average monthly temperatures in Rio Maior (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 13.6 14.5 16.5 18 20.9 24.1 27 27.4 25.7 21.5 16.6 13.8
°F 56.5 58.1 61.6 64.5 69.6 75.4 80.6 81.3 78.3 70.8 61.9 56.8

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.

Rio Maior monthly rainfall chart (mm) Rio Maior monthly rainfall chart (inches)
Average monthly rainfall in Rio Maior (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 136 135 87 83 61 37 10 11 41 101 130 131
inches 5.3 5.3 3.4 3.3 2.4 1.5 0.4 0.4 1.6 4 5.1 5.1
Rainy days 16 15 14 13 10 7 4 3 7 12 14 14

Average annual rainfall in Rio Maior: 991.9mm (390.5 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Rio Maior

Rio Maior average daily sunshine chart
Average daily sunshine Rio Maior
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.9 5.5 6.9 7.9 9.6 10.4 11.8 11.5 8.9 7.1 5.5 5

Day / night temperatures

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

Rio Maior average minimum / maximum temperatures (Celsius) Rio Maior average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Rio Maior (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 6.9 7.6 8.4 9.6 11.7 14.3 16.2 16.2 15.5 13.3 9.6 7.5
Max °C 13.8 14.7 16.7 18.3 21.1 24.4 27.3 27.7 26 21.8 16.8 14
Min °F 44.3 45.6 47 49.2 53.1 57.7 61.1 61.1 59.8 55.9 49.3 45.4
Max °F 50.5 52 54.5 57 61.5 66.7 71.1 71.4 69.3 63.5 55.8 51.3

Sea temperature

The graph below shows the average sea temperature.

Rio Maior average sea temperature chart (Celsius) Rio Maior average sea temperature chart (Fahrenheit)
Average sea temperature around Rio Maior in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 15.2 14.6 14.7 15.3 16.5 18.2 19.3 19.8 19.7 18.9 17.6 16.2
°F 59.3 58.3 58.4 59.6 61.6 64.8 66.7 67.6 67.4 66 63.7 61.1

Wind speed

The graph below shows the average wind speed.

Rio Maior average winspeed by month (km/h) Rio Maior average winspeed by month (mph)
Average wind speed in Rio Maior (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 14 14 14 14 14 13 13 13 12 13 13 14
mph 9 9 9 9 9 8 8 8 7 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.

Rio Maior relative humidity averages
Average relative humidity in Rio Maior
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
80% 78% 73% 72% 69% 68% 65% 63% 67% 73% 77% 79%

Other monthly averages

UV index Best time to go?

Rio Maior weather stats

Rio Maior weather statistics
Hottest month: August 27.4°C 81.3°F
Driest month: July 10mm 0.4ins
Sunniest month: August 11.5hrs
Coldest month: January 13.6°C 56.5°F
Wettest month: January 136mm 5.4ins
Warmest sea: August 19.8°C 67.6°F
Map showing location of Rio Maior (39.33732, -8.93906) Rio Maior map pin © Google

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