Ratnapura monthly weather averages

Average daytime temperature

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

Ratnapura average temperature chart (Celsius) Ratnapura average temperature chart (Fahrenheit)
Average monthly temperatures in Ratnapura (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 28.4 29.4 30.3 30.3 29.2 28.3 28.2 28.1 28.2 28.3 28.4 28
°F 83.2 84.9 86.5 86.5 84.6 82.9 82.7 82.5 82.8 83 83.2 82.3

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.

Ratnapura monthly rainfall chart (mm) Ratnapura monthly rainfall chart (inches)
Average monthly rainfall in Ratnapura (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 97 112 147 271 319 258 205 191 264 357 308 198
inches 3.8 4.4 5.8 10.7 12.6 10.2 8.1 7.5 10.4 14 12.1 7.8
Rainy days 5 5 8 13 12 14 11 11 13 15 15 11

Average daily sunshine

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

Ratnapura average daily sunshine chart
Average daily sunshine Ratnapura
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7.6 8.3 8.8 7.8 6.4 6.2 6.1 6.2 6.1 6.3 6.6 6.7

Day / night temperatures

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

Ratnapura average minimum / maximum temperatures (Celsius) Ratnapura average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Ratnapura (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 19.6 19.8 20.9 22.1 22.9 22.8 22.5 22.4 22.1 21.5 21 20.5
Max °C 28.7 29.6 30.5 30.5 29.4 28.4 28.3 28.2 28.4 28.5 28.6 28.2
Min °F 67.2 67.6 69.6 71.8 73.1 73 72.5 72.3 71.7 70.7 69.8 68.8
Max °F 75.4 76.5 78.3 79.3 79 78.1 77.7 77.5 77.4 77 76.6 75.7

Sea temperature

The graph below shows the average sea temperature.

Ratnapura average sea temperature chart (Celsius) Ratnapura average sea temperature chart (Fahrenheit)
Average sea temperature around Ratnapura in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 27.7 28.2 29 29.8 29.4 28.5 28 27.8 28.1 28.4 28.6 28.1
°F 81.9 82.7 84.2 85.6 84.9 83.3 82.4 82.1 82.5 83.2 83.5 82.5

Wind speed

The graph below shows the average wind speed.

Ratnapura average winspeed by month (km/h) Ratnapura average winspeed by month (mph)
Average wind speed in Ratnapura (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 12 11 9 8 13 15 14 14 14 10 9 11
mph 7 7 6 5 8 9 9 9 9 6 6 7

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.

Ratnapura relative humidity averages
Average relative humidity in Ratnapura
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
75% 72% 74% 79% 81% 80% 79% 78% 79% 81% 81% 79%

Other monthly averages

UV index Best time to go?

Ratnapura weather stats

Ratnapura weather statistics
Hottest month: April 30.3°C 86.5°F
Driest month: January 97mm 3.8ins
Sunniest month: March 8.8hrs
Coldest month: January 28.4°C 83.1°F
Wettest month: October 357mm 14.1ins
Warmest sea: April 29.8°C 85.6°F
Map showing location of Ratnapura (6.68278, 80.39917)

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