Siao monthly weather averages

Average daytime temperature

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

Siao average temperature chart (Celsius) Siao average temperature chart (Fahrenheit)
Average monthly temperatures in Siao (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 30.8 33.2 35.2 35.5 33.7 32.2 31.3 30.9 30.8 30.7 30.3 29.8
°F 87.4 91.7 95.4 95.9 92.6 89.9 88.4 87.6 87.4 87.2 86.5 85.7

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.

Siao monthly rainfall chart (mm) Siao monthly rainfall chart (inches)
Average monthly rainfall in Siao (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 1 10 26 82 200 262 273 321 289 118 21 2
inches 0 0.4 1 3.2 7.9 10.3 10.8 12.6 11.4 4.6 0.8 0.1
Rainy days 1 2 3 8 16 19 20 22 19 13 4 1

Average annual rainfall in Siao: 1723.7mm (678.6 inches)

Average daily sunshine

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

Siao average daily sunshine chart
Average daily sunshine Siao
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 10 9.8 9.3 8.6 7.8 6.2 6.3 5.6 5.8 7.5 8.8 9.4

Day / night temperatures

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

Siao average minimum / maximum temperatures (Celsius) Siao average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Siao (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 17.1 19.9 22.7 24.3 24.3 24.1 23.7 23.6 23.5 22.6 20.5 17.9
Max °C 31.1 33.5 35.5 35.8 33.9 32.4 31.5 31.1 31 30.9 30.5 30.1
Min °F 62.8 67.8 72.9 75.7 75.7 75.3 74.7 74.4 74.2 72.6 68.9 64.2
Max °F 75.4 80.1 84.4 86 84.4 82.8 81.7 81.1 81 80.1 77.9 75.2

Sea temperature

The graph below shows the average sea temperature.

Siao average sea temperature chart (Celsius) Siao average sea temperature chart (Fahrenheit)
Average sea temperature around Siao in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 25.1 25.1 26 27.5 29 29.5 29.3 29.2 29 28.6 27.7 26.2
°F 77.3 77.2 78.9 81.5 84.2 85.1 84.7 84.5 84.2 83.4 81.8 79.1

Wind speed

The graph below shows the average wind speed.

Siao average winspeed by month (km/h) Siao average winspeed by month (mph)
Average wind speed in Siao (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 7 6 7 7 6 7 7 7 5 7 9 8
mph 4 4 4 4 4 4 4 4 3 4 5 5

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.

Siao relative humidity averages
Average relative humidity in Siao
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
66% 63% 61% 66% 76% 81% 82% 84% 84% 80% 74% 70%

Other monthly averages

UV index Best time to go?

Siao weather stats

Siao weather statistics
Hottest month: April 35.5°C 95.9°F
Driest month: January 1mm 0ins
Sunniest month: January 10hrs
Coldest month: December 29.8°C 85.6°F
Wettest month: August 321mm 12.6ins
Warmest sea: June 29.5°C 85.1°F
Map showing location of Siao (14.79583, 104.67017) Siao map pin © Google

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