Dumai monthly weather averages
Average daytime temperature
The bar chart below shows the average monthly peak daytime temperatures at Dumai
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 31.7 | 32.3 | 32.6 | 32.3 | 32.4 | 32.1 | 31.8 | 32 | 31.9 | 31.9 | 31.6 | 31.1 |
| °F | 89 | 90.1 | 90.7 | 90.1 | 90.3 | 89.7 | 89.2 | 89.5 | 89.4 | 89.5 | 88.8 | 88 |
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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 156 | 145 | 186 | 213 | 166 | 165 | 156 | 181 | 218 | 233 | 238 | 204 |
| inches | 6.1 | 5.7 | 7.3 | 8.4 | 6.5 | 6.5 | 6.1 | 7.1 | 8.6 | 9.2 | 9.4 | 8 |
| Rainy days | 14 | 13 | 16 | 18 | 15 | 12 | 14 | 15 | 17 | 20 | 23 | 19 |
Average annual rainfall in Dumai: 2363.467mm (930.5 inches)
Average daily sunshine
The bar chart below shows the average daily sunshine hours in Dumai
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 6.3 | 7.2 | 7.1 | 7.1 | 7.4 | 7.3 | 7.2 | 6.9 | 6.1 | 6.3 | 6 | 5.9 |
Day / night temperatures
The graph below shows the daily range of temperatures for each month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | 21.9 | 22.1 | 22.6 | 22.9 | 22.8 | 22.5 | 22.2 | 22.2 | 22.3 | 22.5 | 22.6 | 22.3 |
| Max °C | 31.9 | 32.5 | 32.9 | 32.5 | 32.6 | 32.3 | 32 | 32.2 | 32.2 | 32.2 | 31.8 | 31.3 |
| Min °F | 71.4 | 71.8 | 72.6 | 73.2 | 73 | 72.5 | 72 | 72 | 72.1 | 72.4 | 72.7 | 72.1 |
| Max °F | 80.4 | 81.1 | 81.9 | 81.9 | 81.9 | 81.3 | 80.8 | 81 | 81 | 81.1 | 81 | 80.2 |
Sea temperature
The graph below shows the average sea temperature.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 28.4 | 28.5 | 29.2 | 30 | 30.3 | 30.1 | 29.6 | 29.4 | 29.4 | 29.5 | 29.4 | 28.8 |
| °F | 83.2 | 83.3 | 84.5 | 85.9 | 86.5 | 86.1 | 85.3 | 84.9 | 84.8 | 85.1 | 84.8 | 83.8 |
Wind speed
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 9 | 9 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 |
| mph | 6 | 6 | 5 | 5 | 4 | 5 | 5 | 5 | 5 | 5 | 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 82% | 81% | 82% | 84% | 84% | 83% | 84% | 83% | 84% | 84% | 85% | 84% |
Other monthly averages
Dumai weather stats
| Hottest month: | March | 32.6°C 90.7°F |
|---|---|---|
| Driest month: | February | 145mm 5.7ins |
| Sunniest month: | May | 7.4hrs |
| Coldest month: | December | 31.1°C 88°F |
| Wettest month: | November | 238mm 9.4ins |
| Warmest sea: | May | 30.3°C 86.5°F |
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