The bar chart below shows the average monthly peak daytime temperatures at Galle
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 29.4 | 29.7 | 30.5 | 30.5 | 29.8 | 29.1 | 28.8 | 28.6 | 28.8 | 28.8 | 29.1 | 29.1 |
| °F | 84.8 | 85.5 | 86.8 | 87 | 85.6 | 84.4 | 83.8 | 83.4 | 83.9 | 83.9 | 84.4 | 84.3 |
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.
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 | 94 | 101 | 122 | 234 | 304 | 207 | 202 | 173 | 249 | 340 | 296 | 181 |
| inches | 3.7 | 4 | 4.8 | 9.2 | 12 | 8.1 | 7.9 | 6.8 | 9.8 | 13.4 | 11.7 | 7.1 |
| Rainy days | 5 | 5 | 7 | 12 | 12 | 12 | 10 | 10 | 12 | 14 | 14 | 10 |
Average annual rainfall in Galle: 2587.533mm (1018.7 inches)
The bar chart below shows the average daily sunshine hours in Galle
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 7.9 | 8.6 | 8.9 | 7.8 | 6.5 | 6.4 | 6.3 | 6.4 | 6.2 | 6.5 | 6.9 | 6.9 |
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 | 21.5 | 21.9 | 23 | 23.9 | 24.5 | 24.4 | 23.7 | 23.7 | 23.7 | 23.1 | 22.6 | 22.2 |
| Max °C | 29.6 | 29.9 | 30.7 | 30.7 | 29.9 | 29.3 | 28.9 | 28.7 | 29 | 29 | 29.3 | 29.3 |
| Min °F | 70.6 | 71.4 | 73.3 | 75 | 76.1 | 75.8 | 74.7 | 74.7 | 74.6 | 73.5 | 72.6 | 71.9 |
| Max °F | 77.9 | 78.6 | 80.2 | 81.1 | 81 | 80.2 | 79.3 | 79.2 | 79.3 | 78.8 | 78.6 | 78.3 |
The graph below shows the average sea temperature.
| 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 |
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 14 | 13 | 11 | 10 | 14 | 16 | 15 | 16 | 15 | 12 | 10 | 12 |
| mph | 9 | 8 | 7 | 6 | 9 | 10 | 9 | 10 | 9 | 7 | 6 | 7 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
The graph below shows the average relative humidity.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 75% | 75% | 77% | 80% | 82% | 81% | 79% | 79% | 80% | 81% | 81% | 79% |
| Hottest month: | April | 30.5°C 86.9°F |
|---|---|---|
| Driest month: | January | 94mm 3.7ins |
| Sunniest month: | March | 8.9hrs |
| Coldest month: | January | 29.4°C 84.9°F |
| Wettest month: | October | 340mm 13.4ins |
| Warmest sea: | April | 29.8°C 85.6°F |