The climate here is tropical. The rainfall in Colombo is significant, with precipitation even during the driest month. According to Köppen and Geiger, this climate is classified as Af. The average annual temperature is 27.0 °C in Colombo. The average annual rainfall is 2348 mm.
Climate graph Colombo
The driest month is February, with 73 mm of rain. In May, the precipitation reaches its peak, with an average of 360 mm.
Temperature graph Colombo
April is the warmest month of the year. The temperature in April averages 28.0 °C. At 25.9 °C on average, December is the coldest month of the year.
Climate table // historical Weather data
| Avg. Temperature (°C) | Avg. Temperature (°F) | Precipitation / Rainfall (mm) | |
|---|---|---|---|
| January | 26 | 78.8 | 74 |
| February | 26.3 | 79.3 | 73 |
| March | 27.4 | 81.3 | 136 |
| April | 28 | 82.4 | 246 |
| May | 28 | 82.4 | 360 |
| June | 27.3 | 81.1 | 208 |
| July | 27.3 | 81.1 | 134 |
| August | 27.4 | 81.3 | 103 |
| September | 27.2 | 81.0 | 180 |
| October | 26.7 | 80.1 | 358 |
| November | 26.2 | 79.2 | 317 |
| December | 25.9 | 78.6 | 159 |
| January | February | March | April | May | June | July | August | September | October | November | December | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg. Temperature (°C) | 26 | 26.3 | 27.4 | 28 | 28 | 27.3 | 27.3 | 27.4 | 27.2 | 26.7 | 26.2 | 25.9 |
| Min. Temperature (°C) | 21.9 | 22 | 23.2 | 24.2 | 25.2 | 24.9 | 24.9 | 25 | 24.6 | 23.7 | 22.7 | 22.2 |
| Max. Temperature (°C) | 30.2 | 30.7 | 31.6 | 31.8 | 30.8 | 29.7 | 29.7 | 29.8 | 29.8 | 29.7 | 29.8 | 29.7 |
| Avg. Temperature (°F) | 78.8 | 79.3 | 81.3 | 82.4 | 82.4 | 81.1 | 81.1 | 81.3 | 81.0 | 80.1 | 79.2 | 78.6 |
| Min. Temperature (°F) | 71.4 | 71.6 | 73.8 | 75.6 | 77.4 | 76.8 | 76.8 | 77.0 | 76.3 | 74.7 | 72.9 | 72.0 |
| Max. Temperature (°F) | 86.4 | 87.3 | 88.9 | 89.2 | 87.4 | 85.5 | 85.5 | 85.6 | 85.6 | 85.5 | 85.6 | 85.5 |
| Precipitation / Rainfall (mm) | 74 | 73 | 136 | 246 | 360 | 208 | 134 | 103 | 180 | 358 | 317 | 159 |
There is a difference of 287 mm of precipitation between the driest and wettest months. The variation in annual temperature is around 2.1 °C.