Pathanamthitta experiences hot and humid summers with temperature ranging around 20 to 30 degrees Celcius. Monsoon season in the town receives heavy rainfalls restricting the outdoor excursions. It rains 9 months in a year. However, the winter months are extremely pleasant and are recommended as the best time to explore this enchanting land.
| Month | High/Low (°C) | Rain |
|---|---|---|
| January | 36°/ 21° | 3 days |
| February | 37°/ 22° | 2 days |
| March | 37°/ 23° | 16 days |
| April | 36°/ 23° | 23 days |
| May | 34°/ 24° | 24 days |
| June | 30°/ 23° | 25 days |
| July | 29°/ 23° | 24 days |
| August | 28°/ 22° | 30 days |
| September | 29°/ 23° | 27 days |
| October | 30°/ 22° | 31 days |
| November | 32°/ 22° | 22 days |
| December | 34°/ 22° | 14 days |