Like other cities and towns in Haryana and north India, Karnal enjoys mild and pleasant climate from November to April and, so this is the best time to visit the city.
Summer stretches from March to May and sometimes extends to June. The temperature ranges from 22-40°C and is accompanied by hot, dry winds.
Monsoon season is from July to September and during this period, the city receives heavy intermittent rainfall. The sky remains clouded, and the weather is wet and humid.
The winter season is from November to February. The weather during this period is mild and pleasant, and the temperature remains between 12°C to 20°C.