What is the difference between Monsoon and Pre-Monsoon rain

Pre Monsoon and Monsoon rainPre-Monsoon rain commences and withdraws from Peninsular India earlier than the northern parts. June is very much a pre-Monsoon season for North India but the Southwest Monsoon generally strikes Kerala by June 1. Simultaneously, Monsoon reaches parts of Northeast India.

But, how do we confirm Monsoon onset and differentiate Monsoon showers from pre-Monsoon rain? Listed below are few characteristics and differences between the two in Peninsular India:


Pre-Monsoon season is synonymous with heat and humidity with uncomfortable conditions throughout the day and night. However, fairly stronger winds bring down temperatures to a comfortable level during Monsoon in India.

Types of Clouds

Clouds are more of vertical in nature during the pre-Monsoon season and mostly come up during late afternoon and early evening hours. They are triggered by high temperatures and towering clouds build up. On the other hand, the Monsoon season is known for stratiform clouds, mainly sheet-like continuous layers of clouds. Depths of these clouds are less but the layers are thick and moisture laden.

Nature of Precipitation

Pre-Monsoon rain is sharp and intense and gets over for the day, after just one spell. But, the Southwest Monsoon brings longer spells of rain which are also recurring in nature.

Time of Occurrence

In the Monsoon season, rain can commence in Peninsular India during any time of the day, though the preferred time is generally late evening. On the other hand, pre-Monsoon rain occurs in the late afternoon and early evening hours.

Nature of Winds

Pre-Monsoon showers are accompanied by squally winds leading to dust storms but during Monsoon, winds are persistently strong.

Prominent Sea and Land Breeze

Due to differential heating and huge diurnal variation of temperatures, the sea and land breeze remains prominent before the arrival of Southwest Monsoon in India. But, with the available humidity and overcast skies, the breezes are not that marked during Monsoons.

Moreover, pre-Monsoon rain is patchy in nature but Southwest Monsoon covers large areas and the weather remains similar in vast pockets. Chill in the air persists irrespective of the terrain, be it Mumbai, Pune, Hyderabad or Bangalore. Chennai being on the rain shadow area of Tamil Nadu does not receive as much rain as other places.

Image Credit - sandeshkadur.com

Please Note: Any information picked from here should be attributed to skymetweather.com




Weather on Twitter
In #Rajasthan due to weather activities, some relief is expected from the #hot and #dry weather conditions in the r… t.co/lGwM8nCp6F
Tuesday, April 23 21:15Reply
पंजाब का साप्ताहिक मौसम पूर्वानुमान (23 से 29 अप्रैल) t.co/2UTFFOf1Nu
Tuesday, April 23 21:00Reply
Weather Forecast April 24 t.co/T3KTEkLuq9
Tuesday, April 23 20:45Reply
It seems that the wait for season’s maiden #cyclonic storm is going to end soon. t.co/8bsl07Wb5d #cyclonefani
Tuesday, April 23 20:30Reply
Rising sea levels will become a big problem for the city of #Chennai in less than a century from now. t.co/0xu9DdpdcP
Tuesday, April 23 20:00Reply
ओड़ीशा, छत्तीसगढ़, तेलंगाना, आंध्रा तथा कर्नाटक के कुछ भागों में गरज के साथ बारिश की संभावना t.co/bFnqqpbHkw
Tuesday, April 23 19:15Reply
24 अप्रैल का मौसम पूर्वानुमान t.co/NVA4PUrKRF
Tuesday, April 23 19:00Reply
#Puducherry, the French escapade of India t.co/vIyEtfBloI
Tuesday, April 23 18:56Reply
The northern districts of #Punjab like Pathankot, #Amritsar, Gurdaspur, Jalandhar, #Ludhiana and #Chandigarh might… t.co/NpHWJ6WpLu
Tuesday, April 23 18:30Reply
RT @Mpalawat: Both observatories of #Delhi have crossed 40 degree today. #Palam recorded highest of the season with a #Maximum of 42.5 degr…
Tuesday, April 23 18:27Reply

latest news

Skymet weather

Download the Skymet App

Our app is available for download so give it a try