Hello yash Gandhi, I'll be happy to answer your travel queries from my experience ☺️.
*Since you are having goa and Lavasa Lonavla side for July holidays though both the places are great and unique in thier own way ,Lavasa -lonavala will be preffered much over goa .
*goa is rightly called party Destination and has amazing vibe of Portuguese culture in it but in July time or monsoon season,it's a off season for the place .beaches are never preffered in monsoons. although you can travel and enjoy well but there's a special reason for why to visit Lonavala in July time .
*in July time ,Lonavla will be lush green and offers fresh air and breathtaking views . Maharashtra tourism is best in monsson time .other seasons will be dry dry at Western ghats .
*Monsoon brings heavy rainfall and humidity in air in Lonavala. Best time to visit Lonavala in monsoon is from July-September. Temperature in summer season in Lonavala remains in between 23°C-35°C. People visit hill stations like Lonavala to spend their summer vacations hence it's the best season to visit Lonavala *I have a small suggestion for you, I just checked online and found that there are some great deals for Lonavala available on tripoto itself, do check this link
https://www.tripoto.com/lonavla/tour-packages HAPPY TRAVELS 💓