The best time to visit Goa for beach tourism and outdoor activities is generally during the:

Winter
Monsoon
Summer
Any time of year

The best time to visit Goa for beach tourism and outdoor activities is during the winter, from October to March. The weather is pleasant during this time, with average temperatures ranging from 25 to 30 degrees Celsius. The beaches are also less crowded during the winter, making it a more enjoyable experience.

The monsoon season in Goa runs from June to September. During this time, the weather is hot and humid, with heavy rains. The beaches are often closed during the monsoon, as they are not safe to swim in.

The summer season in Goa runs from April to May. The weather is very hot and humid during this time, with average temperatures ranging from 30 to 35 degrees Celsius. The beaches are also very crowded during the summer, making it a less enjoyable experience.

Therefore, the best time to visit Goa for beach tourism and outdoor activities is during the winter, from October to March.