Meaning: The conditions outside were just right for a picnic.
Choice of Words: Weather means the state of the atmosphere, perfect means very good or ideal, and picnic is an outdoor meal.
Alternative Expressions
The weather was ideal for an outdoor gathering.
Meaning: This means that the weather was very good and it was a great day to have a party or other event outside.
Choice of Words:Ideal means perfect or the best possible. Gathering means a group of people who have come together for a particular purpose. When you put them together, "The weather was ideal for an outdoor gathering" means that the conditions outside were perfect for having a group of people together outside.
The weather was lovely for a day in the park.
Meaning: This means that the weather was very good and it was a great day to go for a walk or have a picnic in the park.
Choice of Words:Lovely means very beautiful or pleasing. Day means a 24-hour period starting at midnight. Park means a public green space used for recreation and leisure. When you put them together, "The weather was lovely for a day in the park" means that the conditions outside were very nice for spending a day in a park.