December vs April

Strong option

Warm Christmas under palm trees — festive events, occasional rain, and holiday crowds.

• ↑Christmas in LA is a genuinely different experience. The temperature sits at 20°C, and the cognitive dissonance of seeing Christmas lights on palm trees and Santas on surfboards never gets old. The LA Zoo Lights (through December 31), Disneyland's holiday overlay, and Universal Studios Holiday events are all peak-quality productions.
• ↑New Year's Eve in Hollywood and on the Westside has a lower-key energy than New York or Las Vegas but significant atmosphere — rooftop bars citywide run ticketed events and the Hollywood Hills parties are legendary.

Best match

Coachella, perfect weather, and golden afternoon light — the most photographed LA month.

• ↑Coachella Valley Music and Arts Festival (two weekends in mid-April, approximately 125,000 attendees per weekend) sends a wave of creative energy through LA before, during, and after the event. Even without attending, the city's pool parties, brand activations, and ancillary events are open and atmospheric. The drive out on I-10 to Indio passes through the windmill fields at Palm Springs — worth the three-hour round trip.
• ↑April delivers the best average weather of the entire year — 23°C highs, near-zero rainfall, 9+ hours of daily sunshine, and a dry clarity that makes every view across the city crisp. Sunsets over the Pacific from the Palisades or Point Dume are extraordinary.