Best Time for Thames River Cruises in London

Thames river cruises operate year-round, but the optimal experience is June through August.

Why Summer Wins

• Weather: Mild temperatures (18–23°C / 64–73°F) and lowest rainfall probability.
• Daylight: 16+ hours of light; evening cruises (7–10 PM) offer golden-hour views of landmarks.
• Atmosphere: Riverside festivals, open-air bars, and vibrant South Bank activity.
• Open-Decks: Most sightseeing boats (City Cruises, Uber Boat, Thames Clippers) operate open upper decks only in fair weather.

Shoulder Seasons (May, September)

Excellent alternatives: fewer crowds, pleasant weather, lower prices. April/October are viable but cooler/wetter.

Winter (Nov–Mar)

Enclosed, heated boats only. Festive lights cruises (Dec) are magical but cold. Fog can disrupt schedules.

Tip: Book sunset or "Illuminations" evening cruises in summer for the iconic London skyline glow.