Search flights, hotels & activities for San Diego
Compare flights, hotels, cars, and activities in one place.
500+airlines & travel sites compared
21,000+routes tracked
€0booking fees from us
Freeprice drop alerts
Things to Do in San Diego in Summer
Real historical weather for San Diego in Summer: average highs of 24°C and lows of 17°C, with around 10mm of rain (averaged over the last 2 years). San Diego is in United States.
24°C
Average high
17°C
Average low
10mm
Typical rainfall
Real things to do in San Diego in Summer
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad

Deluxe Sunset & Day Sail Small Group
★ 5.0(323 reviews)· 2h 30m
From €106

San Diego Harbor Cruise on the Largest Catamaran in San Diego
★ 4.9(47 reviews)· 2h 30m
From €49

Sunset Sail Along the San Diego Skyline
★ 4.9(639 reviews)· 2 hrs
From €97

San Diego Shore Excursion: San Diego Seal Tour
★ 4.8(186 reviews)· 1h 45m
From €50

San Diego Seal Tour
★ 4.7(1,326 reviews)· 1h 45m
From €50

San Diego Hop On Hop Off Trolley Tour
★ 4.7(2,767 reviews)· 2 hrs
From €51

San Diego Whale Watching & Dolphin Cruise
★ 4.6(1,719 reviews)· 3 hrs
From €63

San Diego Harbor Cruise
★ 4.5(3,235 reviews)· 2 hrs
From €33

San Diego Sunset Cruise from Mission Bay
★ 4.4(290 reviews)· 1h 15m
From €38

San Diego Harbor Dinner Cruise
★ 4.1(1,303 reviews)· 3 hrs
From €112
Real listings from Viator, including live ratings and prices — clicking through takes you to book directly.
Other seasons in San Diego
Plan the rest of your trip
Continue planning your trip to San Diego
Same destination, real availability — no need to search again.
FAQs — San Diego in Summer
Based on real historical data (averaged over the last 2 years), expect highs around 24°C and lows around 17°C, with roughly 10mm of rain.