San Diego Weather in July 2026
“The kind of pleasant weather you build a trip around.”
Roughly 0 rainy days across the month, on average.
July puts San Diego in peak summer mode. Highs reach 24.5C (76F) with lows of 18.2C (64F), rainfall stays minimal at 3mm across barely a rainy day, and sunshine hits 12.4 hours daily. The marine layer weakens as inland heat pulls air offshore, and by mid-month most days start clear. Ocean water climbs to 20C, and Pacific Beach fills before 9am on weekends.
The third week is Comic-Con — 130,000 badge holders swarm the Gaslamp, hotels within a mile clear $600/night minimums, and unofficial Nerd HQ takeovers spread to Petco Park and the USS Midway. Locals know to avoid downtown entirely that week and head to North County beaches like Cardiff and Solana. La Jolla Cove snorkeling peaks as leopard sharks aggregate in the warm shallow reserve — the July gathering can hit 5,000 individuals. Fourth of July fireworks stage from Big Bay, Sea World, La Jolla Cove, and Coronado simultaneously.
Ten-year data shows July warming steadily — highs up roughly 0.7C since 2015 — while marine layer duration shrinks in the second half of the month as Pacific temperatures rise. 2026 forecasts suggest a warmer-than-average July with early clearing of the marine layer and elevated ocean temperatures fueling stronger afternoon sea breezes. Rainfall stays essentially zero outside a rare monsoon backdoor surge.
For 2026 travelers, avoid Comic-Con week (July 23-26 in 2026) unless you have badges — every rate spikes 3x. Non-Comic-Con weeks still book heavily but offer standard summer pricing. La Jolla Shores parking fills by 8am on weekends. Book leopard shark snorkel tours by early June 2026 for July slots; operators cap groups at 6 and sell out four to six weeks ahead throughout the month.
The city runs on microclimates: it can be 18C and foggy in Ocean Beach while it's 32C and dry in El Cajon, 20 miles apart. Locals never say 'San Diego' for their neighborhood — it's Hillcrest, North Park, Barrio Logan, or PB. The Convoy district in Kearny Mesa has better Sichuan and Korean food than anywhere in LA, and no tourist ever finds it. 'Freeway' takes 'the' — 'the 5,' 'the 805.'
What to pack for San Diego in July
July is warm, sunny, and beach-focused with cool evenings from the offshore breeze.
- Swimwear and rashguard for daily beach time
- T-shirts, shorts, sundresses for warm days
- Light cardigan or hoodie for cool evenings near the water
- Wide-brim hat and SPF 50 for peak UV
- Water sandals for hot boardwalks and coastal rocks
What to pack for San Diego in July
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Where to stay in San Diego
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Compare hotels on Booking.com→Estimated July trip to San Diego
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Things worth doing
Comic-Con (with badges) or North County escape without; La Jolla Cove leopard shark snorkeling; July 4 Big Bay Boom fireworks; Pacific Beach boardwalk cruise; Sunset Cliffs sunset; Coronado Ferry Landing; Del Mar Racetrack opening day; Torrey Pines State Reserve morning hike.
July vs. the rest of the year
How this month compares in San Diego. Tap any month to read more.
highlighted months are among the best time to visit.
Best time to visit San Diego
July is one of the best months to visit San Diego — alongside April, June, August. 11-year climate data (2015–2025) confirms it: comfortable temperatures, manageable rainfall, and a healthy dose of sunshine.
See the full best-time-to-visit guide for San DiegoOther places with a similar climate right now
San Diego in July — FAQ
Q01Should I visit San Diego in July?
Should I visit San Diego in July?
Yes — this is one of the best months of the year to visit. In July, San Diego averages a high of 25°C (76°F) and a low of 18°C (65°F), with 3mm of rainfall across roughly 0 rainy days. September-October see the marine layer finally burn off by 10am and water temperatures peak at 21C, prime for La Jolla Cove snorkeling with leopard sharks.
Q02What temperatures should I expect in San Diego during July?
What temperatures should I expect in San Diego during July?
The average high temperature in San Diego during July is 25°C (76°F), with an average low of 18°C (65°F). These figures are averaged from 11 complete years of daily records (2015–2025, Open-Meteo Archive). August Santa Ana winds push inland temperatures past 35C; locals abandon the county fair and cluster at Pacific Beach or drive to Coronado's ferry-cooled sand.
Q03Is July a rainy month in San Diego?
Is July a rainy month in San Diego?
San Diego averages approximately 0 rainy days in July, with a total monthly rainfall of about 3mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04How should I dress for San Diego in July?
How should I dress for San Diego in July?
For San Diego in July, pack layered clothing for changing temperatures, sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on 11 complete years of weather averages for this specific month. Light hoodie for June Gloom evenings — the marine layer drops temperatures 10 degrees after sunset even in summer.
Q05Is July a busy travel month for San Diego?
Is July a busy travel month for San Diego?
Tourist crowds in San Diego during July are typically high — this is peak season, expect crowds and higher prices. Consider this when planning accommodation — prices track crowd levels closely. The city runs on microclimates: it can be 18C and foggy in Ocean Beach while it's 32C and dry in El Cajon, 20 miles apart. Locals never say 'San Diego' for their neighborhood — it's Hillcrest, North Park, Barrio Logan, or PB. The Convoy district in Kearny Mesa has better Sichuan and Korean food than anywhere in LA, and no tourist ever finds it. 'Freeway' takes 'the' — 'the 5,' 'the 805.'