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August in San Jose averages 88°F highs and 62°F lows with zero rain — the warmest month in Silicon Valley, significantly hotter than San Francisco on the same day. The dry heat with zero coastal cooling relief makes breathable linen and cotton the practical choice. Evenings cool dramatically with the Delta breeze, making a light jacket or cardigan essential for outdoor dining after 7pm.
top / Tank & Cami
tank top
breathable — lets heat escape in warm weather
bottom / Shorts
denim shorts
breathable fabric for high-heat days
lightweight linen pants for more coverage
footwear / Sandals
flat sandals
let feet breathe in the heat
white sneakers if you walk a lot
Based on typical August conditions in San Jose. Weather varies year to year — check the live forecast when you're within two weeks of your trip.
San Jose in August offers a quintessential California summer experience: warm, sun-drenched days followed by refreshingly cool evenings. Daytime temperatures typically hover in the low to mid-80s°F (27-30°C), making it ideal for exploring the city's parks and outdoor attractions. However, the unique Bay Area climate means significant temperature swings; once the sun sets, evenings can dip into the comfortable low 50s°F (10-13°C). Precipitation is virtually non-existent during August, ensuring consistently clear skies and dry conditions. The key to dressing comfortably here is mastering the art of layering. For daytime adventures, opt for lightweight, breathable fabrics like linen, cotton, or modal. Think stylish shorts, comfortable sundresses, skirts, or light capris paired with short-sleeved tops. Don't forget sunglasses, a wide-brimmed hat, and sunscreen to protect against the strong California sun. As evening approaches, you'll be grateful for a light jacket, a chic cardigan, or a denim jacket to ward off the chill. A scarf can also be a fashionable and practical addition. Comfortable walking shoes are a must, whether you're strolling downtown or visiting a museum. Embrace versatility to navigate San Jose's delightful August weather with ease and style.
A white sleeveless tank keeps things cool when temperatures peak, anchoring a look that earns its charm through a dusty blue wrap midi skirt. Raffia espadrilles and an ivory crochet bucket hat make it feel like a destination outfit.
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What to Pack for San Jose in August →
Layering is essential for San Jose in August. During the day, wear light, breathable clothing like shorts, sundresses, or linen pants for warm temperatures. For the significant evening temperature drop, always carry a light jacket, cardigan, or denim jacket to stay comfortable.
While daytime temperatures are warm to hot, typically in the 80s°F (27-32°C), San Jose can feel cool in the evenings. Temperatures often drop into the low 50s°F (10-15°C) after sunset, so you will definitely need a light jacket or sweater.
Rain in San Jose during August is exceedingly rare. It is one of the driest months of the year, characterized by consistent sunshine and clear skies. You can confidently leave your umbrella at home and expect dry weather throughout your visit.
Pack a mix of lightweight items for warm days, such as shorts, dresses, and cotton tops. Crucially, include layers like a light jacket, cardigan, or denim jacket for the cool evenings. Don't forget comfortable walking shoes, sunglasses, and sunscreen for sun protection.
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