San Jose · August
Run in the morning.
Comfortable average high of 84°F, dipping to 60°F at night. Dry month — only 1 measurable rain days on average. Comfortable conditions all day, but morning consistently delivers the best combination of cool air and clear skies.
Avg high / low
84° / 60°F
Humidity
62%
Rain days
1/mo
Wind
12 mph
What August feels like in San Jose
Sunrise
06:25
Mid-month average
Sunset
19:57
Mid-month average
Time-of-day breakdown
Morning
Steady cool air, low wind, and good light. The standard runner window in most months.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in San Jose in August
The kit for August in San Jose: shorts and a short-sleeve are the standard kit.
August vs the surrounding months
vs July
+1° avg high
-1 rain days
San Jose in July →
August
84°F avg high
1 rain days
Best: morning
vs September
+1° avg high
-2 rain days
San Jose in September →
Frequently Asked Questions
What is the best time of day to run in San Jose in August?+
Morning. Comfortable conditions all day, but morning consistently delivers the best combination of cool air and clear skies.
What's the average temperature in San Jose in August?+
Average high 84°F, average low 60°F.
How does August compare to surrounding months in San Jose?+
Compared to July (avg high 84°F), August is warmer. Compared to September (avg high 83°F), August is warmer.
Does it rain often in San Jose in August?+
Expect about 1 measurable rain days in August, on average.