Late summer · Weather & things to do
Pasadena in August
Pasadena's warmest month brings highs averaging 88°F (31°C), lows of 65°F (19°C) and less than 0.1 in (3 mm) of rain.
Its comfort score of 84/100 is still Good, though it ranks 12th of 12 here.
- Avg high
- 88°F (31°C)
- Avg low
- 65°F (19°C)
- Rain
- less than 0.1 in (3 mm)
- Humidity
- 49%
- Cloud cover
- 14%
- Daylight
- ~13 h 17 min
- Comfort score
- 84/100 · Great
What August feels like
Afternoons run hot at about 88°F (31°C), which leaves mornings and evenings as the time for walking.
Mornings start much cooler: lows average 65°F (19°C), about 12°C (22°F) below the afternoon high.
Rain is scarce: less than 0.1 in (3 mm) for the whole month.
Clear skies are common, with cloud cover averaging only 14%.
Plan around August
August is one of the lower-scoring months here; the best are March – June and October & November.
- Comfort holds steady from July (86 → 84/100).
- Our Los Angeles New Year's Eve route is planned for Dec 30 – Jan 1, a window set by the holiday season rather than the weather — August falls outside it.
What to pack for August
- Light, breathable clotheshighs average 88°F
- Sunscreen, sunglasses and a hatstrong sun this month
- Refillable water bottleeasy to dehydrate in the heat
- A warm layer for eveningsnights drop to 65°F
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Pasadena in August
Afternoons run hot (88°F), so these picks mix early-start outdoor spots with cool indoor breaks.
Pasadena City Hall
Domed 1927 Spanish Revival city hall with a fountain courtyard open to visitors.
The Raymond 1886
Seasonal American cooking in the former caretaker's cottage of the vanished Raymond Hotel, with a garden patio.
Why now August scores 84/100 for comfort, good conditions for being outside.
Colorado Street Bridge
Curved 1913 concrete arch bridge over the Arroyo Seco, with a walking path along the stream bed below.
Why now Highs near 88°F and 0.0 in of monthly rain make this an easy outdoor pick.
Floatfest
The parked floats, close enough to see the seeds, petals and bark they are covered in, on Sierra Madre Boulevard.
Pie 'n Burger
Counter diner near Caltech since 1963, known for griddled burgers, pancakes and fruit pies by the slice.
Why now A break from 88°F afternoons.
Nearby in August
- Los Angeles in August~9 mi · highs 90°F, 0.0 in rain · 1°C (2°F) warmer by day, about as wet
- Hollywood in August~11 mi · highs 89°F, 0.0 in rain · similar daytime temperatures, about as wet
- Santa Barbara in August~91 mi · highs 82°F, 0.0 in rain · 3°C (5°F) cooler by day, about as wet
- Palm Springs in August~94 mi · highs 108°F, 0.3 in rain · 11°C (20°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Pasadena in August: quick answers
Is August a good time to visit Pasadena?
It's one of the tougher months here, scoring 84/100, held back mainly by heat. The best months are March – June and October & November. Expect highs of 88°F (31°C) and less than 0.1 in (3 mm) of rain.
How hot is Pasadena in August?
Average highs are 88°F (31°C) and average lows 65°F (19°C), making it the warmest month by daytime highs.
Does it rain a lot in Pasadena in August?
Not much: less than 0.1 in (3 mm) of rain falls across August on average, the driest month of the year. The annual total is about 13.1 in (332 mm).
What should I pack for Pasadena in August?
Bring light, breathable clothes (highs average 88°F), sunscreen, sunglasses and a hat (strong sun this month), refillable water bottle (easy to dehydrate in the heat), a warm layer for evenings (nights drop to 65°F) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Planning Pasadena in August?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.