Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Pasadena is from May, June, October. — consistent weather climate
☀️Pleasant
| Score | 68 | 74 | 74 | 90 | 94 | 98 | 64 | 62 | 74 | 96 | 93 | 73 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Cool & rainy | Mild | Cool & rainy | Mild | Pleasant | Pleasant | Pleasant | Pleasant | Pleasant | Pleasant | Mild | Mild |
| Temperature | 8–18°C | 8–19°C | 8–20°C | 10–23°C | 12–24°C | 15–28°C | 17–32°C | 18–32°C | 17–31°C | 15–28°C | 11–23°C | 8–18°C |
| Feels like | 5–16°C | 5–17°C | 6–19°C | 9–23°C | 11–24°C | 15–29°C | 19–33°C | 19–34°C | 18–31°C | 13–27°C | 8–20°C | 5–16°C |
| Precipitation | 109mm 7 days | 90mm 7 days | 103mm 11 days | 28mm 5 days | 14mm 4 days | 4mm 2 days | 3mm 1 days | 10mm 1 days | 15mm 2 days | 14mm 3 days | 29mm 3 days | 88mm 6 days |
| Sunshine | 8.3h ☀︎ 82% | 9.1h ☀︎ 83% | 10.2h ☀︎ 85% | 11.5h ☀︎ 88% | 12.5h ☀︎ 90% | 13.4h ☀︎ 93% | 13.7h ☀︎ 97% | 12.7h ☀︎ 95% | 11.5h ☀︎ 93% | 10.5h ☀︎ 93% | 9.5h ☀︎ 91% | 8.3h ☀︎ 83% |
| Wind | NE · 11 km/h | NE · 12 km/h | S · 14 km/h | S · 14 km/h | S · 14 km/h | S · 13 km/h | S · 13 km/h | S · 14 km/h | S · 13 km/h | S · 12 km/h | NE · 11 km/h | NE · 11 km/h |
| Humidity (%) | 60% | 55% | 63% | 60% | 68% | 64% | 61% | 59% | 58% | 51% | 44% | 52% |
| Day length | 10.2h | 11.0h | 12.0h | 13.1h | 14.0h | 14.4h | 14.2h | 13.4h | 12.4h | 11.3h | 10.4h | 9.9h |
The Rose Parade on New Year's Day is Pasadena's signature event, drawing hundreds of thousands of spectators to watch el…
The Pasadena Chalk Festival transforms the Paseo Colorado district into an open-air gallery as artists create large-scal…
Pasadena is world-famous for a single morning in January when rain risks and suffocating crowds peak together, yet its genuine sweet spot hides in October, when summer's stifling foothill heat breaks and the city empties out into effortless autumn calm.
To most of the world, Pasadena exists as a postcard broadcast on New Year's morning: brilliant California sunshine, marching bands, and flower-carpeted floats gliding along wide boulevards while the rest of North America shivers under snow. But that televised fantasy masks an awkward reality. January is the city's most congested, logistically relentless month, sharing calendar space with sudden Pacific stormfronts that dump drenching rain over the San Gabriel Valley. The real Pasadena—the gracious, tree-lined cultural redoubt set against dramatic mountain ridges—reveals its best self when the television cameras are elsewhere. If you follow conventional weather charts, you would book June. If you want the city at its absolute finest, you go in October.
Standard travel metrics will tell you that early summer holds the best conditions of the year, but pure weather ratings ignore how a place actually lives. October is where Pasadena reaches perfection. By early autumn, the relentless inland baking of late summer has dissipated, leaving afternoons that settle into an easy, golden warmth and evenings that carry a brisk, crisp bite down from the mountains.
More importantly, you have the sidewalks to yourself. While June draws heavy throngs of early summer travellers, October registers some of the lowest foot traffic of the year. You can stroll through Old Pasadena without dodging tour groups, find open benches under the jacarandas, and take in the historic brick facades in peace. There is barely any rain to speak of, just day after day of clear blue skies and dry, temperate air that invites long walks from morning until dusk.
November maintains that tranquil rhythm for most of the month. The daylight shrinks, and the evenings turn cool enough to demand a proper coat, but the atmosphere remains remarkably gentle. It is an introspective, romantic chapter in the valley—relaxed, luminous, and comfortably free of the circus to come.
Winter in Pasadena revolves entirely around the spectacle of New Year's Day. The Rose Parade brings hundreds of thousands of spectators to line Colorado Boulevard before dawn, wrapped in blankets to claim curbside views for the floral floats and marching bands. Paired with the gridiron pilgrimage to the Rose Bowl, January represents the absolute peak of the city's annual footprint. The energy is undeniable, electric, and communal, but it demands patience. The town operates at total capacity, sidewalks are jammed, and navigating anywhere near the central corridor requires meticulous advance planning.
What the broadcast cameras do not show is that midwinter is also Pasadena's wettest, most temperamental season. The mountains trap incoming Pacific weather systems, turning gentle coastal showers into torrential foothill downpours that can soak the basin for days. When the rain clears, the crisp air provides jaw-dropping vistas of snow-dusted peaks rising behind the tile roofs, but you are gambling with the forecast.
February and March quiet down substantially, but the rain lingers in intermittent bursts. Between storms, the days are fresh and clean, hovering in the mild upper teens, making it an atmospheric time to visit if you don't mind carrying an umbrella and planning museum visits around afternoon showers.
Spring arrives swiftly in the San Gabriel Valley. By April, the winter storms retreat, giving way to weeks of mild, bright afternoons and blooming gardens. May brings an even softer warmth, perfectly tuned for patio lunches and wandering residential lanes shaded by live oaks. Foot traffic remains moderate, making late spring an exceptionally easy window for exploring.
June marks the climatic apex of the season. The sun is out for more than thirteen hours a day, rain vanishes almost entirely, and the city takes full advantage of the dry warmth. Over one summer weekend, the Pasadena Chalk Festival takes over the Paseo Colorado district, transforming everyday walkways into a sprawling, vibrant street gallery where pavement artists create stunning temporary murals.
The catch with June is that everyone knows it is beautiful. Crowds swell significantly, lines lengthen, and the breezy intimacy of the spring months gives way to a busy, energetic hum. If you relish lively streets and guaranteed dry warmth, June delivers without fail; just be prepared to share the pavement with crowds that mirror midsummer beach towns.
By July, the geography of the basin catches up with Pasadena. Tucked inland beneath the mountain ridge, the city heats up significantly faster than coastal Los Angeles. Midday temperatures climb well into the thirties, and the radiant heat bouncing off concrete sidewalks and brick architecture can feel punishing between noon and late afternoon.
August is the heaviest, hottest stretch of the year. The humidity remains generally low, but apparent temperatures can feel oppressive, flattening outdoor ambition until the sun dips behind the western hills. The city's pulse slows down out of sheer necessity; locals retreat indoors during the heat of the day, emerging only when long twilight shadows bring relief.
September retains much of this summer heat, with hot breezes and sunbaked afternoons lingering well past the equinox. However, crowd levels drop sharply as schools resume, creating a curious window: the streets are pleasantly empty, but daytime walking requires deliberate shade-seeking and a slow, forgiving pace until October arrives to sweep the heat away.
California Republic · United States of America
California Republic · United States of America
California Republic · United States of America