Get the app
Best time to visit · California, United States
On the climate data, the best time to visit Pasadena is March – June and October & November, scoring up to 100/100 with highs around 76°F (24°C) and 0.4 in (9 mm) of rain in May. December – February are good shoulder-season months. The toughest months are July – September, mainly because of heat.
Highs run from 64°F to 88°F across the year, and the yearly total is about 13.1 in (332 mm) of rain.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 65°F18°C | 65°F18°C | 68°F20°C | 71°F22°C | 76°F24°C | 82°F28°C | 87°F30°C | 88°F31°C | 86°F30°C | 79°F26°C | 71°F22°C | 64°F18°C |
| Avg low | 46°F8°C | 46°F8°C | 49°F9°C | 51°F10°C | 55°F13°C | 59°F15°C | 65°F18°C | 65°F19°C | 64°F18°C | 58°F15°C | 52°F11°C | 46°F8°C |
| Rain | 2.9 in73 mm | 3.0 in75 mm | 1.7 in42 mm | 0.7 in19 mm | 0.4 in9 mm | 0.0 in1 mm | 0.1 in2 mm | 0.0 in1 mm | 0.1 in3 mm | 0.7 in17 mm | 1.0 in25 mm | 2.6 in65 mm |
| Humidity | 59% | 63% | 64% | 63% | 62% | 57% | 52% | 49% | 50% | 52% | 53% | 58% |
| Cloud | 42% | 42% | 40% | 35% | 29% | 21% | 17% | 14% | 17% | 25% | 33% | 42% |
| Comfort | 92 | 92 | 96 | 98 | 100 | 98 | 86 | 84 | 88 | 100 | 99 | 92 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. The grid cell sits at about 395 m (1,296 ft), close to Pasadena's own ~263 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs near 64°F (18°C) and lows down to 46°F (8°C). It's the wettest season, with about 8.4 in (213 mm) of rain, 64% of the year's total. December – February score well without being the very best (season average 92/100).
Temperatures climb through the season, from 68°F highs in March to 76°F by May. About 2.8 in (70 mm) of rain falls across these months, 21% of the year's total. Lows bottom out around 49°F (9°C). Comfort peaks here: March – May rank with the year's best, and the season averages 98/100.
The warmest stretch of the year, with highs of 82–88°F (28–31°C). It's the driest season, with only about 0.2 in (4 mm) of rain, 1% of the year's total. Lows bottom out around 59°F (15°C). June is among the best-scoring months (season average 89/100).
Temperatures slide from 86°F highs in September to 71°F by November. About 1.8 in (45 mm) of rain falls across these months, 14% of the year's total. Lows bottom out around 52°F (11°C). Comfort peaks here: October & November rank with the year's best, and the season averages 96/100.
By comfort score: 12 Great. Tap a month for its own guide.
On the climate data, the best time to visit Pasadena is March – June and October & November, scoring up to 100/100 with highs around 76°F (24°C) and 0.4 in (9 mm) of rain in May. December – February are good shoulder-season months. The toughest months are July – September, mainly because of heat.
February is the wettest month, averaging about 3.0 in (75 mm) of rain. June is the driest, with less than 0.1 in (3 mm). The yearly total is around 13.1 in (332 mm).
December is the coldest, with average lows of 46°F (8°C) and highs of 64°F (18°C). The warmest is August, with average highs of 88°F (31°C).
Not very: summer (June – August) humidity averages 53%, and highs peak around 88°F (31°C), so heat matters more than mugginess.
The wettest three-month stretch is December – February, with about 8.4 in (213 mm) of rain combined. The driest stretch is June – August, with about 0.2 in (4 mm).
Share this with your crew, run a quick poll on dates in TripsCircle, then build the itinerary, packing list and shared costs in one place.
