Yosemite weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Yosemite in September. Check more long-term weather averages for Yosemite in September before you book your next holiday to California in 2025/2026.

  • 18°C maximum daytime temperature in September in Yosemite18
    18°C max day temperature
  • 10 hours of sunshine per day
  • 5 days with some rainfall in September in Yosemite5
    5 days with some rainfall
  • 2°C minimum night-time temperature in September in Yosemite2
    2°C min night temperature
  • 12 hours of daylight per day in September in Yosemite12
    12 hours of daylight per day
  • No heat & humidity in September in Yosemite0
    No heat & humidity
  • 22 mm monthly rainfall in September in Yosemite22
    22 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Yosemite8
    8 (Very High) UV index

More about Yosemite

Yosemite by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for California

TUI: up to 7% off holidays booked online

  • Book online with TUI & save up to 7% on holidays
  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost
Go to TUI deal >>

View all TUI offers

TUITUI deal finder

The September weather guide for California (Yosemite) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about California

How hot is it in Yosemite in September?

Daytime temperatures usually reach 18°C in Yosemite in September, falling to 2°C at night.

How sunny is it in Yosemite in September?

There are normally 10 hours of bright sunshine each day in Yosemite in September - that's 80% of daylight hours.

Does it rain in Yosemite in September?

There are usually 5 days with some rain in Yosemite in September and the average monthly rainfall is 22mm.

Yosemite September sunrise & sunset times

Browse the sunrise and sunset times for Yosemite in September 2025. Select a month to view Yosemite sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:28 18:27
Monday, 15th September 2025 05:40 18:06
Tuesday, 30th September 2025 05:53 17:42

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^