Across the year, daylight in Los Angeles ranges from about 9h 44m in December to 14h 16m in June — a 4h 33m swing that shapes sleep, mood and training rhythms. From roughly late December to January, the sun sits too low for much vitamin D production.
Los Angeles is part of the Greater Los Angeles; the nearest other Live10X guide is Santa Monica, about 14 miles away.
Los Angeles by the numbers
- County
- Los Angeles County
- Climate
- Mediterranean
- Elevation
- under 500 ft
- Latitude
- 34.1°N
- Shortest day
- 9h 44m
- Longest day
- 14h 16m
- Vitamin D winter
- Late December to January
- Metro
- Greater Los Angeles
At a glance
Los Angeles at a glance
- Top local priority in Los Angeles: year-round outdoor movement.
- Daylight swings from about 9h 44m to 14h 16m across the year — anchor your wake time and get morning light.
- Sunlight is too weak for much vitamin D production from roughly late December to January; a blood test shows where you stand.
- Use Griffith Park and Runyon Canyon Park for easy, regular outdoor movement.
Climate & lifestyle
What living in Los Angeles means for your health
Los Angeles has a Mediterranean-type climate: mild, damp winters and long, dry summers with plenty of sunshine. It's one of the easiest climates in the country for year-round outdoor training — the main watch-outs are summer UV, midsummer heat inland and smoky days in wildfire season.
- year-round outdoor movement
- daily sun protection
- air-quality awareness in fire season
- consistent sleep through long summer evenings
Light, sleep & vitamin D
Daylight in Los Angeles across the year
9h 44m
Shortest day (December)
14h 16m
Longest day (June)
~1 mo
Low-UVB “vitamin D winter”
At about 34.1°N, Los Angeles sees a 4h 33m swing in day length between the solstices. UVB is weakest in midwinter, but midday sun can still support vitamin D production most of the year. That's roughly late December to January. Bright morning light helps anchor your body clock, and a simple blood test shows whether your vitamin D is where it should be.
Calculated from latitude using standard solar formulas and published latitude research. How we calculate this
Local wellness trends
Wellness trends in Los Angeles
Year-round outdoor training
Mild weather means Los Angeles's runners, cyclists and outdoor bootcamps rarely need an off-season.
Mind-body wellness
Yoga studios, meditation groups and a creative culture support stress resilience in Los Angeles.
Food culture & personalized nutrition
Los Angeles's food scene puts farmers markets and diverse cuisines within reach, fueling interest in gut health and nutrigenomics.
Coastal trails & ocean swims
Coastal trail runs and cold ocean swims connect Los Angeles's residents to the Pacific.
Local health optimization resources
Places to move, recover and eat well in Los Angeles
- ParkGriffith ParkGreen space for walks, bodyweight workouts and time in nature.
- TrailRunyon Canyon ParkCar-free miles for zone 2 walks, runs and rides.
- Trailthe LA River bike pathCar-free miles for zone 2 walks, runs and rides.
Testing
At-home wellness genetic testing
Available throughout Los Angeles: order online, collect a sample at home and review results with a qualified professional.
Learn more about at-home wellness genetic testingHealthcare
Preventive care & baseline labs
Primary care clinicians in Los Angeles County can order baseline labs — such as a lipid panel, HbA1c, vitamin D and B12 — useful context for any wellness plan.
Learn more about preventive care & baseline labsNutrition
Farmers markets & local food
Los Angeles's food scene makes it easier to eat 30+ different plants a week — shop seasonal produce at local farmers markets.
Learn more about farmers markets & local foodRecovery
Sauna & recovery studios
Gyms, spas and recovery studios around Los Angeles offer sauna and cold plunge — look for clean facilities and clear safety guidance.
Learn more about sauna & recovery studiosSeasonal playbook
A seasonal wellness playbook for Los Angeles
- Winter: mild temperatures keep outdoor training on track — the rainy season rarely derails a well-planned week.
- Summer: strong sun and dry heat inland — train early, use sunscreen and hydrate well.
- Late summer and fall: check air-quality forecasts during wildfire season and move hard workouts indoors on smoky days.
- Year-round: day length only varies by about 4h 33m, so a consistent sleep schedule is easy to hold — protect it.
Recommended reading
The most relevant guides for Los Angeles residents
FAQ
Los Angeles wellness FAQs
Can I take a wellness genetic test in Los Angeles?
Is Los Angeles's climate good for year-round training?
Can you get enough vitamin D from the sun in Los Angeles?
How do seasonal daylight changes in Los Angeles affect sleep?
What are good places to exercise outside in Los Angeles?
The bottom line
Living well in Los Angeles means working with its mild, wet winters and dry, sunny summers: year-round outdoor movement, daily sun protection and air-quality awareness in fire season. Add the fundamentals — consistent sleep, daily movement, strength training and a whole-food diet — and personalize with the wellness assessment and at-home testing.
