Los Angeles Weather By Month: The Definitive 2026 Climate Guide

Planning a trip, outdoor event, or relocation to Southern California requires understanding the nuances of the local climate. While Los Angeles is globally famous for its perpetual sunshine and mild Mediterranean weather patterns, meteorological conditions fluctuate significantly across neighborhoods, microclimates, and seasons. This comprehensive 2026 guide breaks down the weather in Los Angeles month by month, detailing average temperatures, precipitation patterns, ocean conditions, and strategic advice for residents and travelers.

Understanding the Los Angeles Climate and Microclimates

The Los Angeles basin is governed by a Mediterranean climate (Köppen climate classification Csa), characterized by warm, dry summers and mild, occasionally wet winters. However, the region's topography—spanning coastal shores, flat basins, and steep mountain ranges like the Santa Monica and San Gabriel Mountains—creates distinct microclimates.

Coastal zones, such as Santa Monica and Malibu, experience marine layers (locally known as "May Gray" and "June Gloom") that keep morning temperatures cool. Conversely, inland valleys like the San Fernando Valley (Sherman Oaks, Woodland Hills) experience significantly higher summer highs and lower winter lows due to the absence of direct ocean cooling breezes.

• Coastal Zone: Moderate year-round temperatures with heavy morning fog during late spring and early summer.
• Basin and Downtown (DTLA): Balanced temperatures with warm summers and mild winters, serving as the climatic baseline for the city.
• Inland Valleys: Continental influence driving high summer heatwaves and crisp winter nights.
• Mountain Foothills: Cooler overall averages with occasional winter frost and localized winter precipitation.

Month-by-Month Weather Breakdown for Los Angeles

January: Crisp Winters and Peak Rainfall

January stands as one of the coldest months of the year in Los Angeles, though it remains remarkably mild by national standards. Average daytime highs hover around 68°F (20°C), while nighttime lows drop to a crisp 48°F (9°C). January also falls squarely within the region's primary rainy season, averaging about 3 to 4 inches of precipitation. While heavy downpours can cause localized urban flooding, rain events are typically interspersed with brilliant, crystal-clear post-storm days offering sweeping views of snow-capped local mountains.

February: Transitional Rains and Blooming Landscapes

February mirrors January's temperature profile with average highs of 69°F (21°C) and lows of 50°F (10°C). Rainfall remains a factor, historically accounting for some of the wettest single-day storms in the area. However, these winter rains trigger early botanical blooms across Griffith Park and the surrounding hillsides. Ocean water temperatures hit their annual minimum during this month, hovering around 57°F (14°C), making recreational swimming unadvisable without a thick wetsuit.

March: Warming Trends and Spring Transitions

March marks the beginning of meteorological spring in Southern California. Average highs climb to 70°F (21°C) and lows average 52°F (11°C). Rainfall frequency begins to taper off significantly compared to January and February, though occasional Pacific frontal systems still push through. Daylight saving time kicks in mid-month, extending evening sunlight and making late-afternoon outdoor activities increasingly pleasant.

April: The Onset of Reliable Sunshine

April weather is widely considered some of the most comfortable of the entire year. Average daytime highs reach 72°F (22°C) with overnight lows around 54°F (12°C). Rainfall becomes rare, and clear, sunny skies dominate. This month is ideal for hiking, sightseeing, and attending outdoor sporting events without battling the intense heat of mid-summer or the chill of winter.

May: Morning Gloom and Comfortable Afternoons

May introduces the seasonal marine layer phenomenon frequently referred to as "May Gray." Dense morning coastal fog and low clouds often blanket the basin until late morning, burning off by noon to reveal sunny skies. Average highs reach 73°F (23°C) along the coast and slightly higher inland, with lows around 57°F (14°C). This month offers a pleasant buffer before the intense summer tourist crowds arrive.

June: The Peak of "June Gloom"

June continues the overcast morning trend with "June Gloom," keeping coastal temperatures moderated. DTLA averages highs of 78°F (26°C), while inland valleys push well into the 80s°F (28°C+). Rainfall is virtually non-existent. Ocean temperatures begin a slow upward climb, reaching about 62°F (17°C), though surfers and beachgoers still rely on shorty wetsuits for extended water exposure.

July: The Beginning of Summer Heat

July brings reliably dry, sunny, and warm weather to Los Angeles. Morning cloud cover disappears quickly, and daytime highs in the basin average 84°F (29°C), while inland valleys routinely exceed 90°F (32°C) to 95°F (35°C). Nighttime lows provide comfortable relief, dropping to around 64°F (18°C). Humidity remains relatively low, making the heat manageable compared to humid subtropical climates.

August: Peak Summer Warmth and Ocean Comfort

August is historically one of the warmest months of the year in Los Angeles. Average daytime highs in DTLA peak around 85°F (29°C), with inland areas experiencing prolonged heatwaves. Ocean water temperatures reach their annual peak at approximately 68°F (20°C), making August and September the premier months for swimming, surfing, and beach activities along the Santa Monica Bay.

September: The Underrated Summer Extension

Locals often consider September to be the true highlight of the Southern California calendar. While mainland US schools reopen and summer crowds dissipate, LA experiences some of its warmest and clearest weather. Average highs remain high at 84°F (29°C), and offshore Santa Ana wind events can occasionally spike temperatures into the 90s°F. Ocean temperatures remain warm and inviting.

October: Mild Days and Santa Ana Wind Events

October brings a gradual cooling trend, with average daytime highs dropping to 79°F (26°C) and lows to 58°F (14°C). This month is characterized by the onset of Santa Ana winds—strong, dry offshore air masses blowing from the Great Basin desert down through mountain passes. These winds can rapidly elevate temperatures, lower humidity, and create high wildfire risk across regional brushlands.

November: Crisp Air and Rapidly Shorter Days

November transitions the city firmly into autumn. Daytime highs average 72°F (22°C), while nighttime lows drop to 52°F (11°C). Rainfall begins to return to the forecast, though totals remain modest. The end of daylight saving time in early November means sunset occurs shortly after 5:00 PM, shortening evening daylight hours significantly.

December: Winter Chill and Holiday Festivities

December is the coolest month of the year in Los Angeles, featuring average daytime highs of 68°F (20°C) and chilly nighttime lows averaging 48°F (9°C). Winter storms roll in from the Pacific, bringing occasional heavy rain and dusting the peaks of Mount Baldy and the San Gabriel Mountains with snow. Despite the cooler weather, sunny days remain frequent, offering crisp conditions for holiday events.

Annual Los Angeles Climate Overview Table

Frequently Asked Questions

What is the warmest month in Los Angeles?

August is historically the warmest month in Los Angeles, with average coastal and basin highs reaching 85°F (29°C) and inland valleys often exceeding 95°F (35°C). While July experiences similar high-pressure dominance, August sustains slightly warmer ocean temperatures and prolonged heat retention.

When does "June Gloom" happen in Los Angeles?

"June Gloom" typically spans from late May through early July, peaking throughout the month of June. This meteorological pattern produces persistent morning overcast skies, stratus clouds, and coastal fog driven by marine layer inversion layers before burning off by midday.

Does it ever rain in Los Angeles during the summer?

True summer rainfall in Los Angeles is exceedingly rare, with June, July, and August averaging less than 0.2 inches of cumulative precipitation combined. Rainfall is heavily concentrated between November and March.

Is the ocean warm enough for swimming in Los Angeles?

Ocean swimming is most comfortable during August, September, and early October when water temperatures peak between 66°F and 68°F (19°C–20°C). During winter and spring, water temperatures drop into the mid-50s°F, requiring wetsuits for extended water sports.

How do Santa Ana winds affect LA weather?

Santa Ana winds are strong, extremely dry offshore winds that originate in the Great Basin desert and accelerate westward through mountain passes. They typically occur between October and March, causing sudden temperature spikes, plummeting humidity levels, and extreme wildfire danger.

Strategic Planning and Travel Recommendations

To maximize your experience in Los Angeles, align your itinerary with your preferred weather conditions. If you prefer hiking, sightseeing, and moderate temperatures without intense heat, target the shoulder months of April, May, October, and November. If your priority is beach lounging, swimming, and reliable sunshine, book your activities between July and September. Always pack layers if you plan to visit coastal attractions or stay out past sunset, as evening temperatures across the Los Angeles basin drop rapidly once the sun dips below the horizon.