30YearWeather
Los Angeles in September
Los Angeles weather in September - United States
☀️Hot & Sunny

Los Angeles Weather in September

Plan your September trip to Los Angeles, United States. Based on 30 years of NASA data, expect temperatures of 31°C (high) to 17°C (low), with 2% rain probability and 8 hours of daily sunshine. The Pacific Ocean averages 21°C in September. Great conditions with only 0 rainy days expected.

Avg High
31°C

Hottest around day 4

Avg Low
17°C

Coolest around day 30

Rainy Days
0days

2% avg rain chance

Sunshine
8hrs/day

Autumn season

Sea Temperature in September

Pacific Ocean

21.1°C

Monthly Average

Water Feel
🏊Pleasant

Comfortable for most swimmers

Swim Rating
👍Good for swimming

Based on average sea surface temperature

Body of Water
Pacific Ocean

Los Angeles coastline

Los Angeles September Weather Calendar

Click any day to see detailed weather information

Currency

USD

$ United States dollar

Language

English

Driving

Right side

Connect

Internet cafes are spread around town an...

Safety

Moderate Safety

GPI: 2.44

Travel Intelligence

Exclusive flight analytics & health data for Los Angeles

Smart Flight Estimator

Airport-to-Airport Logistics

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Add your home location in settings to see airport details.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Major Hub
92/ 100
Traffic Index

Extremely busy airport

Peak Daily Arrivals

0

slots per day

Peak

Aug

Low

Jan

Monthly Traffic Distribution

676
Jan
707
Feb
767
Mar
760
Apr
826
May
840
Jun
826
Jul
840
Aug
822
Sep
734
Oct
688
Nov
755
Dec
Traffic Level
Low Season

Key Connections

San Francisco (SFO)
New York John F Kennedy (JFK)
Las Vegas McCarran (LAS)
Seattle Tacoma (SEA)
Phoenix Sky Harbor (PHX)

Health & Safety Advisory

CDC travel health recommendations

No Requirements

No Special Vaccinations Required

Standard travel precautions apply

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Los Angeles?

👌Good option with minor considerations
Short Answer

Storm season alert for Los Angeles in September: beyond the 31°C, 2% rain averages, hurricane risk requires travel insurance and schedule flexibility.

Decision Factors

Eastern Pacific Hurricane season active

Eastern Pacific zone - expect potential eastern pacific hurricane activity

Peak tourist season

98% of annual peak - expect crowds and peak prices

Excellent dry conditions

Only 2% rain probability - ideal for outdoor activities

Plenty of sunshine

10.9h of sunshine daily

Exceptional dining scene

159 Michelin-listed restaurants

Good For

  • 👨‍👩‍👧‍👦
    Families with children

    Comfortable 30.5°C temperatures and low 2% rain risk

  • 📸
    Photographers

    10.9h sunshine, 76% clear skies for golden hour shots

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💑
    Honeymoon couples

    Wedding score 100/100 with romantic weather conditions

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

Who Should Avoid

  • 💰
    Budget travelers

    Peak season means premium prices everywhere

  • 💼
    Business travelers

    Storm season may cause flight disruptions

  • 🌡️
    Heat-sensitive visitors

    34°C feels-like temperature creates discomfort

900 observations30-year historical data
Confidence: 99%

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Los Angeles in September averages 31°C with 2% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Los Angeles in September

What are the temperatures in Los Angeles in September?

Daytime highs average 31°C, nights drop to 17°C. There's a significant day/night temperature swing.

How many rainy days in Los Angeles in September?

Expect around 0 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Los Angeles in September?

Light, breathable fabrics. Don't forget sunglasses and a hat.

Is September peak season in Los Angeles?

This is shoulder season—moderate prices and manageable crowds.