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September in Anaheim is warm, sunny, and almost entirely dry — summer at its most settled, with highs near 85°F and lows around 66°F. With only about 1 rainy day for the entire month, it's peak Southern California outdoor weather. Light summer clothes and a layer for air-conditioned theme parks are all you need.
Planning a visit to Anaheim in September means preparing for classic Southern California sunshine and warmth. This month sees average daytime temperatures comfortably ranging from the mid-80s to low 90s Fahrenheit (29-34°C), ensuring plenty of bright, sunny hours for exploring. While the days are often hot, evenings bring a welcome drop in temperature, typically settling into the mid-60s Fahrenheit (18-20°C) after sunset. Humidity levels are generally moderate, making the air feel pleasant, not overly oppressive. Precipitation is highly unlikely; September is firmly within the region's dry season, so you can expect clear skies almost daily. For practical outfit advice, think breathable fabrics and strategic layering. During the day, prioritize lightweight materials like cotton, linen, or moisture-wicking blends. Shorts, skirts, light dresses, and t-shirts are ideal for navigating theme parks or enjoying outdoor attractions. As the sun sets and the air cools, a light jacket, cardigan, or a denim jacket becomes essential to stay comfortable, especially if you're dining outdoors or waiting for nighttime spectaculars. Comfortable walking shoes are non-negotiable, given the extensive walking involved in most Anaheim itineraries. Don't forget a hat, sunglasses, and ample sunscreen to protect against the strong Southern California sun.
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What to Pack for Anaheim in September →
For Anaheim in September, pack lightweight and breathable clothing suitable for warm to hot days, such as shorts, skirts, t-shirts, and light dresses. Due to cooler evenings, which drop to the mid-60s Fahrenheit, a light jacket, cardigan, or long-sleeved top is essential for comfortable layering after sunset or in air-conditioned venues.
Anaheim in September is generally not cold. Daytime temperatures are typically warm to hot, ranging from the mid-80s to low 90s Fahrenheit (29-34°C). Evenings become pleasant and mild, cooling to the mid-60s Fahrenheit (18-20°C), which feels refreshing but not cold enough to warrant heavy outerwear.
Rain in Anaheim during September is very rare. This month is part of Southern California's prolonged dry season, so you can expect predominantly clear skies and abundant sunshine. There's a minimal chance of precipitation, meaning an umbrella is typically unnecessary for your trip.
Pack for warm days and mild evenings: include lightweight tops, shorts, skirts, or light dresses for daytime activities. Bring a light jacket, cardigan, or a denim jacket for comfort during cooler nights. Essential accessories include comfortable walking shoes, a wide-brimmed hat, sunglasses, and strong sunscreen to combat the intense sun.
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