In March, San Diego averages highs of 68°F and lows of 54°F with about 6 rainy days — mild Southern California coastal weather with morning marine layer and pleasant afternoons. Balboa Park's 1,200 acres of gardens and museums are excellent in March's comfortable temperatures before summer crowds. A light jacket for mornings handles the coastal marine layer; the afternoons are warm enough for light fabrics.
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top / Short-Sleeve Top
classic tee
bottom / Jeans
straight-leg
chinos for a slightly smarter look
footwear / Waterproof Boots
ankle boots
rubber sole for traction — keep feet dry all day
outerwear / Rain Jacket
shell jacket
waterproof or DWR-treated — keep it packable
Based on typical March conditions in San Diego. Weather varies year to year — check the live forecast when you're within two weeks of your trip.
San Diego in March offers a delightful transition from winter chill to spring warmth, making it an excellent time to visit, though packing strategically is key. You can expect daytime temperatures to comfortably range from the mid-60s to low 70s Fahrenheit (18-22°C), perfect for exploring the city's beautiful coastline and vibrant neighborhoods. However, evenings and early mornings can be significantly cooler, often dropping into the low 50s (10-12°C). While March generally signals the tail end of the rainy season, sporadic light showers are still possible, so don't rule out a drizzle. The defining weather pattern is often a mix of brilliant sunshine and occasional "May Gray"-like marine layers, especially closer to the coast in the mornings. The key to comfortable fashion in San Diego in March is versatile layering. Think light jackets, cardigans, or stylish sweaters over breathable t-shirts or long-sleeved tops. Jeans, chinos, or comfortable travel pants are ideal for daytime activities, complemented by walking shoes for strolls along the beach or through Balboa Park. For evenings, a slightly warmer sweater or a light trench coat will be appreciated. Don't forget sunglasses for sunny afternoons and a scarf for added warmth if you plan to be out after sunset. Embrace casual chic with an emphasis on adaptability.
A black blazer over an ivory blouse and pleated maxi skirt in warm rain is complete formal coverage. Black mule heels are the practical formal choice when espadrilles are off the table.
A black longline parka over a crewneck sweatshirt in warm rain has a deliberateness that works. Ivory satin mules and a cream beanie are the contrasts that make it.
A black rain jacket over ivory linen trousers refuses to look sloppy in warm rain. Espadrilles and a crochet bucket hat keep the warm-weather mood alive below the waterline.
A light wash denim jacket over a denim mini skirt makes a strong case for double denim in warm rain. The black square neck top underneath adds structure.
A blush cropped jacket over a white linen blouse and ivory wide-leg trousers refuses to look heavy in warm rain. Tortoiseshell cat-eye sunglasses are the editorial punctuation.
A white linen blazer over matching wide-leg linen trousers and a blue collarless blouse stays entirely polished through warm rain. Slide sandals and gold aviators make it feel like summer despite the drizzle.
A yellow hooded rain jacket over biker shorts and a longline tee handles warm rain with high-visibility attitude. Ivory pointed-toe mules are the surprising finishing note.
Packing layers is essential for San Diego in March due to fluctuating temperatures throughout the day. Opt for a mix of light long-sleeved tops, t-shirts, a versatile sweater or cardigan, and a light jacket. Comfortable walking shoes are a must, along with jeans or chic casual pants, and perhaps a casual dress for warmer afternoons.
San Diego is not typically cold in March, with pleasant daytime temperatures often reaching the mid-60s to low 70s Fahrenheit. However, mornings and evenings can be quite cool, dropping into the low 50s. Therefore, it's wise to pack layers to stay comfortable as temperatures shift.
While March marks the end of San Diego's wetter season, occasional light rain showers are still possible. It's generally not a very rainy month, but packing a light, packable umbrella or a water-resistant jacket is a sensible precaution. Most days will likely be dry and sunny, even if starting with a marine layer.
For San Diego in March, pack versatile layers including t-shirts, long-sleeved tops, a sweater or cardigan, and a light jacket. Bring comfortable walking shoes, jeans, shorts or casual pants, and sunglasses. Don't forget a small umbrella or a light rain jacket just in case, and a scarf for cooler evenings.
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