Pack for a wide temperature swing, no cell signal and a long day on grass: layers, cash, a printed or screenshotted ticket, comfortable shoes, sun protection and a warm jacket for after sunset.
The short list
For a December day at the Yuletide Medieval Festival in Lakeside, or any outdoor winter festival in inland San Diego County, these are the essentials:
- Ticket confirmation, printed or screenshotted (no cell signal at the park).
- Cash, plus a card as backup.
- Layers: T-shirt, warm mid-layer, jacket.
- Comfortable closed shoes for a day on grass.
- Sunscreen, sunglasses and a hat.
- A rain layer.
- Water bottle.
- A warm hat, gloves and a flashlight if you are staying after dark on a Saturday.
What the weather is usually like
Inland San Diego County has a big daily temperature swing in December. NOAA’s 1991-2020 climate normals for El Cajon, the nearest long-running station to Lakeside, put the normal high on December 5 at about 70°F and the normal low at about 42°F, easing to about 68°F and 41°F by December 13. The December monthly normal rainfall is 1.83 inches, so a wet day is possible but not typical.
In practice, that means a midday that can feel like spring in the sun and an evening that feels properly wintry. The sun sets around 4:41 pm, according to the U.S. Naval Observatory, and it is dark by about 5:10 pm. Normals are long-term averages, so check the National Weather Service forecast for Lakeside a day or two before you go.
Clothing: dress in layers
- Base: a breathable T-shirt or long-sleeve top.
- Middle: a fleece or sweater you can tie around your waist at noon.
- Outer: a jacket that blocks wind, ideally water-resistant.
- Shoes: closed, broken-in shoes or boots. You’ll be on grass all day, and it may be damp in the morning or after rain.
- Evening extras: a warm hat, gloves and a scarf. Saturdays run until 8 pm, more than three hours after sunset.
- If you’re in costume: make sure it works with a warm layer underneath and shoes you can walk in.
Money and tickets without a signal
There is no cell coverage at El Monte County Park. That affects more than texting:
- Print or screenshot your emailed ticket confirmation before you leave home; you’ll show it at the gate.
- Bring cash. ATMs are on site, but vendors may not be able to take cards if the festival Wi-Fi goes down.
- Download or screenshot directions and your parking details.
- Agree on a meeting spot with your group, such as the Guest Services booth at the entrance.
- Write down key numbers on paper, including (858) 864-0020 for the festival.
Day bag extras
- Sunscreen and sunglasses: the December sun is low and bright.
- Reusable water bottle.
- Hand sanitizer and tissues (hand-wash stations and flush toilets are on site).
- A small flashlight or headlamp for after dark.
- A compact blanket or sit pad for the grass.
- A tote for marketplace purchases.
- A portable phone charger: cameras drain batteries fast even without signal.
- Any medications. A First Aid tent is on site for anything more.
What to leave at home
- Outside alcohol: alcohol is sold only by permitted providers.
- Fireworks.
- Smoking supplies, unless you are happy to use the lot across the street, the only place smoking is allowed.
- Anything you’d hate to lose in a crowd.
- Unsure about outside food or props? Those rules aren’t published, so call or email first.
Accessibility and comfort
- Accessible parking is available on request: email info@yuletidemedievalfestival.com before your visit.
- Flush toilets, portable ADA toilets and hand-wash stations are on site.
- The festival is on grass, so consider how a wheelchair, walker or stroller will handle soft or damp ground.
- A folding stool or small cushion helps if you want to sit through the jousting or a storytelling session.
- Guest Services is at the park entrance, and there’s a First Aid tent on site.
Plan your layers around the day
Morning arrivals often start in a jacket, shed it by late morning, and want it back by 4 pm as the sun drops. Keep the warm layer in your bag rather than the car: with off-site shuttle parking, a trip back to the car is not quick.
If you’re bringing kids or a dog
Children feel the evening chill sooner than adults, so pack an extra layer and a hat for each child. Dogs are welcome on a leash no longer than 6 feet; bring water, a bowl and a towel for damp grass. There are dog waste bag stations throughout.
Questions
How cold does it get in Lakeside in December?
NOAA’s 1991-2020 normals for nearby El Cajon put early-December lows at about 42°F and highs near 69°F. Expect mild sun at midday and cold evenings after sunset, which is around 4:41 pm.
Do I need cash at the festival?
Yes, bring some. There’s no cell coverage at the park, there are ATMs on site, and vendors may not take cards if the festival Wi-Fi goes down.
Will the festival go ahead if it rains?
Yes, it runs rain or shine. Pack a rain layer and shoes that can handle wet grass.
Can I bring my own drinks?
Outside alcohol isn’t allowed; alcohol is sold only by permitted providers. Rules on other outside food and drink aren’t published, so call or email the festival before you go.
Sources
- U.S. Climate Normals 1991-2020, daily: El Cajon, CA (USC00042706), December 5-13, NOAA National Centers for Environmental Information
- U.S. Climate Normals 1991-2020, monthly: El Cajon, CA (USC00042706), NOAA National Centers for Environmental Information
- Sun and Moon Data for One Day: Lakeside, CA, December 5, 2026, U.S. Naval Observatory
- El Monte County Park, San Diego County Parks and Recreation






