A San Diego RV rental is one of the best winter-sun ideas we know of. While the north is grey, Southern California is mild on the coast and pleasantly warm in the desert, which is exactly the opposite of the brutal inland heat of summer. For travellers coming from Europe it is also a clean, simple start: one pick-up point at San Diego airport, and a handful of world-class road trips within a day’s drive.

We are Joona & Alla, a couple based in Rovaniemi who spend plenty of winter planning where the sun is. This is a researched guide, not a diary of our own trip: we checked the CampervanPlanet San Diego page in October 2026, compared it with the wider USA market, and built the route we would pick for a first desert RV trip.

Books for Christmas and New Year fill up quickly, so it helps to decide early.

What a San Diego RV rental costs in winter and summer

CampervanPlanet publishes cheapest-available prices for a 7-night rental picked up and returned at San Diego airport (SND). In October 2026 they showed:

• November 2026: from $86 a day, a cheapest 7-night total of $598.
• March 2027: from $86 a day, again $598 for a week.
• June 2027: from $113 a day, a cheapest week of $790.

Those are “from” prices for the cheapest vehicle, so a larger family motorhome costs more. The wider USA index (updated 24 October 2026) gives a more typical picture: $104 a day in winter and $168 in summer, from $36, based on 36 vehicles from 7 companies. The rental companies with live prices from San Diego airport on the page were El Monte RV and Indie Campers.

The lesson is the same as everywhere: winter is cheaper than summer, and the weeks around Christmas and New Year are the exception. Our fuller breakdown of Los Angeles RV rental costs shows how extras like mileage, generator hours and kitchen kits add up. You can check live prices for your dates on CampervanPlanet’s San Diego page, and code HUNGRYTRAVELFAMILY20 takes €20 off at checkout.

Why winter is the right season for the desert

The San Diego page lays out the seasons clearly, and it fits what we would expect from the geography. December to February is described as the best season for Anza-Borrego and Joshua Tree, with mild coastal weather around 16–20°C, and Big Bear offering snow activities if you fancy mountains. Spring (March to May) brings wildflowers in Anza-Borrego and coastal temperatures of 20–24°C, with shoulder-season prices.

Summer is the opposite: the coast is busy and rates are highest, and the inland deserts are too hot to camp in comfortably. Autumn is a good second option: warm days, cooler nights and fewer tourists, with desert destinations becoming accessible again by late October.

If your dates are flexible, aim for January or late February to March. Avoid the Christmas–New Year week unless you book months ahead.

Day 1–2: pick up, shop and start on the coast

San Diego is a friendly place to begin because everything is close. Collect the RV at the airport pick-up, stock up on groceries, water and ice, and drive the short hop to the coast. Cabrillo National Monument, listed among the popular drives on the landing page, is a good first stop: views over the harbour, tide pools and a gentle introduction to driving a vehicle larger than you are used to.

Treat day one as a shake-down. Check the awning, the gas bottle, the water tank and how the beds convert. Ask the rental agent to walk you through each system; no one regrets asking for a second explanation of the toilet.

Day 3–4: Anza-Borrego Desert State Park

Anza-Borrego is California’s largest state park, and in winter it is superb: wide open skies, badlands and, after wet seasons, spring flowers. It is also a place where an RV pays for itself, because you can cook, sleep and warm up without relying on a hotel miles away.

Plan fuel and water carefully. Distances are long, services are sparse, and it is easy to underestimate how quickly a big vehicle burns fuel on desert roads. Fill up before you leave the last town, carry more water than you think you need, and tell someone your plan. Phone coverage in the desert is patchy, so download offline maps first.

If you want something more rugged later in the trip, our guide to one-way RV rental in the USA explains how to drop the vehicle somewhere else without a nasty fee.

Day 5–7: Joshua Tree National Park

Joshua Tree is the headline act. Its boulder-strewn landscapes, strange trees and very dark skies make it one of the best places in the USA for stargazing, and the page lists it among the popular drives from San Diego. Winter is the ideal season; summer heat is punishing.

Campsites in popular national parks can book out far ahead, and RV length limits apply at many of them, so check the maximum vehicle length before choosing your van. A smaller camper van may mean more campsite choices than a large Class C motorhome. If you are unsure, our guide to campervan vs motorhome vs RV explains the vehicle types.

Return towards the coast via Palomar Mountain State Park, another suggestion from the landing page, for a cooler, forested finish.

Costs beyond the rental: what to budget

For a week, plan on the rental itself, fuel, campsites, groceries, and a handful of sundry extras. US RV rentals often charge separately for mileage beyond an allowance, generator use, kitchen kits and bedding, so read the inclusions carefully and compare like for like, not just daily headlines. The typical campsite cost varies enormously between a basic public site and a full-hook-up RV park near the coast, which can be several times more expensive.

Insurance and deposits are worth understanding too. See our guide to insurance, deposits and excess before you book. And when you are ready, our reader coupon (code HUNGRYTRAVELFAMILY20) takes €20 off, which more than covers a couple of campsite nights in the desert.

Our verdict and who it suits

A San Diego RV rental suits anyone who wants a week or two of easy winter warmth and has never driven a motorhome in America. The roads are good, distances are manageable, and the contrast between coastal calm and desert silence is striking. It is less suited to travellers who hate planning: campsites and parks need booking, and you will want to think about vehicle length and fuel stops in the desert. For a bigger picture of the market, see our campervan rental guide.