Rosarito in January: Weather, Sea Temperature, Crowds and a Two-Day Itinerary

ROSARITO · JANUARY · BAJA CALIFORNIA

January on the Rosarito coast is a month for walking the oceanfront in mild air and looking at a Pacific that is too cold for most people to swim in. Afternoons are pleasant, mornings and evenings call for a layer, and the month reads almost the same as the one before it and the one after.

Rosarito sits on the Tijuana-Ensenada toll highway, the Scenic Highway, so a January weekend is a coastal drive with three names at the end of it: the main beach, the fishing village of Popotla, and Baja Studios, built for the filming of Titanic.

On this page

• Rosarito weather in JanuaryHighs, lows, rain days and daylight from the SMN normals
• Can you swim in Rosarito in January?Sea at 59.7°F, and what that means in the water
• How busy is Rosarito in January?Crowds, booking and the 5% hotel lodging tax
• Things to do in Rosarito in JanuaryThe main beach, Popotla and Baja Studios
• Rosarito itinerary for JanuaryTwo days, with a rain plan
• Rosarito in January vs December and FebruaryHighs, rain and sea temperature for three months
• Is January a good time to visit Rosarito?Yes for walks, no for swimming

Every figure here comes from the Presa Rodriguez station (SMN 02038), an inland reservoir near Tijuana, about 9 miles from the coast at 120 meters of elevation. Rosarito’s own beachfront is not separately measured and likely runs milder, with more coastal fog, so read the numbers as the nearest official record.

Rosarito weather in January

For January, Mexico’s national weather service (Servicio Meteorologico Nacional, part of CONAGUA) gives an average high of 69.4°F, an average low of 46.9°F and 2.04 inches of precipitation over the month. These are 1991-2020 normals from a measuring station, number 02038 at Presa Rodriguez, the reading closest to Rosarito.

Measurable rain falls on 6.8 days in an average January by SMN’s own count, slightly more than one day in five. The station sheet does not publish its threshold for a rain day, so weigh that count against U.S. tallies with care. A light shell in the bag covers it, and one indoor plan held in reserve takes care of a wet morning.

Between the 69.4°F afternoon and the 46.9°F night sits a swing of 22.5 degrees. Pack for both: a sweatshirt or fleece for dinner and the evening drive, short sleeves for the afternoon walk, closed shoes for the cooler hours. The coast likely runs milder than the station, and fog can hold a morning gray.

On January 15 the day lasts about 10 hours 18 minutes. The sun rises at 6:48 a.m. and sets at 5:06 p.m., Pacific time, converted from the sunrise-sunset.org calculation. Put the beach walk in the middle of the day and get off the highway before dusk.

Can you swim in Rosarito in January? Sea temperature

Off Rosarito the sea surface averages 59.7°F in January, from the Open-Meteo Marine API over 2015-2024. That figure is a mean of daily maxima, so it runs a shade warmer than a 24-hour average would.

At 59.7°F the water suits a wade to the knees for most visitors. Serious swimmers will want a wetsuit, and everyone else can spend the afternoon on the sand, where the air reaches 69.4°F.

We found no verified January wind or swell record for Rosarito, so we give none. Check a marine forecast on the morning you plan to get in the water.

How busy is Rosarito in January? Crowds and prices

We found no occupancy series and no monthly room-rate series for Rosarito, so we rank no month by price or crowd. The one thing we can back with data is the weather: January sits in the middle of a three-month stretch where highs stay between 68.7°F and 69.4°F.

We have no verified booking-lead data for Rosarito, so we give no number of weeks. A refundable rate costs nothing to ask for and lets you move the dates by a month, which the comparison below shows is a small change in weather.

Baja California’s lodging tax (Impuesto sobre Servicios de Hospedaje) is 5% for hotels and 7% for moteles in 2026, and a 5% rate is also set for digital booking platforms. The source is the Ley de Hacienda del Estado de Baja California, with the 2026 rates confirmed by El Contribuyente and J.A. Del Rio.

If you spend extra anywhere in January, spend it on the room. Nights fall to 46.9°F, and morning fog is a fair bet at the beachfront, so a warm bed matters more than an ocean view the fog may hide.

Things to do in Rosarito in January

The month’s offer is a full day outside in comfortable air: walking weather on the oceanfront and in Popotla, and a Pacific to admire from the sand. Swimming is the one plan January does not support.

The main beach runs along the town’s oceanfront and is the destination’s principal draw. Popotla, the nearby fishing village, sits close by. Baja Studios was built in 1997 by 20th Century Fox as Fox Studios Baja for the filming of Titanic (announced in 1996, with local press estimating the build cost at around 20 million dollars) and stands on the coast at Rosarito.

What January changes at these spots is the air: afternoons near 69.4°F, nights at 46.9°F and a sea holding near 59.7°F. Sand time belongs to the afternoon. Popotla and the studio suit a cooler morning, with the fleece still on.

We could not verify what any of these three places charges, or their January hours, so we quote no fee and no opening time. Call or check the operator’s own listing before you drive down.

Rosarito itinerary for January

Day one belongs to the oceanfront and Popotla. Sunrise is at 6:48 a.m. and the coast can start in fog, so keep the early hours slow: breakfast, then a walk along the main beach as the air warms toward its 69.4°F afternoon high. Go to Popotla after lunch and be back on the oceanfront before the 5:06 p.m. sunset. If you arrive on the Tijuana-Ensenada toll highway, do it in daylight.

Day two starts at Baja Studios, since we could not verify its January hours and you will want to confirm them first. Spend the afternoon back on the sand or the oceanfront. If rain arrives (6.8 days of it in an average January), swap the order: studio in the wet hours if it is open, coast in the dry ones.

Rosarito in January vs December and February

January’s average high of 69.4°F sits beside December’s 68.7°F and February’s 69.3°F, with lows of 46.9°F against 46.4°F and 47.3°F. Rain is where the three months part ways: 1.75 inches and 6.3 rain days in December, 2.04 and 6.8 in January, 2.53 and 7.5 in February, which makes February the wettest of the three at 2.53 inches. The sea falls from 60.1°F to 59.7°F to 58.8°F.

Moving four weeks earlier to December buys a slightly drier month, 1.75 inches against 2.04, and water 0.4 degrees warmer. Moving to February brings 2.53 inches and 7.5 rain days, and the sea slips to 58.8°F, 0.9 degrees below January. We found no event dates or price series for any of the three months, so weather is the only gain or loss we can measure.

Is January a good time to visit Rosarito?

Yes for oceanfront walks, Popotla and a studio visit in comfortable afternoon air. No for swimming or a full day of sunbathing: the sea is 59.7°F and the fog on the beachfront can outlast a morning.

If the answer is no for you, the three months we measured offer little rescue, since December’s sea reads 60.1°F. A warm swim means a different month, and our where-to-go guides by month are the place to start.

January’s offer is a steady one: highs of 69.4°F, a beach walk once the fog lifts, and nearly the same air a month either side, so a date that slips by four weeks costs you little in warmth.

The last word

The U.S. State Department lists Baja California at Level 3, Reconsider Travel, for terrorism, crime, and kidnapping, in an advisory reissued May 29, 2026. It cites high homicide numbers in the non-tourist areas of Tijuana, and names Mexicali Valley as the only place in the state with travel restrictions. Read it in full before you book, then pack the fleece and be off the road before the 5:06 p.m. sunset.

Sources & data for this guide

• Air temperature, precipitation and rain days, January, December and February · Servicio Meteorologico Nacional (CONAGUA), normales climatologicas 1991-2020, station 02038 (Presa Rodriguez, Tijuana) · checked Sep 30, 2026
• Sea surface temperature, mean of daily maxima 2015-2024 · Open-Meteo Marine API · checked Sep 30, 2026
• Daylight and sunrise/sunset on January 15 · sunrise-sunset.org, converted to Tijuana time · checked Sep 30, 2026
• Baja Studios history · local press (eSpiral TV, June 15, 2026; Wikipedia “Baja Studios”), corroborated by the municipal government of Playas de Rosarito · checked Sep 30, 2026
• Lodging tax · Ley de Hacienda del Estado de Baja California, chapter V, with 2026 rates confirmed by El Contribuyente and J.A. Del Rio · checked Sep 30, 2026
• Travel advisory · U.S. Department of State, Mexico Travel Advisory (reissued May 29, 2026), State of Baja California · checked Sep 30, 2026
• We could not verify admission fees, opening hours, event dates, occupancy or room rates for Rosarito, so none appear · confirm with operators when you book.