Rosarito weather in January

In January, Rosarito sees average daytime highs of 16°C and overnight lows near 12°C, with 56 mm of rain across 5.5 wet days and about 10.1 hours of daylight. It is the 10th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 16°C through the month. The sky is clear or mostly clear about 51% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 54 min at the start of January to 10 h 24 min by month's end. Set against the rest of the year, January is Rosarito's 10th-clearest and 9th-windiest month. For the whole year in context, see Rosarito's year-round climate.

Daytime high
16°
10th warmest
Overnight low
12°
2nd coldest
Rainfall
56 mm
5.5 wet days
Daylight
10 h 06 min
6:55 AM – 5:00 PM
Cloud cover
43%
10th clearest
Wind
11 km/h
9th windiest
Solar energy
3.42 kWh/m²
Travel score
5.9
out of 10

Rosarito is municipal seat of Rosarito, State of Baja California, Mexico.

Founded
1885

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 16°C through the month.

A typical January day in Rosarito reaches about 16°C in the afternoon and slips back to 12°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 19°C. Set against its neighbours, January runs on par with December and on par with February.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
11612
21612
31612
41612
51612
61612
71612
81612
91612
101612
111612
121612
131612
141612
151612
161612
171612
181612
191612
201612
211612
221612
231612
241612
251612
261612
271612
281612
291612
301612
311612

Rosarito weather by month

How January compares with the rest of the year at a glance. January is the 10th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan16° / 12°565.510.15.9
Feb16° / 12°696.310.85.5
Mar16° / 12°435.211.85.8
Apr17° / 13°183.212.86.6
May18° / 14°71.513.67.3
Jun19° / 16°10.214.18.1
Jul21° / 18°10.213.98.6
Aug22° / 19°00.113.29.0
Sep22° / 18°30.512.28.8
Oct21° / 17°132.111.28.2
Nov19° / 14°203.110.37.4
Dec16° / 12°445.29.96.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26436
36436
46436
56436
66436
76436
86337
96436
106436
116436
126535
136535
146535
156535
166535
176535
186535
196535
206634
216634
226634
236634
246634
256634
266634
276634
286733
296733
306733
316733

Chance of precipitation in January

Any precipitation

Rosarito gets around 56 mm of rain over 5.5 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 17% and peaks near 19% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
118
219
319
419
519
619
719
818
918
1018
1118
1217
1317
1416
1516
1616
1716
1816
1916
2016
2116
2216
2316
2417
2517
2617
2717
2817
2918
3018
3118

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the dry band about 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1973
2973
3973
4964
5964
6964
7964
8964
9955
10955
11955
12955
13955
14955
15955
16955
17955
18964
19964
20964
21964
22964
23964
24973
25973
26973
27973
28973
29973
30973
31973

Wind in January

Winds average 11 km/h in January.

Across January, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 54 min at the start of January to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over January. Sunrise moves from 6:54 AM to 6:49 AM, and sunset from 4:49 PM to 5:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.96:544:49
29.96:544:49
39.96:544:50
49.96:554:51
59.96:554:51
610.06:554:52
710.06:554:53
810.06:554:54
910.06:554:54
1010.06:554:55
1110.06:554:56
1210.06:554:57
1310.06:554:58
1410.16:554:59
1510.16:554:59
1610.16:555:00
1710.16:555:01
1810.16:545:02
1910.16:545:03
2010.26:545:04
2110.26:545:05
2210.26:535:06
2310.26:535:06
2410.26:535:07
2510.36:525:08
2610.36:525:09
2710.36:515:10
2810.36:515:11
2910.46:505:12
3010.46:505:13
3110.46:495:14

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 3.42 kWh/m².

For context, solar energy here swings from a low near 3.2 kWh/m² to a high of 7.85 kWh/m² in June across the year — January's 3.42 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.3Moderate
23.3Moderate
33.3Moderate
43.3Moderate
53.3Moderate
63.3Moderate
73.3Moderate
83.3Moderate
93.3Moderate
103.3Moderate
113.3Moderate
123.4Moderate
133.4Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.5Moderate
183.5Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.6Moderate
233.6Moderate
243.6Moderate
253.7Moderate
263.7Moderate
273.7Moderate
283.8Moderate
293.8Moderate
303.8Moderate
313.8Moderate
Planning a trip in January

Is January a good time to visit Rosarito?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.9
Sightseeing
10th-best month of the year
0.8
Beach & pool
10th-best month of the year

January is a reasonable time to visit Rosarito for sightseeing.

What to pack for Rosarito in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Rosarito sees daytime highs around 16°C and nights near 12°C. Worth packing: a warm layer. About 6 days see rain.

a warm layer

Sea temperature near Rosarito in January

The nearest coast averages about 15°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 21°C and coldest in February near 15°C.

It's comfortable for a long swim from Jul 18 to Sep 29 — about 2.4 months when the water holds above 20°C.

14°16°18°20°22°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb15Cool
Mar16Cool
Apr16Cool
May17Cool
Jun18Cool
Jul20Refreshing
Aug21Refreshing
Sep21Refreshing
Oct19Cool
Nov18Cool
Dec16Cool

UV index in Rosarito in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rosarito peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 11Dec 17UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Rosarito in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Rosarito is worst in October — around 33 µg/m³ PM2.5 (moderate), about 5.4× the cleanest month (May, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateOct 1631 µg/m³May 176 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar10Good
Apr9Good
May6Good
Jun9Good
Jul8Good
Aug9Good
Sep16Moderate
Oct33Moderate
Nov13Moderate
Dec17Moderate
Location & terrain

Where is Rosarito?

Rosarito sits at 32.4°N, 117.0°W, 46 m above sea level, in Mexico. The nearest listed city is Pórticos de San Antonio, 9.0 km away.

Topography around Rosarito

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rosarito.

Within 3 km, the terrain around Rosarito has only modest variations in elevation — a maximum elevation change of 174 m around an average of 58 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 725 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,966 m.

The land around Rosarito is covered by artificial surfaces (39%) and grassland (37%) within 3 km, water (45%) and grassland (30%) within 16 km, and water (38%) and shrubs (27%) within 80 km.

3 km
174 m
16 km
725 m
80 km
1,966 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Pórticos de San Antonio 9.0 km · Villa del Prado 2da Sección 10 km · La Joya 10 km · Las Delicias 11 km · Tijuana 16 km · Terrazas del Valle 25 km · Imperial Beach 26 km · Chula Vista 31 km

Mexico travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 / 127 V · 60 Hz
Prices
≈ 54% of US
price level, 2025
GDP per capita
$13,889
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
12.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 440
Religion
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Rosarito (32.3604°, -117.0464°, elevation 46 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).