Rosarito in Winter
In winter (December, January and February), Rosarito sees average daytime highs around 16°C and overnight lows near 12°C, with 168 mm of rain over about 17 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Across winter, daytime highs hold fairly steady around 16°C. The sky is clear or mostly clear about 49% of the time across winter, and the air most often feels dry.
Winter is Rosarito's weakest season of the year to visit on our travel score. For the whole year in context, see Rosarito's year-round climate.
- Avg daytime high
- 16°C
- coldest season of the year
- Avg overnight low
- 12°C
- Rainfall
- 168 mm
- 17 wet days
- Avg wind
- 11 km/h
- Travel score
- 5.8
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Rosarito in Winter
Across winter, daytime highs hold fairly steady around 16°C.
A typical winter day in Rosarito reaches about 16°C and drops to 12°C overnight. The warmest of the three months is December, the coolest January.
Rosarito weather by month
How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 16° / 12° | 56 | 5.5 | 10.1 | 5.9 |
| Feb | 16° / 12° | 69 | 6.3 | 10.8 | 5.5 |
| Mar | 16° / 12° | 43 | 5.2 | 11.8 | 5.8 |
| Apr | 17° / 13° | 18 | 3.2 | 12.8 | 6.6 |
| May | 18° / 14° | 7 | 1.5 | 13.6 | 7.3 |
| Jun | 19° / 16° | 1 | 0.2 | 14.1 | 8.1 |
| Jul | 21° / 18° | 1 | 0.2 | 13.9 | 8.6 |
| Aug | 22° / 19° | 0 | 0.1 | 13.2 | 9.0 |
| Sep | 22° / 18° | 3 | 0.5 | 12.2 | 8.8 |
| Oct | 21° / 17° | 13 | 2.1 | 11.2 | 8.2 |
| Nov | 19° / 14° | 20 | 3.1 | 10.3 | 7.4 |
| Dec | 16° / 12° | 44 | 5.2 | 9.9 | 6.0 |
Cloud cover in Winter
The sky is clear or mostly clear about 49% of the time across winter.
Chance of precipitation in Winter
Rosarito gets around 168 mm of rain over 17 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 11 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 hours in early December to 11 h 12 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 3.6 kWh/m².
Is winter a good time to visit Rosarito?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Rosarito for sightseeing.
What to pack for Rosarito in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Rosarito sees daytime highs around 16°C and nights near 12°C. Worth packing: a warm layer. About 17 days see rain.
Sea temperature near Rosarito in Winter
The nearest coast averages about 16°C across winter — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 15 | 16 | 16 | 17 | 18 | 20 | 21 | 21 | 19 | 18 | 16 |
| Comfort | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Cool |
| Feb | 15 | Cool |
| Mar | 16 | Cool |
| Apr | 16 | Cool |
| May | 17 | Cool |
| Jun | 18 | Cool |
| Jul | 20 | Refreshing |
| Aug | 21 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 19 | Cool |
| Nov | 18 | Cool |
| Dec | 16 | Cool |
UV index in Rosarito in Winter
Clear-sky midday UV across winter averages 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 5 | 8 | 8 | 11 | 11 | 10 | 8 | 6 | 4 | 3 |
| Level | Moderate | Moderate | High | Very high | Very high | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 5 | High |
| Apr | 8 | Very high |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 10 | Extreme |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Air quality in Rosarito in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 11 | 10 | 9 | 6 | 9 | 8 | 9 | 16 | 33 | 13 | 17 |
| Level | Good | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 11 | Good |
| Mar | 10 | Good |
| Apr | 9 | Good |
| May | 6 | Good |
| Jun | 9 | Good |
| Jul | 8 | Good |
| Aug | 9 | Good |
| Sep | 16 | Moderate |
| Oct | 33 | Moderate |
| Nov | 13 | Moderate |
| Dec | 17 | Moderate |
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.
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
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.