San Luis in Winter
In winter (December, January and February), San Luis sees average daytime highs around 72°F and overnight lows near 50°F, with 1.2 in of rain over about 6 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Over the season highs climb from about 71°F in early December to 76°F by late February. The sky is clear or mostly clear about 62% of the time across winter, and the air most often feels dry.
Winter is San Luis's best season of the year to visit on our travel score. For the whole year in context, see San Luis's year-round climate.
- Avg daytime high
- 72°F
- coldest season of the year
- Avg overnight low
- 50°F
- Rainfall
- 1.2 in
- 6 wet days
- Avg wind
- 6 mph
- Travel score
- 8.4
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in San Luis in Winter
Over the season highs climb from about 71°F in early December to 76°F by late February.
A typical winter day in San Luis reaches about 72°F and drops to 50°F overnight. The warmest of the three months is February, the coolest December.
How winter really feels in San Luis
Once humidity and wind are folded in, winter brings about 0 days that feel above 90°F and 0 that feel at or below 32°F.
winter sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
San Luis 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 (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 71° / 49° | 0.4 | 1.5 | 10.1 | 8.4 |
| Feb | 74° / 52° | 0.5 | 2.3 | 10.8 | 8.6 |
| Mar | 81° / 56° | 0.4 | 1.5 | 11.8 | 8.1 |
| Apr | 87° / 61° | 0.1 | 0.6 | 12.8 | 6.1 |
| May | 95° / 68° | 0.0 | 0.2 | 13.6 | 3.5 |
| Jun | 103° / 75° | 0.0 | 0.2 | 14.1 | 0.7 |
| Jul | 106° / 83° | 0.2 | 1.5 | 13.9 | 0.0 |
| Aug | 106° / 84° | 0.4 | 2.9 | 13.2 | 0.0 |
| Sep | 101° / 78° | 0.5 | 2.2 | 12.2 | 1.2 |
| Oct | 91° / 67° | 0.2 | 0.9 | 11.2 | 4.9 |
| Nov | 78° / 56° | 0.2 | 0.8 | 10.3 | 8.6 |
| Dec | 69° / 48° | 0.4 | 1.7 | 9.9 | 8.2 |
Cloud cover in Winter
The sky is clear or mostly clear about 62% of the time across winter.
Chance of precipitation in Winter
San Luis gets around 1.2 in of rain over 6 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 6 mph 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 3.9 kWh/m².
Is winter a good time to visit San Luis?
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 one of the better times to visit San Luis for general sightseeing.
What to pack for San Luis in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, San Luis sees daytime highs around 72°F and nights near 50°F. Worth packing: light clothes and sun protection. About 6 days see rain.
UV index in San Luis 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 San Luis peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 | 9 | 6 | 4 | 3 |
| Level | Moderate | Moderate | Moderate | Very high | Very high | Extreme | Extreme | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 5 | Moderate |
| Apr | 8 | Very high |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 10 | Very high |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Where is San Luis?
San Luis sits at 32.5°N, 114.8°W, 131 ft above sea level, in United States. The nearest listed city is San Luis Río Colorado, 2.5 mi away.
Topography around San Luis
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of San Luis.
Within 2 miles, the terrain around San Luis has only modest variations in elevation — a maximum elevation change of 89 ft around an average of 118 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 180 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,652 ft.
The land around San Luis is covered by artificial surfaces (46%), bare terrain (26%) and cropland (24%) within 2 miles, bare terrain (45%) and cropland (41%) within 10 miles, and bare terrain (73%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- 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 San Luis (32.487°, -114.7822°, elevation 131 ft), 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.