The best times to visit San Alfonso for ideal weather are

February 19th to April 15th


October 15th to December 23rd

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other San Alfonso Travel Info

Weather in San Alfonso


Average temperatures in San Alfonso vary greatly. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 57th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit San Alfonso, the hottest months are January, February, and then December. See average monthly temperatures below. The warmest time of year is generally early to mid January where highs are regularly around 89.3°F (31.8°C) with temperatures rarely dropping below 56.9°F (13.8°C) at night.

San Alfonso Temperatures (Fahrenheit)


San Alfonso Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

San Alfonso Perceived Temperature (F)


San Alfonso Perceived Temperature (C)



Average San Alfonso Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 88 71.6 57.1
Feb 86.9 70 55.8
Mar 84.7 67.1 53.2
Apr 77.5 59.6 47.2
May 69.5 53.5 43.6
Jun 63.6 48.3 38.9
Jul 62.1 47.2 38.2
Aug 64.9 49.9 40.3
Sep 70.3 54.7 44.3
Oct 75.9 59.7 47.3
Nov 81.6 64.4 50.4
Dec 85.5 68.5 53.7

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 31.1 22 13.9
Feb 30.5 21.1 13.2
Mar 29.3 19.5 11.8
Apr 25.3 15.3 8.4
May 20.8 11.9 6.4
Jun 17.6 9.1 3.8
Jul 16.7 8.4 3.4
Aug 18.3 9.9 4.6
Sep 21.3 12.6 6.8
Oct 24.4 15.4 8.5
Nov 27.6 18 10.2
Dec 29.7 20.3 12.1



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in San Alfonso are January, December, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid June with an average of 1 days of significant precipitation the week of June 18th.

When can you find snow in San Alfonso? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in San Alfonso.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in San Alfonso (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 0% 0 0
Feb 1% 0 0.1
Mar 1% 0 0.1
Apr 1% 0 0.1
May 9% 0 1.7
Jun 13% 0 2.1
Jul 8% 0 1
Aug 11% 0 2.1
Sep 5% 0 0.6
Oct 3% 0 0.4
Nov 1% 0 0.1
Dec 0% 0 0.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 0 0 0
Feb 1 0 0.3
Mar 1 0 0.3
Apr 1 0 0.3
May 9 0 4.3
Jun 13 0 5.3
Jul 8 0 2.5
Aug 11 0 5.3
Sep 5 0 1.5
Oct 3 0 1
Nov 1 0 0.3
Dec 0 0 0.3


Humidity and Wind

San Alfonso has some humid months, and slightly dry months in the opposite season. The least humid month is December (38.2% relative humidity), and the most humid month is July (66.1%).

Wind in San Alfonso is usually extremely calm. The windiest month is January, followed by December and November. January’s average wind speed of around 3 knots (3.4 MPH or 5.5 KPH) is considered “light air.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early December where average top sustained speeds reach 7.3 knots, which is considered a gentle breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in San Alfonso.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 3 Barely noticeable 6.6 Light breeze
Feb 2.6 Barely noticeable 6.3 Light breeze
Mar 2.1 Barely noticeable 5.6 Light breeze
Apr 1.5 Barely noticeable 4.3 Light breeze
May 0.9 Still 3.1 Light breeze
Jun 0.8 Still 2.7 Barely noticeable
Jul 0.9 Still 2.8 Light breeze
Aug 1.2 Barely noticeable 3.8 Barely noticeable
Sep 1.7 Barely noticeable 4.6 Light breeze
Oct 2.2 Barely noticeable 5.6 Light breeze
Nov 2.7 Barely noticeable 6.2 Light breeze
Dec 3 Barely noticeable 6.9 Light breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 38.9%
Feb 40.3%
Mar 43.1%
Apr 50.7%
May 62%
Jun 65.2%
Jul 66.1%
Aug 62.8%
Sep 57.1%
Oct 48.1%
Nov 40.8%
Dec 38.2%


Is it Safe to Travel to San Alfonso?

Our best data indicates this area is somewhat safe. As of Dec 04, 2023 there are travel warnings for Chile; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Dec 04, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in San Alfonso, Chile is November, followed by September and December. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit San Alfonso in May. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 19.4 in May means 19.4% of the tourists vs. November.



Overall San Alfonso Travel Experience by Season

Fall (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 86.6°F (30.3°C) and 65.9°F (18.8°C) with colder temperatures in the later months. Rain is rare with 0 to 3 days of significant precipitation per month. Fall is fairly slow for tourism, which makes it a good time for those looking for deals.

Winter (June through August)

The middle-year months have cold weather with high temperatures that are brisk. These months see the most precipitation with 2 to 4 days of precipitation per month. June – August is the slowest season for tourism in San Alfonso, so lodging and other accommodations may cost less than usual.

Spring (September through November)

Spring daily highs range from 82.9°F (28.3°C) and 68.2°F (20.1°C), which will feel comfortable given the humidity and wind. It rains or snows a normal amount: 0 to 2 days per month. Tourism is the busiest during these months due to the weather, so hotels may be higher priced.

Summer (December through February)

Weather is perfect this time of year in San Alfonso to be enjoyable for warm weather travelers. The average high during this season is between 89.3°F (31.8°C) and 84.5°F (29.2°C). On average, it rains or snows a insignificant amount: consistently 0 times per month. These times of year are the second busiest with tourists.


Best Times to TravelChile › San Alfonso, Chile