The best times to visit San Telmo for ideal weather are
February 26th to June 3rd
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
San Telmo Travel Guide
Other San Telmo Travel Info
Weather in San Telmo
Average temperatures in San Telmo vary greatly. Considering humidity, temperatures feel very enjoyable all year with a fair chance of precipitation about half of the year. The area is somewhat temperate — in the 53rd 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 Telmo, the hottest months are January, February, and then December. See average monthly temperatures below. The warmest time of year is generally late December where highs are regularly around 85.5°F (29.7°C) with temperatures rarely dropping below 70.7°F (21.5°C) at night.
San Telmo Temperatures (Fahrenheit)
San Telmo Temperatures (Celsius)
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 Telmo Perceived Temperature (F)
San Telmo Perceived Temperature (C)
Average San Telmo 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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in San Telmo are June, July, and then May. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early June. For example, on the week of June 4th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late October to early November with an average of 2 days of significant precipitation the week of October 29th.
When can you find snow in San Telmo? 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 Telmo.
Snow on the Ground
The graph below shows the average snow on the ground in San Telmo (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
San Telmo has some high humidity months, with other comfortably humid months. The least humid month is December (56.3% relative humidity), and the most humid month is May (68.3%).
Wind in San Telmo is usually moderate. The windiest month is September, followed by November and October. September’s average wind speed of around 9.8 knots (11.2 MPH or 18.1 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid December where average top sustained speeds reach 18.4 knots, which is considered a fresh breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in San Telmo.
The graph below shows wind speed (max and average) in knots.
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||9.5||Gentle breeze||17.6||Strong breeze|
|Feb||8.9||Gentle breeze||17||Strong breeze|
|Mar||8.2||Gentle breeze||15.2||Strong breeze|
|Apr||7.4||Gentle breeze||13.7||Significant breeze|
|May||7||Gentle breeze||12.4||Strong breeze|
|Jun||7.3||Gentle breeze||13||Significant breeze|
|Jul||7.6||Gentle breeze||13.4||Strong breeze|
|Aug||8.2||Gentle breeze||14.3||Significant breeze|
|Sep||9.8||Gentle breeze||16.7||Strong breeze|
|Oct||9.6||Gentle breeze||16.9||Significant breeze|
|Nov||9.7||Gentle breeze||16.9||Strong breeze|
|Dec||9.3||Gentle breeze||17.1||Strong breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to San Telmo?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Argentina; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 24, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in San Telmo, Argentina is January, followed by February and October. 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 Telmo in June. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall San Telmo Travel Experience by Season
Fall (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 81°F (27.2°C) and 62.7°F (17.1°C) with colder temperatures in the later months. Rain is somewhat common with 4 to 6 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 least precipitation with 3 to 5 days of precipitation per month. June – August is the slowest season for tourism in San Telmo, so lodging and other accommodations may cost less than usual.
Spring (September through November)
Spring daily highs range from 80.6°F (27°C) and 65.8°F (18.8°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: approximately 6 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.
Summer (December through February)
Weather is perfect this time of year in San Telmo to be enjoyable for warm weather travelers. The average high during this season is between 85.5°F (29.7°C) and 79.3°F (26.3°C). On average, it rains or snows a fair amount: 4 to 6 times per month. These times of year are the busiest with tourists.