Summer
Dec → Feb- 7 rainy days · 74 mm
- 11.9 h of sun
In short: November to March for Patagonia and its glaciers, in the height of the southern summer; May to September for the North-West (Salta, Jujuy), dry and mild in winter. March, April, October and November are the best compromise for a full trip, with 21 to 26 °C in Buenos Aires and fewer crowds in the South than in January.
Best avoided: June to August for Patagonia (outside skiing): short days, cold, and some of the refuges, roads and lake crossings closed, just when the North-West is at its best.
Sources: argentina.travel, peninsulavaldes.org.ar
RecommendedFairNot recommended· afternoon temperature
| Month | High | Low | Sunshine | Rainfall | Rainy days | Best |
|---|---|---|---|---|---|---|
| January | 29° | 21° | 12 h | 75 mm | 8 d | |
| February | 28° | 20° | 11.4 h | 79 mm | 7 d | |
| March | 26° | 19° | 10.5 h | 167 mm | 9 d | ✓ |
| April | 21° | 15° | 8.5 h | 99 mm | 8 d | ✓ |
| May | 17° | 10° | 7.6 h | 48 mm | 4 d | |
| June | 15° | 8° | 7.5 h | 36 mm | 7 d | |
| July | 14° | 7° | 7.5 h | 43 mm | 6 d | |
| August | 16° | 9° | 8.1 h | 59 mm | 6 d | |
| September | 18° | 11° | 9 h | 63 mm | 6 d | |
| October | 21° | 13° | 10.1 h | 66 mm | 7 d | ✓ |
| November | 25° | 17° | 11.5 h | 92 mm | 8 d | ✓ |
| December | 27° | 19° | 12.4 h | 67 mm | 7 d | ✓ |
What the 2015-2024 records (Buenos Aires) show, season by season, to compare at a glance instead of reading twelve rows of a table.
The timing is right, so it is right for everyone: in these months the best places to stay and the small-group tours go first. Here is where to start.
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The time between sunrise and sunset, from shortest to longest. Not to be confused with the sunshine hours in the table above, which count clear skies. In December there are 14h28 of daylight, in June 9h51, a difference of 4h37.
Calculated for the latitude of the reference point "Buenos Aires" (-34.60°). Values on the 15th of each month, local solar time.
EventsGualeguaychú CarnivalJanuary to FebruaryVendimia FestivalMarchTango World ChampionshipAugustSouthern right whales at Península ValdésJune to DecemberDetails ↓
favourablewith compromisesunfavourable
Hiking: good conditions all twelve months.
Towns & culture: good conditions all twelve months.
Grid derived from the records (temperature, rainfall), not from an opinion.
What comes back every year, and when. One of these events fills the hotels and pushes prices up: something to aim for or to avoid, depending on what you want.
In Entre Ríos, comparsas parade through the corsódromo every weekend in January and February, much like a sambadrome.
Mendoza celebrates the grape harvest in early March, with a night-time show at the Greek theatre and the election of a queen.
Buenos Aires hosts the world tango championship in August, with milongas, open classes and hugely popular finals.
Southern right whales come to calve in the gulfs of Valdés from June to December, peaking in the southern spring.
A country's best time is an average, and it hides big differences. Here is what the records say for each area, month by month: ✓ for a recommended month, ~ for a fair one, a dot for a month to avoid. Hover over a cell for the temperature.
| Area | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 🇦🇷 Iguazú Falls | · | · | ~ | ✓ | ✓ | ~ | ~ | ✓ | ✓ | ~ | · | · |
| 🇦🇷 Buenos Aires | · | ~ | ✓ | ✓ | ~ | · | · | · | ~ | ✓ | ✓ | ~ |
| 🇦🇷 El Calafate and the Perito Moreno Glacier | ✓ | ✓ | ✓ | ~ | · | · | · | · | · | ~ | ✓ | ✓ |
| 🇦🇷 Ushuaia | ✓ | ✓ | ✓ | ~ | · | · | · | · | · | ~ | ✓ | ✓ |
| 🇦🇷 Patagonia | ✓ | ✓ | ✓ | ~ | · | · | · | · | · | ~ | ✓ | ✓ |
Iguazú FallsBest time: April to May and August to SeptemberWhen to visit Iguazú Falls →The Iguazú Falls guide
Buenos AiresBest time: March to April and October to NovemberWhen to visit Buenos Aires →The Buenos Aires guideLow season, lower prices
Low season, lower prices
High season, book early
Busy, without the crush
Low season, lower prices
Low season, lower prices
Busy, without the crush
Busy, without the crush
Low season, lower prices
Busy, without the crush
Busy, without the crush
High season, book early
January. 29 °C in the afternoon and 21 °C at night. Expect 8 days of rain in the month (75 mm). Plenty of sunshine: 12 h a day on average. Low season: fewer people, lower prices.
February. 28 °C in the afternoon and 20 °C at night. Rain stays light: 79 mm over 7 days. Plenty of sunshine: 11.4 h a day on average. Low season: fewer people, lower prices.
March. 26 °C in the afternoon and 19 °C at night. Expect 9 days of rain in the month (167 mm). Plenty of sunshine: 10.5 h a day on average. High season: book early.
April. Mild, 21 °C in the afternoon and 15 °C early in the morning. Expect 8 days of rain in the month (99 mm). Expect 8.5 h of sunshine a day. Busy season, without the crush.
May. Cool: 17 °C at best, 10 °C at night. Rain stays light: 48 mm over 4 days. Expect 7.6 h of sunshine a day. Low season: fewer people, lower prices.
June. Cool: 15 °C at best, 8 °C at night. Rain stays light: 36 mm over 7 days. Expect 7.5 h of sunshine a day. Low season: fewer people, lower prices.
July. Cool: 14 °C at best, 7 °C at night. Rain stays light: 43 mm over 6 days. Expect 7.5 h of sunshine a day. Busy season, without the crush.
August. Cool: 16 °C at best, 9 °C at night. Rain stays light: 59 mm over 6 days. Expect 8.1 h of sunshine a day. Busy season, without the crush.
September. Mild, 18 °C in the afternoon and 11 °C early in the morning. Rain stays light: 63 mm over 6 days. Plenty of sunshine: 9 h a day on average. Low season: fewer people, lower prices.
October. Mild, 21 °C in the afternoon and 13 °C early in the morning. Rain stays light: 66 mm over 7 days. Plenty of sunshine: 10.1 h a day on average. Busy season, without the crush.
November. 25 °C in the afternoon and 17 °C at night. Expect 8 days of rain in the month (92 mm). Plenty of sunshine: 11.5 h a day on average. Busy season, without the crush.
December. 27 °C in the afternoon and 19 °C at night. Rain stays light: 67 mm over 7 days. Plenty of sunshine: 12.4 h a day on average. High season: book early.
Their best time overlaps with this one: worth comparing before you book.
November to March for Patagonia and its glaciers, in the height of the southern summer; May to September for the North-West (Salta, Jujuy), dry and mild in winter. March, April, October and November are the best compromise for a full trip, with 21 to 26 °C in Buenos Aires and fewer crowds in the South than in January.
June to August for Patagonia (outside skiing): short days, cold, and some of the refuges, roads and lake crossings closed, just when the North-West is at its best.
January, with 29 °C on average in the afternoon and 21 °C at night. 2015-2024 records (Buenos Aires).
July, with 14 °C at best during the day and 7 °C at night. 2015-2024 records (Buenos Aires).
June: 36 mm over 7 days of rain, against 167 mm in March, the wettest month.
December, with 12.4 h of sunshine a day on average. Note that this counts clear skies, not the length of the day.
Photos: Eleanore Stohner / Pexels · Ema Reynares / Pexels · Miguel Cuenca / Pexels · Eugenio Felix / Pexels · Jimmy Liao / Pexels · Tomas Anunziata / Pexels