Weather by month for Mendoza, the best months to go and how Argentina's regions differ, scored from 10 years of climate data.
Feb, Mar
The highest month scores: comfortable temperatures, little rain and plenty of sun.
Highs 26°C to 29°C · 6 rain days
Jan, Apr, Sep, Nov, Dec
Still good weather, just not quite the top months.
Highs 20°C to 30°C · 3–7 rain days
May, Jun, Jul, Aug, Oct
No months with tough weather, but these are only average.
Highs 13°C to 23°C · 3–6 rain days
Weather by month
Average highs and lows, rain days, sunshine and our month score out of 10.
| Month | High / low | Rain days | Sunshine | Score |
|---|---|---|---|---|
| January | 30°C / 20°C | 7 days (54 mm) | 12.7 h/day | 6.4/10 |
| Best month: February | 29°C / 19°C | 6 days (36 mm) | 11.6 h/day | 6.7/10 |
| Best month: March | 26°C / 16°C | 6 days (36 mm) | 10.5 h/day | 6.8/10 |
| April | 21°C / 12°C | 5 days (33 mm) | 9.3 h/day | 6.4/10 |
| May | 16°C / 8°C | 5 days (30 mm) | 8.3 h/day | 5.5/10 |
| June | 13°C / 4°C | 4 days (13 mm) | 8.5 h/day | 4.9/10 |
| July | 13°C / 4°C | 3 days (11 mm) | 8.9 h/day | 5.0/10 |
| August | 17°C / 6°C | 3 days (18 mm) | 9.7 h/day | 5.8/10 |
| September | 20°C / 9°C | 3 days (10 mm) | 10.6 h/day | 6.0/10 |
| October | 23°C / 12°C | 6 days (38 mm) | 11.6 h/day | 5.9/10 |
| November | 27°C / 16°C | 5 days (32 mm) | 12.4 h/day | 6.3/10 |
| December | 30°C / 18°C | 5 days (30 mm) | 12.8 h/day | 6.2/10 |
Figures for Mendoza; the country's best months are weighted across its cities. Best months are highlighted. How we score months
Month by month
30°C / 20°C · 7 rain days · 12.7 h sun
In Mendoza, expect highs near 30°C with about 6.6 rain days and 54mm of rain, the wettest month of the year. Sun hours are strong at 12.7. The score sits at 6.4, a good verdict, and New Year's Day falls on the 1st. Heat can be intense at midday, so plan outdoor activity for morning or evening.
29°C / 19°C · 6 rain days · 11.6 h sun
Highs average 28.6°C with 6.2 rain days and 36mm of rain. Sun hours stay high at 11.6, and the month scores 6.7, a good verdict. Carnival falls on the 16th and 17th, adding some festive energy. Warm, mostly dry days make this a solid month to travel.
26°C / 16°C · 6 rain days · 10.5 h sun
Temperatures ease to a 26.1°C high with 6 rain days and 36mm of rain. This is the best-scoring month at 6.8, a good verdict, helped by 10.5 sun hours. The Day of Remembrance for Truth and Justice is marked on the 24th. Cooler evenings make March comfortable for sightseeing.
21°C / 12°C · 5 rain days · 9.3 h sun
Highs drop to 21°C with 5.2 rain days and 33mm of rain, and sun hours fall to 9.3. The score is still 6.4, a good verdict. The month includes the Day of the Veterans and Fallen of the Malvinas War on the 2nd and Good Friday on the 3rd. Autumn conditions bring mild days and cooler nights.
16°C / 8°C · 5 rain days · 8.3 h sun
Highs fall further to 15.6°C, with rain easing to 30mm over 5.2 days. Sun hours drop to 8.3, and the score slips to 5.5, an ok verdict as the chill sets in. Labour Day on the 1st and the May Revolution anniversary on the 25th fall in this month. Days are cool and shorter, suited to those who prefer mild winter travel.
13°C / 4°C · 4 rain days · 8.5 h sun
Winter brings a 12.8°C high and a low of 4.3°C, with rain days dropping to 3.7 and just 13mm of rain. Sun hours stay at 8.5, but the score falls to 4.9, an ok verdict, reflecting the cold. Two historical memorial days fall on the 15th and 20th. Clear skies are common, though temperatures stay low throughout.
13°C / 4°C · 3 rain days · 8.9 h sun
This is the coldest month, with a 12.7°C high and a 3.8°C low, though rain is light at just 11mm over 3 days. The score is 5, an ok verdict, tough weather driven by the cold rather than wet conditions. Independence Day falls on the 9th, a major national holiday. Clear, dry air is typical, but warm clothing is essential.
17°C / 6°C · 3 rain days · 9.7 h sun
Highs start climbing again to 16.5°C, with only 2.8 rain days and 18mm of rain, the driest stretch of the year. Sun hours rise to 9.7, and the score improves to 5.8, an ok verdict. General José de San Martín Memorial Day falls on the 17th. Dry, crisp conditions mark late winter here.
20°C / 9°C · 3 rain days · 10.6 h sun
Spring begins with a 20.3°C high, just 3.1 rain days and 10mm of rain, the lowest rainfall of the year. Sun hours reach 10.6, lifting the score to 6, a good verdict. No major holidays fall this month. Dry air and rising temperatures make this a pleasant shift toward warmer weather.
23°C / 12°C · 6 rain days · 11.6 h sun
Highs reach 23.1°C, but rain days jump to 6.1 with 38mm of rain, a wetter spring pattern. Sun hours are 11.6, yet the score dips slightly to 5.9, an ok verdict. The Day of Respect for Cultural Diversity falls on the 12th. Showers are more frequent, so pack for occasional rain.
27°C / 16°C · 5 rain days · 12.4 h sun
Highs climb to 27.3°C with rain easing to 4.8 days and 32mm. Sun hours reach 12.4, and the score rises to 6.3, a good verdict. National Sovereignty Day falls on the 23rd. Warm, mostly dry days make this a strong month before peak summer heat arrives.
30°C / 18°C · 5 rain days · 12.8 h sun
Summer highs reach 30.1°C with 4.5 rain days and 30mm of rain, alongside the year's longest sun hours at 12.8. The score is 6.2, a good verdict. Immaculate Conception Day falls on the 8th and Christmas Day on the 25th. Hot, bright days suit travellers who enjoy strong summer heat.
By trip type
City sightseeing
March and February suit city trips. In Mendoza, March highs reach about 26°C with 10.5 hours of sun, while February is a little warmer at 28.6°C. Both months get only 36 mm of rain.
Beach
January and February are the warmest months for beach time. Mendoza data shows January highs of 30.4°C with 12.7 hours of sun, and February highs of 28.6°C with 11.6 hours. Nights stay mild, around 19–20°C.
Hiking & nature
April and September bring cooler walking weather. Highs are about 21°C in April and 20°C in September. September is the driest, with 10 mm of rain over 3.1 days, but nights drop to about 9°C, so pack a warm layer.
Events calendar
Public holidays: New Year's Day (1 Jan)
Public holidays: Carnival (16 Feb), Carnival (17 Feb)
Public holidays: Day of Remembrance for Truth and Justice (24 Mar)
Public holidays: Day of the Veterans and Fallen of the Malvinas War (2 Apr), Good Friday (3 Apr)
Public holidays: Labour Day (1 May), May Revolution (25 May)
Public holidays: Anniversary of the Passing of General Martín Miguel de Güemes (15 Jun), General Manuel Belgrano Memorial Day (20 Jun)
Public holidays: Independence Day (9 Jul)
Public holidays: General José de San Martín Memorial Day (17 Aug)
Public holidays: Day of Respect for Cultural Diversity (12 Oct)
Public holidays: National Sovereignty Day (23 Nov)
Public holidays: Immaculate Conception Day (8 Dec), Christmas Day (25 Dec)
Keep planning
FAQ
March is the best month, based on climate data for Mendoza from 2015–2024. It scores 6.8, just ahead of February at 6.7. In March, days reach about 26°C and nights drop to about 16°C. There are about 6 rain days, with 36 mm of rain and 10.5 hours of sun a day. It is warm, but less hot than January.
July is an OK month in Mendoza, with a score of 5. It is the coolest month. Highs are about 13°C and lows are about 4°C, so pack warm layers for the evenings. It is also dry and fairly sunny, with about 3 rain days, 11 mm of rain and 8.9 hours of sun a day.
January is hot but still rated good in Mendoza, with a score of 6.4. Highs average about 30°C, and nights stay warm at about 20°C. It is also the wettest month, with 54 mm of rain over about 7 rain days. The long, sunny days, with 12.7 hours of sun, make up for some of this.
Yes, September is a good month in Mendoza, with a score of 6. It is the driest month, with only 10 mm of rain over about 3 rain days. Days are mild at about 20°C, but nights are cool at about 9°C. You get about 10.6 hours of sun a day.
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