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, days peak near 30°C with about 6.6 rain days and 54mm of rain, the wettest month of the year. Sun hours run high at 12.7, so it feels dry despite the rain count. The score is 6.4, a good month overall, and New Year's Day falls on the 1st.
29°C / 19°C · 6 rain days · 11.6 h sun
Highs ease slightly to 28.6°C with 6.2 rain days and 36mm of rain. Sun hours drop a touch to 11.6, still plenty for outdoor plans. The score rises to 6.7, good, and Carnival falls on the 16th and 17th.
26°C / 16°C · 6 rain days · 10.5 h sun
This is the best-scoring month at 6.8, good. Highs sit at 26.1°C with 6 rain days and 36mm of rain, and sun hours fall to 10.5 as autumn sets in. A public holiday on the 24th marks the Day of Remembrance for Truth and Justice.
21°C / 12°C · 5 rain days · 9.3 h sun
Temperatures drop more sharply, with highs of 21°C and lows near 12.3°C. Rain is lighter, 5.2 days and 33mm, and sun hours fall to 9.3. The score stays good at 6.4, with two holidays, April 2nd and Good Friday on the 3rd.
16°C / 8°C · 5 rain days · 8.3 h sun
Highs fall to 15.6°C and lows to 8°C, marking the start of cooler autumn weather. Rain days hold at 5.2 with 30mm, and sun hours drop to 8.3, among the lowest of the year. The score is 5.5, only ok, with Labour Day on the 1st and May Revolution Day on the 25th.
13°C / 4°C · 4 rain days · 8.5 h sun
This is the coldest and least sunny stretch: highs of just 12.8°C, lows of 4.3°C, and only 8.5 sun hours. Rain is rare, 3.7 days and 13mm, so the weather is tough mainly because of cold, not wet conditions. The score drops to 4.9, the lowest of the year, with two holidays on the 15th and 20th.
13°C / 4°C · 3 rain days · 8.9 h sun
July stays cold, with highs of 12.7°C and lows of 3.8°C, the chilliest point of the year. Rain days fall to just 3, with only 11mm total, making it the driest month. The score is 5, ok, and Independence Day falls on the 9th.
17°C / 6°C · 3 rain days · 9.7 h sun
Highs climb back to 16.5°C as winter eases, though mornings stay cold at 6.1°C. Rain stays light, 2.8 days and 18mm, while sun hours pick up to 9.7. The score improves to 5.8, ok, with a holiday on the 17th.
20°C / 9°C · 3 rain days · 10.6 h sun
Spring brings highs of 20.3°C and lows of 8.9°C, with rain staying low at 3.1 days and just 10mm, the driest total of the year. Sun hours rise to 10.6. The score is 6, a good month for travel.
23°C / 12°C · 6 rain days · 11.6 h sun
Highs reach 23.1°C but rain picks up again, 6.1 days and 38mm, one of the wetter months. Sun hours rise to 11.6. The score is 5.9, ok, with a holiday on the 12th.
27°C / 16°C · 5 rain days · 12.4 h sun
Highs climb to 27.3°C with lows of 15.7°C as summer approaches. Rain eases to 4.8 days and 32mm, and sun hours reach 12.4. The score is 6.3, good, with a holiday on the 23rd.
30°C / 18°C · 5 rain days · 12.8 h sun
Summer heat sets in, with highs of 30.1°C and lows of 18.4°C. Rain days drop to 4.5 with 30mm, and sun hours peak at 12.8, the sunniest month. The score is 6.2, good, with holidays on the 8th and 25th.
By trip type
City sightseeing
February and March work well for city breaks. In Mendoza, highs drop from 28.6°C in February to 26.1°C in March, with sun hours easing from 11.6 to 10.5, giving warm but less intense days for walking around.
Beach
January and February are the top beach months. These are the hottest months in Argentina's Mendoza data, with highs of 30.4°C in January and 28.6°C in February, plus over 11 hours of sun a day.
Hiking & nature
April and September suit hiking best. April brings cooler highs around 21°C with only 5.2 rain days, while September is drier still, with just 3.1 rain days and a high of 20.3°C, both avoiding summer heat.
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
Yes, March is one of the best months, scoring 6.8 out of 10. In Mendoza, days average 26.1°C with lows of 16.4°C. Rain falls on about 6 days, totaling 36mm, and sunshine runs around 10.5 hours a day, making it a comfortable shoulder-season month.
July is only an "ok" month, scoring 5 out of 10. Mendoza is cold then, with highs of just 12.7°C and lows dropping to 3.8°C. It's also the driest month of the year, with only 3 rain days and 11mm of rain, but sunshine hours fall to 8.9, among the lowest of the year.
August scores 5.8, an "ok" rating, slightly better than July. Highs climb to 16.5°C and lows to 6.1°C, a clear step up from mid-winter. Rain is minimal, with just 2.8 rain days and 18mm total, and sun hours rise to 9.7, signaling the slow shift toward spring.
Yes, December scores 6.2 and is rated "good." It's warm, with highs of 30.1°C and lows of 18.4°C in Mendoza, similar to January. Rain is moderate at 4.5 days and 30mm, while sunshine hours are high at 12.8, among the longest of the year.
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