Best time to visit Mendoza

Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
I'm comfortable up to 27°C feels-like
22° heat-averse 30° heat-loving

Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.

Saved to this browser. Changes update the strips below.
Recent · 2020-2024
Interest Google Trends 2021-2025 searches, not arrivals (?)
Day · avg daily high (?)
Night · avg overnight low (?)
UV index · On a typical day around midday, UV is about this (?)
1211864334791112
On the sunniest 1 in 10 days, UV reaches this — and even higher
141311838111313
PM2.5 air quality · on a typical day (?)
656578876555
On the worst 1 in 10 days, PM2.5 reaches this — and even higher
8798101313109976
April 10/10 feels 20°C (+1°C vs 1991-2020) · HCI 98/100
Day 21° · Night 12° 48% humidity 14 km/h wind 3 rain days (37h) 217h sun
Thermal 10
Sky 10
Rain 10
Wind 10

Higher = better, including rain & wind (green = "doesn't hurt the score", not "lots of it").

How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.

Compare with another destination

Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.

Tours in Mendoza

6 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Mendoza).

  1. 1High Mountain, Aconcagua and Inca Bridge4.97★ (562)from $65
  2. 2All Day, Small Group, Luxury Wine Tour with Gourmet Lunch4.93★ (1,127)8hfrom $250
  3. 3Chandon + 2 wineries + Olivicola5.00★ (2)from $81
  4. 4Private Driver in Mendoza | Hourly & Full-Day Service5.00★ (1)1hfrom $30
  5. 5Uco Valley : Zuccardi Experience & Lunch at Salentein Winery.5.00★ (3)8hfrom $290
  6. 6Private Mendoza WineTour: 3 Premium Wineries Michelin-Guide Lunch5.00★ (27)8hfrom $249

Last refreshed 2026-06-09.

Similar climatesBuenos Aires89% · Santiago87% · Valparaíso86%

Other destinations with the most-alike year-round climate to Mendoza (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Mendoza's. Based on the 2020-2024 climatology, not this year's actual weather.

Month-by-month

Month Temp °C Feels °C Rain days Rain h Rain h/day Humidity Wind km/h Sun h UV Interest Score
Jan 20–30 29 6 54 9.0 36% 19 289 12 Quiet 8
Feb 19–28 27 6 57 9.5 42% 18 245 11 Quiet 9
Mar 17–27 26 6 55 9.2 44% 16 245 8 Quiet 9
Apr 12–21 20 3 37 12.3 48% 14 217 6 Quiet 10
May 8–16 13 3 36 12.0 49% 13 205 4 Quiet 8
Jun 5–13 9 3 38 12.7 52% 13 187 3 Quiet 7
Jul 4–12 9 3 29 9.7 45% 14 208 3 Quiet 7
Aug 6–16 12 3 39 13.0 36% 14 221 4 Busy 8
Sep 9–20 16 3 28 9.3 29% 17 236 7 Busy 8
Oct 13–24 21 4 33 8.3 28% 19 272 9 Moderate 9
Nov 16–28 25 3 24 8.0 27% 19 281 11 Peak 9
Dec 19–30 28 4 28 7.0 29% 20 293 12 Busy 9

UV Index in Mendoza by Month

UV index in Mendoza peaks at 12 (extreme) in January, dropping to 3 (low) in June. January, February, March, October, November, December reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.

Best months in detail

April

10/10

12–21°C (feels 20°C) · 3 rain days (37h) · 217 sun hours · 48% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 8 (high)

March

9/10

17–27°C · 6 rain days (55h) · 245 sun hours · 44% humidity · Quiet crowd · UV 8 (very high) · sunniest 1 in 10 days reach 11 (very high)

February

9/10

19–28°C · 6 rain days (57h) · 245 sun hours · 42% humidity · Quiet crowd · UV 11 (extreme) · sunniest 1 in 10 days reach 13 (extreme)

Every month

Show the other 9 months in detail

January

8/10

20–30°C (feels 29°C) · 6 rain days (54h) · 289 sun hours · 36% humidity · Quiet crowd · UV 12 (extreme) · sunniest 1 in 10 days reach 14 (extreme)

May

8/10

8–16°C (feels 13°C) · 3 rain days (36h) · 205 sun hours · 49% humidity · Quiet crowd · UV 4 (moderate)

June

7/10

5–13°C (feels 9°C) · 3 rain days (38h) · 187 sun hours · 52% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 3 (moderate)

July

7/10

4–12°C (feels 9°C) · 3 rain days (29h) · 208 sun hours · 45% humidity · Quiet crowd · UV 3 (moderate)

August

8/10

6–16°C (feels 12°C) · 3 rain days (39h) · 221 sun hours · 36% humidity · Busy crowd · UV 4 (moderate)

September

8/10

9–20°C (feels 16°C) · 3 rain days (28h) · 236 sun hours · 29% humidity · Busy crowd · UV 7 (high) · sunniest 1 in 10 days reach 8 (very high)

October

9/10

13–24°C (feels 21°C) · 4 rain days (33h) · 272 sun hours · 28% humidity · Moderate crowd · UV 9 (very high) · sunniest 1 in 10 days reach 11 (very high)

November

9/10

16–28°C (feels 25°C) · 3 rain days (24h) · 281 sun hours · 27% humidity · Peak crowd · UV 11 (extreme) · sunniest 1 in 10 days reach 13 (extreme)

December

9/10

19–30°C (feels 28°C) · 4 rain days (28h) · 293 sun hours · 29% humidity · Busy crowd · UV 12 (extreme) · sunniest 1 in 10 days reach 13 (extreme)

Frequently asked questions about visiting Mendoza

When is the best time to visit Mendoza?

April is the highest-scoring month (10/10 on the Holiday Climate Index). Typical conditions: 12–21°C (3 rainy days). The top three months by score are April, March, February.

What is the worst time to visit Mendoza?

July is the lowest-scoring month (7/10). Typical conditions: 4–12°C (3 rainy days).

When are crowds lowest in Mendoza?

Search-interest seasonality (Google Trends 2021-2025) is lowest in April and peaks in November. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.

Which months in Mendoza have good weather but fewer tourists?

April (climate 10/10, crowd index 0) and February (climate 9/10, crowd index 5) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.

What is the UV index in Mendoza by month?

UV peaks at 12 (extreme) in January and is lowest in June at 3 (low). Monthly peak values: Jan 12, Feb 11, Mar 8, Apr 6, May 4, Jun 3, Jul 3, Aug 4, Sep 7, Oct 9, Nov 11, Dec 12. January, February, March, October, November, December reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.

What is the UV index in Mendoza in January?

January is the peak UV month in Mendoza, with a daily-peak UV index of 12 (extreme). At this level, sunburn can occur in under 20 minutes on unprotected fair skin. Apply SPF 50+, wear protective clothing and a hat, and avoid direct midday sun (11:00–17:00).

How high can UV get in Mendoza on the sunniest days?

Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. January is the worst case: typical days average UV 12 (extreme), but the top 10% of days reach UV 14 (extreme) — and even higher. Months where the sunniest days routinely exceed the typical reading: January, February, March, April, June, September, October, November, December. Plan sun protection for the worst case, not the average.