San Luis Province Weather in May

Average temperatures, rainfall, sunshine and the best places to visit in San Luis Province, Argentina in May.

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Merlo Potrero de los Funes San Luis Cortaderas

Planning a journey to San Luis Province, Argentina this May and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in San Luis Province in May

San Luis Province, Argentina is a region in Argentina. May in San Luis Province generally has temperatures that range from mild to pleasant, with precipitation levels ranging from low to moderate. May is a winter month.

Temperatures

During the day the temperature is mild in Cortaderas at 18°C (64°F) and pleasant in Villa Mercedes at 20°C (68°F). As night falls, temperatures generally drop to 8°C (46°F) in Villa Mercedes and 6°C (43°F) in Cortaderas.

To learn more about the conditions in specific areas of San Luis Province, Argentina, check out the map below.

Precipitation

In May, precipitation varies across different areas. From low rainfall in San Luis with an average of 28 mm (1.1 in) to moderate rainfall in San Francisco del Monte de Oro with 33 mm (1.3 in).

Explore San Luis Province by month

Pick a month to see the average temperature, rainfall and sunshine in San Luis Province — and find the best time to visit. (based on Merlo)

January28°C (82°F) February27°C (81°F) March25°C (77°F) April22°C (72°F) May18°C (64°F) June16°C (61°F) This monthJuly15°C (59°F) August19°C (66°F) September21°C (70°F) October24°C (75°F) November26°C (79°F) December28°C (82°F)
Best Time to Visit San Luis Province →

Best Places to Visit in San Luis Province in May

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across San Luis Province.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in San Luis Province

What is the weather like in May for some of the most popular destinations in San Luis Province, Argentina?

Temperature range in San Luis Province (May)

Precipitation variation in San Luis Province (May)

Merlo

In May Merlo generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 6°C (43°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« April
May
June »
April
May
June
Max temperature
22°C (72°F)
18°C (64°F)
16°C (61°F)
Min temperature
10°C (50°F)
6°C (43°F)
3°C (37°F)
Monthly rainfall
61 mm (2.4 in)
31 mm (1.2 in)
15 mm (0.6 in)
Monthly rainy days
6 days
4 days
3 days
Weather conditions
perfect
pleasant
pleasant
Climate in Merlo →

Potrero de los Funes

In May Potrero de los Funes generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 8°C (46°F) and low monthly rainfall. So on average the conditions are perfect that month.

« April
May
June »
April
May
June
Max temperature
23°C (73°F)
19°C (66°F)
17°C (63°F)
Min temperature
11°C (52°F)
8°C (46°F)
5°C (41°F)
Monthly rainfall
61 mm (2.4 in)
29 mm (1.1 in)
11 mm (0.4 in)
Monthly rainy days
5 days
3 days
2 days
Weather conditions
perfect
perfect
pleasant
Climate in Potrero de los Funes →

San Luis

In May San Luis generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 8°C (46°F) and low monthly rainfall. So on average the conditions are perfect that month.

« April
May
June »
April
May
June
Max temperature
24°C (75°F)
20°C (68°F)
18°C (64°F)
Min temperature
12°C (54°F)
8°C (46°F)
5°C (41°F)
Monthly rainfall
61 mm (2.4 in)
28 mm (1.1 in)
11 mm (0.4 in)
Monthly rainy days
5 days
3 days
2 days
Weather conditions
perfect
perfect
perfect
Climate in San Luis →

Cortaderas

In May Cortaderas generally has moderate temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 6°C (43°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« April
May
June »
April
May
June
Max temperature
21°C (70°F)
18°C (64°F)
15°C (59°F)
Min temperature
9°C (48°F)
6°C (43°F)
3°C (37°F)
Monthly rainfall
62 mm (2.4 in)
33 mm (1.3 in)
16 mm (0.6 in)
Monthly rainy days
6 days
4 days
3 days
Weather conditions
perfect
pleasant
pleasant
Climate in Cortaderas →

Carpintería

In May Carpintería generally has moderate temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 6°C (43°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« April
May
June »
April
May
June
Max temperature
22°C (72°F)
18°C (64°F)
16°C (61°F)
Min temperature
10°C (50°F)
6°C (43°F)
3°C (37°F)
Monthly rainfall
62 mm (2.4 in)
32 mm (1.3 in)
15 mm (0.6 in)
Monthly rainy days
6 days
4 days
3 days
Weather conditions
perfect
pleasant
pleasant
Climate in Carpintería →

Is your destination not in the list? Have a look at all destinations in San Luis Province, in Argentina.

In our records: Argentina May extremes

Notable May records observed across cities in Argentina in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • From our sources, the wettest May day in Argentina brought 318 mm (13 in) in Salta on May 18, 1981.

Popular cities in May

Day & night temperatures, rainfall and average weather in San Luis Province in May.

City Weather Day temp Night temp Rainfall
Merlo 18°C (64°F) 6°C (43°F) 31 mm (1.2 in)
Potrero de los Funes 19°C (66°F) 8°C (46°F) 29 mm (1.1 in)
San Luis 20°C (68°F) 8°C (46°F) 28 mm (1.1 in)
Cortaderas 18°C (64°F) 6°C (43°F) 33 mm (1.3 in)
Carpintería 18°C (64°F) 6°C (43°F) 32 mm (1.3 in)
Villa Mercedes 20°C (68°F) 8°C (46°F) 33 mm (1.3 in)

San Luis Province weather in May: frequently asked questions

What is the weather like in San Luis Province, Argentina in May?

May in San Luis Province, Argentina brings pleasant weather. In Merlo, daytime temperatures are typically around 18°C (64°F) and nighttime lows hover near 6°C (43°F).

What is the average temperature in San Luis Province, Argentina in May?

Average temperatures in San Luis Province, Argentina during May range from a nighttime low near 6°C (43°F) to a daytime high around 18°C (64°F) in Merlo.

Does San Luis Province, Argentina get a lot of rain in May?

Not particularly. Merlo averages just 31 mm (1.2 in) of rain in May, making it a mostly dry month for San Luis Province, Argentina.

Is May a Good Time to Visit San Luis Province, Argentina?

In our opinion, May may not be the ideal time to visit San Luis Province, Argentina due to the typically pleasant weather in Merlo.

Generally speaking, the best visiting conditions can be found in March, April, August, September and October offering mostly perfect weather in Merlo.

Interested in more climate information?

We have much more information about the climate in San Luis Province.

Weather and climate has detailed information for every country in the world. Are you going to Argentina? Get detailed historical weather averages for many cities in Argentina.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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