La Rioja Province Weather in May

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

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La Rioja Talampaya National Park Chilecito Villa Unión

Are you planning a trip a to La Rioja Province, Argentina in May and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in La Rioja Province in May

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

Temperatures

The average highest temperatures fluctuate between mild in Chilecito at 18°C (64°F) to pleasant in Talampaya National Park at 21°C (70°F). Nighttime temperatures generally drop to 4°C (39°F) in Talampaya National Park and 7°C (45°F) in Chilecito.

For specific regional insights in La Rioja Province, Argentina, refer to the map provided below.

Precipitation

In May, precipitation varies across different areas. From low rainfall in Talampaya National Park with an average of 11 mm (0.4 in) to heavy rainfall in Chilecito with 296 mm (12 in).

Average sunshine

Plenty of sunshine can be expected in numerous places in May. La Rioja typically receives 203 hours of sunlight, making it ideal for those seeking sunny weather.

Explore La Rioja Province by month

Pick a month to see the average temperature, rainfall and sunshine in La Rioja Province - and find the best time to visit. (based on La Rioja)

January31°C (88°F) February29°C (84°F) March27°C (81°F) April24°C (75°F) May20°C (68°F) June17°C (63°F) This monthJuly17°C (63°F) August20°C (68°F) September23°C (73°F) October26°C (79°F) November29°C (84°F) December31°C (88°F)
Best Time to Visit La Rioja Province →

Best Places to Visit in La Rioja Province in May

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

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

Temperature range in La Rioja Province (May)

Precipitation variation in La Rioja Province (May)

La Rioja

In May La Rioja generally has pleasant temperatures with maximum daytime temperatures around 20°C (68°F), minimum nighttime temperatures around 10°C (50°F) and moderate monthly rainfall. So on average the conditions are excellent that month.

« April
May
June »
April
May
June
Max temperature
24°C (75°F)
20°C (68°F)
17°C (63°F)
Min temperature
14°C (57°F)
10°C (50°F)
6°C (43°F)
Monthly sun hours
203 hours
203 hours
188 hours
Monthly rainfall
65 mm (2.6 in)
41 mm (1.6 in)
23 mm (0.9 in)
Monthly rainy days
4 days
2 days
a single day
Weather conditions
excellent
excellent
very good
Climate in La Rioja →

Talampaya National Park

In May Talampaya National Park generally has pleasant temperatures with maximum daytime temperatures around 21°C (70°F), minimum nighttime temperatures around 4°C (39°F) and low monthly rainfall. So on average the conditions are excellent that month.

« April
May
June »
April
May
June
Max temperature
24°C (75°F)
21°C (70°F)
18°C (64°F)
Min temperature
11°C (52°F)
4°C (39°F)
2°C (36°F)
Monthly rainfall
32 mm (1.3 in)
11 mm (0.4 in)
6 mm (0.2 in)
Monthly rainy days
2 days
a single day
a single day
Weather conditions
excellent
excellent
mixed
Climate in Talampaya National Park →

Chilecito

In May Chilecito generally has moderate temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 7°C (45°F) and heavy monthly rainfall. So on average the conditions are less favorable that month.

« April
May
June »
April
May
June
Max temperature
21°C (70°F)
18°C (64°F)
17°C (63°F)
Min temperature
11°C (52°F)
7°C (45°F)
4°C (39°F)
Monthly sun hours
203 hours
203 hours
188 hours
Monthly rainfall
348 mm (14 in)
296 mm (12 in)
185 mm (7.3 in)
Monthly rainy days
3 days
a single day
a single day
Weather conditions
less favorable
less favorable
less favorable
Climate in Chilecito →

Villa Unión

In May Villa Unión generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 6°C (43°F) and low monthly rainfall. So on average the conditions are excellent that month.

« April
May
June »
April
May
June
Max temperature
22°C (72°F)
19°C (66°F)
17°C (63°F)
Min temperature
9°C (48°F)
6°C (43°F)
3°C (37°F)
Monthly rainfall
22 mm (0.9 in)
17 mm (0.7 in)
9.9 mm (0.4 in)
Monthly rainy days
2 days
a single day
a single day
Weather conditions
excellent
excellent
very good
Climate in Villa Unión →

Is your destination not in the list? Have a look at all destinations in La Rioja 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 La Rioja Province in May.

City Weather Day temp Night temp Rainfall
La Rioja 20°C (68°F) 10°C (50°F) 41 mm (1.6 in)
Talampaya National Park 21°C (70°F) 4°C (39°F) 11 mm (0.4 in)
Chilecito 18°C (64°F) 7°C (45°F) 296 mm (12 in)
Villa Unión 19°C (66°F) 6°C (43°F) 17 mm (0.7 in)

La Rioja Province weather in May: frequently asked questions

What is the weather like in La Rioja Province, Argentina in May?

Expect excellent weather across La Rioja Province, Argentina in May. The popular destination of La Rioja averages 20°C (68°F) by day and 10°C (50°F) at night during this winter month.

What is the average temperature in La Rioja Province, Argentina in May?

Daytime temperatures in La Rioja peak at roughly 20°C (68°F) in May, dropping to about 10°C (50°F) overnight.

Does La Rioja Province, Argentina get a lot of rain in May?

May is on the drier side in La Rioja Province, Argentina. La Rioja averages only about 41 mm (1.6 in), with most days staying dry.

Is May a Good Time to Visit La Rioja Province, Argentina?

We believe that May is one of the best times to visit La Rioja Province, Argentina with overall excellent weather in La Rioja. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, April, May, August, September, October and November provide excellent weather in La Rioja. On the other hand, the months of January and December tend to have mixed weather conditions.

Interested in more climate information?

We have much more information about the climate in La Rioja 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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