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Weather in South America for May 2026

Your guide to South America weather in May - trends and predictions

    Temperatures

  • Until now, May 2026 in South America is slightly cooler than the historical average by -1.3 °C.

  • Expect cooler weather in the next days in South America with the forecast suggesting a temperature of 23.4 °C, lower than the historical average.

  • In general, the average temperature in South America at the beginning of May is 28.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23.9 °C by the end of May.

    • Rain 🌧️

  • The climate of South America in May is notably wet, with an average of 14 rainy days, and a total of 62.1 mm of precipitation.

Average dry days
17
Dry days
Average rainy days
14
Rainy days
Average snowy days
0
Snow days
Average temperatures
26°/20°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
74 %
Avg humidity

South America Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
28°
2
Overcast
29°
3
Sunny
27°
4
Sunny
28°
5
Sunny
28°
6
Sunny
28°
7
Sunny
29°
8
Partly cloudy
30°
9
Sunny
32°
10
Moderate or heavy rain shower
27°
11
Moderate or heavy rain shower
24°
12
Moderate rain at times
25°
13
Sunny
26°
14
Partly cloudy
25°
15
Patchy rain possible
24°
16
Sunny
26°
17
Sunny
27°
18
Overcast
26°
19
Sunny
26°
20
Sunny
26°
21
Light rain shower
25°
22
Patchy rain possible
23°
23
Cloudy
26°
24
Patchy rain possible
26°
25
Patchy rain possible
24°
26
Patchy rain possible
26°
27
Patchy rain possible
24°
28
Patchy rain possible
23°
29
Patchy rain possible
22°
30
Patchy rain possible
24°
31
Patchy rain possible
24°

Temperatures trend during May in South America

See the weather trend as well as the moving average line

May weather in South America day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Overcast
Overcast
 28° /21° 1.6 mm 6
2 May Overcast
Overcast
 29° /21° 0 mm 7
3 May Sunny
Sunny
 27° /20° 1.4 mm 6
4 May Sunny
Sunny
 28° /20° 0.1 mm 7
5 May Sunny
Sunny
 28° /20° 0 mm 7
6 May Sunny
Sunny
 28° /20° 0 mm 7
7 May Sunny
Sunny
 29° /20° 0 mm 7
8 May Partly cloudy
Partly cloudy
 30° /21° 0 mm 7
9 May Sunny
Sunny
 32° /21° 0.1 mm 8
10 May Moderate or heavy rain shower
Moderate or heavy rain shower
 27° /21° 4.2 mm 6
11 May Moderate or heavy rain shower
Moderate or heavy rain shower
 24° /20° 6.2 mm 5
12 May Moderate rain at times
Moderate rain at times
 25° /20° 1.2 mm 6
13 May Sunny
Sunny
 26° /19° 1.3 mm 6
14 May Partly cloudy
Partly cloudy
 25° /19° 0.2 mm 6
15 May Patchy rain possible
Patchy rain possible
 24° /19° 1.6 mm 5
16 May Sunny
Sunny
 26° /19° 0 mm 6
17 May Sunny
Sunny
 27° /19° 1.2 mm 6
18 May Overcast
Overcast
 26° /20° 0.1 mm 6
19 May Sunny
Sunny
 26° /19° 1.5 mm 6
20 May Sunny
Sunny
 26° /19° 2.3 mm 6
21 May Light rain shower
Light rain shower
 25° /19° 2.9 mm 6
22 May Patchy rain possible
Patchy rain possible
 23° /19° 0.3 mm 4.9
23 May Cloudy
Cloudy
 26° /19° 0 mm 6.2
24 May Patchy rain possible
Patchy rain possible
 26° /20° 1 mm 6.3
25 May Patchy rain possible
Patchy rain possible
 24° /21° 2.1 mm 4.3
26 May Patchy rain possible
Patchy rain possible
 26° /21° 0.2 mm 1.2
27 May Patchy rain possible
Patchy rain possible
 24° /21° 3.4 mm 6
28 May Patchy rain possible
Patchy rain possible
 23° /20° 1.2 mm 6
29 May Patchy rain possible
Patchy rain possible
 22° /20° 0.1 mm 6
30 May Patchy rain possible
Patchy rain possible
 24° /18° 0.1 mm 6
31 May Patchy rain possible
Patchy rain possible
 24° /19° 0.4 mm 6
Next
Important Notice
Our weather forecast for South America in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the South America forecast closer to your planned date for the most up-to-date weather information.
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South America in May - FAQ

What are the expected maximum and minimum temperatures in South America during May?

During May, expect a variety of temperatures with highs around 26° and lows near 20°, suitable for diverse activities and preferences.

How much rainfall should be expected in South America during May?

Moderate rainfall is anticipated in South America during May, with a total of 62.1 mm spread over approximately 14 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in South America during May?

The average wind speed in South America during May is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

South America water temperatures in May

The average water temperature of the Atlantic Ocean near South America in May is 22.3 °C. At the beginning of May temperatures are around 22.4 °C; by the end of the month they get a bit cooler and reach 21.8 °C.

What is the water temperature in South America in May?
The average water temperature in South America in May is 22.3 °C.
Can you swim in South America in May?
Comfortably warm for most people. Sensitive swimmers might prefer a light rash-guard, but wetsuits are rarely needed.

May rainfall patterns in South America

Explore the daily rainfall trends and prepare for South Americas May weather 💧
Typically, South America has 14 rainy days in May with a total of 62.1 mm of rainfall.

UV exposure in South America during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

Quick links

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Location coordinates Where is South America?

Get accurate weather forecasts for South America, located at latitude -22.906 and longitude -43.182. Stay updated with localized weather information tailored for South America.

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