The climate in Porteña during May can be summarized as mild and reasonably dry.
May is in the fall / autumn in Porteña and is typically the 5th coldest month of the year. Daytime maximum temperatures average around 22°C (71°F), whilst at night 10°C (50°F) is normal.
Daytime temperature | 21.9°C 71.3°F |
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Nightly temperature | 9.8°C 49.6°F |
Average temperature | 15.8°C 60.4°F |
Daily sunshine | 6.3 hrs |
Avg rainfall | 44 mm 1.7 ins |
Rainy days | 6 days |
Sea temperature | 17.4°C 63.3°F |
Humidity | 80% |
Windspeed | 9.7kph 6 mph |
On average May is the 4th driest month of the year in Porteña with around 44mm 1.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.3 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Porteña in May 2025.
Hottest month: | January | 31.6°C 88.9°F |
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Driest month: | July | 20mm 0.8ins |
Sunniest month: | February | 9.3hrs |
Coldest month: | July | 18°C 64.4°F |
Wettest month: | March | 148mm 5.8ins |