January weather forecast
Buenos Aires, Argentina

January offers the peak of Buenos Aires' summer, inviting visitors with sunny days and blue skies. The city contends with the year's highest temperature, hoisting average high and low temperatures to 30.9°C and 20°C respectively. Abundance of sunshine totals 10.4 hours per day, making the city desirable for outdoor explorations. The average sea temperature is warm and suitable for swimming and other water activities. Winds are light to moderate, providing some relief from the summer heat.

Temperature

With an average high-temperature of 30.9°C and an average low-temperature of 20°C, January is the warmest month.

Heat index

The heat index value during January is computed to be a tropical 34°C. Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

With an average relative humidity of 56%, January is the least humid month in Buenos Aires.

Rainfall

In Buenos Aires, in January, it is raining for 7.5 days, with typically 42mm of accumulated precipitation. In Buenos Aires, during the entire year, the rain falls for 108.2 days and collects up to 629mm of precipitation.

Sea temperature

With an average sea temperature of 25°C, January is the month with the warmest seawater in Buenos Aires, Argentina.
Note: For any water activity, temperatures between 25°C and 29°C are deemed excellent and extremely satisfying for enduring periods.

Daylight

In Buenos Aires, the average length of the day in January is 14h and 10min.
On the first day of the month, sunrise is at 05:44 and sunset at 20:09. On the last day of January, in Buenos Aires, Argentina, sunrise is at 06:12 and sunset at 20:01 -03.

Sunshine

In Buenos Aires, the average sunshine in January is 10.4h.

UV index

With an average maximum UV index of 7, January is the month with the highest UV index in Buenos Aires. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 7 in January leads to these recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.