Allen Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Allen.
Climate overview of Allen
Allen, Río Negro, Argentina, experiences significant temperature variation throughout the year. Summers bring daytime highs of 33°C (91°F) in January, while winters cool to 13°C (55°F) in July.
The city has a relatively dry climate, receiving around 260 mm (10 in) of rain/snowfall per year. It does experience very little rainfall year-round, with very warm summers and mild winters. October is the wettest month and August the driest. January is the sunniest month, averaging 10.5 hours of sunshine per day.
Allen Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Allen - and find the best time to visit.
Monthly Temperature in Allen
Depending on the time of the year, temperatures range from very warm to moderate in Allen. On average, daytime temperatures range from a very warm 33°C (91°F) in January to a moderate 13°C (55°F) in July.
Nighttime temperatures range from 17°C (63°F) in January to 2°C (36°F) in July.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Allen
Allen has a relatively dry climate with low precipitation, averaging 260 mm (10 in) of rain/snowfall annually. The seasons in Allen bring significant changes in precipitation. The wettest month, October, receives moderate rainfall, with an average of 33 mm (1.3 in) of precipitation. This rainfall is distributed across 4 rainy days.
In contrast, the driest month, August, experiences much less rainfall, totaling 14 mm (0.6 in) over 3 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Allen Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Allen
In Allen, summer days are longer and more sunny, with daily sunshine hours peaking at 10.5 hours in January. As the darker season arrives, the brightness of the sun becomes less. June sees a soft sun for only 4.0 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Allen by Month
The relative humidity is moderate throughout the year in Allen.
The city experiences its highest humidity in June, reaching 69%. In January, the humidity drops to its lowest level at 37%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Allen
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: March, April, September, October and November
- Warmest weather: January
- Most sunshine: January
- Seasonal pattern: Very little rainfall year-round, with very warm summers and mild winters
Frequently asked questions about the climate in Allen
What is the best time to visit Allen?
March, April, September, October and November typically offer the most optimal weather in Allen. In contrast, January and July tend to have less optimal conditions. Allen has very little rainfall year-round, with very warm summers and mild winters.
What temperatures can I expect in Allen?
Daytime highs range from 13°C (55°F) in July to 33°C (91°F) in January. Nighttime lows range from 2°C (36°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Allen get?
Annual rainfall is around 260 mm (10 in). October is the wettest month with 33 mm (1.3 in), while August is the driest with 14 mm (0.6 in).
How sunny is Allen?
Allen receives around 2,679 hours of sunshine per year. January is the sunniest month with 315 hours, while June is the cloudiest with just 120 hours. Overall, Allen enjoys abundant sunshine.
Allen 3-Day Forecast
Allen on the map
Allen is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Córdoba
21°C (70°F) Salta20°C (68°F) Villa Carlos Paz19°C (66°F) Mendoza17°C (63°F) Buenos Aires
18°C (64°F) Mar del Plata15°C (59°F) San Carlos de Bariloche
6°C (43°F) San Martín de los Andes6°C (43°F) 
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