Climate and monthly weather forecast
Posadas, Argentina

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The climate of Posadas

Geographically positioned in Argentina, the city of Posadas is enveloped in the Köppen Climate Classification Cfa. This classification represents a Humid Subtropical climate with no apparent dry season. The seamless blend of climatic characteristics produces intriguing weather patterns, fluctuating meteorological parameters, and seasonal contrasts worth probing.

Throughout the year, temperatures in Posadas show an impressive range, oscillating between 11°C (51.8°F) and 32.4°C (90.3°F). The mercury climbs markedly high, peaking at 32.4°C (90.3°F) in January, before plunging to a chilling 11°C (51.8°F) in July, demonstrating the incredible span of thermal conditions. Weather in Posadas, however, is humid irrespective of the month, with relative humidity percentages hovering from 72% to 87%. Importantly, this humid climate underpins the prevalence of rainfall events, which are a year-round feature in Posadas.

Shifting attention to precipitation specifics, the intensity of rainfall dramatically fluctuates from a meagre 41mm (1.61") in August to a colossal 117mm (4.61") in October. Rainfall days display similar disparities, ranging from 7.8 days in August to 16.1 days in January. Meanwhile, daylight hours display a less pronounced variability, with the minimum of 10.4 hours per day in June and a maximum of 13.8 hours per day in December.

Wind, cloud coverage, pressure, and several other factors together enhance the complexity of Posadas's climatic backdrop. Winds caress the city at speeds from 7.8km/h (4.8mph) to 10.3km/h (6.4mph). The lowest wind gusts are in July at 15.8km/h (9.8mph), while the strongest gusts occur in August at 17.5km/h (10.9mph). Cloud coverage fluctuates minimally, with a spread from 27% in December to 49% in July. Atmospheric pressure averages between 1008.9mb in December and 1018.2mb in July.

The best time to visit Posadas

When determining the optimal time to visit Posadas, one must consider an amalgamation of weather parameters. From April to October, temperatures remain moderate with the mercury poised between 19.5°C (67.1°F) to 27.5°C (81.5°F). The lower end of this range coincides with June and July, often considered cool but pleasant. Further, these months witness a drop in the number of rainfall days, dipping to 10.3 in June, the lowest of the year, before rising slightly to 11.9 in July.

Daylight hours stay within the manageable range of 10.6 hours to 12.8 hours. Sunshine hours achieve their zenith during May and July, stretching from 7.2 in June to 8.3 hours in April. The latter part of these months also sees a reduction in humidity levels, making it comfortable for outdoor activities.

The worst time to visit Posadas

Conversely, January, February, November, and December can prove challenging for visitors, mainly because of soaring temperatures. The mercury often tips above the 30°C (86°F) mark in these months, while wind speed averages 8.2km/h (5.1mph) in January and even goes down to 7.8km/h (4.8mph) in March. Moreover, these months showcase the highest rainfall amounts, as well as a significant number of rainfall days.

Spring weather in Posadas

Spring season in Posadas is from September to November when temperatures gradually ascend from 22.6°C (72.7°F) to 29.6°C (85.3°F). Rainfall increases over these months, beginning with 52mm (2.05") in September and escalating to a substantial 114mm (4.49") by November. Despite the rise in rainfall, the number of sunshine hours also surges, averaging between 8 hours and 10.3 hours.

Summer weather in Posadas

From December to February, Posadas experiences summer, distinguishing itself with the highest temperatures of the year, from 30.2°C (86.4°F) to 32.4°C (90.3°F). This is also the time when the city is subject to rather heavy rainfall, punctuated by an average of 76mm (2.99") to 114mm (4.49") precipitation.

Autumn weather in Posadas

Autumn descends upon Posadas from March to May, introducing moderate temperatures ranging from 27.1°C (80.8°F) to 22.5°C (72.5°F). Rainfall hovers between 80mm (3.15") to 98mm (3.86") in these months. Despite it, the sunshine hours maintain comfortable levels at 8.3 hours in March, dwindling to 6.3 hours in May.

Winter weather in Posadas

In winter, from June to August, temperatures in Posadas descend to the lowest values of the year. However, the city's location prevents extreme low values, with temperatures still comfortable, registering between 22.6°C (72.7°F) and 19.5°C (67.1°F). Simultaneously, the number of sunshine hours increases from 5.3 in June to 8.1 in August, granting sufficient light and warmth on winter days.

Weather in January

January in Posadas, Argentina enjoys its warmest period, with daily top temperatures peaking at 32.4°C (90.3°F), and even at night, it does not drop below 20.8°C (69.4°F). With longer daylight hours of 13.6 hours, there are more opportunities to enjoy the sunshine. Weather in January »

Weather in February

The weather in February remains warmer, with a slight decrease in daily high temperatures from January, settling at 32.2°C (90°F). Posadas experiences slightly shorter daylight hours. The relative humidity is the same as the previous month. Weather in February »

Weather in March

A slight transition is observed in March, with temperatures beginning to ease from the summer intensity. Notably, rainfall is expected at 80mm (3.15"), spread across 13.4 days of the month. The duration of daylight begins to ease, signaling the onset of autumn. Weather in March »

Weather in April

With the onset of autumn, April in Posadas becomes notably cooler. When compared from March to April, average daily temperatures dip from 30.2°C (86.4°F) to 27.1°C (80.8°F). Seasonal transitions are further marked by changing wind conditions. Weather in April »

Weather in May

In May, the city witnesses a significant change in climate. With daily high temperatures averaging at 22.5°C (72.5°F), the weather becomes quite cool compared to the warm summer months. Humidity levels begin to rise hinting at the approach of winter. Weather in May »

Weather in June

June marks the beginning of winter in Posadas. The average lowest temperatures drop to 11.9°C (53.4°F) making it one of the coldest months of the year. As the temperature drops, the number of daylight hours also reduces. Comparatively, winds grow stronger, leading to chilly nights. Weather in June »

Weather in July

July is the coldest month in Posadas, with temperatures dropping to an average low of 11°C (51.8°F). Humidity increases slightly as compared to June. Despite being the coldest month, Posadas still provides moderately warm and dry weather during the day. Weather in July »

Weather in August

In August, temperatures start to rise again, but rainfall reduces significantly to 41mm (1.61") during the whole month. Also, the number of daylight hours increase, signaling an end to the winter season. The climatic pattern of strong winds that began in winter persists in this month. Weather in August »

Weather in September

Posadas welcomes spring in September. With daily highest temperatures rising to 24.8°C (76.6°F), the city greets warmer weather. Outdoor enthusiasts start to take advantage of the city’s increasing warmth and delight in panoramic views. Weather in September »

Weather in October

October features a significant rise in temperature, with the city experiencing a high of 27.5°C (81.5°F) during this month. Satellite data indicates an increase in cloud cover, hinting at changing weather conditions. Despite this, October still retains a lot of the favorable weather conditions from the previous month. Weather in October »

Weather in November

November in Posadas witnesses an increase in rainfall to 114mm (4.49"). However, the city experiences high sunshine hours, averaging at 10.3 hours a day. The intermittent rain showers make the city's landscapes lush and vibrant. Weather in November »

Weather in December

Wrapping up the year, December in Posadas sees increased temperatures, with maximums averaging at 31.7°C (89.1°F). It is characterized by moderately high rainfall of 91mm (3.58") through the month. Furthermore, wind speeds start to decline, making for less breezy days. Weather in December »
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Frequently asked questions

What are the warmest months in Posadas?

January, having an average high-temperature of 32.4°C (90.3°F) and an average low-temperature of 20.8°C (69.4°F), is the warmest month in Posadas.

How much does it rain in Posadas?

Throughout the year, there are 152.6 rainfall days, and 981mm (38.62") of precipitation is accumulated.

When is the highest UV index in Posadas?

With an average maximum UV index of 7, January is the month with the highest UV index in Posadas.

When is the lowest UV index in Posadas?

The months with the lowest UV index in Posadas are May and June, with an average maximum UV index of 4.

What is the most humid month in Posadas?

The most humid month in Posadas is June, with an average relative humidity of 87%.

What is the month with the shortest days in Posadas?

The month with the shortest days is June, with an average of 10h and 24min of daylight.

What is the month with the least sunshine in Posadas?

With an average of 5.3h of sunshine, June has the least sunshine of the year.

What are the coldest months in Posadas?

With average high and low temperatures of 19.5°C (67.1°F) and 11°C (51.8°F) respectively, July is Posadas's coldest month.

What is the driest month in Posadas?

The month with the least rainfall in Posadas, Argentina, is August, when the rain falls for 7.8 days and typically collects 41mm (1.61") of precipitation.

What is the wettest month in Posadas?

The month with the most rainfall in Posadas, Argentina, is October, when the rain falls for 13.3 days and typically aggregates up to 117mm (4.61") of precipitation.

What month has the most sunshine in Posadas?

The month with the most sunshine is November, with an average of 10.3h of sunshine.

What is the least humid month in Posadas?

The least humid month is December, with an average relative humidity of 72%.

When are the longest days in Posadas?

The month with the longest days is December, with an average of 13h and 48min of daylight.

Is there Daylight Saving Time (DST) in Posadas?

Posadas does not utilize Daylight Saving Time (DST). -03 timezone is used over the entire year.

Average temperature
Posadas, Argentina

Average temperature - Posadas, Argentina

The warmest month (with the highest average high temperature) is January (32.4°C).
The month with the lowest average high temperature is July (19.5°C).

The months with the highest average low temperature are January and February (20.8°C).
The coldest month (with the lowest average low temperature) is July (11°C).

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Average pressure
Posadas, Argentina

Average pressure - Posadas, Argentina

The month with the highest atmospheric pressure is July (1018.2mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).

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Average wind speed
Posadas, Argentina

Average wind speed - Posadas, Argentina

The windiest month (with the highest average wind speed) is August (10.3km/h).
The calmest month (with the lowest average wind speed) is March (7.8km/h).

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Average humidity
Posadas, Argentina

Average humidity - Posadas, Argentina

The month with the highest relative humidity is June (87%).
The month with the lowest relative humidity is December (72%).

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Average rainfall
Posadas, Argentina

Average rainfall - Posadas, Argentina

The wettest month (with the highest rainfall) is October (117mm).
The driest month (with the least rainfall) is August (41mm).

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Average rainfall days
Posadas, Argentina

Average rainfall days - Posadas, Argentina

The month with the highest number of rainy days is January (16.1 days).
The month with the least rainy days is August (7.8 days).

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Average daylight / Average sunshine
Posadas, Argentina

Average daylight / Average sunshine - Posadas, Argentina

The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 24min).

The month with the most sunshine is November (Average sunshine: 10h and 18min).
The month with the least sunshine is June (Average sunshine: 5h and 18min).

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Average sunshine days
Posadas, Argentina

Average sunshine days - Posadas, Argentina

The month with the most sunshine days is August (21.9 days).
The month with the least sunshine days is February (12.7 days).

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Average visibility
Posadas, Argentina

Average visibility - Posadas, Argentina

The months with the highest visibility are January, February, March, November and December (9km).
The months with the lowest visibility are May, June and July (7km).

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Posadas, Argentina

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