Formosa, Formosa Weather by Month and Climate Averages

Formosa, Formosa gets 1241 mm of precipitation a year over about 74 rainy days. January is the warmest month (average high 36°C) and July the coldest (average low 11°C).

Formosa climate at a glance

Humid subtropical climate

Formosa, Formosa has hot summers and warm winters. Daytime highs range from about 24°C in June to 36°C in January. December is usually the wettest month. The most comfortable time to visit is typically May to July, when daytime highs sit near 25°C.

How much rain does Formosa get?

Formosa gets 1241 mm of precipitation in an average year, spread over about 74 days with measurable rain. That is more rainy days than 89% of Argentina.

December is the wettest month, with 166 mm. August is the driest, with 36 mm. October has the most rainy days, about 8.

Formosa weather by month

Formosa weather in January

In January, Formosa averages a high of 36°C and a low of 22°C. It gets 123 mm of precipitation over about 7 rainy days. The sun is out about 61% of daylight hours. The January record high is 43°C (2022) and the record low is 11°C (1974).

Formosa weather in February

In February, Formosa averages a high of 34°C and a low of 22°C. It gets 131 mm of precipitation over about 7 rainy days. The sun is out about 61% of daylight hours. The February record high is 43°C (2022) and the record low is 9°C (2023).

Formosa weather in March

In March, Formosa averages a high of 33°C and a low of 21°C. It gets 124 mm of precipitation over about 7 rainy days. The sun is out about 62% of daylight hours. The March record high is 42°C (1990) and the record low is 8°C (2012).

Formosa weather in April

In April, Formosa averages a high of 30°C and a low of 18°C. It gets 133 mm of precipitation over about 6 rainy days. The sun is out about 61% of daylight hours. The April record high is 40°C (2024) and the record low is 4°C (1980).

Formosa weather in May

In May, Formosa averages a high of 26°C and a low of 14°C. It gets 94 mm of precipitation over about 6 rainy days. The sun is out about 51% of daylight hours. The May record high is 37°C (2009) and the record low is 0°C (2008). May is one of the most comfortable months to visit.

Formosa weather in June

In June, Formosa averages a high of 24°C and a low of 12°C. It gets 54 mm of precipitation over about 5 rainy days. The sun is out about 49% of daylight hours. The June record high is 34°C (2020) and the record low is -1°C (2016). June is one of the most comfortable months to visit.

Formosa weather in July

In July, Formosa averages a high of 24°C and a low of 11°C. It gets 51 mm of precipitation over about 4 rainy days. The sun is out about 53% of daylight hours. The July record high is 34°C (2006) and the record low is -2°C (1976). July is one of the most comfortable months to visit.

Formosa weather in August

In August, Formosa averages a high of 27°C and a low of 12°C. It gets 36 mm of precipitation over about 4 rainy days. The sun is out about 70% of daylight hours. The August record high is 39°C (2020) and the record low is -1°C (2007).

Formosa weather in September

In September, Formosa averages a high of 29°C and a low of 14°C. It gets 63 mm of precipitation over about 5 rainy days. The sun is out about 61% of daylight hours. The September record high is 42°C (2020) and the record low is 0°C (2022).

Formosa weather in October

In October, Formosa averages a high of 31°C and a low of 18°C. It gets 126 mm of precipitation over about 8 rainy days. The sun is out about 60% of daylight hours. The October record high is 44°C (2014) and the record low is 5°C (1979).

Formosa weather in November

In November, Formosa averages a high of 32°C and a low of 19°C. It gets 141 mm of precipitation over about 7 rainy days. The sun is out about 57% of daylight hours. The November record high is 42°C (2023) and the record low is 8°C (1974).

Formosa weather in December

In December, Formosa averages a high of 34°C and a low of 21°C. It gets 166 mm of precipitation over about 8 rainy days. The sun is out about 61% of daylight hours. The December record high is 42°C (2008) and the record low is 11°C (1973).

Sunshine, humidity and wind in Formosa

August is the sunniest month in Formosa, with sunshine about 70% of daylight hours. June is the cloudiest, at 49%. Over the year the sun shines about 59% of daylight hours. Formosa is sunnier than 53% of Argentina.

Humidity peaks in May at 76% and is lowest in February at 60%.

Formosa has about 59 days a year above 32°C. Formosa is hotter than 90% of Argentina.

First and last freeze in Formosa

The first fall freeze in Formosa typically comes around July 7, and the last spring freeze around July 19. That leaves a frost-free growing season of about 353 days.

Formosa weather records

The hottest temperature on record at the Formosa station is 44°C, on October 18, 2014. The coldest is -2°C, on July 29, 2021.

The wettest day on record brought 362 mm of rain, on December 6, 2023.

28 all-time records have been set at the station since 1973.

The best time to visit Formosa

The most comfortable time to visit is typically May to July, when daytime highs sit near 25°C.

Winter (June–August) is warm, with average highs around 25°C and lows near 12°C.

Spring (September–November) is hot, with average highs around 31°C and lows near 17°C.

Summer (December–February) is hot, with average highs around 35°C and lows near 22°C.

Autumn (March–May) is hot, with average highs around 30°C and lows near 17°C.

Monthly climate

MonthPrecipRain daysHumiditySunshineRecord highRecord low
January123 mm761%61%43°11°
February131 mm760%61%43°
March124 mm765%62%42°
April133 mm673%61%40°
May94 mm676%51%37°
June54 mm575%49%34°-1°
July51 mm470%53%34°-2°
August36 mm461%70%39°-1°
September63 mm564%61%42°
October126 mm865%60%44°
November141 mm765%57%42°
December166 mm864%61%42°11°

From ERA5 reanalysis. Sunshine is estimated from cloud cover.

Formosa climate questions

How much rain does Formosa get?

Formosa gets 1241 mm of precipitation in an average year, over about 74 rainy days.

What is the wettest month in Formosa?

December is the wettest month in Formosa, with 166 mm. August is the driest, with 36 mm.

How many rainy days does Formosa have a year?

Formosa has about 74 days with measurable rain in an average year. October has the most, about 8.

What is the hottest month in Formosa?

January is the warmest month in Formosa, with an average high of 36°C.

What is the coldest month in Formosa?

July is the coldest month in Formosa, with an average low of 11°C.

What is the record high temperature in Formosa?

The record high at the Formosa station is 44°C, set on October 18, 2014. The record low is -2°C, on July 29, 2021.

What is the sunniest month in Formosa?

August is the sunniest month in Formosa, with sunshine about 70% of daylight hours. June is the cloudiest.

When is the first frost in Formosa?

The first fall freeze in Formosa typically comes around July 7. The last spring freeze is around July 19.

What is the best time to visit Formosa?

The most comfortable time to visit is typically May to July, when daytime highs sit near 25°C.

Source: NOAA GHCN-Daily station FORMOSA (6 km away).

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Normals from NOAA GHCN-Daily station FORMOSA.