Patna, Bihar Weather by Month and Climate Averages

How much rain does Patna get?

Patna gets 935 mm of precipitation in an average year, spread over about 62 days with measurable rain. That is more rainy days than 56% of India.

July is the wettest month, with 249 mm. March is the driest, with 5 mm. July has the most rainy days, about 15.

Patna weather by month

Patna weather in January

In January, Patna averages a high of 22°C and a low of 9°C. It gets 11 mm of precipitation over about 2 rainy days. The sun is out about 69% of daylight hours. The January record high is 29°C (2008) and the record low is 0°C (1975). January is one of the most comfortable months to visit.

Patna weather in February

In February, Patna averages a high of 27°C and a low of 12°C. It gets 15 mm of precipitation over about 2 rainy days. The sun is out about 82% of daylight hours. The February record high is 39°C (1991) and the record low is 3°C (1974). February is one of the most comfortable months to visit.

Patna weather in March

In March, Patna averages a high of 33°C and a low of 17°C. It gets 5 mm of precipitation over about 2 rainy days. The sun is out about 81% of daylight hours. The March record high is 42°C (2010) and the record low is 8°C (1979).

Patna weather in April

In April, Patna averages a high of 37°C and a low of 22°C. It gets 13 mm of precipitation over about 2 rainy days. The sun is out about 73% of daylight hours. The April record high is 45°C (1980) and the record low is 15°C (1983).

Patna weather in May

In May, Patna averages a high of 38°C and a low of 25°C. It gets 35 mm of precipitation over about 4 rainy days. The sun is out about 70% of daylight hours. The May record high is 46°C (2005) and the record low is 18°C (1980).

Patna weather in June

In June, Patna averages a high of 37°C and a low of 27°C. It gets 147 mm of precipitation over about 8 rainy days. The sun is out about 39% of daylight hours. The June record high is 46°C (1995) and the record low is 19°C (1996).

Patna weather in July

In July, Patna averages a high of 34°C and a low of 27°C. It gets 249 mm of precipitation over about 15 rainy days. The sun is out about 13% of daylight hours. The July record high is 40°C (1992) and the record low is 20°C (1977).

Patna weather in August

In August, Patna averages a high of 33°C and a low of 26°C. It gets 201 mm of precipitation over about 14 rainy days. The sun is out about 16% of daylight hours. The August record high is 40°C (2002) and the record low is 22°C (1987).

Patna weather in September

In September, Patna averages a high of 33°C and a low of 26°C. It gets 201 mm of precipitation over about 10 rainy days. The sun is out about 21% of daylight hours. The September record high is 39°C (1980) and the record low is 20°C (1986).

Patna weather in October

In October, Patna averages a high of 32°C and a low of 22°C. It gets 31 mm of precipitation over about 3 rainy days. The sun is out about 64% of daylight hours. The October record high is 39°C (1994) and the record low is 14°C (1983).

Patna weather in November

In November, Patna averages a high of 29°C and a low of 16°C. It gets 19 mm of precipitation over about 1 rainy days. The sun is out about 82% of daylight hours. The November record high is 35°C (1990) and the record low is 8°C (1975).

Patna weather in December

In December, Patna averages a high of 24°C and a low of 11°C. It gets 10 mm of precipitation over about 1 rainy days. The sun is out about 80% of daylight hours. The December record high is 34°C (2014) and the record low is 4°C (1998). December is one of the most comfortable months to visit.

Sunshine, humidity and wind in Patna

February is the sunniest month in Patna, with sunshine about 82% of daylight hours. July is the cloudiest, at 13%. Over the year the sun shines about 58% of daylight hours. Patna is sunnier than 69% of India.

Humidity peaks in September at 84% and is lowest in April at 44%.

Patna has about 123 days a year above 32°C. Patna is hotter than 51% of India.

Patna weather records

The hottest temperature on record at the Patna station is 46°C, on June 15, 1995. The coldest is 0°C, on January 28, 1975.

The wettest day on record brought 462 mm of rain, on September 4, 1991.

16 all-time records have been set at the station since 1970.

The best time to visit Patna

The most comfortable time to visit is typically January to February and December, when daytime highs sit near 24°C.

Winter (December–February) is warm, with average highs around 24°C and lows near 11°C.

Spring (March–May) is hot, with average highs around 36°C and lows near 21°C.

Summer (June–August) is hot, with average highs around 34°C and lows near 27°C. It can feel humid.

Autumn (September–November) is hot, with average highs around 31°C and lows near 21°C.

Patna climate questions

How much rain does Patna get?

Patna gets 935 mm of precipitation in an average year, over about 62 rainy days.

What is the wettest month in Patna?

July is the wettest month in Patna, with 249 mm. March is the driest, with 5 mm.

How many rainy days does Patna have a year?

Patna has about 62 days with measurable rain in an average year. July has the most, about 15.

What is the hottest month in Patna?

May is the warmest month in Patna, with an average high of 38°C.

What is the coldest month in Patna?

January is the coldest month in Patna, with an average low of 9°C.

What is the record high temperature in Patna?

The record high at the Patna station is 46°C, set on June 15, 1995. The record low is 0°C, on January 28, 1975.

What is the sunniest month in Patna?

February is the sunniest month in Patna, with sunshine about 82% of daylight hours. July is the cloudiest.

What is the best time to visit Patna?

The most comfortable time to visit is typically January to February and December, when daytime highs sit near 24°C.