Louisiana climate guide

Read our complete guide to the climate in Louisiana.

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Maximum daytime temperature °C
Hours of sunshine (daily)
Days with some rainfall

Below are average maximum temperatures at popular destinations in Louisiana for next month - July. Select a destination to see the climate guide for all months of the year.

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The climate guide for Louisiana (New Orleans) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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Louisiana climate overview

The marshy delta of the Mississippi River marks the south-eastern tip of Louisiana in the southern United States. The State is known for its jazz and laid back atmosphere, attractive river valleys and swamps of alligators and birdlife.

Its strategic position on the Gulf of Mexico led to it being colonised by the French in the 17th century, but since then several nationalities have ruled or influenced it, leading to a rich heritage that shapes the culture today. The French Canadians who settled here after being deported from the north by the British were originally called Arcadian, but their descendants' name has been shortened to Cajun.

Louisiana's landscape is typically low coastal marshes and river floodplain. The eroding coastline does not have a beach, its marshy delta filled by sediment carried by the river.

A sub-tropical climate with rainfall in all months and the floodplain of the large Mississippi-Missouri River system allows lush vegetation to grow. The climate also feeds fertile soils that supported sugarcane and cotton plantations in the past, but soybeans and beef cattle are more significant today. Oil is also a major industry for the State.

Louisiana is hot in summer, even overnight, but some relief comes from frequent afternoon thunderstorms. However, it is the humidity that characterises the climate, and only in winter does the state completely escape the moisture, when it experiences cool to comfortable temperatures.

There is a threat of hurricanes striking in the summer months, especially from August to October. Since much of the delta coastline is low lying it is particularly vulnerable to storm surges, as the city of New Orleans discovered in August 2005 during Hurricane Katrina.

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