Louisiana climate guide

Temperature in Louisiana (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
16°C maximum daytime temperature in January in Louisiana (New Orleans)16
18°C maximum daytime temperature in February in Louisiana (New Orleans)18
22°C maximum daytime temperature in March in Louisiana (New Orleans)22
26°C maximum daytime temperature in April in Louisiana (New Orleans)26
29°C maximum daytime temperature in May in Louisiana (New Orleans)29
32°C maximum daytime temperature in June in Louisiana (New Orleans)32
33°C maximum daytime temperature in July in Louisiana (New Orleans)33
32°C maximum daytime temperature in August in Louisiana (New Orleans)32
30°C maximum daytime temperature in September in Louisiana (New Orleans)30
27°C maximum daytime temperature in October in Louisiana (New Orleans)27
22°C maximum daytime temperature in November in Louisiana (New Orleans)22
18°C maximum daytime temperature in December in Louisiana (New Orleans)18
Min temperature (night-time)
6°C minimum night-time temperature in January in Louisiana (New Orleans)6
8°C minimum night-time temperature in February in Louisiana (New Orleans)8
12°C minimum night-time temperature in March in Louisiana (New Orleans)12
16°C minimum night-time temperature in April in Louisiana (New Orleans)16
19°C minimum night-time temperature in May in Louisiana (New Orleans)19
23°C minimum night-time temperature in June in Louisiana (New Orleans)23
23°C minimum night-time temperature in July in Louisiana (New Orleans)23
23°C minimum night-time temperature in August in Louisiana (New Orleans)23
22°C minimum night-time temperature in September in Louisiana (New Orleans)22
16°C minimum night-time temperature in October in Louisiana (New Orleans)16
12°C minimum night-time temperature in November in Louisiana (New Orleans)12
8°C minimum night-time temperature in December in Louisiana (New Orleans)8

Sunshine & Daylight in Louisiana

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
5 hours of sunshine per day (50% of daylight hours) in January in Louisiana5
6 hours of sunshine per day (54% of daylight hours) in February in Louisiana6
7 hours of sunshine per day (60% of daylight hours) in March in Louisiana7
9 hours of sunshine per day (67% of daylight hours) in April in Louisiana9
9 hours of sunshine per day (67% of daylight hours) in May in Louisiana9
9 hours of sunshine per day (64% of daylight hours) in June in Louisiana9
8 hours of sunshine per day (60% of daylight hours) in July in Louisiana8
8 hours of sunshine per day (61% of daylight hours) in August in Louisiana8
8 hours of sunshine per day (62% of daylight hours) in September in Louisiana8
8 hours of sunshine per day (68% of daylight hours) in October in Louisiana8
6 hours of sunshine per day (55% of daylight hours) in November in Louisiana6
5 hours of sunshine per day (52% of daylight hours) in December in Louisiana5
Daily hours of daylight
10 hours of daylight per day in January in Louisiana (New Orleans)10
11 hours of daylight per day in February in Louisiana (New Orleans)11
12 hours of daylight per day in March in Louisiana (New Orleans)12
13 hours of daylight per day in April in Louisiana (New Orleans)13
14 hours of daylight per day in May in Louisiana (New Orleans)14
14 hours of daylight per day in June in Louisiana (New Orleans)14
14 hours of daylight per day in July in Louisiana (New Orleans)14
13 hours of daylight per day in August in Louisiana (New Orleans)13
12 hours of daylight per day in September in Louisiana (New Orleans)12
11 hours of daylight per day in October in Louisiana (New Orleans)11
11 hours of daylight per day in November in Louisiana (New Orleans)11
10 hours of daylight per day in December in Louisiana (New Orleans)10

Rainfall in Louisiana

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
10 days with some rainfall in January in Louisiana (New Orleans)10
9 days with some rainfall in February in Louisiana (New Orleans)9
9 days with some rainfall in March in Louisiana (New Orleans)9
7 days with some rainfall in April in Louisiana (New Orleans)7
8 days with some rainfall in May in Louisiana (New Orleans)8
11 days with some rainfall in June in Louisiana (New Orleans)11
14 days with some rainfall in July in Louisiana (New Orleans)14
14 days with some rainfall in August in Louisiana (New Orleans)14
10 days with some rainfall in September in Louisiana (New Orleans)10
5 days with some rainfall in October in Louisiana (New Orleans)5
8 days with some rainfall in November in Louisiana (New Orleans)8
10 days with some rainfall in December in Louisiana (New Orleans)10
Average monthly rainfall (mm)
128 mm monthly rainfall in January in Louisiana (New Orleans)128
134 mm monthly rainfall in February in Louisiana (New Orleans)134
125 mm monthly rainfall in March in Louisiana (New Orleans)125
127 mm monthly rainfall in April in Louisiana (New Orleans)127
122 mm monthly rainfall in May in Louisiana (New Orleans)122
142 mm monthly rainfall in June in Louisiana (New Orleans)142
174 mm monthly rainfall in July in Louisiana (New Orleans)174
163 mm monthly rainfall in August in Louisiana (New Orleans)163
147 mm monthly rainfall in September in Louisiana (New Orleans)147
73 mm monthly rainfall in October in Louisiana (New Orleans)73
106 mm monthly rainfall in November in Louisiana (New Orleans)106
128 mm monthly rainfall in December in Louisiana (New Orleans)128

More climate for Louisiana

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 4 (Moderate) in January in Louisiana (New Orleans)4
UV (maximum) index 6 (High) in February in Louisiana (New Orleans)6
UV (maximum) index 8 (Very High) in March in Louisiana (New Orleans)8
UV (maximum) index 10 (Very High) in April in Louisiana (New Orleans)10
UV (maximum) index 10 (Very High) in May in Louisiana (New Orleans)10
UV (maximum) index 11 (Extreme) in June in Louisiana (New Orleans)11
UV (maximum) index 11 (Extreme) in July in Louisiana (New Orleans)11
UV (maximum) index 10 (Very High) in August in Louisiana (New Orleans)10
UV (maximum) index 9 (Very High) in September in Louisiana (New Orleans)9
UV (maximum) index 7 (High) in October in Louisiana (New Orleans)7
UV (maximum) index 5 (Moderate) in November in Louisiana (New Orleans)5
UV (maximum) index 4 (Moderate) in December in Louisiana (New Orleans)4
Heat & Humidity
No heat & humidity in January in Louisiana (New Orleans)0
No heat & humidity in February in Louisiana (New Orleans)0
No heat & humidity in March in Louisiana (New Orleans)0
Low heat & humidity in April in Louisiana (New Orleans)L
Moderate heat & humidity in May in Louisiana (New Orleans)M
Very high heat & humidity in June in Louisiana (New Orleans)VH
Very high heat & humidity in July in Louisiana (New Orleans)VH
Very high heat & humidity in August in Louisiana (New Orleans)VH
High heat & humidity in September in Louisiana (New Orleans)H
Low heat & humidity in October in Louisiana (New Orleans)L
No heat & humidity in November in Louisiana (New Orleans)0
No heat & humidity in December in Louisiana (New Orleans)0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Going to Louisiana? Find the best month to visit Louisiana based on the weather.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Check climate guides for Louisiana showing average temperature, rainfall & sunshine figures for each month of the year. The climate guide shown above is for New Orleans.

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More about Louisiana

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The climate guide for Louisiana, represented by 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.

Metric (°C / mm)  |  Imperial (°F / inches)

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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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