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May Weather in Louisiana, United States

Last updated: June 24, 2025

In Louisiana, United States, the average temperature in May is a pleasant 19°C (66°F). However, be prepared for temperature fluctuations, as the minimum can dip to 3°C (38°F), while the maximum may soar to 34°C (94°F). Expect a fair amount of rain, with 168 mm (6.6 in) of precipitation spread across 16 days. With an average humidity level of 82%, you'll feel that tropical touch in the air!

May Temperature in Louisiana

In May in Louisiana, the average temperature is 19°C (66°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 3°C (38°F). This diverse temperature range makes Louisiana an ideal destination for travelers seeking both warm days and cooler evenings.

May Weather in Louisiana: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Louisiana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Louisiana, May typically has an average temperature of 19°C (66°F), with highs reaching up to 34°C (94°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec303345536675797571574337
Data source: Temperature data for Louisiana generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Louisiana

In Louisiana in May, the precipitation amount is 168 mm (6.6 in) spread over 16 days.

May Precipitation Trends in Louisiana

The chart displays monthly precipitation patterns in Louisiana, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Louisiana, May typically receives around 168 mm (6.6 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec6763133115168115111112761036548
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Louisiana

In Louisiana in May humidity is 82%. With an average temperature of 19°C (66°F), this humidity feels like a warm blanket wrapping around you, making it slightly uncomfortable for traveling as you might find yourself constantly seeking shade or a cool breeze.

May Average Humidity in Louisiana

This chart illustrates the average monthly humidity levels in Louisiana, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Louisiana is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Louisiana

In Louisiana in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Louisiana.

Maximum UV Index Levels in Louisiana for May

The chart shows the monthly maximum UV Index (UVI) for Louisiana in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Louisiana typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: Louisiana May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Louisiana Compares to Other Months

Weather in Louisiana varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Louisiana, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Louisiana, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)67 mm (2.6 inches)82%moderate
February Weather0°C (33°F)63 mm (2.5 inches)80%moderate
March Weather7°C (45°F)133 mm (5.2 inches)80%high
April Weather12°C (54°F)115 mm (4.5 inches)80%very high
May Weather19°C (66°F)168 mm (6.6 inches)82%very high
June Weather24°C (76°F)115 mm (4.5 inches)83%extreme
July Weather26°C (79°F)111 mm (4.4 inches)81%extreme
August Weather24°C (75°F)112 mm (4.4 inches)80%very high
September Weather22°C (71°F)76 mm (3.0 inches)76%very high
October Weather14°C (58°F)103 mm (4.0 inches)76%high
November Weather6°C (43°F)65 mm (2.6 inches)85%moderate
December Weather3°C (37°F)48 mm (1.9 inches)86%moderate

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