Harvey (LA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Harvey.
Climate overview of Harvey
Temperatures in Harvey, Louisiana, United States of America, vary greatly throughout the year. July is the hottest month at 33°C (91°F), while January is the coldest at 17°C (63°F).
The city has a wet climate, receiving around 1740 mm (69 in) of rainfall per year. July is the wettest month. Sunshine peaks in May, when the city sees around 9.3 hours of sunshine per day.
Harvey Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Harvey — and find the best time to visit.
Monthly Temperature in Harvey
The climate in Harvey is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 33°C (91°F) in July to a moderate 17°C (63°F) in January.
Nighttime temperatures range from 25°C (77°F) in July to 7°C (45°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Harvey
Harvey has a notably wet climate with abundant precipitation, recording 1740 mm (69 in) of rainfall per year. The seasons in Harvey bring significant changes in precipitation. The wettest month, July, receives heavy rainfall, with an average of 223 mm (8.8 in) of precipitation. This rainfall is distributed across 22 rainy days.
In contrast, the driest month, November, experiences much less rainfall, totaling 74 mm (2.9 in) over 7 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Harvey Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Harvey
In Harvey, summer days are longer and more sunny, with daily sunshine hours peaking at 9.3 hours in May. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 5.1 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Harvey
The mean water temperature over the year ranges from 20°C (68°F) in January to 28°C (82°F) in June.
Water temperature over the year
Humidity in Harvey by Month
The relative humidity is high throughout the year in Harvey.
The city experiences its highest humidity in July, reaching 79%. In February, the humidity drops to its lowest level at 73%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Harvey
The mean wind speed over the year ranges from 3 m/s (6 knots) in June, July, August, September and October to 5 m/s (10 knots) in February and March. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Harvey
The wettest months are July, August, September and December, when precipitation is at its highest. Looking for inspiration on where to travel this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
Frequently asked questions about the climate in Harvey
What is the best time to visit Harvey?
November typically offers the most optimal weather in Harvey. In contrast, June, July and August tend to have less optimal conditions.
What temperatures can I expect in Harvey?
Daytime highs range from 17°C (63°F) in January to 33°C (91°F) in July. Nighttime lows range from 7°C (45°F) to 25°C (77°F). Temperatures vary considerably through the year.
How much rain does Harvey get?
Annual rainfall is around 1740 mm (69 in). July is the wettest month with 223 mm (8.8 in), while November is the driest with 74 mm (2.9 in).
How sunny is Harvey?
Harvey receives around 2,640 hours of sunshine per year. May is the sunniest month with 279 hours, while January is the cloudiest with just 152 hours. Overall, Harvey enjoys abundant sunshine.
Harvey 3-Day Forecast
Harvey (LA) 3-Day Forecast
Harvey on the map
Harvey is highlighted — select any city to see its climate.
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