Port Allen (LA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Port Allen.
Climate overview of Port Allen
Port Allen, Louisiana, United States of America, sees big temperature differences between seasons, with August peaking at 33°C (91°F) and January dropping to 16°C (61°F).
With around 1684 mm (66 in) of annual rainfall, Port Allen has a notably wet climate. However, this rainfall is not evenly distributed — the city has very warm summers and mild winters. The wettest month is August. The sunniest month is May, with 9.7 hours of sunshine per day on average.
Port Allen Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Port Allen - and find the best time to visit.
Monthly Temperature in Port Allen
Visitors to Port Allen can expect significant temperature changes throughout the year. Average daytime temperatures reach a very warm 33°C (91°F) in August. In January, the coolest month of the year, temperatures drop to a moderate 16°C (61°F).
At night, temperatures range from around 23°C (73°F) in August to 5°C (41°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Port Allen
Port Allen is known for its substantial rainfall, with annual precipitation reaching 1684 mm (66 in). Port Allen experiences moderate seasonal variation in rainfall, with monthly averages ranging from 212 mm (8.3 in) in August, the wettest month, and 99 mm (3.9 in) in November, the driest month. For more details, please visit our Port Allen 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 Port Allen
Port Allen can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 9.7 hours of sunshine daily. In contrast, the city experiences much darker days in February, with only 5.0 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Port Allen by Month
The relative humidity is high throughout the year in Port Allen.
The city experiences its highest humidity in July, reaching 77%. In February, the humidity drops to its lowest level at 70%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Port Allen
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: November
- Warmest weather: June, July and August
- Most sunshine: May and June
- Fewest rainy days: March, October and November
- Seasonal pattern: Very warm summers and mild winters
Frequently asked questions about the climate in Port Allen
What is the best time to visit Port Allen?
November typically offers the most optimal weather in Port Allen. In contrast, June, July and August tend to have less optimal conditions. Port Allen has very warm summers and mild winters.
What temperatures can I expect in Port Allen?
Daytime highs range from 16°C (61°F) in January to 33°C (91°F) in August. Nighttime lows range from 5°C (41°F) to 23°C (73°F). Temperatures vary considerably through the year.
How much rain does Port Allen get?
Annual rainfall is around 1684 mm (66 in). August is the wettest month with 212 mm (8.3 in), while November is the driest with 99 mm (3.9 in).
How sunny is Port Allen?
Port Allen receives around 2,723 hours of sunshine per year. May is the sunniest month with 290 hours, while February is the cloudiest with just 151 hours. Overall, Port Allen enjoys abundant sunshine.
Port Allen 3-Day Forecast
Port Allen (LA) 3-Day Forecast
Port Allen on the map
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