Mahwah (NJ) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Mahwah.
Climate overview of Mahwah
Mahwah, New Jersey, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 30°C (86°F) in July, while winters cool to 3°C (37°F) in January.
With around 1306 mm (51 in) of annual rain/snowfall, Mahwah has a notably wet climate. However, this rain/snowfall is not evenly distributed — the city has warm summers and cold winters. The wettest month is August. The sunniest month is July, with 9.0 hours of sunshine per day on average.
Mahwah Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mahwah - and find the best time to visit.
Monthly Temperature in Mahwah
Depending on the time of the year, temperatures range from comfortable to chilly in Mahwah. Average daytime temperatures reach a comfortable 30°C (86°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 3°C (37°F).
At night, temperatures range from around 18°C (64°F) in July to -6°C (21°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Mahwah
Mahwah has a relatively rain/snowy climate with high precipitation levels, averaging 1306 mm (51 in) of rain/snowfall annually. Mahwah experiences moderate seasonal variation in rainfall, with monthly averages ranging from 142 mm (5.6 in) in August, the wettest month, and 80 mm (3.1 in) in November, the driest month. For more details, please visit our Mahwah 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 Mahwah
Mahwah can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.0 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Mahwah by Month
The relative humidity is high throughout the year in Mahwah.
The city experiences its highest humidity in September, reaching 68%. In April, the humidity drops to its lowest level at 55%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Mahwah
Each month is rated for comfortable sightseeing weather — mild temperatures and low rainfall. Tap a month for its full averages; your ideal time may differ for a beach or winter trip (see below).
- Best overall: September
- Warmest weather: July and August
- Most sunshine: May, June, July and August
- Climate seasons: warm summers and cold winters
- Best for winter weather: January, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in Mahwah
What is the best time to visit Mahwah?
September typically offers the most optimal weather in Mahwah. In contrast, January, February, March and December tend to have less optimal conditions. Mahwah has warm summers and cold winters.
What temperatures can I expect in Mahwah?
Daytime highs range from 3°C (37°F) in January to 30°C (86°F) in July. Nighttime lows range from -6°C (21°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Mahwah get?
Annual rainfall is around 1306 mm (51 in). August is the wettest month with 142 mm (5.6 in), while November is the driest with 80 mm (3.1 in).
How sunny is Mahwah?
Mahwah receives around 2,544 hours of sunshine per year. July is the sunniest month with 271 hours, while December is the cloudiest with just 141 hours. Overall, Mahwah enjoys abundant sunshine.
Mahwah 3-Day Forecast
Mahwah (NJ) 3-Day Forecast
Mahwah on the map
Mahwah is highlighted - select any city to see its climate.
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