Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
April's arrival signals an increase in average high-temperatures, moving from March's icy 40.6°F (4.8°C) to a fresh 54.3°F (12.4°C). During April, Rotterdam witnesses a consistent average low-temperature of 36.1°F (2.3°C).Humidity
April is the least humid month, with an average relative humidity of 74%.Rainfall
In April, the rain falls for 14.6 days. Throughout April, 2.32" (59mm) of precipitation is accumulated. Throughout the year, there are 137.4 rainfall days, and 25.75" (654mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In April, it is snowing for 2 days. Throughout April, 0.79" (20mm) of snow is accumulated. In Rotterdam, during the entire year, snow falls for 36.5 days and aggregates up to 22.56" (573mm) of snow.Daylight
The average length of the day in April is 13h and 25min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:22 pm. On the last day of April, sunrise is at 5:50 am and sunset at 7:55 pm EDT.
Sunshine
In April, the average sunshine in Rotterdam is 7.9h.UV index
In Rotterdam, the average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In April, a daily maximum UV index of 3 leads to the following instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are April temperatures in Rotterdam?
What is the least humid month?
What is the average humidity in April in Rotterdam?
How much does it rain in April?
How many days does it snow in April?
What is the average length of the day in April in Rotterdam?
When is the sunrise / sunset in April?
How many hours of sunshine does Rotterdam have in April?
How high is the UV index in April?
Average temperature in April
Rotterdam, NY
- Average high temperature in April: 54.3°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in April: 36.1°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in April
Rotterdam, NY
- Average pressure in April: 29.97"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Rotterdam, NY
- Average wind speed in April: 7.9mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in April
Rotterdam, NY
- Average humidity in April: 74%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (74%).
Average rainfall in April
Rotterdam, NY
- Average rainfall in April: 2.32"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (1.57").
Average rainfall days in April
Rotterdam, NY
- Average rainfall days in April: 14.6 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in April
Rotterdam, NY
- Average snowfall in April: 0.79"
The month with the highest snowfall is February (6.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Rotterdam, NY
- Average snowfall days in April: 2 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Rotterdam, NY
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 7h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in April
Rotterdam, NY
- Average sunshine days in April: 12.6 days
The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is April (12.6 days).
Average UV index in April
Rotterdam, NY
- Average UV index in April: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Rotterdam, NY
- Average cloud cover in April: 49
The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in April
Rotterdam, NY
- Average visibility in April: 6mi
The months with the highest visibility are April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are January, February, March, May and September (5mi).
Rotterdam, New York, USA
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