Napa Weather in April: Temperature, Precipitation, Wind
Napa, United States in April experiences a mild Mediterranean climate characterized by warm days and cool nights. The average temperature hovers around 13.2°C (55.8°F), with daytime highs reaching 20.0°C (68.0°F) and nighttime lows dipping to 7.3°C (45.1°F). Residents and visitors to Napa Valley’s renowned wineries enjoy comfortable conditions throughout the month.
April in Napa brings predominantly clear skies, with an average cloud cover of only 17.2%. The region basks in abundant sunshine, resulting in a high UV index of 9.7. Visitors to popular attractions like the Napa Valley Wine Train or the Oxbow Public Market should take precautions against sun exposure.
Precipitation is minimal during April, with an average of only 0.1 mm of rainfall. Rain occurs on approximately 3 days of the month, with a 10% probability of precipitation. The most common form of precipitation is rain, and severe weather risk remains low at 10%.
Wind patterns in Napa during April are moderate, with average wind speeds of 25.3 km/h (15.7 mph) and gusts reaching 35.8 km/h (22.2 mph). These breezy conditions contribute to the region’s pleasant climate and help maintain the area’s famous vineyards.
Humidity levels in April average 67.4%, creating comfortable conditions for outdoor activities. Visitors exploring the Napa Valley Vine Trail or enjoying tastings at renowned wineries like Robert Mondavi or Beringer experience agreeable weather throughout the month.
Atmospheric pressure remains steady at 1017.1 hPa, contributing to the region’s stable weather patterns. Visibility is excellent, averaging 15.8 km (9.8 miles), allowing for clear views of the surrounding Napa Valley landscape.
Sunrise in Napa during April occurs around 6:33 AM, while sunset takes place at approximately 7:46 PM, providing ample daylight hours for exploring the region’s natural beauty and world-class wineries.
What is the temperature in Napa in April?
Average air temperature in Napa is 13.2°C (55.8°F) in April. The outside temperature in Napa feels like 12.9°C (55.2°F) on a typical April day. The highest average temperature during sunny days is 20°C (68°F) and feels like 20°C (67.9°F). The lowest average temperature after dark is 7.3°C (45.1°F) which feels like 6.3°C (43.3°F).
How hot is Napa in April?
The hot temperature in April in Napa rises to 29.5°C (85.1°F) on sunny days with low cloud coverage and 67.4% humidity. During hottest days of April it feels like 29.2 °C (84.6°F). The average maximum temp in Napa is 20°C (84.6°F) during day time in April.
How cold is Napa in April?
The coldest temp in Napa in April drops to 1.8°C (35.2°F) during the cold nights. With 25.3km/h (15.7mph) winds and 67.4% humidity it feels like 0.2°C (32.4°F) on the coldest nights. The average minimum temperature is 7.3°C (45.1°F) during night time in April.
Does it rain in Napa in April?
Yes, it rains for 3 days in Napa, United States in April averaging 0.1 mm of precipitation. Napa has a 10% chance for rain throughout the entire month of April.
How much does it rain in Napa throughout April?
Napa has 0.1 mm (0 inch) of rain per day on average in April. It rains for an average of 3 days out of the entire month.
Is Napa windy in April?
The average speed of wind in Napa, United States during April is 25.3km/h (15.7mph) and average windgust is 35.8km/h (22.2mph). On some days in April wind can reach up to 38.9km/h (24.2mph).
What is the direction of the wind in Napa in April?
Most days of April the wind is blowing from West-Southwest direction in Napa.
What are the humidity levels in Napa in April?
The average humidity levels in Napa in April are 67.4%. Daily humidity levels in Napa range from 44.7% to 79.3% during April.
How many hours of daylight are in Napa in April?
Napa has 13 hours 12 minutes of daylight in April on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Napa in April is at 6:33:11 and the sunset is at 19:46:01.
What is the cloud coverage in Napa in April?
Clouds cover 17.2% of the sky on average throughout April in Napa. The cloud coverage ranges from 0.2% to 81.3% depending on the day of the month.
What is the UV level in April in Napa?
The average UV index in Napa is 9.7 in April. UV levels change throughout the month and range from 8 to 10.
What is the solar radiation in Napa in April?
The average solar radiation is 301.1 W/m2 (Watts per square meter) in Napa during April. However solar radiation levels change throughout the month and range from 155.9 W/m2 to 336.1 W/m2.
What is the solar energy during April in Napa?
The average solar energy during April in Napa is 26 MJ/m2 (megajoules per square metre). Solar energy ranges from 13.5 MJ/m2, to 29.1 MJ/m2 during April.
Are there severe weather risks in Napa in April?
Yes, there is a 10% risk for severe weather in Napa, United States in April.
What is the air pressure in Napa in April?
On average the air pressure in Napa in April is 1017.1 mb (millibars). Throughout the month the sea level pressure ranges from 1010.8 mb to 1025.5 mb.
What is the visibility in Napa in April?
The average daylight visibility in Napa in April is 15.8 km (9.8 miles). Depending on the precipitation the visibility ranges from 14.9 km (9.3 miles) to 16 km (9.9 miles) throughout April.
What is the dew point in Napa in April?
The average dew point in Napa during April is 6.8°C (44.3°F).
Where is the data for Napa climate in April coming from?
The climate data for Napa, California, United States in April is collected from the following weather stations.
- VACAVILLE NUT TREE AIRPORT, CA US
- NAPA CO AIRPORT, CA US
- PETALUMA MUNICIPAL AIRPORT, CA US
- Oakville CA US CIMIS
- FW1058 American Canyon CA US
- FW7520 Sonoma CA US
- KAPC
- KDVO
- KVCB