Cool
Average highs are around 19°C, so pack for cooler days.
April verdict
Napa, California, United States in April
Weather score47Mixed
Mixed for holiday weather
Average highs are around 19°C, so pack for cooler days. Sunshine averages 10h per day, so bright days are a strong part of the month. Rainfall averages 50mm, which is relatively low for holiday planning.
April weather
Monthly averages
Temp
19°C
Rain
50mm
Sun
10h
Sea
11°C
Weather score
47
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 50mm, which is relatively low for holiday planning.
Bright
Sunshine averages 10h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 11°C, so the water can feel cool.
Map
Weather map
Compare Napa, California, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
April19°C average high
April is close to Napa's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
April50mm average rain
April sits on the drier side of Napa's year, which helps with sightseeing and transfers.
Driest monthsApril to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
April10 hours average sun
April is brighter than Napa's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
April11°C average sea
April is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJanuary and August to December
Sea temperatures are usually near 12°C in this stretch, so swimming comfort is at its strongest.
Weather score
April47 weather score
April sits close to Napa's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsMay to September
These months have the strongest weather score in the monthly averages.
