Mild
Average highs are around 21°C, so days are mild rather than hot.
April verdict
San Diego, California, United States in April
Weather score57Good
Good for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 9.3h per day, so bright days are a strong part of the month. Rainfall averages 23mm, which is relatively low for holiday planning.
April weather
Monthly averages
Temp
21°C
Rain
23mm
Sun
9.3h
Sea
16°C
Weather score
57
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 23mm, which is relatively low for holiday planning.
Bright
Sunshine averages 9.3h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 16°C, so the water can feel cool.
Map
Weather map
Compare San Diego, California, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
April21°C average high
April is on the cooler side of San Diego's year, useful if you prefer less intense daytime heat.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
April23mm average rain
April sits near San Diego's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsApril to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
April9.3 hours average sun
April is brighter than San Diego's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsApril and July to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
April16°C average sea
April is below San Diego's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 20°C in this stretch, so swimming comfort is at its strongest.
Weather score
April57 weather score
April scores below San Diego's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to September
These months have the strongest weather score in the monthly averages.
Hotels in San Diego, California, United States
Marriott
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The US Grant, a Luxury Collection Hotel, San DiegoSan Diego, California, USA
Marriott Marquis San Diego MarinaSan Diego, California, USA
San Diego Marriott Del MarSan Diego, California, USA
San Diego Marriott Gaslamp QuarterSan Diego, California, USA
San Diego Marriott Mission ValleySan Diego, California, USA
The Westin San Diego BayviewSan Diego, California, USA