Warm
Average highs sit around 26°C, giving warm days by monthly-average standards.
Weather Guide
San Diego, California, United States Average Monthly Weather
Weather score61Good annual avg
Best months: August, July, September
Across the year, average daytime temperatures are around 22°C, sunshine averages 8.4h per day, and rainfall totals about 262mm. Sea temperatures average 18°C across the year.
Annual weather
Annual averages
Temp
22°C
Rain
262mm
Annual total
Sun
8.4h
Sea
18°C
Weather score
61
Good avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 1mm, 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 20°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
July26°C average high
July is one of San Diego's warmest months, with daytime heat above the yearly average.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
July1mm average rain
July is one of San Diego's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsApril to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July10 hours average sun
July is one of San Diego's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsApril and July to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
July20°C average sea
July sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to September
Sea temperatures are usually near 20°C in this stretch, so swimming comfort is at its strongest.
Weather score
July82 weather score
July is one of San Diego's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJuly to September
These months have the strongest weather score in the monthly averages.
Hotels in San Diego, California, United States
Marriott
View all
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