San Diego weather

Get the latest coronavirus (COVID-19) updates for the USA with current travel advice, statistics and online resources.

Recommended for California

  • Top deals & discounts
  • San Diego climate averages by month
  • More destinations
  • Best time to go to San Diego
  • San Diego 5-day weather forecast
  • San Diego weather today - current conditions (last 24-hours)

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The weather guide for San Diego, California shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

  • Save up to 55% on top attractions in San Diego, USA
  • Try over 35 popular activities & attractions in San Diego
  • Download the Go San Diego card onto your smartphone

Which is the hottest month in San Diego?

The hottest time of year in San Diego is normally August. Expect maximum daytime temperatures to reach 27°C with moderate heat and humidity.

Which month has the most rain in San Diego?

In terms of rainfall, January is usually the wettest month in San Diego with 53mm on average. There are normally 6 days in January with some rain.

When is it sunniest in San Diego?

The sunniest time of year in San Diego is normally January with bright sunshine on average for 76% of daylight hours; that's 8 hours of sunshine per day.

When is the sea warmest in San Diego?

The sea is usually at its warmest in San Diego in August when the water temperature reaches 20°C.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Discover more about California

Compare San Diego weather with the USA

Below the San Diego weather chart shows average maximum daytime temperature for San Diego, California, USA and the USA (Washington).

Maximum daytime temperature (°C)

San Diego, California, USA
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

Compare more San Diego weather >>

  • Book online & save on TUI holidays in 2021/2022
  • Pay £0 deposits with direct debit
  • Plus free child places available

TUITUI deal finder

Back to top

Tropical storm risk: San Diego, California hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
0
<1%
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The San Diego, California tropical storm risk chart above shows the hurricane season. The chart was processed from data supplied by the US Meteorological Agency (NOAA). Find out more about our data sources.

More about tropical storms

  • Book online & save on TUI holidays in 2021/2022
  • Pay £0 deposits with direct debit
  • Plus free child places available

TUITUI deal finder

Back to top

Where's hot in California right now?

Below are the temperatures expected today at popular destinations in California. Select a destination to compare today's forecast with average weather conditions.

More destinations & map >>

Related posts

Popular travel offers

Back to Holiday Weather Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.