Humid cities · California
How humid is San Diego in summer?
San Diego right now
65°FBroken cloud
- Today68°F / 63°FClouds
- Tomorrow73°F / 57°FClouds
- Monday68°F / 61°FClouds
Zero drama, zero charm.
Live from OpenWeatherMap. Alerts from the National Weather Service.
Across June, July and August, the dew point in San Diego averages about 60.2°F, which is sticky on the usual dew point scale.
August is the muggiest month, with the dew point averaging about 62.5°F. On NOAA’s hour by hour normals, no hour of the year averages a dew point of 65°F or more, though a muggy spell can still turn up. That makes it the joint 57th driest summer air of the 124 US cities we track.
Last updated
The highest dew point in the forecast for the next 48 hours is about 60°F, which is sticky.
San Diego’s summer dew point averages about 60°F, and August takes it to about 62.5. Even perfect weather sweats a little in August.
Live 48-hour forecast from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Summer humidity at a glance
| Dew point, June to August | 60.2°F |
|---|---|
| Muggiest month | August, 62.5°F |
| Hours a year at a 65°F dew point or more | none |
| How summer feels | sticky |
The dew point is the temperature the air would have to cool to for dew to form, so the higher it is, the more water the air holds. Forecasters usually call under 55°F comfortable, 55 to 65°F sticky and 65°F or more muggy; 70°F or more feels tropical.
Cities with about the same summer air
- Akron, Ohio: about 60.2°F
- Chicago, Illinois: about 60.2°F
- Pittsburgh, Pennsylvania: about 60.3°F
More about the weather here
Source: NOAA U.S. Climate Normals, hourly, 1991 to 2020, station USW00023188. Average dew points, not the stickiest days.